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fix(antigravity): convert non-string enum values to strings for Gemini API

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Gemini API requires all enum values in function declarations to be
strings. Some MCP tools (e.g., roxybrowser) define schemas with numeric
enums like `"enum": [0, 1, 2]`, causing INVALID_ARGUMENT errors.

Add convertEnumValuesToStrings() to automatically convert numeric and
boolean enum values to their string representations during schema
transformation.
This commit is contained in:
sususu98
2026-01-17 17:50:10 +08:00
committed by github-actions[bot]
parent f8f3ad84fc
commit dd6d78cb31
2 changed files with 79 additions and 0 deletions
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28
internal/util/gemini_schema.go
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@@ -19,6 +19,7 @@ func CleanJSONSchemaForAntigravity(jsonStr string) string {
// Phase 1: Convert and add hints
jsonStr = convertRefsToHints(jsonStr)
jsonStr = convertConstToEnum(jsonStr)
jsonStr = convertEnumValuesToStrings(jsonStr)
jsonStr = addEnumHints(jsonStr)
jsonStr = addAdditionalPropertiesHints(jsonStr)
jsonStr = moveConstraintsToDescription(jsonStr)
@@ -77,6 +78,33 @@ func convertConstToEnum(jsonStr string) string {
return jsonStr
}
// convertEnumValuesToStrings ensures all enum values are strings.
// Gemini API requires enum values to be of type string, not numbers or booleans.
func convertEnumValuesToStrings(jsonStr string) string {
for _, p := range findPaths(jsonStr, "enum") {
arr := gjson.Get(jsonStr, p)
if !arr.IsArray() {
continue
}
var stringVals []string
needsConversion := false
for _, item := range arr.Array() {
// Check if any value is not a string
if item.Type != gjson.String {
needsConversion = true
}
stringVals = append(stringVals, item.String())
}
// Only update if we found non-string values
if needsConversion {
jsonStr, _ = sjson.Set(jsonStr, p, stringVals)
}
}
return jsonStr
}
func addEnumHints(jsonStr string) string {
for _, p := range findPaths(jsonStr, "enum") {
arr := gjson.Get(jsonStr, p)