fix(logging): update response aggregation logic to include all attempts

Move thinking budget normalization from translators to executor

cmd/server/main.go

@@ -139,7 +139,8 @@ func main() {
 
 	wd, err := os.Getwd()
 	if err != nil {
-		log.Fatalf("failed to get working directory: %v", err)
+		log.Errorf("failed to get working directory: %v", err)
+		return
 	}
 
 	// Load environment variables from .env if present.
@@ -233,13 +234,15 @@ func main() {
 		})
 		cancel()
 		if err != nil {
-			log.Fatalf("failed to initialize postgres token store: %v", err)
+			log.Errorf("failed to initialize postgres token store: %v", err)
+			return
 		}
 		examplePath := filepath.Join(wd, "config.example.yaml")
 		ctx, cancel = context.WithTimeout(context.Background(), 30*time.Second)
 		if errBootstrap := pgStoreInst.Bootstrap(ctx, examplePath); errBootstrap != nil {
 			cancel()
-			log.Fatalf("failed to bootstrap postgres-backed config: %v", errBootstrap)
+			log.Errorf("failed to bootstrap postgres-backed config: %v", errBootstrap)
+			return
 		}
 		cancel()
 		configFilePath = pgStoreInst.ConfigPath()
@@ -262,7 +265,8 @@ func main() {
 		if strings.Contains(resolvedEndpoint, "://") {
 			parsed, errParse := url.Parse(resolvedEndpoint)
 			if errParse != nil {
-				log.Fatalf("failed to parse object store endpoint %q: %v", objectStoreEndpoint, errParse)
+				log.Errorf("failed to parse object store endpoint %q: %v", objectStoreEndpoint, errParse)
+				return
 			}
 			switch strings.ToLower(parsed.Scheme) {
 			case "http":
@@ -270,10 +274,12 @@ func main() {
 			case "https":
 				useSSL = true
 			default:
-				log.Fatalf("unsupported object store scheme %q (only http and https are allowed)", parsed.Scheme)
+				log.Errorf("unsupported object store scheme %q (only http and https are allowed)", parsed.Scheme)
+				return
 			}
 			if parsed.Host == "" {
-				log.Fatalf("object store endpoint %q is missing host information", objectStoreEndpoint)
+				log.Errorf("object store endpoint %q is missing host information", objectStoreEndpoint)
+				return
 			}
 			resolvedEndpoint = parsed.Host
 			if parsed.Path != "" && parsed.Path != "/" {
@@ -292,13 +298,15 @@ func main() {
 		}
 		objectStoreInst, err = store.NewObjectTokenStore(objCfg)
 		if err != nil {
-			log.Fatalf("failed to initialize object token store: %v", err)
+			log.Errorf("failed to initialize object token store: %v", err)
+			return
 		}
 		examplePath := filepath.Join(wd, "config.example.yaml")
 		ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
 		if errBootstrap := objectStoreInst.Bootstrap(ctx, examplePath); errBootstrap != nil {
 			cancel()
-			log.Fatalf("failed to bootstrap object-backed config: %v", errBootstrap)
+			log.Errorf("failed to bootstrap object-backed config: %v", errBootstrap)
+			return
 		}
 		cancel()
 		configFilePath = objectStoreInst.ConfigPath()
@@ -323,7 +331,8 @@ func main() {
 		gitStoreInst = store.NewGitTokenStore(gitStoreRemoteURL, gitStoreUser, gitStorePassword)
 		gitStoreInst.SetBaseDir(authDir)
 		if errRepo := gitStoreInst.EnsureRepository(); errRepo != nil {
-			log.Fatalf("failed to prepare git token store: %v", errRepo)
+			log.Errorf("failed to prepare git token store: %v", errRepo)
+			return
 		}
 		configFilePath = gitStoreInst.ConfigPath()
 		if configFilePath == "" {
@@ -332,17 +341,21 @@ func main() {
 		if _, statErr := os.Stat(configFilePath); errors.Is(statErr, fs.ErrNotExist) {
 			examplePath := filepath.Join(wd, "config.example.yaml")
 			if _, errExample := os.Stat(examplePath); errExample != nil {
-				log.Fatalf("failed to find template config file: %v", errExample)
+				log.Errorf("failed to find template config file: %v", errExample)
+				return
 			}
 			if errCopy := misc.CopyConfigTemplate(examplePath, configFilePath); errCopy != nil {
-				log.Fatalf("failed to bootstrap git-backed config: %v", errCopy)
+				log.Errorf("failed to bootstrap git-backed config: %v", errCopy)
+				return
 			}
 			if errCommit := gitStoreInst.PersistConfig(context.Background()); errCommit != nil {
-				log.Fatalf("failed to commit initial git-backed config: %v", errCommit)
+				log.Errorf("failed to commit initial git-backed config: %v", errCommit)
+				return
 			}
 			log.Infof("git-backed config initialized from template: %s", configFilePath)
 		} else if statErr != nil {
-			log.Fatalf("failed to inspect git-backed config: %v", statErr)
+			log.Errorf("failed to inspect git-backed config: %v", statErr)
+			return
 		}
 		cfg, err = config.LoadConfigOptional(configFilePath, isCloudDeploy)
 		if err == nil {
@@ -355,13 +368,15 @@ func main() {
 	} else {
 		wd, err = os.Getwd()
 		if err != nil {
-			log.Fatalf("failed to get working directory: %v", err)
+			log.Errorf("failed to get working directory: %v", err)
+			return
 		}
 		configFilePath = filepath.Join(wd, "config.yaml")
 		cfg, err = config.LoadConfigOptional(configFilePath, isCloudDeploy)
 	}
 	if err != nil {
-		log.Fatalf("failed to load config: %v", err)
+		log.Errorf("failed to load config: %v", err)
+		return
 	}
 	if cfg == nil {
 		cfg = &config.Config{}
@@ -391,7 +406,8 @@ func main() {
 	coreauth.SetQuotaCooldownDisabled(cfg.DisableCooling)
 
 	if err = logging.ConfigureLogOutput(cfg.LoggingToFile); err != nil {
-		log.Fatalf("failed to configure log output: %v", err)
+		log.Errorf("failed to configure log output: %v", err)
+		return
 	}
 
 	log.Infof("CLIProxyAPI Version: %s, Commit: %s, BuiltAt: %s", buildinfo.Version, buildinfo.Commit, buildinfo.BuildDate)
@@ -400,7 +416,8 @@ func main() {
 	util.SetLogLevel(cfg)
 
 	if resolvedAuthDir, errResolveAuthDir := util.ResolveAuthDir(cfg.AuthDir); errResolveAuthDir != nil {
-		log.Fatalf("failed to resolve auth directory: %v", errResolveAuthDir)
+		log.Errorf("failed to resolve auth directory: %v", errResolveAuthDir)
+		return
 	} else {
 		cfg.AuthDir = resolvedAuthDir
 	}

config.example.yaml

@@ -1,3 +1,7 @@
+# Server host/interface to bind to. Default is empty ("") to bind all interfaces (IPv4 + IPv6).
+# Use "127.0.0.1" or "localhost" to restrict access to local machine only.
+host: ""
+
 # Server port
 port: 8317
 
@@ -134,6 +138,8 @@ ws-auth: false
 #   upstream-api-key: ""
 #   # Restrict Amp management routes (/api/auth, /api/user, etc.) to localhost only (recommended)
 #   restrict-management-to-localhost: true
+#   # Force model mappings to run before checking local API keys (default: false)
+#   force-model-mappings: false
 #   # Amp Model Mappings
 #   # Route unavailable Amp models to alternative models available in your local proxy.
 #   # Useful when Amp CLI requests models you don't have access to (e.g., Claude Opus 4.5)

internal/api/handlers/management/auth_files.go

@@ -713,14 +713,16 @@ func (h *Handler) RequestAnthropicToken(c *gin.Context) {
 	// Generate PKCE codes
 	pkceCodes, err := claude.GeneratePKCECodes()
 	if err != nil {
-		log.Fatalf("Failed to generate PKCE codes: %v", err)
+		log.Errorf("Failed to generate PKCE codes: %v", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to generate PKCE codes"})
 		return
 	}
 
 	// Generate random state parameter
 	state, err := misc.GenerateRandomState()
 	if err != nil {
-		log.Fatalf("Failed to generate state parameter: %v", err)
+		log.Errorf("Failed to generate state parameter: %v", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to generate state parameter"})
 		return
 	}
 
@@ -730,7 +732,8 @@ func (h *Handler) RequestAnthropicToken(c *gin.Context) {
 	// Generate authorization URL (then override redirect_uri to reuse server port)
 	authURL, state, err := anthropicAuth.GenerateAuthURL(state, pkceCodes)
 	if err != nil {
-		log.Fatalf("Failed to generate authorization URL: %v", err)
+		log.Errorf("Failed to generate authorization URL: %v", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to generate authorization url"})
 		return
 	}
 
@@ -872,7 +875,7 @@ func (h *Handler) RequestAnthropicToken(c *gin.Context) {
 		}
 		savedPath, errSave := h.saveTokenRecord(ctx, record)
 		if errSave != nil {
-			log.Fatalf("Failed to save authentication tokens: %v", errSave)
+			log.Errorf("Failed to save authentication tokens: %v", errSave)
 			oauthStatus[state] = "Failed to save authentication tokens"
 			return
 		}
@@ -1045,7 +1048,7 @@ func (h *Handler) RequestGeminiCLIToken(c *gin.Context) {
 		gemAuth := geminiAuth.NewGeminiAuth()
 		gemClient, errGetClient := gemAuth.GetAuthenticatedClient(ctx, &ts, h.cfg, true)
 		if errGetClient != nil {
-			log.Fatalf("failed to get authenticated client: %v", errGetClient)
+			log.Errorf("failed to get authenticated client: %v", errGetClient)
 			oauthStatus[state] = "Failed to get authenticated client"
 			return
 		}
@@ -1110,7 +1113,7 @@ func (h *Handler) RequestGeminiCLIToken(c *gin.Context) {
 		}
 		savedPath, errSave := h.saveTokenRecord(ctx, record)
 		if errSave != nil {
-			log.Fatalf("Failed to save token to file: %v", errSave)
+			log.Errorf("Failed to save token to file: %v", errSave)
 			oauthStatus[state] = "Failed to save token to file"
 			return
 		}
@@ -1131,14 +1134,16 @@ func (h *Handler) RequestCodexToken(c *gin.Context) {
 	// Generate PKCE codes
 	pkceCodes, err := codex.GeneratePKCECodes()
 	if err != nil {
-		log.Fatalf("Failed to generate PKCE codes: %v", err)
+		log.Errorf("Failed to generate PKCE codes: %v", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to generate PKCE codes"})
 		return
 	}
 
 	// Generate random state parameter
 	state, err := misc.GenerateRandomState()
 	if err != nil {
-		log.Fatalf("Failed to generate state parameter: %v", err)
+		log.Errorf("Failed to generate state parameter: %v", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to generate state parameter"})
 		return
 	}
 
@@ -1148,7 +1153,8 @@ func (h *Handler) RequestCodexToken(c *gin.Context) {
 	// Generate authorization URL
 	authURL, err := openaiAuth.GenerateAuthURL(state, pkceCodes)
 	if err != nil {
-		log.Fatalf("Failed to generate authorization URL: %v", err)
+		log.Errorf("Failed to generate authorization URL: %v", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to generate authorization url"})
 		return
 	}
 
@@ -1283,7 +1289,7 @@ func (h *Handler) RequestCodexToken(c *gin.Context) {
 		savedPath, errSave := h.saveTokenRecord(ctx, record)
 		if errSave != nil {
 			oauthStatus[state] = "Failed to save authentication tokens"
-			log.Fatalf("Failed to save authentication tokens: %v", errSave)
+			log.Errorf("Failed to save authentication tokens: %v", errSave)
 			return
 		}
 		fmt.Printf("Authentication successful! Token saved to %s\n", savedPath)
@@ -1318,7 +1324,8 @@ func (h *Handler) RequestAntigravityToken(c *gin.Context) {
 
 	state, errState := misc.GenerateRandomState()
 	if errState != nil {
-		log.Fatalf("Failed to generate state parameter: %v", errState)
+		log.Errorf("Failed to generate state parameter: %v", errState)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to generate state parameter"})
 		return
 	}
 
@@ -1514,7 +1521,7 @@ func (h *Handler) RequestAntigravityToken(c *gin.Context) {
 		}
 		savedPath, errSave := h.saveTokenRecord(ctx, record)
 		if errSave != nil {
-			log.Fatalf("Failed to save token to file: %v", errSave)
+			log.Errorf("Failed to save token to file: %v", errSave)
 			oauthStatus[state] = "Failed to save token to file"
 			return
 		}
@@ -1543,7 +1550,8 @@ func (h *Handler) RequestQwenToken(c *gin.Context) {
 	// Generate authorization URL
 	deviceFlow, err := qwenAuth.InitiateDeviceFlow(ctx)
 	if err != nil {
-		log.Fatalf("Failed to generate authorization URL: %v", err)
+		log.Errorf("Failed to generate authorization URL: %v", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to generate authorization url"})
 		return
 	}
 	authURL := deviceFlow.VerificationURIComplete
@@ -1570,7 +1578,7 @@ func (h *Handler) RequestQwenToken(c *gin.Context) {
 		}
 		savedPath, errSave := h.saveTokenRecord(ctx, record)
 		if errSave != nil {
-			log.Fatalf("Failed to save authentication tokens: %v", errSave)
+			log.Errorf("Failed to save authentication tokens: %v", errSave)
 			oauthStatus[state] = "Failed to save authentication tokens"
 			return
 		}
@@ -1674,7 +1682,7 @@ func (h *Handler) RequestIFlowToken(c *gin.Context) {
 		savedPath, errSave := h.saveTokenRecord(ctx, record)
 		if errSave != nil {
 			oauthStatus[state] = "Failed to save authentication tokens"
-			log.Fatalf("Failed to save authentication tokens: %v", errSave)
+			log.Errorf("Failed to save authentication tokens: %v", errSave)
 			return
 		}
 
@@ -2103,6 +2111,7 @@ func checkCloudAPIIsEnabled(ctx context.Context, httpClient *http.Client, projec
 				continue
 			}
 		}
+		_ = resp.Body.Close()
 		return false, fmt.Errorf("project activation required: %s", errMessage)
 	}
 	return true, nil

internal/api/handlers/management/config_lists.go

@@ -706,3 +706,155 @@ func normalizeClaudeKey(entry *config.ClaudeKey) {
 	}
 	entry.Models = normalized
 }
+
+// GetAmpCode returns the complete ampcode configuration.
+func (h *Handler) GetAmpCode(c *gin.Context) {
+	if h == nil || h.cfg == nil {
+		c.JSON(200, gin.H{"ampcode": config.AmpCode{}})
+		return
+	}
+	c.JSON(200, gin.H{"ampcode": h.cfg.AmpCode})
+}
+
+// GetAmpUpstreamURL returns the ampcode upstream URL.
+func (h *Handler) GetAmpUpstreamURL(c *gin.Context) {
+	if h == nil || h.cfg == nil {
+		c.JSON(200, gin.H{"upstream-url": ""})
+		return
+	}
+	c.JSON(200, gin.H{"upstream-url": h.cfg.AmpCode.UpstreamURL})
+}
+
+// PutAmpUpstreamURL updates the ampcode upstream URL.
+func (h *Handler) PutAmpUpstreamURL(c *gin.Context) {
+	h.updateStringField(c, func(v string) { h.cfg.AmpCode.UpstreamURL = strings.TrimSpace(v) })
+}
+
+// DeleteAmpUpstreamURL clears the ampcode upstream URL.
+func (h *Handler) DeleteAmpUpstreamURL(c *gin.Context) {
+	h.cfg.AmpCode.UpstreamURL = ""
+	h.persist(c)
+}
+
+// GetAmpUpstreamAPIKey returns the ampcode upstream API key.
+func (h *Handler) GetAmpUpstreamAPIKey(c *gin.Context) {
+	if h == nil || h.cfg == nil {
+		c.JSON(200, gin.H{"upstream-api-key": ""})
+		return
+	}
+	c.JSON(200, gin.H{"upstream-api-key": h.cfg.AmpCode.UpstreamAPIKey})
+}
+
+// PutAmpUpstreamAPIKey updates the ampcode upstream API key.
+func (h *Handler) PutAmpUpstreamAPIKey(c *gin.Context) {
+	h.updateStringField(c, func(v string) { h.cfg.AmpCode.UpstreamAPIKey = strings.TrimSpace(v) })
+}
+
+// DeleteAmpUpstreamAPIKey clears the ampcode upstream API key.
+func (h *Handler) DeleteAmpUpstreamAPIKey(c *gin.Context) {
+	h.cfg.AmpCode.UpstreamAPIKey = ""
+	h.persist(c)
+}
+
+// GetAmpRestrictManagementToLocalhost returns the localhost restriction setting.
+func (h *Handler) GetAmpRestrictManagementToLocalhost(c *gin.Context) {
+	if h == nil || h.cfg == nil {
+		c.JSON(200, gin.H{"restrict-management-to-localhost": true})
+		return
+	}
+	c.JSON(200, gin.H{"restrict-management-to-localhost": h.cfg.AmpCode.RestrictManagementToLocalhost})
+}
+
+// PutAmpRestrictManagementToLocalhost updates the localhost restriction setting.
+func (h *Handler) PutAmpRestrictManagementToLocalhost(c *gin.Context) {
+	h.updateBoolField(c, func(v bool) { h.cfg.AmpCode.RestrictManagementToLocalhost = v })
+}
+
+// GetAmpModelMappings returns the ampcode model mappings.
+func (h *Handler) GetAmpModelMappings(c *gin.Context) {
+	if h == nil || h.cfg == nil {
+		c.JSON(200, gin.H{"model-mappings": []config.AmpModelMapping{}})
+		return
+	}
+	c.JSON(200, gin.H{"model-mappings": h.cfg.AmpCode.ModelMappings})
+}
+
+// PutAmpModelMappings replaces all ampcode model mappings.
+func (h *Handler) PutAmpModelMappings(c *gin.Context) {
+	var body struct {
+		Value []config.AmpModelMapping `json:"value"`
+	}
+	if err := c.ShouldBindJSON(&body); err != nil {
+		c.JSON(400, gin.H{"error": "invalid body"})
+		return
+	}
+	h.cfg.AmpCode.ModelMappings = body.Value
+	h.persist(c)
+}
+
+// PatchAmpModelMappings adds or updates model mappings.
+func (h *Handler) PatchAmpModelMappings(c *gin.Context) {
+	var body struct {
+		Value []config.AmpModelMapping `json:"value"`
+	}
+	if err := c.ShouldBindJSON(&body); err != nil {
+		c.JSON(400, gin.H{"error": "invalid body"})
+		return
+	}
+
+	existing := make(map[string]int)
+	for i, m := range h.cfg.AmpCode.ModelMappings {
+		existing[strings.TrimSpace(m.From)] = i
+	}
+
+	for _, newMapping := range body.Value {
+		from := strings.TrimSpace(newMapping.From)
+		if idx, ok := existing[from]; ok {
+			h.cfg.AmpCode.ModelMappings[idx] = newMapping
+		} else {
+			h.cfg.AmpCode.ModelMappings = append(h.cfg.AmpCode.ModelMappings, newMapping)
+			existing[from] = len(h.cfg.AmpCode.ModelMappings) - 1
+		}
+	}
+	h.persist(c)
+}
+
+// DeleteAmpModelMappings removes specified model mappings by "from" field.
+func (h *Handler) DeleteAmpModelMappings(c *gin.Context) {
+	var body struct {
+		Value []string `json:"value"`
+	}
+	if err := c.ShouldBindJSON(&body); err != nil || len(body.Value) == 0 {
+		h.cfg.AmpCode.ModelMappings = nil
+		h.persist(c)
+		return
+	}
+
+	toRemove := make(map[string]bool)
+	for _, from := range body.Value {
+		toRemove[strings.TrimSpace(from)] = true
+	}
+
+	newMappings := make([]config.AmpModelMapping, 0, len(h.cfg.AmpCode.ModelMappings))
+	for _, m := range h.cfg.AmpCode.ModelMappings {
+		if !toRemove[strings.TrimSpace(m.From)] {
+			newMappings = append(newMappings, m)
+		}
+	}
+	h.cfg.AmpCode.ModelMappings = newMappings
+	h.persist(c)
+}
+
+// GetAmpForceModelMappings returns whether model mappings are forced.
+func (h *Handler) GetAmpForceModelMappings(c *gin.Context) {
+	if h == nil || h.cfg == nil {
+		c.JSON(200, gin.H{"force-model-mappings": false})
+		return
+	}
+	c.JSON(200, gin.H{"force-model-mappings": h.cfg.AmpCode.ForceModelMappings})
+}
+
+// PutAmpForceModelMappings updates the force model mappings setting.
+func (h *Handler) PutAmpForceModelMappings(c *gin.Context) {
+	h.updateBoolField(c, func(v bool) { h.cfg.AmpCode.ForceModelMappings = v })
+}

