Add FunctionCallIndex to ConvertCliToOpenAIParams and enhance tool call handling

- Introduced `FunctionCallIndex` to track and manage function call indices within `ConvertCliToOpenAIParams`. - Enhanced handling for `response.completed` and `response.output_item.done` data types to support tool call scenarios. - Improved logic for restoring original tool names and setting function arguments during response parsing.
Add Codex API key support and Gemini 2.5 Flash-Lite model documentation updates
2026-02-04 21:40:51 +08:00 · 2025-09-05 09:02:24 +08:00 · 2025-09-04 18:23:52 +08:00
4 changed files with 56 additions and 22 deletions
--- a/README.md
+++ b/README.md
@@ -220,6 +220,7 @@ console.log(await claudeResponse.json());

 - gemini-2.5-pro
 - gemini-2.5-flash
+- gemini-2.5-flash-lite
 - gpt-5
 - claude-opus-4-1-20250805
 - claude-opus-4-20250514
@@ -254,6 +255,9 @@ The server uses a YAML configuration file (`config.yaml`) located in the project
 | `debug`                                 | boolean  | false              | Enable debug mode for verbose logging.                                                                                                                                                    |
 | `api-keys`                              | string[] | []                 | List of API keys that can be used to authenticate requests.                                                                                                                               |
 | `generative-language-api-key`           | string[] | []                 | List of Generative Language API keys.                                                                                                                                                     |
+| `codex-api-key`                         | object   | {}                 | List of Codex API keys.                                                                                                                                                                   |
+| `codex-api-key.api-key`                 | string   | ""                 | Codex API key.                                                                                                                                                                            |
+| `codex-api-key.base-url`                | string   | ""                 | Custom Codex API endpoint, if you use a third-party API endpoint.                                                                                                                         |
 | `claude-api-key`                        | object   | {}                 | List of Claude API keys.                                                                                                                                                                  |
 | `claude-api-key.api-key`                | string   | ""                 | Claude API key.                                                                                                                                                                           |
 | `claude-api-key.base-url`               | string   | ""                 | Custom Claude API endpoint, if you use a third-party API endpoint.                                                                                                                        |
@@ -310,6 +314,11 @@ generative-language-api-key:
  - "AIzaSy...02"
  - "AIzaSy...03"
  - "AIzaSy...04"
+
+# Codex API keys
+codex-api-key:
+  - api-key: "sk-atSM..."
+    base-url: "https://www.example.com" # use the custom codex API endpoint
  
 # Claude API keys
 claude-api-key:
--- a/README_CN.md
+++ b/README_CN.md
@@ -237,6 +237,7 @@ console.log(await claudeResponse.json());

 - gemini-2.5-pro
 - gemini-2.5-flash
+- gemini-2.5-flash-lite
 - gpt-5
 - claude-opus-4-1-20250805
 - claude-opus-4-20250514
@@ -271,6 +272,9 @@ console.log(await claudeResponse.json());
 | `debug`                                 | boolean  | false              | 启用调试模式以获取详细日志。                                                      |
 | `api-keys`                              | string[] | []                 | 可用于验证请求的API密钥列表。                                                    |
 | `generative-language-api-key`           | string[] | []                 | 生成式语言API密钥列表。                                                       |
+| `codex-api-key`                         | object   | {}                 | Codex API密钥列表。                                                      |
+| `codex-api-key.api-key`                 | string   | ""                 | Codex API密钥。                                                        |
+| `codex-api-key.base-url`                | string   | ""                 | 自定义的Codex API端点                                                     |
 | `claude-api-key`                        | object   | {}                 | Claude API密钥列表。                                                     |
 | `claude-api-key.api-key`                | string   | ""                 | Claude API密钥。                                                       |
 | `claude-api-key.base-url`               | string   | ""                 | 自定义的Claude API端点，如果您使用第三方的API端点。                                    |
@@ -328,11 +332,16 @@ generative-language-api-key:
  - "AIzaSy...03"
  - "AIzaSy...04"

-# Claude API keys
-claude-api-key:
-  - api-key: "sk-atSM..." # use the official claude API key, no need to set the base url
+# Codex API 密钥
+codex-api-key:
  - api-key: "sk-atSM..."
-    base-url: "https://www.example.com" # use the custom claude API endpoint
+    base-url: "https://www.example.com" # 第三方 Codex API 中转服务端点
+
+# Claude API 密钥
+claude-api-key:
+  - api-key: "sk-atSM..." # 如果使用官方 Claude API，无需设置 base-url
+  - api-key: "sk-atSM..."
+    base-url: "https://www.example.com" # 第三方 Claude API 中转服务端点