internal/api/handlers/management/handler.go

@@ -240,16 +240,6 @@ func (h *Handler) updateBoolField(c *gin.Context, set func(bool)) {
 		Value *bool `json:"value"`
 	}
 	if err := c.ShouldBindJSON(&body); err != nil || body.Value == nil {
-		var m map[string]any
-		if err2 := c.ShouldBindJSON(&m); err2 == nil {
-			for _, v := range m {
-				if b, ok := v.(bool); ok {
-					set(b)
-					h.persist(c)
-					return
-				}
-			}
-		}
 		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid body"})
 		return
 	}

internal/api/middleware/response_writer.go

@@ -232,7 +232,16 @@ func (w *ResponseWriterWrapper) Finalize(c *gin.Context) error {
 			w.streamDone = nil
 		}
 
+		// Write API Request and Response to the streaming log before closing
 		if w.streamWriter != nil {
+			apiRequest := w.extractAPIRequest(c)
+			if len(apiRequest) > 0 {
+				_ = w.streamWriter.WriteAPIRequest(apiRequest)
+			}
+			apiResponse := w.extractAPIResponse(c)
+			if len(apiResponse) > 0 {
+				_ = w.streamWriter.WriteAPIResponse(apiResponse)
+			}
 			if err := w.streamWriter.Close(); err != nil {
 				w.streamWriter = nil
 				return err

internal/api/modules/amp/amp.go

@@ -100,6 +100,16 @@ func (m *AmpModule) Name() string {
 	return "amp-routing"
 }
 
+// forceModelMappings returns whether model mappings should take precedence over local API keys
+func (m *AmpModule) forceModelMappings() bool {
+	m.configMu.RLock()
+	defer m.configMu.RUnlock()
+	if m.lastConfig == nil {
+		return false
+	}
+	return m.lastConfig.ForceModelMappings
+}
+
 // Register sets up Amp routes if configured.
 // This implements the RouteModuleV2 interface with Context.
 // Routes are registered only once via sync.Once for idempotent behavior.

internal/api/modules/amp/fallback_handlers.go

@@ -77,23 +77,29 @@ func logAmpRouting(routeType AmpRouteType, requestedModel, resolvedModel, provid
 // FallbackHandler wraps a standard handler with fallback logic to ampcode.com
 // when the model's provider is not available in CLIProxyAPI
 type FallbackHandler struct {
-	getProxy    func() *httputil.ReverseProxy
-	modelMapper ModelMapper
+	getProxy           func() *httputil.ReverseProxy
+	modelMapper        ModelMapper
+	forceModelMappings func() bool
 }
 
 // NewFallbackHandler creates a new fallback handler wrapper
 // The getProxy function allows lazy evaluation of the proxy (useful when proxy is created after routes)
 func NewFallbackHandler(getProxy func() *httputil.ReverseProxy) *FallbackHandler {
 	return &FallbackHandler{
-		getProxy: getProxy,
+		getProxy:           getProxy,
+		forceModelMappings: func() bool { return false },
 	}
 }
 
 // NewFallbackHandlerWithMapper creates a new fallback handler with model mapping support
-func NewFallbackHandlerWithMapper(getProxy func() *httputil.ReverseProxy, mapper ModelMapper) *FallbackHandler {
+func NewFallbackHandlerWithMapper(getProxy func() *httputil.ReverseProxy, mapper ModelMapper, forceModelMappings func() bool) *FallbackHandler {
+	if forceModelMappings == nil {
+		forceModelMappings = func() bool { return false }
+	}
 	return &FallbackHandler{
-		getProxy:    getProxy,
-		modelMapper: mapper,
+		getProxy:           getProxy,
+		modelMapper:        mapper,
+		forceModelMappings: forceModelMappings,
 	}
 }
 
@@ -130,34 +136,65 @@ func (fh *FallbackHandler) WrapHandler(handler gin.HandlerFunc) gin.HandlerFunc
 		// Normalize model (handles Gemini thinking suffixes)
 		normalizedModel, _ := util.NormalizeGeminiThinkingModel(modelName)
 
-		// Check if we have providers for this model
-		providers := util.GetProviderName(normalizedModel)
-
 		// Track resolved model for logging (may change if mapping is applied)
 		resolvedModel := normalizedModel
 		usedMapping := false
+		var providers []string
 
-		if len(providers) == 0 {
-			// No providers configured - check if we have a model mapping
+		// Check if model mappings should be forced ahead of local API keys
+		forceMappings := fh.forceModelMappings != nil && fh.forceModelMappings()
+
+		if forceMappings {
+			// FORCE MODE: Check model mappings FIRST (takes precedence over local API keys)
+			// This allows users to route Amp requests to their preferred OAuth providers
 			if fh.modelMapper != nil {
 				if mappedModel := fh.modelMapper.MapModel(normalizedModel); mappedModel != "" {
-					// Mapping found - rewrite the model in request body
-					bodyBytes = rewriteModelInRequest(bodyBytes, mappedModel)
-					c.Request.Body = io.NopCloser(bytes.NewReader(bodyBytes))
-					// Store mapped model in context for handlers that check it (like gemini bridge)
-					c.Set(MappedModelContextKey, mappedModel)
-					resolvedModel = mappedModel
-					usedMapping = true
-
-					// Get providers for the mapped model
-					providers = util.GetProviderName(mappedModel)
-
-					// Continue to handler with remapped model
-					goto handleRequest
+					// Mapping found - check if we have a provider for the mapped model
+					mappedProviders := util.GetProviderName(mappedModel)
+					if len(mappedProviders) > 0 {
+						// Mapping found and provider available - rewrite the model in request body
+						bodyBytes = rewriteModelInRequest(bodyBytes, mappedModel)
+						c.Request.Body = io.NopCloser(bytes.NewReader(bodyBytes))
+						// Store mapped model in context for handlers that check it (like gemini bridge)
+						c.Set(MappedModelContextKey, mappedModel)
+						resolvedModel = mappedModel
+						usedMapping = true
+						providers = mappedProviders
+					}
 				}
 			}
 
-			// No mapping found - check if we have a proxy for fallback
+			// If no mapping applied, check for local providers
+			if !usedMapping {
+				providers = util.GetProviderName(normalizedModel)
+			}
+		} else {
+			// DEFAULT MODE: Check local providers first, then mappings as fallback
+			providers = util.GetProviderName(normalizedModel)
+
+			if len(providers) == 0 {
+				// No providers configured - check if we have a model mapping
+				if fh.modelMapper != nil {
+					if mappedModel := fh.modelMapper.MapModel(normalizedModel); mappedModel != "" {
+						// Mapping found - check if we have a provider for the mapped model
+						mappedProviders := util.GetProviderName(mappedModel)
+						if len(mappedProviders) > 0 {
+							// Mapping found and provider available - rewrite the model in request body
+							bodyBytes = rewriteModelInRequest(bodyBytes, mappedModel)
+							c.Request.Body = io.NopCloser(bytes.NewReader(bodyBytes))
+							// Store mapped model in context for handlers that check it (like gemini bridge)
+							c.Set(MappedModelContextKey, mappedModel)
+							resolvedModel = mappedModel
+							usedMapping = true
+							providers = mappedProviders
+						}
+					}
+				}
+			}
+		}
+
+		// If no providers available, fallback to ampcode.com
+		if len(providers) == 0 {
 			proxy := fh.getProxy()
 			if proxy != nil {
 				// Log: Forwarding to ampcode.com (uses Amp credits)
@@ -175,8 +212,6 @@ func (fh *FallbackHandler) WrapHandler(handler gin.HandlerFunc) gin.HandlerFunc
 			logAmpRouting(RouteTypeNoProvider, modelName, "", "", requestPath)
 		}
 
-	handleRequest:
-
 		// Log the routing decision
 		providerName := ""
 		if len(providers) > 0 {

internal/api/modules/amp/routes.go

@@ -156,6 +156,7 @@ func (m *AmpModule) registerManagementRoutes(engine *gin.Engine, baseHandler *ha
 	rootMiddleware := []gin.HandlerFunc{m.managementAvailabilityMiddleware(), noCORSMiddleware(), m.localhostOnlyMiddleware()}
 	engine.GET("/threads/*path", append(rootMiddleware, proxyHandler)...)
 	engine.GET("/threads.rss", append(rootMiddleware, proxyHandler)...)
+	engine.GET("/news.rss", append(rootMiddleware, proxyHandler)...)
 
 	// Root-level auth routes for CLI login flow
 	// Amp uses multiple auth routes: /auth/cli-login, /auth/callback, /auth/sign-in, /auth/logout
@@ -171,7 +172,7 @@ func (m *AmpModule) registerManagementRoutes(engine *gin.Engine, baseHandler *ha
 	geminiBridge := createGeminiBridgeHandler(geminiHandlers.GeminiHandler)
 	geminiV1Beta1Fallback := NewFallbackHandlerWithMapper(func() *httputil.ReverseProxy {
 		return m.getProxy()
-	}, m.modelMapper)
+	}, m.modelMapper, m.forceModelMappings)
 	geminiV1Beta1Handler := geminiV1Beta1Fallback.WrapHandler(geminiBridge)
 
 	// Route POST model calls through Gemini bridge with FallbackHandler.
@@ -209,7 +210,7 @@ func (m *AmpModule) registerProviderAliases(engine *gin.Engine, baseHandler *han
 	// Also includes model mapping support for routing unavailable models to alternatives
 	fallbackHandler := NewFallbackHandlerWithMapper(func() *httputil.ReverseProxy {
 		return m.getProxy()
-	}, m.modelMapper)
+	}, m.modelMapper, m.forceModelMappings)
 
 	// Provider-specific routes under /api/provider/:provider
 	ampProviders := engine.Group("/api/provider")

internal/api/server.go

@@ -300,7 +300,7 @@ func NewServer(cfg *config.Config, authManager *auth.Manager, accessManager *sdk
 
 	// Create HTTP server
 	s.server = &http.Server{
-		Addr:    fmt.Sprintf(":%d", cfg.Port),
+		Addr:    fmt.Sprintf("%s:%d", cfg.Host, cfg.Port),
 		Handler: engine,
 	}
 
@@ -520,6 +520,26 @@ func (s *Server) registerManagementRoutes() {
 		mgmt.PUT("/ws-auth", s.mgmt.PutWebsocketAuth)
 		mgmt.PATCH("/ws-auth", s.mgmt.PutWebsocketAuth)
 
+		mgmt.GET("/ampcode", s.mgmt.GetAmpCode)
+		mgmt.GET("/ampcode/upstream-url", s.mgmt.GetAmpUpstreamURL)
+		mgmt.PUT("/ampcode/upstream-url", s.mgmt.PutAmpUpstreamURL)
+		mgmt.PATCH("/ampcode/upstream-url", s.mgmt.PutAmpUpstreamURL)
+		mgmt.DELETE("/ampcode/upstream-url", s.mgmt.DeleteAmpUpstreamURL)
+		mgmt.GET("/ampcode/upstream-api-key", s.mgmt.GetAmpUpstreamAPIKey)
+		mgmt.PUT("/ampcode/upstream-api-key", s.mgmt.PutAmpUpstreamAPIKey)
+		mgmt.PATCH("/ampcode/upstream-api-key", s.mgmt.PutAmpUpstreamAPIKey)
+		mgmt.DELETE("/ampcode/upstream-api-key", s.mgmt.DeleteAmpUpstreamAPIKey)
+		mgmt.GET("/ampcode/restrict-management-to-localhost", s.mgmt.GetAmpRestrictManagementToLocalhost)
+		mgmt.PUT("/ampcode/restrict-management-to-localhost", s.mgmt.PutAmpRestrictManagementToLocalhost)
+		mgmt.PATCH("/ampcode/restrict-management-to-localhost", s.mgmt.PutAmpRestrictManagementToLocalhost)
+		mgmt.GET("/ampcode/model-mappings", s.mgmt.GetAmpModelMappings)
+		mgmt.PUT("/ampcode/model-mappings", s.mgmt.PutAmpModelMappings)
+		mgmt.PATCH("/ampcode/model-mappings", s.mgmt.PatchAmpModelMappings)
+		mgmt.DELETE("/ampcode/model-mappings", s.mgmt.DeleteAmpModelMappings)
+		mgmt.GET("/ampcode/force-model-mappings", s.mgmt.GetAmpForceModelMappings)
+		mgmt.PUT("/ampcode/force-model-mappings", s.mgmt.PutAmpForceModelMappings)
+		mgmt.PATCH("/ampcode/force-model-mappings", s.mgmt.PutAmpForceModelMappings)
+
 		mgmt.GET("/request-retry", s.mgmt.GetRequestRetry)
 		mgmt.PUT("/request-retry", s.mgmt.PutRequestRetry)
 		mgmt.PATCH("/request-retry", s.mgmt.PutRequestRetry)

internal/auth/gemini/gemini_auth.go

@@ -76,7 +76,8 @@ func (g *GeminiAuth) GetAuthenticatedClient(ctx context.Context, ts *GeminiToken
 			auth := &proxy.Auth{User: username, Password: password}
 			dialer, errSOCKS5 := proxy.SOCKS5("tcp", proxyURL.Host, auth, proxy.Direct)
 			if errSOCKS5 != nil {
-				log.Fatalf("create SOCKS5 dialer failed: %v", errSOCKS5)
+				log.Errorf("create SOCKS5 dialer failed: %v", errSOCKS5)
+				return nil, fmt.Errorf("create SOCKS5 dialer failed: %w", errSOCKS5)
 			}
 			transport = &http.Transport{
 				DialContext: func(ctx context.Context, network, addr string) (net.Conn, error) {
@@ -238,7 +239,11 @@ func (g *GeminiAuth) getTokenFromWeb(ctx context.Context, config *oauth2.Config,
 	// Start the server in a goroutine.
 	go func() {
 		if err := server.ListenAndServe(); !errors.Is(err, http.ErrServerClosed) {
-			log.Fatalf("ListenAndServe(): %v", err)
+			log.Errorf("ListenAndServe(): %v", err)
+			select {
+			case errChan <- err:
+			default:
+			}
 		}
 	}()
 

internal/auth/iflow/iflow_auth.go

@@ -309,17 +309,23 @@ func (ia *IFlowAuth) AuthenticateWithCookie(ctx context.Context, cookie string)
 		return nil, fmt.Errorf("iflow cookie authentication: cookie is empty")
 	}
 
-	// First, get initial API key information using GET request
+	// First, get initial API key information using GET request to obtain the name
 	keyInfo, err := ia.fetchAPIKeyInfo(ctx, cookie)
 	if err != nil {
 		return nil, fmt.Errorf("iflow cookie authentication: fetch initial API key info failed: %w", err)
 	}
 
-	// Convert to token data format
+	// Refresh the API key using POST request
+	refreshedKeyInfo, err := ia.RefreshAPIKey(ctx, cookie, keyInfo.Name)
+	if err != nil {
+		return nil, fmt.Errorf("iflow cookie authentication: refresh API key failed: %w", err)
+	}
+
+	// Convert to token data format using refreshed key
 	data := &IFlowTokenData{
-		APIKey: keyInfo.APIKey,
-		Expire: keyInfo.ExpireTime,
-		Email:  keyInfo.Name,
+		APIKey: refreshedKeyInfo.APIKey,
+		Expire: refreshedKeyInfo.ExpireTime,
+		Email:  refreshedKeyInfo.Name,
 		Cookie: cookie,
 	}
 

internal/cmd/login.go

@@ -65,20 +65,20 @@ func DoLogin(cfg *config.Config, projectID string, options *LoginOptions) {
 	authenticator := sdkAuth.NewGeminiAuthenticator()
 	record, errLogin := authenticator.Login(ctx, cfg, loginOpts)
 	if errLogin != nil {
-		log.Fatalf("Gemini authentication failed: %v", errLogin)
+		log.Errorf("Gemini authentication failed: %v", errLogin)
 		return
 	}
 
 	storage, okStorage := record.Storage.(*gemini.GeminiTokenStorage)
 	if !okStorage || storage == nil {
-		log.Fatal("Gemini authentication failed: unsupported token storage")
+		log.Error("Gemini authentication failed: unsupported token storage")
 		return
 	}
 
 	geminiAuth := gemini.NewGeminiAuth()
 	httpClient, errClient := geminiAuth.GetAuthenticatedClient(ctx, storage, cfg, options.NoBrowser)
 	if errClient != nil {
-		log.Fatalf("Gemini authentication failed: %v", errClient)
+		log.Errorf("Gemini authentication failed: %v", errClient)
 		return
 	}
 
@@ -86,7 +86,7 @@ func DoLogin(cfg *config.Config, projectID string, options *LoginOptions) {
 
 	projects, errProjects := fetchGCPProjects(ctx, httpClient)
 	if errProjects != nil {
-		log.Fatalf("Failed to get project list: %v", errProjects)
+		log.Errorf("Failed to get project list: %v", errProjects)
 		return
 	}
 
@@ -98,11 +98,11 @@ func DoLogin(cfg *config.Config, projectID string, options *LoginOptions) {
 	selectedProjectID := promptForProjectSelection(projects, strings.TrimSpace(projectID), promptFn)
 	projectSelections, errSelection := resolveProjectSelections(selectedProjectID, projects)
 	if errSelection != nil {
-		log.Fatalf("Invalid project selection: %v", errSelection)
+		log.Errorf("Invalid project selection: %v", errSelection)
 		return
 	}
 	if len(projectSelections) == 0 {
-		log.Fatal("No project selected; aborting login.")
+		log.Error("No project selected; aborting login.")
 		return
 	}
 
@@ -116,7 +116,7 @@ func DoLogin(cfg *config.Config, projectID string, options *LoginOptions) {
 				showProjectSelectionHelp(storage.Email, projects)
 				return
 			}
-			log.Fatalf("Failed to complete user setup: %v", errSetup)
+			log.Errorf("Failed to complete user setup: %v", errSetup)
 			return
 		}
 		finalID := strings.TrimSpace(storage.ProjectID)
@@ -133,11 +133,11 @@ func DoLogin(cfg *config.Config, projectID string, options *LoginOptions) {
 		for _, pid := range activatedProjects {
 			isChecked, errCheck := checkCloudAPIIsEnabled(ctx, httpClient, pid)
 			if errCheck != nil {
-				log.Fatalf("Failed to check if Cloud AI API is enabled for %s: %v", pid, errCheck)
+				log.Errorf("Failed to check if Cloud AI API is enabled for %s: %v", pid, errCheck)
 				return
 			}
 			if !isChecked {
-				log.Fatalf("Failed to check if Cloud AI API is enabled for project %s. If you encounter an error message, please create an issue.", pid)
+				log.Errorf("Failed to check if Cloud AI API is enabled for project %s. If you encounter an error message, please create an issue.", pid)
 				return
 			}
 		}
@@ -153,7 +153,7 @@ func DoLogin(cfg *config.Config, projectID string, options *LoginOptions) {
 
 	savedPath, errSave := store.Save(ctx, record)
 	if errSave != nil {
-		log.Fatalf("Failed to save token to file: %v", errSave)
+		log.Errorf("Failed to save token to file: %v", errSave)
 		return
 	}
 
@@ -555,6 +555,7 @@ func checkCloudAPIIsEnabled(ctx context.Context, httpClient *http.Client, projec
 				continue
 			}
 		}
+		_ = resp.Body.Close()
 		return false, fmt.Errorf("project activation required: %s", errMessage)
 	}
 	return true, nil

internal/cmd/run.go

@@ -45,12 +45,13 @@ func StartService(cfg *config.Config, configPath string, localPassword string) {
 
 	service, err := builder.Build()
 	if err != nil {
-		log.Fatalf("failed to build proxy service: %v", err)
+		log.Errorf("failed to build proxy service: %v", err)
+		return
 	}
 
 	err = service.Run(runCtx)
 	if err != nil && !errors.Is(err, context.Canceled) {
-		log.Fatalf("proxy service exited with error: %v", err)
+		log.Errorf("proxy service exited with error: %v", err)
 	}
 }
 

internal/cmd/vertex_import.go

@@ -29,30 +29,30 @@ func DoVertexImport(cfg *config.Config, keyPath string) {
 	}
 	rawPath := strings.TrimSpace(keyPath)
 	if rawPath == "" {
-		log.Fatalf("vertex-import: missing service account key path")
+		log.Errorf("vertex-import: missing service account key path")
 		return
 	}
 	data, errRead := os.ReadFile(rawPath)
 	if errRead != nil {
-		log.Fatalf("vertex-import: read file failed: %v", errRead)
+		log.Errorf("vertex-import: read file failed: %v", errRead)
 		return
 	}
 	var sa map[string]any
 	if errUnmarshal := json.Unmarshal(data, &sa); errUnmarshal != nil {
-		log.Fatalf("vertex-import: invalid service account json: %v", errUnmarshal)
+		log.Errorf("vertex-import: invalid service account json: %v", errUnmarshal)
 		return
 	}
 	// Validate and normalize private_key before saving
 	normalizedSA, errFix := vertex.NormalizeServiceAccountMap(sa)
 	if errFix != nil {
-		log.Fatalf("vertex-import: %v", errFix)
+		log.Errorf("vertex-import: %v", errFix)
 		return
 	}
 	sa = normalizedSA
 	email, _ := sa["client_email"].(string)
 	projectID, _ := sa["project_id"].(string)
 	if strings.TrimSpace(projectID) == "" {
-		log.Fatalf("vertex-import: project_id missing in service account json")
+		log.Errorf("vertex-import: project_id missing in service account json")
 		return
 	}
 	if strings.TrimSpace(email) == "" {
@@ -92,7 +92,7 @@ func DoVertexImport(cfg *config.Config, keyPath string) {
 	}
 	path, errSave := store.Save(context.Background(), record)
 	if errSave != nil {
-		log.Fatalf("vertex-import: save credential failed: %v", errSave)
+		log.Errorf("vertex-import: save credential failed: %v", errSave)
 		return
 	}
 	fmt.Printf("Vertex credentials imported: %s\n", path)

internal/config/config.go

@@ -20,6 +20,9 @@ import (
 // Config represents the application's configuration, loaded from a YAML file.
 type Config struct {
 	config.SDKConfig `yaml:",inline"`
+	// Host is the network host/interface on which the API server will bind.
+	// Default is empty ("") to bind all interfaces (IPv4 + IPv6). Use "127.0.0.1" or "localhost" for local-only access.
+	Host string `yaml:"host" json:"-"`
 	// Port is the network port on which the API server will listen.
 	Port int `yaml:"port" json:"-"`
 
@@ -143,6 +146,10 @@ type AmpCode struct {
 	// When Amp requests a model that isn't available locally, these mappings
 	// allow routing to an alternative model that IS available.
 	ModelMappings []AmpModelMapping `yaml:"model-mappings" json:"model-mappings"`
+
+	// ForceModelMappings when true, model mappings take precedence over local API keys.
+	// When false (default), local API keys are used first if available.
+	ForceModelMappings bool `yaml:"force-model-mappings" json:"force-model-mappings"`
 }
 
 // PayloadConfig defines default and override parameter rules applied to provider payloads.
@@ -316,6 +323,7 @@ func LoadConfigOptional(configFile string, optional bool) (*Config, error) {
 	// Unmarshal the YAML data into the Config struct.
 	var cfg Config
 	// Set defaults before unmarshal so that absent keys keep defaults.
+	cfg.Host = "" // Default empty: binds to all interfaces (IPv4 + IPv6)
 	cfg.LoggingToFile = false
 	cfg.UsageStatisticsEnabled = false
 	cfg.DisableCooling = false

internal/logging/request_logger.go

@@ -84,6 +84,26 @@ type StreamingLogWriter interface {
 	//   - error: An error if writing fails, nil otherwise
 	WriteStatus(status int, headers map[string][]string) error
 
+	// WriteAPIRequest writes the upstream API request details to the log.
+	// This should be called before WriteStatus to maintain proper log ordering.
+	//
+	// Parameters:
+	//   - apiRequest: The API request data (typically includes URL, headers, body sent upstream)
+	//
+	// Returns:
+	//   - error: An error if writing fails, nil otherwise
+	WriteAPIRequest(apiRequest []byte) error
+
+	// WriteAPIResponse writes the upstream API response details to the log.
+	// This should be called after the streaming response is complete.
+	//
+	// Parameters:
+	//   - apiResponse: The API response data
+	//
+	// Returns:
+	//   - error: An error if writing fails, nil otherwise
+	WriteAPIResponse(apiResponse []byte) error
+
 	// Close finalizes the log file and cleans up resources.
 	//
 	// Returns:
@@ -248,10 +268,11 @@ func (l *FileRequestLogger) LogStreamingRequest(url, method string, headers map[
 
 	// Create streaming writer
 	writer := &FileStreamingLogWriter{
-		file:      file,
-		chunkChan: make(chan []byte, 100), // Buffered channel for async writes
-		closeChan: make(chan struct{}),
-		errorChan: make(chan error, 1),
+		file:           file,
+		chunkChan:      make(chan []byte, 100), // Buffered channel for async writes
+		closeChan:      make(chan struct{}),
+		errorChan:      make(chan error, 1),
+		bufferedChunks: &bytes.Buffer{},
 	}
 
 	// Start async writer goroutine
@@ -628,11 +649,12 @@ func (l *FileRequestLogger) formatRequestInfo(url, method string, headers map[st
 
 // FileStreamingLogWriter implements StreamingLogWriter for file-based streaming logs.
 // It handles asynchronous writing of streaming response chunks to a file.
+// All data is buffered and written in the correct order when Close is called.
 type FileStreamingLogWriter struct {
 	// file is the file where log data is written.
 	file *os.File
 
-	// chunkChan is a channel for receiving response chunks to write.
+	// chunkChan is a channel for receiving response chunks to buffer.
 	chunkChan chan []byte
 
 	// closeChan is a channel for signaling when the writer is closed.
@@ -641,8 +663,23 @@ type FileStreamingLogWriter struct {
 	// errorChan is a channel for reporting errors during writing.
 	errorChan chan error
 
-	// statusWritten indicates whether the response status has been written.
+	// bufferedChunks stores the response chunks in order.
+	bufferedChunks *bytes.Buffer
+
+	// responseStatus stores the HTTP status code.
+	responseStatus int
+
+	// statusWritten indicates whether a non-zero status was recorded.
 	statusWritten bool
+
+	// responseHeaders stores the response headers.
+	responseHeaders map[string][]string
+
+	// apiRequest stores the upstream API request data.
+	apiRequest []byte
+
+	// apiResponse stores the upstream API response data.
+	apiResponse []byte
 }
 
 // WriteChunkAsync writes a response chunk asynchronously (non-blocking).
@@ -666,39 +703,65 @@ func (w *FileStreamingLogWriter) WriteChunkAsync(chunk []byte) {
 	}
 }
 
-// WriteStatus writes the response status and headers to the log.
+// WriteStatus buffers the response status and headers for later writing.
 //
 // Parameters:
 //   - status: The response status code
 //   - headers: The response headers
 //
 // Returns:
-//   - error: An error if writing fails, nil otherwise
+//   - error: Always returns nil (buffering cannot fail)
 func (w *FileStreamingLogWriter) WriteStatus(status int, headers map[string][]string) error {
-	if w.file == nil || w.statusWritten {
+	if status == 0 {
 		return nil
 	}
 
-	var content strings.Builder
-	content.WriteString("========================================\n")
-	content.WriteString("=== RESPONSE ===\n")
-	content.WriteString(fmt.Sprintf("Status: %d\n", status))
-
-	for key, values := range headers {
-		for _, value := range values {
-			content.WriteString(fmt.Sprintf("%s: %s\n", key, value))
+	w.responseStatus = status
+	if headers != nil {
+		w.responseHeaders = make(map[string][]string, len(headers))
+		for key, values := range headers {
+			headerValues := make([]string, len(values))
+			copy(headerValues, values)
+			w.responseHeaders[key] = headerValues
 		}
 	}
-	content.WriteString("\n")
+	w.statusWritten = true
+	return nil
+}
 
-	_, err := w.file.WriteString(content.String())
-	if err == nil {
-		w.statusWritten = true
+// WriteAPIRequest buffers the upstream API request details for later writing.
+//
+// Parameters:
+//   - apiRequest: The API request data (typically includes URL, headers, body sent upstream)
+//
+// Returns:
+//   - error: Always returns nil (buffering cannot fail)
+func (w *FileStreamingLogWriter) WriteAPIRequest(apiRequest []byte) error {
+	if len(apiRequest) == 0 {
+		return nil
 	}
-	return err
+	w.apiRequest = bytes.Clone(apiRequest)
+	return nil
+}
+
+// WriteAPIResponse buffers the upstream API response details for later writing.
+//
+// Parameters:
+//   - apiResponse: The API response data
+//
+// Returns:
+//   - error: Always returns nil (buffering cannot fail)
+func (w *FileStreamingLogWriter) WriteAPIResponse(apiResponse []byte) error {
+	if len(apiResponse) == 0 {
+		return nil
+	}
+	w.apiResponse = bytes.Clone(apiResponse)
+	return nil
 }
 
 // Close finalizes the log file and cleans up resources.
+// It writes all buffered data to the file in the correct order:
+// API REQUEST -> API RESPONSE -> RESPONSE (status, headers, body chunks)
 //
 // Returns:
 //   - error: An error if closing fails, nil otherwise
@@ -707,27 +770,84 @@ func (w *FileStreamingLogWriter) Close() error {
 		close(w.chunkChan)
 	}
 
-	// Wait for async writer to finish
+	// Wait for async writer to finish buffering chunks
 	if w.closeChan != nil {
 		<-w.closeChan
 		w.chunkChan = nil
 	}
 
-	if w.file != nil {
-		return w.file.Close()
+	if w.file == nil {
+		return nil
 	}
 
-	return nil
+	// Write all content in the correct order
+	var content strings.Builder
+
+	// 1. Write API REQUEST section
+	if len(w.apiRequest) > 0 {
+		if bytes.HasPrefix(w.apiRequest, []byte("=== API REQUEST")) {
+			content.Write(w.apiRequest)
+			if !bytes.HasSuffix(w.apiRequest, []byte("\n")) {
+				content.WriteString("\n")
+			}
+		} else {
+			content.WriteString("=== API REQUEST ===\n")
+			content.Write(w.apiRequest)
+			content.WriteString("\n")
+		}
+		content.WriteString("\n")
+	}
+
+	// 2. Write API RESPONSE section
+	if len(w.apiResponse) > 0 {
+		if bytes.HasPrefix(w.apiResponse, []byte("=== API RESPONSE")) {
+			content.Write(w.apiResponse)
+			if !bytes.HasSuffix(w.apiResponse, []byte("\n")) {
+				content.WriteString("\n")
+			}
+		} else {
+			content.WriteString("=== API RESPONSE ===\n")
+			content.Write(w.apiResponse)
+			content.WriteString("\n")
+		}
+		content.WriteString("\n")
+	}
+
+	// 3. Write RESPONSE section (status, headers, buffered chunks)
+	content.WriteString("=== RESPONSE ===\n")
+	if w.statusWritten {
+		content.WriteString(fmt.Sprintf("Status: %d\n", w.responseStatus))
+	}
+
+	for key, values := range w.responseHeaders {
+		for _, value := range values {
+			content.WriteString(fmt.Sprintf("%s: %s\n", key, value))
+		}
+	}
+	content.WriteString("\n")
+
+	// Write buffered response body chunks
+	if w.bufferedChunks != nil && w.bufferedChunks.Len() > 0 {
+		content.Write(w.bufferedChunks.Bytes())
+	}
+
+	// Write the complete content to file
+	if _, err := w.file.WriteString(content.String()); err != nil {
+		_ = w.file.Close()
+		return err
+	}
+
+	return w.file.Close()
 }
 
-// asyncWriter runs in a goroutine to handle async chunk writing.
-// It continuously reads chunks from the channel and writes them to the file.
+// asyncWriter runs in a goroutine to buffer chunks from the channel.
+// It continuously reads chunks from the channel and buffers them for later writing.
 func (w *FileStreamingLogWriter) asyncWriter() {
 	defer close(w.closeChan)
 
 	for chunk := range w.chunkChan {
-		if w.file != nil {
-			_, _ = w.file.Write(chunk)
+		if w.bufferedChunks != nil {
+			w.bufferedChunks.Write(chunk)
 		}
 	}
 }
@@ -754,6 +874,28 @@ func (w *NoOpStreamingLogWriter) WriteStatus(_ int, _ map[string][]string) error
 	return nil
 }
 