 # OpenAI 兼容提供商
 openai-compatibility:
--- a/config.example.yaml
+++ b/config.example.yaml
@@ -41,6 +41,11 @@ generative-language-api-key:
  - "AIzaSy...03"
  - "AIzaSy...04"

+# Codex API keys
+codex-api-key:
+  - api-key: "sk-atSM..."
+    base-url: "https://www.example.com" # use the custom codex API endpoint
+
 # Claude API keys
 claude-api-key:
  - api-key: "sk-atSM..." # use the official claude API key, no need to set the base url
--- a/internal/translator/codex/openai/chat-completions/codex_openai_response.go
+++ b/internal/translator/codex/openai/chat-completions/codex_openai_response.go
@@ -21,9 +21,10 @@ var (

 // ConvertCliToOpenAIParams holds parameters for response conversion.
 type ConvertCliToOpenAIParams struct {
-	ResponseID string
-	CreatedAt  int64
-	Model      string
+	ResponseID        string
+	CreatedAt         int64
+	Model             string
+	FunctionCallIndex int
 }

 // ConvertCodexResponseToOpenAI translates a single chunk of a streaming response from the
@@ -43,9 +44,10 @@ type ConvertCliToOpenAIParams struct {
 func ConvertCodexResponseToOpenAI(_ context.Context, modelName string, originalRequestRawJSON, requestRawJSON, rawJSON []byte, param *any) []string {
 	if *param == nil {
 		*param = &ConvertCliToOpenAIParams{
-			Model:      modelName,
-			CreatedAt:  0,
-			ResponseID: "",
+			Model:             modelName,
+			CreatedAt:         0,
+			ResponseID:        "",
+			FunctionCallIndex: -1,
 		}
 	}

@@ -108,27 +110,36 @@ func ConvertCodexResponseToOpenAI(_ context.Context, modelName string, originalR
 			template, _ = sjson.Set(template, "choices.0.delta.content", deltaResult.String())
 		}
 	} else if dataType == "response.completed" {
-		template, _ = sjson.Set(template, "choices.0.finish_reason", "stop")
-		template, _ = sjson.Set(template, "choices.0.native_finish_reason", "stop")
+		finishReason := "stop"
+		if (*param).(*ConvertCliToOpenAIParams).FunctionCallIndex != -1 {
+			finishReason = "tool_calls"
+		}
+		template, _ = sjson.Set(template, "choices.0.finish_reason", finishReason)
+		template, _ = sjson.Set(template, "choices.0.native_finish_reason", finishReason)
 	} else if dataType == "response.output_item.done" {
-		functionCallItemTemplate := `{"id": "","type": "function","function": {"name": "","arguments": ""}}`
+		functionCallItemTemplate := `{"index":0,"id":"","type":"function","function":{"name":"","arguments":""}}`
 		itemResult := rootResult.Get("item")
 		if itemResult.Exists() {
 			if itemResult.Get("type").String() != "function_call" {
 				return []string{}
 			}
+
+			// set the index
+			(*param).(*ConvertCliToOpenAIParams).FunctionCallIndex++
+			functionCallItemTemplate, _ = sjson.Set(functionCallItemTemplate, "index", (*param).(*ConvertCliToOpenAIParams).FunctionCallIndex)
+
 			template, _ = sjson.SetRaw(template, "choices.0.delta.tool_calls", `[]`)
 			functionCallItemTemplate, _ = sjson.Set(functionCallItemTemplate, "id", itemResult.Get("call_id").String())
-			{
-				// Restore original tool name if it was shortened
-				name := itemResult.Get("name").String()
-				// Build reverse map on demand from original request tools
-				rev := buildReverseMapFromOriginalOpenAI(originalRequestRawJSON)
-				if orig, ok := rev[name]; ok {
-					name = orig
-				}
-				functionCallItemTemplate, _ = sjson.Set(functionCallItemTemplate, "function.name", name)
+
+			// Restore original tool name if it was shortened
+			name := itemResult.Get("name").String()
+			// Build reverse map on demand from original request tools
+			rev := buildReverseMapFromOriginalOpenAI(originalRequestRawJSON)
+			if orig, ok := rev[name]; ok {
+				name = orig
 			}
+			functionCallItemTemplate, _ = sjson.Set(functionCallItemTemplate, "function.name", name)
+
 			functionCallItemTemplate, _ = sjson.Set(functionCallItemTemplate, "function.arguments", itemResult.Get("arguments").String())
 			template, _ = sjson.Set(template, "choices.0.delta.role", "assistant")
 			template, _ = sjson.SetRaw(template, "choices.0.delta.tool_calls.-1", functionCallItemTemplate)