+// WriteAPIRequest is a no-op implementation that does nothing and always returns nil.
+//
+// Parameters:
+//   - apiRequest: The API request data (ignored)
+//
+// Returns:
+//   - error: Always returns nil
+func (w *NoOpStreamingLogWriter) WriteAPIRequest(_ []byte) error {
+	return nil
+}
+
+// WriteAPIResponse is a no-op implementation that does nothing and always returns nil.
+//
+// Parameters:
+//   - apiResponse: The API response data (ignored)
+//
+// Returns:
+//   - error: Always returns nil
+func (w *NoOpStreamingLogWriter) WriteAPIResponse(_ []byte) error {
+	return nil
+}
+
 // Close is a no-op implementation that does nothing and always returns nil.
 //
 // Returns:

internal/registry/model_definitions.go

@@ -693,8 +693,8 @@ func GetOpenAIModels() []*ModelInfo {
 			OwnedBy:             "openai",
 			Type:                "openai",
 			Version:             "gpt-5.1-2025-11-12",
-			DisplayName:         "GPT 5 Low",
-			Description:         "Stable version of GPT 5, The best model for coding and agentic tasks across domains.",
+			DisplayName:         "GPT 5.1 Nothink",
+			Description:         "Stable version of GPT 5.1, The best model for coding and agentic tasks across domains.",
 			ContextLength:       400000,
 			MaxCompletionTokens: 128000,
 			SupportedParameters: []string{"tools"},
@@ -719,8 +719,8 @@ func GetOpenAIModels() []*ModelInfo {
 			OwnedBy:             "openai",
 			Type:                "openai",
 			Version:             "gpt-5.1-2025-11-12",
-			DisplayName:         "GPT 5 Medium",
-			Description:         "Stable version of GPT 5, The best model for coding and agentic tasks across domains.",
+			DisplayName:         "GPT 5.1 Medium",
+			Description:         "Stable version of GPT 5.1, The best model for coding and agentic tasks across domains.",
 			ContextLength:       400000,
 			MaxCompletionTokens: 128000,
 			SupportedParameters: []string{"tools"},
@@ -732,8 +732,8 @@ func GetOpenAIModels() []*ModelInfo {
 			OwnedBy:             "openai",
 			Type:                "openai",
 			Version:             "gpt-5.1-2025-11-12",
-			DisplayName:         "GPT 5 High",
-			Description:         "Stable version of GPT 5, The best model for coding and agentic tasks across domains.",
+			DisplayName:         "GPT 5.1 High",
+			Description:         "Stable version of GPT 5.1, The best model for coding and agentic tasks across domains.",
 			ContextLength:       400000,
 			MaxCompletionTokens: 128000,
 			SupportedParameters: []string{"tools"},
@@ -745,8 +745,8 @@ func GetOpenAIModels() []*ModelInfo {
 			OwnedBy:             "openai",
 			Type:                "openai",
 			Version:             "gpt-5.1-2025-11-12",
-			DisplayName:         "GPT 5 Codex",
-			Description:         "Stable version of GPT 5 Codex, The best model for coding and agentic tasks across domains.",
+			DisplayName:         "GPT 5.1 Codex",
+			Description:         "Stable version of GPT 5.1 Codex, The best model for coding and agentic tasks across domains.",
 			ContextLength:       400000,
 			MaxCompletionTokens: 128000,
 			SupportedParameters: []string{"tools"},
@@ -758,8 +758,8 @@ func GetOpenAIModels() []*ModelInfo {
 			OwnedBy:             "openai",
 			Type:                "openai",
 			Version:             "gpt-5.1-2025-11-12",
-			DisplayName:         "GPT 5 Codex Low",
-			Description:         "Stable version of GPT 5 Codex, The best model for coding and agentic tasks across domains.",
+			DisplayName:         "GPT 5.1 Codex Low",
+			Description:         "Stable version of GPT 5.1 Codex, The best model for coding and agentic tasks across domains.",
 			ContextLength:       400000,
 			MaxCompletionTokens: 128000,
 			SupportedParameters: []string{"tools"},
@@ -771,8 +771,8 @@ func GetOpenAIModels() []*ModelInfo {
 			OwnedBy:             "openai",
 			Type:                "openai",
 			Version:             "gpt-5.1-2025-11-12",
-			DisplayName:         "GPT 5 Codex Medium",
-			Description:         "Stable version of GPT 5 Codex, The best model for coding and agentic tasks across domains.",
+			DisplayName:         "GPT 5.1 Codex Medium",
+			Description:         "Stable version of GPT 5.1 Codex, The best model for coding and agentic tasks across domains.",
 			ContextLength:       400000,
 			MaxCompletionTokens: 128000,
 			SupportedParameters: []string{"tools"},
@@ -784,8 +784,8 @@ func GetOpenAIModels() []*ModelInfo {
 			OwnedBy:             "openai",
 			Type:                "openai",
 			Version:             "gpt-5.1-2025-11-12",
-			DisplayName:         "GPT 5 Codex High",
-			Description:         "Stable version of GPT 5 Codex, The best model for coding and agentic tasks across domains.",
+			DisplayName:         "GPT 5.1 Codex High",
+			Description:         "Stable version of GPT 5.1 Codex, The best model for coding and agentic tasks across domains.",
 			ContextLength:       400000,
 			MaxCompletionTokens: 128000,
 			SupportedParameters: []string{"tools"},
@@ -797,8 +797,8 @@ func GetOpenAIModels() []*ModelInfo {
 			OwnedBy:             "openai",
 			Type:                "openai",
 			Version:             "gpt-5.1-2025-11-12",
-			DisplayName:         "GPT 5 Codex Mini",
-			Description:         "Stable version of GPT 5 Codex Mini: cheaper, faster, but less capable version of GPT 5 Codex.",
+			DisplayName:         "GPT 5.1 Codex Mini",
+			Description:         "Stable version of GPT 5.1 Codex Mini: cheaper, faster, but less capable version of GPT 5.1 Codex.",
 			ContextLength:       400000,
 			MaxCompletionTokens: 128000,
 			SupportedParameters: []string{"tools"},
@@ -810,8 +810,8 @@ func GetOpenAIModels() []*ModelInfo {
 			OwnedBy:             "openai",
 			Type:                "openai",
 			Version:             "gpt-5.1-2025-11-12",
-			DisplayName:         "GPT 5 Codex Mini Medium",
-			Description:         "Stable version of GPT 5 Codex Mini: cheaper, faster, but less capable version of GPT 5 Codex.",
+			DisplayName:         "GPT 5.1 Codex Mini Medium",
+			Description:         "Stable version of GPT 5.1 Codex Mini: cheaper, faster, but less capable version of GPT 5.1 Codex.",
 			ContextLength:       400000,
 			MaxCompletionTokens: 128000,
 			SupportedParameters: []string{"tools"},
@@ -823,8 +823,8 @@ func GetOpenAIModels() []*ModelInfo {
 			OwnedBy:             "openai",
 			Type:                "openai",
 			Version:             "gpt-5.1-2025-11-12",
-			DisplayName:         "GPT 5 Codex Mini High",
-			Description:         "Stable version of GPT 5 Codex Mini: cheaper, faster, but less capable version of GPT 5 Codex.",
+			DisplayName:         "GPT 5.1 Codex Mini High",
+			Description:         "Stable version of GPT 5.1 Codex Mini: cheaper, faster, but less capable version of GPT 5.1 Codex.",
 			ContextLength:       400000,
 			MaxCompletionTokens: 128000,
 			SupportedParameters: []string{"tools"},
@@ -837,8 +837,8 @@ func GetOpenAIModels() []*ModelInfo {
 			OwnedBy:             "openai",
 			Type:                "openai",
 			Version:             "gpt-5.1-max",
-			DisplayName:         "GPT 5 Codex Max",
-			Description:         "Stable version of GPT 5 Codex Max",
+			DisplayName:         "GPT 5.1 Codex Max",
+			Description:         "Stable version of GPT 5.1 Codex Max",
 			ContextLength:       400000,
 			MaxCompletionTokens: 128000,
 			SupportedParameters: []string{"tools"},
@@ -850,8 +850,8 @@ func GetOpenAIModels() []*ModelInfo {
 			OwnedBy:             "openai",
 			Type:                "openai",
 			Version:             "gpt-5.1-max",
-			DisplayName:         "GPT 5 Codex Max Low",
-			Description:         "Stable version of GPT 5 Codex Max Low",
+			DisplayName:         "GPT 5.1 Codex Max Low",
+			Description:         "Stable version of GPT 5.1 Codex Max Low",
 			ContextLength:       400000,
 			MaxCompletionTokens: 128000,
 			SupportedParameters: []string{"tools"},
@@ -863,8 +863,8 @@ func GetOpenAIModels() []*ModelInfo {
 			OwnedBy:             "openai",
 			Type:                "openai",
 			Version:             "gpt-5.1-max",
-			DisplayName:         "GPT 5 Codex Max Medium",
-			Description:         "Stable version of GPT 5 Codex Max Medium",
+			DisplayName:         "GPT 5.1 Codex Max Medium",
+			Description:         "Stable version of GPT 5.1 Codex Max Medium",
 			ContextLength:       400000,
 			MaxCompletionTokens: 128000,
 			SupportedParameters: []string{"tools"},
@@ -876,8 +876,8 @@ func GetOpenAIModels() []*ModelInfo {
 			OwnedBy:             "openai",
 			Type:                "openai",
 			Version:             "gpt-5.1-max",
-			DisplayName:         "GPT 5 Codex Max High",
-			Description:         "Stable version of GPT 5 Codex Max High",
+			DisplayName:         "GPT 5.1 Codex Max High",
+			Description:         "Stable version of GPT 5.1 Codex Max High",
 			ContextLength:       400000,
 			MaxCompletionTokens: 128000,
 			SupportedParameters: []string{"tools"},
@@ -889,8 +889,8 @@ func GetOpenAIModels() []*ModelInfo {
 			OwnedBy:             "openai",
 			Type:                "openai",
 			Version:             "gpt-5.1-max",
-			DisplayName:         "GPT 5 Codex Max XHigh",
-			Description:         "Stable version of GPT 5 Codex Max XHigh",
+			DisplayName:         "GPT 5.1 Codex Max XHigh",
+			Description:         "Stable version of GPT 5.1 Codex Max XHigh",
 			ContextLength:       400000,
 			MaxCompletionTokens: 128000,
 			SupportedParameters: []string{"tools"},
@@ -944,7 +944,6 @@ func GetQwenModels() []*ModelInfo {
 }
 
 // GetIFlowModels returns supported models for iFlow OAuth accounts.
-
 func GetIFlowModels() []*ModelInfo {
 	entries := []struct {
 		ID          string
@@ -986,3 +985,25 @@ func GetIFlowModels() []*ModelInfo {
 	}
 	return models
 }
+
+// AntigravityModelConfig captures static antigravity model overrides, including
+// Thinking budget limits and provider max completion tokens.
+type AntigravityModelConfig struct {
+	Thinking            *ThinkingSupport
+	MaxCompletionTokens int
+	Name                string
+}
+
+// GetAntigravityModelConfig returns static configuration for antigravity models.
+// Keys use the ALIASED model names (after modelName2Alias conversion) for direct lookup.
+func GetAntigravityModelConfig() map[string]*AntigravityModelConfig {
+	return map[string]*AntigravityModelConfig{
+		"gemini-2.5-flash":                        {Thinking: &ThinkingSupport{Min: 0, Max: 24576, ZeroAllowed: true, DynamicAllowed: true}, Name: "models/gemini-2.5-flash"},
+		"gemini-2.5-flash-lite":                   {Thinking: &ThinkingSupport{Min: 0, Max: 24576, ZeroAllowed: true, DynamicAllowed: true}, Name: "models/gemini-2.5-flash-lite"},
+		"gemini-2.5-computer-use-preview-10-2025": {Name: "models/gemini-2.5-computer-use-preview-10-2025"},
+		"gemini-3-pro-preview":                    {Thinking: &ThinkingSupport{Min: 128, Max: 32768, ZeroAllowed: false, DynamicAllowed: true}, Name: "models/gemini-3-pro-preview"},
+		"gemini-3-pro-image-preview":              {Thinking: &ThinkingSupport{Min: 128, Max: 32768, ZeroAllowed: false, DynamicAllowed: true}, Name: "models/gemini-3-pro-image-preview"},
+		"gemini-claude-sonnet-4-5-thinking":       {Thinking: &ThinkingSupport{Min: 1024, Max: 200000, ZeroAllowed: false, DynamicAllowed: true}, MaxCompletionTokens: 64000},
+		"gemini-claude-opus-4-5-thinking":         {Thinking: &ThinkingSupport{Min: 1024, Max: 200000, ZeroAllowed: false, DynamicAllowed: true}, MaxCompletionTokens: 64000},
+	}
+}

internal/runtime/executor/aistudio_executor.go

@@ -309,7 +309,9 @@ func (e *AIStudioExecutor) translateRequest(req cliproxyexecutor.Request, opts c
 	to := sdktranslator.FromString("gemini")
 	payload := sdktranslator.TranslateRequest(from, to, req.Model, bytes.Clone(req.Payload), stream)
 	payload = applyThinkingMetadata(payload, req.Metadata, req.Model)
+	payload = util.ApplyDefaultThinkingIfNeeded(req.Model, payload)
 	payload = util.ConvertThinkingLevelToBudget(payload)
+	payload = util.NormalizeGeminiThinkingBudget(req.Model, payload)
 	payload = util.StripThinkingConfigIfUnsupported(req.Model, payload)
 	payload = fixGeminiImageAspectRatio(req.Model, payload)
 	payload = applyPayloadConfig(e.cfg, req.Model, payload)

internal/runtime/executor/antigravity_executor.go

@@ -27,18 +27,18 @@ import (
 )
 
 const (
-	antigravityBaseURLDaily        = "https://daily-cloudcode-pa.sandbox.googleapis.com"
-	antigravityBaseURLAutopush     = "https://autopush-cloudcode-pa.sandbox.googleapis.com"
-	antigravityBaseURLProd         = "https://cloudcode-pa.googleapis.com"
-	antigravityStreamPath          = "/v1internal:streamGenerateContent"
-	antigravityGeneratePath        = "/v1internal:generateContent"
-	antigravityModelsPath          = "/v1internal:fetchAvailableModels"
-	antigravityClientID            = "1071006060591-tmhssin2h21lcre235vtolojh4g403ep.apps.googleusercontent.com"
-	antigravityClientSecret        = "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"
-	defaultAntigravityAgent        = "antigravity/1.11.5 windows/amd64"
-	antigravityAuthType            = "antigravity"
-	refreshSkew                    = 3000 * time.Second
-	streamScannerBuffer        int = 20_971_520
+	antigravityBaseURLDaily = "https://daily-cloudcode-pa.sandbox.googleapis.com"
+	// antigravityBaseURLAutopush     = "https://autopush-cloudcode-pa.sandbox.googleapis.com"
+	antigravityBaseURLProd      = "https://cloudcode-pa.googleapis.com"
+	antigravityStreamPath       = "/v1internal:streamGenerateContent"
+	antigravityGeneratePath     = "/v1internal:generateContent"
+	antigravityModelsPath       = "/v1internal:fetchAvailableModels"
+	antigravityClientID         = "1071006060591-tmhssin2h21lcre235vtolojh4g403ep.apps.googleusercontent.com"
+	antigravityClientSecret     = "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"
+	defaultAntigravityAgent     = "antigravity/1.11.5 windows/amd64"
+	antigravityAuthType         = "antigravity"
+	refreshSkew                 = 3000 * time.Second
+	streamScannerBuffer     int = 20_971_520
 )
 
 var randSource = rand.New(rand.NewSource(time.Now().UnixNano()))
@@ -77,6 +77,8 @@ func (e *AntigravityExecutor) Execute(ctx context.Context, auth *cliproxyauth.Au
 	translated := sdktranslator.TranslateRequest(from, to, req.Model, bytes.Clone(req.Payload), false)
 
 	translated = applyThinkingMetadataCLI(translated, req.Metadata, req.Model)
+	translated = util.ApplyDefaultThinkingIfNeededCLI(req.Model, translated)
+	translated = normalizeAntigravityThinking(req.Model, translated)
 
 	baseURLs := antigravityBaseURLFallbackOrder(auth)
 	httpClient := newProxyAwareHTTPClient(ctx, e.cfg, auth, 0)
@@ -170,6 +172,8 @@ func (e *AntigravityExecutor) ExecuteStream(ctx context.Context, auth *cliproxya
 	translated := sdktranslator.TranslateRequest(from, to, req.Model, bytes.Clone(req.Payload), true)
 
 	translated = applyThinkingMetadataCLI(translated, req.Metadata, req.Model)
+	translated = util.ApplyDefaultThinkingIfNeededCLI(req.Model, translated)
+	translated = normalizeAntigravityThinking(req.Model, translated)
 
 	baseURLs := antigravityBaseURLFallbackOrder(auth)
 	httpClient := newProxyAwareHTTPClient(ctx, e.cfg, auth, 0)
@@ -366,28 +370,34 @@ func FetchAntigravityModels(ctx context.Context, auth *cliproxyauth.Auth, cfg *c
 		}
 
 		now := time.Now().Unix()
+		modelConfig := registry.GetAntigravityModelConfig()
 		models := make([]*registry.ModelInfo, 0, len(result.Map()))
-		for id := range result.Map() {
-			id = modelName2Alias(id)
-			if id != "" {
+		for originalName := range result.Map() {
+			aliasName := modelName2Alias(originalName)
+			if aliasName != "" {
+				cfg := modelConfig[aliasName]
+				modelName := aliasName
+				if cfg != nil && cfg.Name != "" {
+					modelName = cfg.Name
+				}
 				modelInfo := &registry.ModelInfo{
-					ID:          id,
-					Name:        id,
-					Description: id,
-					DisplayName: id,
-					Version:     id,
+					ID:          aliasName,
+					Name:        modelName,
+					Description: aliasName,
+					DisplayName: aliasName,
+					Version:     aliasName,
 					Object:      "model",
 					Created:     now,
 					OwnedBy:     antigravityAuthType,
 					Type:        antigravityAuthType,
 				}
-				// Add Thinking support for thinking models
-				if strings.HasSuffix(id, "-thinking") || strings.Contains(id, "-thinking-") {
-					modelInfo.Thinking = &registry.ThinkingSupport{
-						Min:            1024,
-						Max:            100000,
-						ZeroAllowed:    false,
-						DynamicAllowed: true,
+				// Look up Thinking support from static config using alias name
+				if cfg != nil {
+					if cfg.Thinking != nil {
+						modelInfo.Thinking = cfg.Thinking
+					}
+					if cfg.MaxCompletionTokens > 0 {
+						modelInfo.MaxCompletionTokens = cfg.MaxCompletionTokens
 					}
 				}
 				models = append(models, modelInfo)
@@ -533,6 +543,9 @@ func (e *AntigravityExecutor) buildRequest(ctx context.Context, auth *cliproxyau
 		strJSON = util.DeleteKey(strJSON, "minLength")
 		strJSON = util.DeleteKey(strJSON, "maxLength")
 		strJSON = util.DeleteKey(strJSON, "exclusiveMinimum")
+		strJSON = util.DeleteKey(strJSON, "exclusiveMaximum")
+		strJSON = util.DeleteKey(strJSON, "$ref")
+		strJSON = util.DeleteKey(strJSON, "$defs")
 
 		paths = make([]string, 0)
 		util.Walk(gjson.Parse(strJSON), "", "anyOf", &paths)
@@ -648,7 +661,7 @@ func buildBaseURL(auth *cliproxyauth.Auth) string {
 	if baseURLs := antigravityBaseURLFallbackOrder(auth); len(baseURLs) > 0 {
 		return baseURLs[0]
 	}
-	return antigravityBaseURLAutopush
+	return antigravityBaseURLDaily
 }
 
 func resolveHost(base string) string {
@@ -684,7 +697,7 @@ func antigravityBaseURLFallbackOrder(auth *cliproxyauth.Auth) []string {
 	}
 	return []string{
 		antigravityBaseURLDaily,
-		antigravityBaseURLAutopush,
+		// antigravityBaseURLAutopush,
 		antigravityBaseURLProd,
 	}
 }
@@ -808,3 +821,65 @@ func alias2ModelName(modelName string) string {
 		return modelName
 	}
 }
+
+// normalizeAntigravityThinking clamps or removes thinking config based on model support.
+// For Claude models, it additionally ensures thinking budget < max_tokens.
+func normalizeAntigravityThinking(model string, payload []byte) []byte {
+	payload = util.StripThinkingConfigIfUnsupported(model, payload)
+	if !util.ModelSupportsThinking(model) {
+		return payload
+	}
+	budget := gjson.GetBytes(payload, "request.generationConfig.thinkingConfig.thinkingBudget")
+	if !budget.Exists() {
+		return payload
+	}
+	raw := int(budget.Int())
+	normalized := util.NormalizeThinkingBudget(model, raw)
+
+	isClaude := strings.Contains(strings.ToLower(model), "claude")
+	if isClaude {
+		effectiveMax, setDefaultMax := antigravityEffectiveMaxTokens(model, payload)
+		if effectiveMax > 0 && normalized >= effectiveMax {
+			normalized = effectiveMax - 1
+		}
+		minBudget := antigravityMinThinkingBudget(model)
+		if minBudget > 0 && normalized >= 0 && normalized < minBudget {
+			// Budget is below minimum, remove thinking config entirely
+			payload, _ = sjson.DeleteBytes(payload, "request.generationConfig.thinkingConfig")
+			return payload
+		}
+		if setDefaultMax {
+			if res, errSet := sjson.SetBytes(payload, "request.generationConfig.maxOutputTokens", effectiveMax); errSet == nil {
+				payload = res
+			}
+		}
+	}
+
+	updated, err := sjson.SetBytes(payload, "request.generationConfig.thinkingConfig.thinkingBudget", normalized)
+	if err != nil {
+		return payload
+	}
+	return updated
+}
+
+// antigravityEffectiveMaxTokens returns the max tokens to cap thinking:
+// prefer request-provided maxOutputTokens; otherwise fall back to model default.
+// The boolean indicates whether the value came from the model default (and thus should be written back).
+func antigravityEffectiveMaxTokens(model string, payload []byte) (max int, fromModel bool) {
+	if maxTok := gjson.GetBytes(payload, "request.generationConfig.maxOutputTokens"); maxTok.Exists() && maxTok.Int() > 0 {
+		return int(maxTok.Int()), false
+	}
+	if modelInfo := registry.GetGlobalRegistry().GetModelInfo(model); modelInfo != nil && modelInfo.MaxCompletionTokens > 0 {
+		return modelInfo.MaxCompletionTokens, true
+	}
+	return 0, false
+}
+
+// antigravityMinThinkingBudget returns the minimum thinking budget for a model.
+// Falls back to -1 if no model info is found.
+func antigravityMinThinkingBudget(model string) int {
+	if modelInfo := registry.GetGlobalRegistry().GetModelInfo(model); modelInfo != nil && modelInfo.Thinking != nil {
+		return modelInfo.Thinking.Min
+	}
+	return -1
+}

internal/runtime/executor/gemini_cli_executor.go

@@ -64,6 +64,8 @@ func (e *GeminiCLIExecutor) Execute(ctx context.Context, auth *cliproxyauth.Auth
 	to := sdktranslator.FromString("gemini-cli")
 	basePayload := sdktranslator.TranslateRequest(from, to, req.Model, bytes.Clone(req.Payload), false)
 	basePayload = applyThinkingMetadataCLI(basePayload, req.Metadata, req.Model)
+	basePayload = util.ApplyDefaultThinkingIfNeededCLI(req.Model, basePayload)
+	basePayload = util.NormalizeGeminiCLIThinkingBudget(req.Model, basePayload)
 	basePayload = util.StripThinkingConfigIfUnsupported(req.Model, basePayload)
 	basePayload = fixGeminiCLIImageAspectRatio(req.Model, basePayload)
 	basePayload = applyPayloadConfigWithRoot(e.cfg, req.Model, "gemini", "request", basePayload)
@@ -199,6 +201,8 @@ func (e *GeminiCLIExecutor) ExecuteStream(ctx context.Context, auth *cliproxyaut
 	to := sdktranslator.FromString("gemini-cli")
 	basePayload := sdktranslator.TranslateRequest(from, to, req.Model, bytes.Clone(req.Payload), true)
 	basePayload = applyThinkingMetadataCLI(basePayload, req.Metadata, req.Model)
+	basePayload = util.ApplyDefaultThinkingIfNeededCLI(req.Model, basePayload)
+	basePayload = util.NormalizeGeminiCLIThinkingBudget(req.Model, basePayload)
 	basePayload = util.StripThinkingConfigIfUnsupported(req.Model, basePayload)
 	basePayload = fixGeminiCLIImageAspectRatio(req.Model, basePayload)
 	basePayload = applyPayloadConfigWithRoot(e.cfg, req.Model, "gemini", "request", basePayload)

internal/runtime/executor/gemini_executor.go

@@ -80,6 +80,8 @@ func (e *GeminiExecutor) Execute(ctx context.Context, auth *cliproxyauth.Auth, r
 	to := sdktranslator.FromString("gemini")
 	body := sdktranslator.TranslateRequest(from, to, req.Model, bytes.Clone(req.Payload), false)
 	body = applyThinkingMetadata(body, req.Metadata, req.Model)
+	body = util.ApplyDefaultThinkingIfNeeded(req.Model, body)
+	body = util.NormalizeGeminiThinkingBudget(req.Model, body)
 	body = util.StripThinkingConfigIfUnsupported(req.Model, body)
 	body = fixGeminiImageAspectRatio(req.Model, body)
 	body = applyPayloadConfig(e.cfg, req.Model, body)
@@ -169,6 +171,8 @@ func (e *GeminiExecutor) ExecuteStream(ctx context.Context, auth *cliproxyauth.A
 	to := sdktranslator.FromString("gemini")
 	body := sdktranslator.TranslateRequest(from, to, req.Model, bytes.Clone(req.Payload), true)
 	body = applyThinkingMetadata(body, req.Metadata, req.Model)
+	body = util.ApplyDefaultThinkingIfNeeded(req.Model, body)
+	body = util.NormalizeGeminiThinkingBudget(req.Model, body)
 	body = util.StripThinkingConfigIfUnsupported(req.Model, body)
 	body = fixGeminiImageAspectRatio(req.Model, body)
 	body = applyPayloadConfig(e.cfg, req.Model, body)

internal/runtime/executor/gemini_vertex_executor.go

@@ -296,6 +296,8 @@ func (e *GeminiVertexExecutor) executeWithServiceAccount(ctx context.Context, au
 		}
 		body = util.ApplyGeminiThinkingConfig(body, budgetOverride, includeOverride)
 	}
+	body = util.ApplyDefaultThinkingIfNeeded(req.Model, body)
+	body = util.NormalizeGeminiThinkingBudget(req.Model, body)
 	body = util.StripThinkingConfigIfUnsupported(req.Model, body)
 	body = fixGeminiImageAspectRatio(req.Model, body)
 	body = applyPayloadConfig(e.cfg, req.Model, body)
@@ -391,6 +393,8 @@ func (e *GeminiVertexExecutor) executeWithAPIKey(ctx context.Context, auth *clip
 		}
 		body = util.ApplyGeminiThinkingConfig(body, budgetOverride, includeOverride)
 	}
+	body = util.ApplyDefaultThinkingIfNeeded(req.Model, body)
+	body = util.NormalizeGeminiThinkingBudget(req.Model, body)
 	body = util.StripThinkingConfigIfUnsupported(req.Model, body)
 	body = fixGeminiImageAspectRatio(req.Model, body)
 	body = applyPayloadConfig(e.cfg, req.Model, body)
@@ -487,6 +491,8 @@ func (e *GeminiVertexExecutor) executeStreamWithServiceAccount(ctx context.Conte
 		}
 		body = util.ApplyGeminiThinkingConfig(body, budgetOverride, includeOverride)
 	}
+	body = util.ApplyDefaultThinkingIfNeeded(req.Model, body)
+	body = util.NormalizeGeminiThinkingBudget(req.Model, body)
 	body = util.StripThinkingConfigIfUnsupported(req.Model, body)
 	body = fixGeminiImageAspectRatio(req.Model, body)
 	body = applyPayloadConfig(e.cfg, req.Model, body)
@@ -599,6 +605,8 @@ func (e *GeminiVertexExecutor) executeStreamWithAPIKey(ctx context.Context, auth
 		}
 		body = util.ApplyGeminiThinkingConfig(body, budgetOverride, includeOverride)
 	}
+	body = util.ApplyDefaultThinkingIfNeeded(req.Model, body)
+	body = util.NormalizeGeminiThinkingBudget(req.Model, body)
 	body = util.StripThinkingConfigIfUnsupported(req.Model, body)
 	body = fixGeminiImageAspectRatio(req.Model, body)
 	body = applyPayloadConfig(e.cfg, req.Model, body)

internal/translator/antigravity/claude/antigravity_claude_request.go

@@ -180,7 +180,6 @@ func ConvertClaudeRequestToAntigravity(modelName string, inputRawJSON []byte, _
 		if t.Get("type").String() == "enabled" {
 			if b := t.Get("budget_tokens"); b.Exists() && b.Type == gjson.Number {
 				budget := int(b.Int())
-				budget = util.NormalizeThinkingBudget(modelName, budget)
 				out, _ = sjson.Set(out, "request.generationConfig.thinkingConfig.thinkingBudget", budget)
 				out, _ = sjson.Set(out, "request.generationConfig.thinkingConfig.include_thoughts", true)
 			}

internal/translator/antigravity/claude/antigravity_claude_response.go

@@ -12,6 +12,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"strings"
+	"sync/atomic"
 	"time"
 
 	"github.com/tidwall/gjson"
@@ -36,6 +37,9 @@ type Params struct {
 	HasToolUse           bool   // Indicates if tool use was observed in the stream
 }
 
+// toolUseIDCounter provides a process-wide unique counter for tool use identifiers.
+var toolUseIDCounter uint64
+
 // ConvertAntigravityResponseToClaude performs sophisticated streaming response format conversion.
 // This function implements a complex state machine that translates backend client responses
 // into Claude Code-compatible Server-Sent Events (SSE) format. It manages different response types
@@ -216,7 +220,7 @@ func ConvertAntigravityResponseToClaude(_ context.Context, _ string, originalReq
 
 				// Create the tool use block with unique ID and function details
 				data := fmt.Sprintf(`{"type":"content_block_start","index":%d,"content_block":{"type":"tool_use","id":"","name":"","input":{}}}`, params.ResponseIndex)
-				data, _ = sjson.Set(data, "content_block.id", fmt.Sprintf("%s-%d", fcName, time.Now().UnixNano()))
+				data, _ = sjson.Set(data, "content_block.id", fmt.Sprintf("%s-%d-%d", fcName, time.Now().UnixNano(), atomic.AddUint64(&toolUseIDCounter, 1)))
 				data, _ = sjson.Set(data, "content_block.name", fcName)
 				output = output + fmt.Sprintf("data: %s\n\n\n", data)
 

internal/translator/antigravity/openai/chat-completions/antigravity_openai_request.go

@@ -48,13 +48,13 @@ func ConvertOpenAIRequestToAntigravity(modelName string, inputRawJSON []byte, _
 			out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", -1)
 			out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.include_thoughts", true)
 		case "low":
-			out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", util.NormalizeThinkingBudget(modelName, 1024))
+			out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", 1024)
 			out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.include_thoughts", true)
 		case "medium":
-			out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", util.NormalizeThinkingBudget(modelName, 8192))
+			out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", 8192)
 			out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.include_thoughts", true)
 		case "high":
-			out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", util.NormalizeThinkingBudget(modelName, 32768))
+			out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", 32768)
 			out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.include_thoughts", true)
 		default:
 			out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", -1)
@@ -66,15 +66,15 @@ func ConvertOpenAIRequestToAntigravity(modelName string, inputRawJSON []byte, _
 	if !hasOfficialThinking && util.ModelSupportsThinking(modelName) {
 		if tc := gjson.GetBytes(rawJSON, "extra_body.google.thinking_config"); tc.Exists() && tc.IsObject() {
 			var setBudget bool
-			var normalized int
+			var budget int
 
 			if v := tc.Get("thinkingBudget"); v.Exists() {
-				normalized = util.NormalizeThinkingBudget(modelName, int(v.Int()))
-				out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", normalized)
+				budget = int(v.Int())
+				out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", budget)
 				setBudget = true
 			} else if v := tc.Get("thinking_budget"); v.Exists() {
-				normalized = util.NormalizeThinkingBudget(modelName, int(v.Int()))
-				out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", normalized)
+				budget = int(v.Int())
+				out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", budget)
 				setBudget = true
 			}
 
@@ -82,22 +82,27 @@ func ConvertOpenAIRequestToAntigravity(modelName string, inputRawJSON []byte, _
 				out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.include_thoughts", v.Bool())
 			} else if v := tc.Get("include_thoughts"); v.Exists() {
 				out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.include_thoughts", v.Bool())
-			} else if setBudget && normalized != 0 {
+			} else if setBudget && budget != 0 {
 				out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.include_thoughts", true)
 			}
 		}
 	}
 
-	// For gemini-3-pro-preview, always send default thinkingConfig when none specified.
-	// This matches the official Gemini CLI behavior which always sends:
-	// { thinkingBudget: -1, includeThoughts: true }
-	// See: ai-gemini-cli/packages/core/src/config/defaultModelConfigs.ts
-	if !gjson.GetBytes(out, "request.generationConfig.thinkingConfig").Exists() && modelName == "gemini-3-pro-preview" {
-		out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", -1)
-		out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.include_thoughts", true)
+	// Claude/Anthropic API format: thinking.type == "enabled" with budget_tokens
+	// This allows Claude Code and other Claude API clients to pass thinking configuration
+	if !gjson.GetBytes(out, "request.generationConfig.thinkingConfig").Exists() && util.ModelSupportsThinking(modelName) {
+		if t := gjson.GetBytes(rawJSON, "thinking"); t.Exists() && t.IsObject() {
+			if t.Get("type").String() == "enabled" {
+				if b := t.Get("budget_tokens"); b.Exists() && b.Type == gjson.Number {
+					budget := int(b.Int())
+					out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", budget)
+					out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.include_thoughts", true)
+				}
+			}
+		}
 	}
 
-	// Temperature/top_p/top_k
+	// Temperature/top_p/top_k/max_tokens
 	if tr := gjson.GetBytes(rawJSON, "temperature"); tr.Exists() && tr.Type == gjson.Number {
 		out, _ = sjson.SetBytes(out, "request.generationConfig.temperature", tr.Num)
 	}
@@ -107,6 +112,9 @@ func ConvertOpenAIRequestToAntigravity(modelName string, inputRawJSON []byte, _
 	if tkr := gjson.GetBytes(rawJSON, "top_k"); tkr.Exists() && tkr.Type == gjson.Number {
 		out, _ = sjson.SetBytes(out, "request.generationConfig.topK", tkr.Num)
 	}
+	if maxTok := gjson.GetBytes(rawJSON, "max_tokens"); maxTok.Exists() && maxTok.Type == gjson.Number {
+		out, _ = sjson.SetBytes(out, "request.generationConfig.maxOutputTokens", maxTok.Num)
+	}
 
 	// Map OpenAI modalities -> Gemini CLI request.generationConfig.responseModalities
 	// e.g. "modalities": ["image", "text"] -> ["IMAGE", "TEXT"]

internal/translator/antigravity/openai/chat-completions/antigravity_openai_response.go

@@ -11,6 +11,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"strings"
+	"sync/atomic"
 	"time"
 
 	. "github.com/router-for-me/CLIProxyAPI/v6/internal/translator/gemini/openai/chat-completions"
@@ -24,6 +25,9 @@ type convertCliResponseToOpenAIChatParams struct {
 	FunctionIndex int
 }
 
+// functionCallIDCounter provides a process-wide unique counter for function call identifiers.
+var functionCallIDCounter uint64
+
 // ConvertAntigravityResponseToOpenAI translates a single chunk of a streaming response from the
 // Gemini CLI API format to the OpenAI Chat Completions streaming format.
 // It processes various Gemini CLI event types and transforms them into OpenAI-compatible JSON responses.
@@ -146,7 +150,7 @@ func ConvertAntigravityResponseToOpenAI(_ context.Context, _ string, originalReq
 
 				functionCallTemplate := `{"id": "","index": 0,"type": "function","function": {"name": "","arguments": ""}}`
 				fcName := functionCallResult.Get("name").String()
-				functionCallTemplate, _ = sjson.Set(functionCallTemplate, "id", fmt.Sprintf("%s-%d", fcName, time.Now().UnixNano()))
+				functionCallTemplate, _ = sjson.Set(functionCallTemplate, "id", fmt.Sprintf("%s-%d-%d", fcName, time.Now().UnixNano(), atomic.AddUint64(&functionCallIDCounter, 1)))
 				functionCallTemplate, _ = sjson.Set(functionCallTemplate, "index", functionCallIndex)
 				functionCallTemplate, _ = sjson.Set(functionCallTemplate, "function.name", fcName)
 				if fcArgsResult := functionCallResult.Get("args"); fcArgsResult.Exists() {

internal/translator/gemini-cli/claude/gemini-cli_claude_request.go

@@ -165,7 +165,6 @@ func ConvertClaudeRequestToCLI(modelName string, inputRawJSON []byte, _ bool) []
 		if t.Get("type").String() == "enabled" {
 			if b := t.Get("budget_tokens"); b.Exists() && b.Type == gjson.Number {
 				budget := int(b.Int())
-				budget = util.NormalizeThinkingBudget(modelName, budget)
 				out, _ = sjson.Set(out, "request.generationConfig.thinkingConfig.thinkingBudget", budget)
 				out, _ = sjson.Set(out, "request.generationConfig.thinkingConfig.include_thoughts", true)
 			}

internal/translator/gemini-cli/claude/gemini-cli_claude_response.go

@@ -12,6 +12,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"strings"
+	"sync/atomic"
 	"time"
 
 	"github.com/tidwall/gjson"
@@ -27,6 +28,9 @@ type Params struct {
 	ResponseIndex    int  // Index counter for content blocks in the streaming response
 }
 
+// toolUseIDCounter provides a process-wide unique counter for tool use identifiers.
+var toolUseIDCounter uint64
+
 // ConvertGeminiCLIResponseToClaude performs sophisticated streaming response format conversion.
 // This function implements a complex state machine that translates backend client responses
 // into Claude Code-compatible Server-Sent Events (SSE) format. It manages different response types
@@ -197,7 +201,7 @@ func ConvertGeminiCLIResponseToClaude(_ context.Context, _ string, originalReque
 
 				// Create the tool use block with unique ID and function details
 				data := fmt.Sprintf(`{"type":"content_block_start","index":%d,"content_block":{"type":"tool_use","id":"","name":"","input":{}}}`, (*param).(*Params).ResponseIndex)
-				data, _ = sjson.Set(data, "content_block.id", fmt.Sprintf("%s-%d", fcName, time.Now().UnixNano()))
+				data, _ = sjson.Set(data, "content_block.id", fmt.Sprintf("%s-%d-%d", fcName, time.Now().UnixNano(), atomic.AddUint64(&toolUseIDCounter, 1)))
 				data, _ = sjson.Set(data, "content_block.name", fcName)
 				output = output + fmt.Sprintf("data: %s\n\n\n", data)
 

internal/translator/gemini-cli/openai/chat-completions/gemini-cli_openai_request.go

@@ -48,13 +48,13 @@ func ConvertOpenAIRequestToGeminiCLI(modelName string, inputRawJSON []byte, _ bo
 			out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", -1)
 			out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.include_thoughts", true)
 		case "low":
-			out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", util.NormalizeThinkingBudget(modelName, 1024))
+			out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", 1024)
 			out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.include_thoughts", true)
 		case "medium":
-			out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", util.NormalizeThinkingBudget(modelName, 8192))
+			out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", 8192)
 			out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.include_thoughts", true)
 		case "high":
-			out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", util.NormalizeThinkingBudget(modelName, 32768))
+			out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", 32768)
 			out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.include_thoughts", true)
 		default:
 			out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", -1)
@@ -66,15 +66,15 @@ func ConvertOpenAIRequestToGeminiCLI(modelName string, inputRawJSON []byte, _ bo
 	if !hasOfficialThinking && util.ModelSupportsThinking(modelName) {
 		if tc := gjson.GetBytes(rawJSON, "extra_body.google.thinking_config"); tc.Exists() && tc.IsObject() {
 			var setBudget bool
-			var normalized int
+			var budget int
 
 			if v := tc.Get("thinkingBudget"); v.Exists() {
-				normalized = util.NormalizeThinkingBudget(modelName, int(v.Int()))
-				out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", normalized)
+				budget = int(v.Int())
+				out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", budget)
 				setBudget = true
 			} else if v := tc.Get("thinking_budget"); v.Exists() {
-				normalized = util.NormalizeThinkingBudget(modelName, int(v.Int()))
-				out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", normalized)
+				budget = int(v.Int())
+				out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", budget)
 				setBudget = true
 			}
 
@@ -82,21 +82,12 @@ func ConvertOpenAIRequestToGeminiCLI(modelName string, inputRawJSON []byte, _ bo
 				out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.include_thoughts", v.Bool())
 			} else if v := tc.Get("include_thoughts"); v.Exists() {
 				out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.include_thoughts", v.Bool())
-			} else if setBudget && normalized != 0 {
+			} else if setBudget && budget != 0 {
 				out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.include_thoughts", true)
 			}
 		}
 	}
 
-	// For gemini-3-pro-preview, always send default thinkingConfig when none specified.
-	// This matches the official Gemini CLI behavior which always sends:
-	// { thinkingBudget: -1, includeThoughts: true }
-	// See: ai-gemini-cli/packages/core/src/config/defaultModelConfigs.ts
-	if !gjson.GetBytes(out, "request.generationConfig.thinkingConfig").Exists() && modelName == "gemini-3-pro-preview" {
-		out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.thinkingBudget", -1)
-		out, _ = sjson.SetBytes(out, "request.generationConfig.thinkingConfig.include_thoughts", true)
-	}
-
 	// Temperature/top_p/top_k
 	if tr := gjson.GetBytes(rawJSON, "temperature"); tr.Exists() && tr.Type == gjson.Number {
 		out, _ = sjson.SetBytes(out, "request.generationConfig.temperature", tr.Num)

internal/translator/gemini-cli/openai/chat-completions/gemini-cli_openai_response.go

@@ -11,6 +11,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"strings"
+	"sync/atomic"
 	"time"
 
 	. "github.com/router-for-me/CLIProxyAPI/v6/internal/translator/gemini/openai/chat-completions"
@@ -24,6 +25,9 @@ type convertCliResponseToOpenAIChatParams struct {
 	FunctionIndex int
 }
 
+// functionCallIDCounter provides a process-wide unique counter for function call identifiers.
+var functionCallIDCounter uint64
+
 // ConvertCliResponseToOpenAI translates a single chunk of a streaming response from the
 // Gemini CLI API format to the OpenAI Chat Completions streaming format.
 // It processes various Gemini CLI event types and transforms them into OpenAI-compatible JSON responses.
@@ -146,7 +150,7 @@ func ConvertCliResponseToOpenAI(_ context.Context, _ string, originalRequestRawJ
 
 				functionCallTemplate := `{"id": "","index": 0,"type": "function","function": {"name": "","arguments": ""}}`
 				fcName := functionCallResult.Get("name").String()
-				functionCallTemplate, _ = sjson.Set(functionCallTemplate, "id", fmt.Sprintf("%s-%d", fcName, time.Now().UnixNano()))
+				functionCallTemplate, _ = sjson.Set(functionCallTemplate, "id", fmt.Sprintf("%s-%d-%d", fcName, time.Now().UnixNano(), atomic.AddUint64(&functionCallIDCounter, 1)))
 				functionCallTemplate, _ = sjson.Set(functionCallTemplate, "index", functionCallIndex)
 				functionCallTemplate, _ = sjson.Set(functionCallTemplate, "function.name", fcName)
 				if fcArgsResult := functionCallResult.Get("args"); fcArgsResult.Exists() {

internal/translator/gemini/claude/gemini_claude_request.go

@@ -158,7 +158,6 @@ func ConvertClaudeRequestToGemini(modelName string, inputRawJSON []byte, _ bool)
 		if t.Get("type").String() == "enabled" {
 			if b := t.Get("budget_tokens"); b.Exists() && b.Type == gjson.Number {
 				budget := int(b.Int())
-				budget = util.NormalizeThinkingBudget(modelName, budget)
 				out, _ = sjson.Set(out, "generationConfig.thinkingConfig.thinkingBudget", budget)
 				out, _ = sjson.Set(out, "generationConfig.thinkingConfig.include_thoughts", true)
 			}

internal/translator/gemini/claude/gemini_claude_response.go

@@ -12,6 +12,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"strings"
+	"sync/atomic"
 	"time"
 
 	"github.com/tidwall/gjson"
@@ -26,6 +27,9 @@ type Params struct {
 	ResponseIndex    int
 }
 
+// toolUseIDCounter provides a process-wide unique counter for tool use identifiers.
+var toolUseIDCounter uint64
+
 // ConvertGeminiResponseToClaude performs sophisticated streaming response format conversion.
 // This function implements a complex state machine that translates backend client responses
 // into Claude-compatible Server-Sent Events (SSE) format. It manages different response types
@@ -197,7 +201,7 @@ func ConvertGeminiResponseToClaude(_ context.Context, _ string, originalRequestR
 
 				// Create the tool use block with unique ID and function details
 				data := fmt.Sprintf(`{"type":"content_block_start","index":%d,"content_block":{"type":"tool_use","id":"","name":"","input":{}}}`, (*param).(*Params).ResponseIndex)
-				data, _ = sjson.Set(data, "content_block.id", fmt.Sprintf("%s-%d", fcName, time.Now().UnixNano()))
+				data, _ = sjson.Set(data, "content_block.id", fmt.Sprintf("%s-%d-%d", fcName, time.Now().UnixNano(), atomic.AddUint64(&toolUseIDCounter, 1)))
 				data, _ = sjson.Set(data, "content_block.name", fcName)
 				output = output + fmt.Sprintf("data: %s\n\n\n", data)
 

internal/translator/gemini/openai/chat-completions/gemini_openai_request.go

@@ -48,13 +48,13 @@ func ConvertOpenAIRequestToGemini(modelName string, inputRawJSON []byte, _ bool)
 			out, _ = sjson.SetBytes(out, "generationConfig.thinkingConfig.thinkingBudget", -1)
 			out, _ = sjson.SetBytes(out, "generationConfig.thinkingConfig.include_thoughts", true)
 		case "low":
-			out, _ = sjson.SetBytes(out, "generationConfig.thinkingConfig.thinkingBudget", util.NormalizeThinkingBudget(modelName, 1024))
+			out, _ = sjson.SetBytes(out, "generationConfig.thinkingConfig.thinkingBudget", 1024)
 			out, _ = sjson.SetBytes(out, "generationConfig.thinkingConfig.include_thoughts", true)
 		case "medium":
-			out, _ = sjson.SetBytes(out, "generationConfig.thinkingConfig.thinkingBudget", util.NormalizeThinkingBudget(modelName, 8192))
+			out, _ = sjson.SetBytes(out, "generationConfig.thinkingConfig.thinkingBudget", 8192)
 			out, _ = sjson.SetBytes(out, "generationConfig.thinkingConfig.include_thoughts", true)
 		case "high":
-			out, _ = sjson.SetBytes(out, "generationConfig.thinkingConfig.thinkingBudget", util.NormalizeThinkingBudget(modelName, 32768))
+			out, _ = sjson.SetBytes(out, "generationConfig.thinkingConfig.thinkingBudget", 32768)
 			out, _ = sjson.SetBytes(out, "generationConfig.thinkingConfig.include_thoughts", true)
 		default:
 			out, _ = sjson.SetBytes(out, "generationConfig.thinkingConfig.thinkingBudget", -1)
@@ -66,15 +66,15 @@ func ConvertOpenAIRequestToGemini(modelName string, inputRawJSON []byte, _ bool)
 	if !hasOfficialThinking && util.ModelSupportsThinking(modelName) {
 		if tc := gjson.GetBytes(rawJSON, "extra_body.google.thinking_config"); tc.Exists() && tc.IsObject() {
 			var setBudget bool
-			var normalized int
+			var budget int
 
 			if v := tc.Get("thinkingBudget"); v.Exists() {
-				normalized = util.NormalizeThinkingBudget(modelName, int(v.Int()))
-				out, _ = sjson.SetBytes(out, "generationConfig.thinkingConfig.thinkingBudget", normalized)
+				budget = int(v.Int())
+				out, _ = sjson.SetBytes(out, "generationConfig.thinkingConfig.thinkingBudget", budget)
 				setBudget = true
 			} else if v := tc.Get("thinking_budget"); v.Exists() {
-				normalized = util.NormalizeThinkingBudget(modelName, int(v.Int()))
-				out, _ = sjson.SetBytes(out, "generationConfig.thinkingConfig.thinkingBudget", normalized)
+				budget = int(v.Int())
+				out, _ = sjson.SetBytes(out, "generationConfig.thinkingConfig.thinkingBudget", budget)
 				setBudget = true
 			}
 
@@ -82,7 +82,7 @@ func ConvertOpenAIRequestToGemini(modelName string, inputRawJSON []byte, _ bool)
 				out, _ = sjson.SetBytes(out, "generationConfig.thinkingConfig.include_thoughts", v.Bool())
 			} else if v := tc.Get("include_thoughts"); v.Exists() {
 				out, _ = sjson.SetBytes(out, "generationConfig.thinkingConfig.include_thoughts", v.Bool())
-			} else if setBudget && normalized != 0 {
+			} else if setBudget && budget != 0 {
 				out, _ = sjson.SetBytes(out, "generationConfig.thinkingConfig.include_thoughts", true)
 			}
 		}

internal/translator/gemini/openai/chat-completions/gemini_openai_response.go

@@ -11,6 +11,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"strings"
+	"sync/atomic"
 	"time"
 
 	"github.com/tidwall/gjson"
@@ -23,6 +24,9 @@ type convertGeminiResponseToOpenAIChatParams struct {
 	FunctionIndex int
 }
 
+// functionCallIDCounter provides a process-wide unique counter for function call identifiers.
+var functionCallIDCounter uint64
+
 // ConvertGeminiResponseToOpenAI translates a single chunk of a streaming response from the
 // Gemini API format to the OpenAI Chat Completions streaming format.
 // It processes various Gemini event types and transforms them into OpenAI-compatible JSON responses.
@@ -148,7 +152,7 @@ func ConvertGeminiResponseToOpenAI(_ context.Context, _ string, originalRequestR
 
 				functionCallTemplate := `{"id": "","index": 0,"type": "function","function": {"name": "","arguments": ""}}`
 				fcName := functionCallResult.Get("name").String()
-				functionCallTemplate, _ = sjson.Set(functionCallTemplate, "id", fmt.Sprintf("%s-%d", fcName, time.Now().UnixNano()))
+				functionCallTemplate, _ = sjson.Set(functionCallTemplate, "id", fmt.Sprintf("%s-%d-%d", fcName, time.Now().UnixNano(), atomic.AddUint64(&functionCallIDCounter, 1)))
 				functionCallTemplate, _ = sjson.Set(functionCallTemplate, "index", functionCallIndex)
 				functionCallTemplate, _ = sjson.Set(functionCallTemplate, "function.name", fcName)
 				if fcArgsResult := functionCallResult.Get("args"); fcArgsResult.Exists() {
@@ -281,7 +285,7 @@ func ConvertGeminiResponseToOpenAINonStream(_ context.Context, _ string, origina
 				}
 				functionCallItemTemplate := `{"id": "","type": "function","function": {"name": "","arguments": ""}}`
 				fcName := functionCallResult.Get("name").String()
-				functionCallItemTemplate, _ = sjson.Set(functionCallItemTemplate, "id", fmt.Sprintf("%s-%d", fcName, time.Now().UnixNano()))
+				functionCallItemTemplate, _ = sjson.Set(functionCallItemTemplate, "id", fmt.Sprintf("%s-%d-%d", fcName, time.Now().UnixNano(), atomic.AddUint64(&functionCallIDCounter, 1)))
 				functionCallItemTemplate, _ = sjson.Set(functionCallItemTemplate, "function.name", fcName)
 				if fcArgsResult := functionCallResult.Get("args"); fcArgsResult.Exists() {
 					functionCallItemTemplate, _ = sjson.Set(functionCallItemTemplate, "function.arguments", fcArgsResult.Raw)

internal/translator/gemini/openai/responses/gemini_openai-responses_request.go

@@ -400,16 +400,16 @@ func ConvertOpenAIResponsesRequestToGemini(modelName string, inputRawJSON []byte
 			out, _ = sjson.Set(out, "generationConfig.thinkingConfig.thinkingBudget", -1)
 			out, _ = sjson.Set(out, "generationConfig.thinkingConfig.include_thoughts", true)
 		case "minimal":
-			out, _ = sjson.Set(out, "generationConfig.thinkingConfig.thinkingBudget", util.NormalizeThinkingBudget(modelName, 1024))
+			out, _ = sjson.Set(out, "generationConfig.thinkingConfig.thinkingBudget", 1024)
 			out, _ = sjson.Set(out, "generationConfig.thinkingConfig.include_thoughts", true)
 		case "low":
-			out, _ = sjson.Set(out, "generationConfig.thinkingConfig.thinkingBudget", util.NormalizeThinkingBudget(modelName, 4096))
+			out, _ = sjson.Set(out, "generationConfig.thinkingConfig.thinkingBudget", 4096)
 			out, _ = sjson.Set(out, "generationConfig.thinkingConfig.include_thoughts", true)
 		case "medium":
-			out, _ = sjson.Set(out, "generationConfig.thinkingConfig.thinkingBudget", util.NormalizeThinkingBudget(modelName, 8192))
+			out, _ = sjson.Set(out, "generationConfig.thinkingConfig.thinkingBudget", 8192)
 			out, _ = sjson.Set(out, "generationConfig.thinkingConfig.include_thoughts", true)
 		case "high":
-			out, _ = sjson.Set(out, "generationConfig.thinkingConfig.thinkingBudget", util.NormalizeThinkingBudget(modelName, 32768))
+			out, _ = sjson.Set(out, "generationConfig.thinkingConfig.thinkingBudget", 32768)
 			out, _ = sjson.Set(out, "generationConfig.thinkingConfig.include_thoughts", true)
 		default:
 			out, _ = sjson.Set(out, "generationConfig.thinkingConfig.thinkingBudget", -1)
@@ -421,32 +421,22 @@ func ConvertOpenAIResponsesRequestToGemini(modelName string, inputRawJSON []byte
 	if !hasOfficialThinking && util.ModelSupportsThinking(modelName) {
 		if tc := root.Get("extra_body.google.thinking_config"); tc.Exists() && tc.IsObject() {
 			var setBudget bool
-			var normalized int
+			var budget int
 			if v := tc.Get("thinking_budget"); v.Exists() {
-				normalized = util.NormalizeThinkingBudget(modelName, int(v.Int()))
-				out, _ = sjson.Set(out, "generationConfig.thinkingConfig.thinkingBudget", normalized)
+				budget = int(v.Int())
+				out, _ = sjson.Set(out, "generationConfig.thinkingConfig.thinkingBudget", budget)
 				setBudget = true
 			}
 			if v := tc.Get("include_thoughts"); v.Exists() {
 				out, _ = sjson.Set(out, "generationConfig.thinkingConfig.include_thoughts", v.Bool())
 			} else if setBudget {
-				if normalized != 0 {
+				if budget != 0 {
 					out, _ = sjson.Set(out, "generationConfig.thinkingConfig.include_thoughts", true)
 				}
 			}
 		}
 	}
 
-	// For gemini-3-pro-preview, always send default thinkingConfig when none specified.
-	// This matches the official Gemini CLI behavior which always sends:
-	// { thinkingBudget: -1, includeThoughts: true }
-	// See: ai-gemini-cli/packages/core/src/config/defaultModelConfigs.ts
-	if !gjson.Get(out, "generationConfig.thinkingConfig").Exists() && modelName == "gemini-3-pro-preview" {
-		out, _ = sjson.Set(out, "generationConfig.thinkingConfig.thinkingBudget", -1)
-		out, _ = sjson.Set(out, "generationConfig.thinkingConfig.include_thoughts", true)
-		// log.Debugf("Applied default thinkingConfig for gemini-3-pro-preview (matches Gemini CLI): thinkingBudget=-1, include_thoughts=true")
-	}
-
 	result := []byte(out)
 	result = common.AttachDefaultSafetySettings(result, "safetySettings")
 	return result

internal/translator/gemini/openai/responses/gemini_openai-responses_response.go

@@ -5,6 +5,7 @@ import (
 	"context"
 	"fmt"
 	"strings"
+	"sync/atomic"
 	"time"
 
 	"github.com/tidwall/gjson"
@@ -37,6 +38,12 @@ type geminiToResponsesState struct {
 	FuncCallIDs map[int]string
 }
 
+// responseIDCounter provides a process-wide unique counter for synthesized response identifiers.
+var responseIDCounter uint64
+
+// funcCallIDCounter provides a process-wide unique counter for function call identifiers.
+var funcCallIDCounter uint64
+
 func emitEvent(event string, payload string) string {
 	return fmt.Sprintf("event: %s\ndata: %s", event, payload)
 }
@@ -205,7 +212,7 @@ func ConvertGeminiResponseToOpenAIResponses(_ context.Context, modelName string,
 					st.FuncArgsBuf[idx] = &strings.Builder{}
 				}
 				if st.FuncCallIDs[idx] == "" {
-					st.FuncCallIDs[idx] = fmt.Sprintf("call_%d", time.Now().UnixNano())
+					st.FuncCallIDs[idx] = fmt.Sprintf("call_%d_%d", time.Now().UnixNano(), atomic.AddUint64(&funcCallIDCounter, 1))
 				}
 				st.FuncNames[idx] = name
 
@@ -464,7 +471,7 @@ func ConvertGeminiResponseToOpenAIResponsesNonStream(_ context.Context, _ string
 	// id: prefer provider responseId, otherwise synthesize
 	id := root.Get("responseId").String()
 	if id == "" {
-		id = fmt.Sprintf("resp_%x", time.Now().UnixNano())
+		id = fmt.Sprintf("resp_%x_%d", time.Now().UnixNano(), atomic.AddUint64(&responseIDCounter, 1))
 	}
 	// Normalize to response-style id (prefix resp_ if missing)
 	if !strings.HasPrefix(id, "resp_") {
@@ -575,7 +582,7 @@ func ConvertGeminiResponseToOpenAIResponsesNonStream(_ context.Context, _ string
 			if fc := p.Get("functionCall"); fc.Exists() {
 				name := fc.Get("name").String()
 				args := fc.Get("args")
-				callID := fmt.Sprintf("call_%x", time.Now().UnixNano())
+				callID := fmt.Sprintf("call_%x_%d", time.Now().UnixNano(), atomic.AddUint64(&funcCallIDCounter, 1))
 				outputs = append(outputs, map[string]interface{}{
 					"id":     fmt.Sprintf("fc_%s", callID),
 					"type":   "function_call",

internal/translator/openai/claude/openai_claude_request.go

@@ -8,6 +8,7 @@ package claude
 import (
 	"bytes"
 	"encoding/json"
+	"strings"
 
 	"github.com/tidwall/gjson"
 	"github.com/tidwall/sjson"
@@ -242,11 +243,12 @@ func convertClaudeContentPart(part gjson.Result) (string, bool) {
 
 	switch partType {
 	case "text":
-		if !part.Get("text").Exists() {
+		text := part.Get("text").String()
+		if strings.TrimSpace(text) == "" {
 			return "", false
 		}
 		textContent := `{"type":"text","text":""}`
-		textContent, _ = sjson.Set(textContent, "text", part.Get("text").String())
+		textContent, _ = sjson.Set(textContent, "text", text)
 		return textContent, true
 
 	case "image":

internal/translator/openai/openai/responses/openai_openai-responses_response.go

@@ -5,6 +5,7 @@ import (
 	"context"
 	"fmt"
 	"strings"
+	"sync/atomic"
 	"time"
 
 	"github.com/tidwall/gjson"
@@ -41,6 +42,9 @@ type oaiToResponsesState struct {
 	UsageSeen        bool
 }
 
+// responseIDCounter provides a process-wide unique counter for synthesized response identifiers.
+var responseIDCounter uint64
+
 func emitRespEvent(event string, payload string) string {
 	return fmt.Sprintf("event: %s\ndata: %s", event, payload)
 }
@@ -590,7 +594,7 @@ func ConvertOpenAIChatCompletionsResponseToOpenAIResponsesNonStream(_ context.Co
 	// id: use provider id if present, otherwise synthesize
 	id := root.Get("id").String()
 	if id == "" {
-		id = fmt.Sprintf("resp_%x", time.Now().UnixNano())
+		id = fmt.Sprintf("resp_%x_%d", time.Now().UnixNano(), atomic.AddUint64(&responseIDCounter, 1))
 	}
 	resp, _ = sjson.Set(resp, "id", id)
 

internal/util/gemini_thinking.go

@@ -207,6 +207,47 @@ func GeminiThinkingFromMetadata(metadata map[string]any) (*int, *bool, bool) {
 	return budgetPtr, includePtr, matched
 }
 
+// modelsWithDefaultThinking lists models that should have thinking enabled by default
+// when no explicit thinkingConfig is provided.
+var modelsWithDefaultThinking = map[string]bool{
+	"gemini-3-pro-preview": true,
+}
+
+// ModelHasDefaultThinking returns true if the model should have thinking enabled by default.
+func ModelHasDefaultThinking(model string) bool {
+	return modelsWithDefaultThinking[model]
+}
+
+// ApplyDefaultThinkingIfNeeded injects default thinkingConfig for models that require it.
+// For standard Gemini API format (generationConfig.thinkingConfig path).
+// Returns the modified body if thinkingConfig was added, otherwise returns the original.
+func ApplyDefaultThinkingIfNeeded(model string, body []byte) []byte {
+	if !ModelHasDefaultThinking(model) {
+		return body
+	}
+	if gjson.GetBytes(body, "generationConfig.thinkingConfig").Exists() {
+		return body
+	}
+	updated, _ := sjson.SetBytes(body, "generationConfig.thinkingConfig.thinkingBudget", -1)
+	updated, _ = sjson.SetBytes(updated, "generationConfig.thinkingConfig.include_thoughts", true)
+	return updated
+}
+
+// ApplyDefaultThinkingIfNeededCLI injects default thinkingConfig for models that require it.
+// For Gemini CLI API format (request.generationConfig.thinkingConfig path).
+// Returns the modified body if thinkingConfig was added, otherwise returns the original.
+func ApplyDefaultThinkingIfNeededCLI(model string, body []byte) []byte {
+	if !ModelHasDefaultThinking(model) {
+		return body
+	}
+	if gjson.GetBytes(body, "request.generationConfig.thinkingConfig").Exists() {
+		return body
+	}
+	updated, _ := sjson.SetBytes(body, "request.generationConfig.thinkingConfig.thinkingBudget", -1)
+	updated, _ = sjson.SetBytes(updated, "request.generationConfig.thinkingConfig.include_thoughts", true)
+	return updated
+}
+
 // StripThinkingConfigIfUnsupported removes thinkingConfig from the request body
 // when the target model does not advertise Thinking capability. It cleans both
 // standard Gemini and Gemini CLI JSON envelopes. This acts as a final safety net
@@ -223,6 +264,32 @@ func StripThinkingConfigIfUnsupported(model string, body []byte) []byte {
 	return updated
 }
 
+// NormalizeGeminiThinkingBudget normalizes the thinkingBudget value in a standard Gemini
+// request body (generationConfig.thinkingConfig.thinkingBudget path).
+func NormalizeGeminiThinkingBudget(model string, body []byte) []byte {
+	const budgetPath = "generationConfig.thinkingConfig.thinkingBudget"
+	budget := gjson.GetBytes(body, budgetPath)
+	if !budget.Exists() {
+		return body
+	}
+	normalized := NormalizeThinkingBudget(model, int(budget.Int()))
+	updated, _ := sjson.SetBytes(body, budgetPath, normalized)
+	return updated
+}
+
+// NormalizeGeminiCLIThinkingBudget normalizes the thinkingBudget value in a Gemini CLI
+// request body (request.generationConfig.thinkingConfig.thinkingBudget path).
+func NormalizeGeminiCLIThinkingBudget(model string, body []byte) []byte {
+	const budgetPath = "request.generationConfig.thinkingConfig.thinkingBudget"
+	budget := gjson.GetBytes(body, budgetPath)
+	if !budget.Exists() {
+		return body
+	}
+	normalized := NormalizeThinkingBudget(model, int(budget.Int()))
+	updated, _ := sjson.SetBytes(body, budgetPath, normalized)
+	return updated
+}
+
 // ConvertThinkingLevelToBudget checks for "generationConfig.thinkingConfig.thinkingLevel"
 // and converts it to "thinkingBudget".
 // "high" -> 32768

sdk/api/handlers/gemini/gemini_handlers.go

@@ -48,8 +48,24 @@ func (h *GeminiAPIHandler) Models() []map[string]any {
 // GeminiModels handles the Gemini models listing endpoint.
 // It returns a JSON response containing available Gemini models and their specifications.
 func (h *GeminiAPIHandler) GeminiModels(c *gin.Context) {
+	rawModels := h.Models()
+	normalizedModels := make([]map[string]any, 0, len(rawModels))
+	defaultMethods := []string{"generateContent"}
+	for _, model := range rawModels {
+		normalizedModel := make(map[string]any, len(model))
+		for k, v := range model {
+			normalizedModel[k] = v
+		}
+		if name, ok := normalizedModel["name"].(string); ok && name != "" && !strings.HasPrefix(name, "models/") {
+			normalizedModel["name"] = "models/" + name
+		}
+		if _, ok := normalizedModel["supportedGenerationMethods"]; !ok {
+			normalizedModel["supportedGenerationMethods"] = defaultMethods
+		}
+		normalizedModels = append(normalizedModels, normalizedModel)
+	}
 	c.JSON(http.StatusOK, gin.H{
-		"models": h.Models(),
+		"models": normalizedModels,
 	})
 }
 

sdk/cliproxy/service.go

@@ -498,7 +498,7 @@ func (s *Service) Run(ctx context.Context) error {
 	}()
 
 	time.Sleep(100 * time.Millisecond)
-	fmt.Printf("API server started successfully on: %d\n", s.cfg.Port)
+	fmt.Printf("API server started successfully on: %s:%d\n", s.cfg.Host, s.cfg.Port)
 
 	if s.hooks.OnAfterStart != nil {
 		s.hooks.OnAfterStart(s)
@@ -779,7 +779,7 @@ func (s *Service) registerModelsForAuth(a *coreauth.Auth) {
 							Created:     time.Now().Unix(),
 							OwnedBy:     compat.Name,
 							Type:        "openai-compatibility",
-							DisplayName: m.Name,
+							DisplayName: modelID,
 						})
 					}
 					// Register and return

test/amp_management_test.go

@@ -0,0 +1,827 @@
+package test
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/gin-gonic/gin"
+	"github.com/router-for-me/CLIProxyAPI/v6/internal/api/handlers/management"
+	"github.com/router-for-me/CLIProxyAPI/v6/internal/config"
+)
+
+func init() {
+	gin.SetMode(gin.TestMode)
+}
+
+// newAmpTestHandler creates a test handler with default ampcode configuration.
+func newAmpTestHandler(t *testing.T) (*management.Handler, string) {
+	t.Helper()
+	tmpDir := t.TempDir()
+	configPath := filepath.Join(tmpDir, "config.yaml")
+
+	cfg := &config.Config{
+		AmpCode: config.AmpCode{
+			UpstreamURL:                   "https://example.com",
+			UpstreamAPIKey:                "test-api-key-12345",
+			RestrictManagementToLocalhost: true,
+			ForceModelMappings:            false,
+			ModelMappings: []config.AmpModelMapping{
+				{From: "gpt-4", To: "gemini-pro"},
+			},
+		},
+	}
+
+	if err := os.WriteFile(configPath, []byte("port: 8080\n"), 0644); err != nil {
+		t.Fatalf("failed to write config file: %v", err)
+	}
+
+	h := management.NewHandler(cfg, configPath, nil)
+	return h, configPath
+}
+
+// setupAmpRouter creates a test router with all ampcode management endpoints.
+func setupAmpRouter(h *management.Handler) *gin.Engine {
+	r := gin.New()
+	mgmt := r.Group("/v0/management")
+	{
+		mgmt.GET("/ampcode", h.GetAmpCode)
+		mgmt.GET("/ampcode/upstream-url", h.GetAmpUpstreamURL)
+		mgmt.PUT("/ampcode/upstream-url", h.PutAmpUpstreamURL)
+		mgmt.DELETE("/ampcode/upstream-url", h.DeleteAmpUpstreamURL)
+		mgmt.GET("/ampcode/upstream-api-key", h.GetAmpUpstreamAPIKey)
+		mgmt.PUT("/ampcode/upstream-api-key", h.PutAmpUpstreamAPIKey)
+		mgmt.DELETE("/ampcode/upstream-api-key", h.DeleteAmpUpstreamAPIKey)
+		mgmt.GET("/ampcode/restrict-management-to-localhost", h.GetAmpRestrictManagementToLocalhost)
+		mgmt.PUT("/ampcode/restrict-management-to-localhost", h.PutAmpRestrictManagementToLocalhost)
+		mgmt.GET("/ampcode/model-mappings", h.GetAmpModelMappings)
+		mgmt.PUT("/ampcode/model-mappings", h.PutAmpModelMappings)
+		mgmt.PATCH("/ampcode/model-mappings", h.PatchAmpModelMappings)
+		mgmt.DELETE("/ampcode/model-mappings", h.DeleteAmpModelMappings)
+		mgmt.GET("/ampcode/force-model-mappings", h.GetAmpForceModelMappings)
+		mgmt.PUT("/ampcode/force-model-mappings", h.PutAmpForceModelMappings)
+	}
+	return r
+}
+
+// TestGetAmpCode verifies GET /v0/management/ampcode returns full ampcode config.
+func TestGetAmpCode(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	req := httptest.NewRequest(http.MethodGet, "/v0/management/ampcode", nil)
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected status %d, got %d", http.StatusOK, w.Code)
+	}
+
+	var resp map[string]config.AmpCode
+	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+		t.Fatalf("failed to unmarshal response: %v", err)
+	}
+
+	ampcode := resp["ampcode"]
+	if ampcode.UpstreamURL != "https://example.com" {
+		t.Errorf("expected upstream-url %q, got %q", "https://example.com", ampcode.UpstreamURL)
+	}
+	if len(ampcode.ModelMappings) != 1 {
+		t.Errorf("expected 1 model mapping, got %d", len(ampcode.ModelMappings))
+	}
+}
+
+// TestGetAmpUpstreamURL verifies GET /v0/management/ampcode/upstream-url returns the upstream URL.
+func TestGetAmpUpstreamURL(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	req := httptest.NewRequest(http.MethodGet, "/v0/management/ampcode/upstream-url", nil)
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected status %d, got %d", http.StatusOK, w.Code)
+	}
+
+	var resp map[string]string
+	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+		t.Fatalf("failed to unmarshal response: %v", err)
+	}
+
+	if resp["upstream-url"] != "https://example.com" {
+		t.Errorf("expected %q, got %q", "https://example.com", resp["upstream-url"])
+	}
+}
+
+// TestPutAmpUpstreamURL verifies PUT /v0/management/ampcode/upstream-url updates the upstream URL.
+func TestPutAmpUpstreamURL(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	body := `{"value": "https://new-upstream.com"}`
+	req := httptest.NewRequest(http.MethodPut, "/v0/management/ampcode/upstream-url", bytes.NewBufferString(body))
+	req.Header.Set("Content-Type", "application/json")
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected status %d, got %d: %s", http.StatusOK, w.Code, w.Body.String())
+	}
+}
+
+// TestDeleteAmpUpstreamURL verifies DELETE /v0/management/ampcode/upstream-url clears the upstream URL.
+func TestDeleteAmpUpstreamURL(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	req := httptest.NewRequest(http.MethodDelete, "/v0/management/ampcode/upstream-url", nil)
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected status %d, got %d", http.StatusOK, w.Code)
+	}
+}
+
+// TestGetAmpUpstreamAPIKey verifies GET /v0/management/ampcode/upstream-api-key returns the API key.
+func TestGetAmpUpstreamAPIKey(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	req := httptest.NewRequest(http.MethodGet, "/v0/management/ampcode/upstream-api-key", nil)
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected status %d, got %d", http.StatusOK, w.Code)
+	}
+
+	var resp map[string]any
+	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+		t.Fatalf("failed to unmarshal response: %v", err)
+	}
+
+	key := resp["upstream-api-key"].(string)
+	if key != "test-api-key-12345" {
+		t.Errorf("expected key %q, got %q", "test-api-key-12345", key)
+	}
+}
+
+// TestPutAmpUpstreamAPIKey verifies PUT /v0/management/ampcode/upstream-api-key updates the API key.
+func TestPutAmpUpstreamAPIKey(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	body := `{"value": "new-secret-key"}`
+	req := httptest.NewRequest(http.MethodPut, "/v0/management/ampcode/upstream-api-key", bytes.NewBufferString(body))
+	req.Header.Set("Content-Type", "application/json")
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected status %d, got %d", http.StatusOK, w.Code)
+	}
+}
+
+// TestDeleteAmpUpstreamAPIKey verifies DELETE /v0/management/ampcode/upstream-api-key clears the API key.
+func TestDeleteAmpUpstreamAPIKey(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	req := httptest.NewRequest(http.MethodDelete, "/v0/management/ampcode/upstream-api-key", nil)
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected status %d, got %d", http.StatusOK, w.Code)
+	}
+}
+
+// TestGetAmpRestrictManagementToLocalhost verifies GET returns the localhost restriction setting.
+func TestGetAmpRestrictManagementToLocalhost(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	req := httptest.NewRequest(http.MethodGet, "/v0/management/ampcode/restrict-management-to-localhost", nil)
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected status %d, got %d", http.StatusOK, w.Code)
+	}
+
+	var resp map[string]bool
+	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+		t.Fatalf("failed to unmarshal response: %v", err)
+	}
+
+	if resp["restrict-management-to-localhost"] != true {
+		t.Error("expected restrict-management-to-localhost to be true")
+	}
+}
+
+// TestPutAmpRestrictManagementToLocalhost verifies PUT updates the localhost restriction setting.
+func TestPutAmpRestrictManagementToLocalhost(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	body := `{"value": false}`
+	req := httptest.NewRequest(http.MethodPut, "/v0/management/ampcode/restrict-management-to-localhost", bytes.NewBufferString(body))
+	req.Header.Set("Content-Type", "application/json")
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected status %d, got %d", http.StatusOK, w.Code)
+	}
+}
+
+// TestGetAmpModelMappings verifies GET /v0/management/ampcode/model-mappings returns all mappings.
+func TestGetAmpModelMappings(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	req := httptest.NewRequest(http.MethodGet, "/v0/management/ampcode/model-mappings", nil)
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected status %d, got %d", http.StatusOK, w.Code)
+	}
+
+	var resp map[string][]config.AmpModelMapping
+	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+		t.Fatalf("failed to unmarshal response: %v", err)
+	}
+
+	mappings := resp["model-mappings"]
+	if len(mappings) != 1 {
+		t.Fatalf("expected 1 mapping, got %d", len(mappings))
+	}
+	if mappings[0].From != "gpt-4" || mappings[0].To != "gemini-pro" {
+		t.Errorf("unexpected mapping: %+v", mappings[0])
+	}
+}
+
+// TestPutAmpModelMappings verifies PUT /v0/management/ampcode/model-mappings replaces all mappings.
+func TestPutAmpModelMappings(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	body := `{"value": [{"from": "claude-3", "to": "gpt-4o"}, {"from": "gemini", "to": "claude"}]}`
+	req := httptest.NewRequest(http.MethodPut, "/v0/management/ampcode/model-mappings", bytes.NewBufferString(body))
+	req.Header.Set("Content-Type", "application/json")
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected status %d, got %d: %s", http.StatusOK, w.Code, w.Body.String())
+	}
+}
+
+// TestPatchAmpModelMappings verifies PATCH updates existing mappings and adds new ones.
+func TestPatchAmpModelMappings(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	body := `{"value": [{"from": "gpt-4", "to": "updated-model"}, {"from": "new-model", "to": "target"}]}`
+	req := httptest.NewRequest(http.MethodPatch, "/v0/management/ampcode/model-mappings", bytes.NewBufferString(body))
+	req.Header.Set("Content-Type", "application/json")
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected status %d, got %d: %s", http.StatusOK, w.Code, w.Body.String())
+	}
+}
+
+// TestDeleteAmpModelMappings_Specific verifies DELETE removes specified mappings by "from" field.
+func TestDeleteAmpModelMappings_Specific(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	body := `{"value": ["gpt-4"]}`
+	req := httptest.NewRequest(http.MethodDelete, "/v0/management/ampcode/model-mappings", bytes.NewBufferString(body))
+	req.Header.Set("Content-Type", "application/json")
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected status %d, got %d", http.StatusOK, w.Code)
+	}
+}
+
+// TestDeleteAmpModelMappings_All verifies DELETE with empty body removes all mappings.
+func TestDeleteAmpModelMappings_All(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	req := httptest.NewRequest(http.MethodDelete, "/v0/management/ampcode/model-mappings", nil)
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected status %d, got %d", http.StatusOK, w.Code)
+	}
+}
+
+// TestGetAmpForceModelMappings verifies GET returns the force-model-mappings setting.
+func TestGetAmpForceModelMappings(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	req := httptest.NewRequest(http.MethodGet, "/v0/management/ampcode/force-model-mappings", nil)
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected status %d, got %d", http.StatusOK, w.Code)
+	}
+
+	var resp map[string]bool
+	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+		t.Fatalf("failed to unmarshal response: %v", err)
+	}
+
+	if resp["force-model-mappings"] != false {
+		t.Error("expected force-model-mappings to be false")
+	}
+}
+
+// TestPutAmpForceModelMappings verifies PUT updates the force-model-mappings setting.
+func TestPutAmpForceModelMappings(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	body := `{"value": true}`
+	req := httptest.NewRequest(http.MethodPut, "/v0/management/ampcode/force-model-mappings", bytes.NewBufferString(body))
+	req.Header.Set("Content-Type", "application/json")
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected status %d, got %d", http.StatusOK, w.Code)
+	}
+}
+
+// TestPutAmpModelMappings_VerifyState verifies PUT replaces mappings and state is persisted.
+func TestPutAmpModelMappings_VerifyState(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	body := `{"value": [{"from": "model-a", "to": "model-b"}, {"from": "model-c", "to": "model-d"}, {"from": "model-e", "to": "model-f"}]}`
+	req := httptest.NewRequest(http.MethodPut, "/v0/management/ampcode/model-mappings", bytes.NewBufferString(body))
+	req.Header.Set("Content-Type", "application/json")
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("PUT failed: status %d, body: %s", w.Code, w.Body.String())
+	}
+
+	req = httptest.NewRequest(http.MethodGet, "/v0/management/ampcode/model-mappings", nil)
+	w = httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	var resp map[string][]config.AmpModelMapping
+	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+		t.Fatalf("failed to unmarshal: %v", err)
+	}
+
+	mappings := resp["model-mappings"]
+	if len(mappings) != 3 {
+		t.Fatalf("expected 3 mappings, got %d", len(mappings))
+	}
+
+	expected := map[string]string{"model-a": "model-b", "model-c": "model-d", "model-e": "model-f"}
+	for _, m := range mappings {
+		if expected[m.From] != m.To {
+			t.Errorf("mapping %q -> expected %q, got %q", m.From, expected[m.From], m.To)
+		}
+	}
+}
+
+// TestPatchAmpModelMappings_VerifyState verifies PATCH merges mappings correctly.
+func TestPatchAmpModelMappings_VerifyState(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	body := `{"value": [{"from": "gpt-4", "to": "updated-target"}, {"from": "new-model", "to": "new-target"}]}`
+	req := httptest.NewRequest(http.MethodPatch, "/v0/management/ampcode/model-mappings", bytes.NewBufferString(body))
+	req.Header.Set("Content-Type", "application/json")
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("PATCH failed: status %d", w.Code)
+	}
+
+	req = httptest.NewRequest(http.MethodGet, "/v0/management/ampcode/model-mappings", nil)
+	w = httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	var resp map[string][]config.AmpModelMapping
+	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+		t.Fatalf("failed to unmarshal: %v", err)
+	}
+
+	mappings := resp["model-mappings"]
+	if len(mappings) != 2 {
+		t.Fatalf("expected 2 mappings (1 updated + 1 new), got %d", len(mappings))
+	}
+
+	found := make(map[string]string)
+	for _, m := range mappings {
+		found[m.From] = m.To
+	}
+
+	if found["gpt-4"] != "updated-target" {
+		t.Errorf("gpt-4 should map to updated-target, got %q", found["gpt-4"])
+	}
+	if found["new-model"] != "new-target" {
+		t.Errorf("new-model should map to new-target, got %q", found["new-model"])
+	}
+}
+
+// TestDeleteAmpModelMappings_VerifyState verifies DELETE removes specific mappings and keeps others.
+func TestDeleteAmpModelMappings_VerifyState(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	putBody := `{"value": [{"from": "a", "to": "1"}, {"from": "b", "to": "2"}, {"from": "c", "to": "3"}]}`
+	req := httptest.NewRequest(http.MethodPut, "/v0/management/ampcode/model-mappings", bytes.NewBufferString(putBody))
+	req.Header.Set("Content-Type", "application/json")
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	delBody := `{"value": ["a", "c"]}`
+	req = httptest.NewRequest(http.MethodDelete, "/v0/management/ampcode/model-mappings", bytes.NewBufferString(delBody))
+	req.Header.Set("Content-Type", "application/json")
+	w = httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("DELETE failed: status %d", w.Code)
+	}
+
+	req = httptest.NewRequest(http.MethodGet, "/v0/management/ampcode/model-mappings", nil)
+	w = httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	var resp map[string][]config.AmpModelMapping
+	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+		t.Fatalf("failed to unmarshal: %v", err)
+	}
+
+	mappings := resp["model-mappings"]
+	if len(mappings) != 1 {
+		t.Fatalf("expected 1 mapping remaining, got %d", len(mappings))
+	}
+	if mappings[0].From != "b" || mappings[0].To != "2" {
+		t.Errorf("expected b->2, got %s->%s", mappings[0].From, mappings[0].To)
+	}
+}
+
+// TestDeleteAmpModelMappings_NonExistent verifies DELETE with non-existent mapping doesn't affect existing ones.
+func TestDeleteAmpModelMappings_NonExistent(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	delBody := `{"value": ["non-existent-model"]}`
+	req := httptest.NewRequest(http.MethodDelete, "/v0/management/ampcode/model-mappings", bytes.NewBufferString(delBody))
+	req.Header.Set("Content-Type", "application/json")
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected status %d, got %d", http.StatusOK, w.Code)
+	}
+
+	req = httptest.NewRequest(http.MethodGet, "/v0/management/ampcode/model-mappings", nil)
+	w = httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	var resp map[string][]config.AmpModelMapping
+	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+		t.Fatalf("failed to unmarshal: %v", err)
+	}
+
+	if len(resp["model-mappings"]) != 1 {
+		t.Errorf("original mapping should remain, got %d mappings", len(resp["model-mappings"]))
+	}
+}
+
+// TestPutAmpModelMappings_Empty verifies PUT with empty array clears all mappings.
+func TestPutAmpModelMappings_Empty(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	body := `{"value": []}`
+	req := httptest.NewRequest(http.MethodPut, "/v0/management/ampcode/model-mappings", bytes.NewBufferString(body))
+	req.Header.Set("Content-Type", "application/json")
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected status %d, got %d", http.StatusOK, w.Code)
+	}
+
+	req = httptest.NewRequest(http.MethodGet, "/v0/management/ampcode/model-mappings", nil)
+	w = httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	var resp map[string][]config.AmpModelMapping
+	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+		t.Fatalf("failed to unmarshal: %v", err)
+	}
+
+	if len(resp["model-mappings"]) != 0 {
+		t.Errorf("expected 0 mappings, got %d", len(resp["model-mappings"]))
+	}
+}
+
+// TestPutAmpUpstreamURL_VerifyState verifies PUT updates upstream URL and persists state.
+func TestPutAmpUpstreamURL_VerifyState(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	body := `{"value": "https://new-api.example.com"}`
+	req := httptest.NewRequest(http.MethodPut, "/v0/management/ampcode/upstream-url", bytes.NewBufferString(body))
+	req.Header.Set("Content-Type", "application/json")
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("PUT failed: status %d", w.Code)
+	}
+
+	req = httptest.NewRequest(http.MethodGet, "/v0/management/ampcode/upstream-url", nil)
+	w = httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	var resp map[string]string
+	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+		t.Fatalf("failed to unmarshal: %v", err)
+	}
+
+	if resp["upstream-url"] != "https://new-api.example.com" {
+		t.Errorf("expected %q, got %q", "https://new-api.example.com", resp["upstream-url"])
+	}
+}
+
+// TestDeleteAmpUpstreamURL_VerifyState verifies DELETE clears upstream URL.
+func TestDeleteAmpUpstreamURL_VerifyState(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	req := httptest.NewRequest(http.MethodDelete, "/v0/management/ampcode/upstream-url", nil)
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("DELETE failed: status %d", w.Code)
+	}
+
+	req = httptest.NewRequest(http.MethodGet, "/v0/management/ampcode/upstream-url", nil)
+	w = httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	var resp map[string]string
+	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+		t.Fatalf("failed to unmarshal: %v", err)
+	}
+
+	if resp["upstream-url"] != "" {
+		t.Errorf("expected empty string, got %q", resp["upstream-url"])
+	}
+}
+
+// TestPutAmpUpstreamAPIKey_VerifyState verifies PUT updates API key and persists state.
+func TestPutAmpUpstreamAPIKey_VerifyState(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	body := `{"value": "new-secret-api-key-xyz"}`
+	req := httptest.NewRequest(http.MethodPut, "/v0/management/ampcode/upstream-api-key", bytes.NewBufferString(body))
+	req.Header.Set("Content-Type", "application/json")
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("PUT failed: status %d", w.Code)
+	}
+
+	req = httptest.NewRequest(http.MethodGet, "/v0/management/ampcode/upstream-api-key", nil)
+	w = httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	var resp map[string]string
+	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+		t.Fatalf("failed to unmarshal: %v", err)
+	}
+
+	if resp["upstream-api-key"] != "new-secret-api-key-xyz" {
+		t.Errorf("expected %q, got %q", "new-secret-api-key-xyz", resp["upstream-api-key"])
+	}
+}
+
+// TestDeleteAmpUpstreamAPIKey_VerifyState verifies DELETE clears API key.
+func TestDeleteAmpUpstreamAPIKey_VerifyState(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	req := httptest.NewRequest(http.MethodDelete, "/v0/management/ampcode/upstream-api-key", nil)
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("DELETE failed: status %d", w.Code)
+	}
+
+	req = httptest.NewRequest(http.MethodGet, "/v0/management/ampcode/upstream-api-key", nil)
+	w = httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	var resp map[string]string
+	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+		t.Fatalf("failed to unmarshal: %v", err)
+	}
+
+	if resp["upstream-api-key"] != "" {
+		t.Errorf("expected empty string, got %q", resp["upstream-api-key"])
+	}
+}
+
+// TestPutAmpRestrictManagementToLocalhost_VerifyState verifies PUT updates localhost restriction.
+func TestPutAmpRestrictManagementToLocalhost_VerifyState(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	body := `{"value": false}`
+	req := httptest.NewRequest(http.MethodPut, "/v0/management/ampcode/restrict-management-to-localhost", bytes.NewBufferString(body))
+	req.Header.Set("Content-Type", "application/json")
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("PUT failed: status %d", w.Code)
+	}
+
+	req = httptest.NewRequest(http.MethodGet, "/v0/management/ampcode/restrict-management-to-localhost", nil)
+	w = httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	var resp map[string]bool
+	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+		t.Fatalf("failed to unmarshal: %v", err)
+	}
+
+	if resp["restrict-management-to-localhost"] != false {
+		t.Error("expected false after update")
+	}
+}
+
+// TestPutAmpForceModelMappings_VerifyState verifies PUT updates force-model-mappings setting.
+func TestPutAmpForceModelMappings_VerifyState(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	body := `{"value": true}`
+	req := httptest.NewRequest(http.MethodPut, "/v0/management/ampcode/force-model-mappings", bytes.NewBufferString(body))
+	req.Header.Set("Content-Type", "application/json")
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("PUT failed: status %d", w.Code)
+	}
+
+	req = httptest.NewRequest(http.MethodGet, "/v0/management/ampcode/force-model-mappings", nil)
+	w = httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	var resp map[string]bool
+	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+		t.Fatalf("failed to unmarshal: %v", err)
+	}
+
+	if resp["force-model-mappings"] != true {
+		t.Error("expected true after update")
+	}
+}
+
+// TestPutBoolField_EmptyObject verifies PUT with empty object returns 400.
+func TestPutBoolField_EmptyObject(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	body := `{}`
+	req := httptest.NewRequest(http.MethodPut, "/v0/management/ampcode/force-model-mappings", bytes.NewBufferString(body))
+	req.Header.Set("Content-Type", "application/json")
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusBadRequest {
+		t.Fatalf("expected status %d for empty object, got %d", http.StatusBadRequest, w.Code)
+	}
+}
+
+// TestComplexMappingsWorkflow tests a full workflow: PUT, PATCH, DELETE, and GET.
+func TestComplexMappingsWorkflow(t *testing.T) {
+	h, _ := newAmpTestHandler(t)
+	r := setupAmpRouter(h)
+
+	putBody := `{"value": [{"from": "m1", "to": "t1"}, {"from": "m2", "to": "t2"}, {"from": "m3", "to": "t3"}, {"from": "m4", "to": "t4"}]}`
+	req := httptest.NewRequest(http.MethodPut, "/v0/management/ampcode/model-mappings", bytes.NewBufferString(putBody))
+	req.Header.Set("Content-Type", "application/json")
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	patchBody := `{"value": [{"from": "m2", "to": "t2-updated"}, {"from": "m5", "to": "t5"}]}`
+	req = httptest.NewRequest(http.MethodPatch, "/v0/management/ampcode/model-mappings", bytes.NewBufferString(patchBody))
+	req.Header.Set("Content-Type", "application/json")
+	w = httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	delBody := `{"value": ["m1", "m3"]}`
+	req = httptest.NewRequest(http.MethodDelete, "/v0/management/ampcode/model-mappings", bytes.NewBufferString(delBody))
+	req.Header.Set("Content-Type", "application/json")
+	w = httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	req = httptest.NewRequest(http.MethodGet, "/v0/management/ampcode/model-mappings", nil)
+	w = httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	var resp map[string][]config.AmpModelMapping
+	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+		t.Fatalf("failed to unmarshal: %v", err)
+	}
+
+	mappings := resp["model-mappings"]
+	if len(mappings) != 3 {
+		t.Fatalf("expected 3 mappings (m2, m4, m5), got %d", len(mappings))
+	}
+
+	expected := map[string]string{"m2": "t2-updated", "m4": "t4", "m5": "t5"}
+	found := make(map[string]string)
+	for _, m := range mappings {
+		found[m.From] = m.To
+	}
+
+	for from, to := range expected {
+		if found[from] != to {
+			t.Errorf("mapping %s: expected %q, got %q", from, to, found[from])
+		}
+	}
+}
+
+// TestNilHandlerGetAmpCode verifies handler works with empty config.
+func TestNilHandlerGetAmpCode(t *testing.T) {
+	cfg := &config.Config{}
+	h := management.NewHandler(cfg, "", nil)
+	r := setupAmpRouter(h)
+
+	req := httptest.NewRequest(http.MethodGet, "/v0/management/ampcode", nil)
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected status %d, got %d", http.StatusOK, w.Code)
+	}
+}
+
+// TestEmptyConfigGetAmpModelMappings verifies GET returns empty array for fresh config.
+func TestEmptyConfigGetAmpModelMappings(t *testing.T) {
+	cfg := &config.Config{}
+	tmpDir := t.TempDir()
+	configPath := filepath.Join(tmpDir, "config.yaml")
+	if err := os.WriteFile(configPath, []byte("port: 8080\n"), 0644); err != nil {
+		t.Fatalf("failed to write config: %v", err)
+	}
+
+	h := management.NewHandler(cfg, configPath, nil)
+	r := setupAmpRouter(h)
+
+	req := httptest.NewRequest(http.MethodGet, "/v0/management/ampcode/model-mappings", nil)
+	w := httptest.NewRecorder()
+	r.ServeHTTP(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected status %d, got %d", http.StatusOK, w.Code)
+	}
+
+	var resp map[string][]config.AmpModelMapping
+	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+		t.Fatalf("failed to unmarshal: %v", err)
+	}
+
+	if len(resp["model-mappings"]) != 0 {
+		t.Errorf("expected 0 mappings, got %d", len(resp["model-mappings"]))
+	}
+}