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fix(schema): remove Gemini-incompatible tool metadata fields

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Sanitize tool schemas by stripping prefill, enumTitles, $id, and patternProperties to prevent Gemini INVALID_ARGUMENT 400 errors, and add unit and executor-level tests to lock in the behavior.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Nathan
2026-02-11 18:29:17 +11:00
parent c6bd91b86b
commit 166d2d24d9
3 changed files with 213 additions and 2 deletions
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5
internal/util/gemini_schema.go
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@@ -428,8 +428,9 @@ func flattenTypeArrays(jsonStr string) string {
func removeUnsupportedKeywords(jsonStr string) string {
keywords := append(unsupportedConstraints,
"$schema", "$defs", "definitions", "const", "$ref", "additionalProperties",
"propertyNames", // Gemini doesn't support property name validation
"$schema", "$defs", "definitions", "const", "$ref", "$id", "additionalProperties",
"propertyNames", "patternProperties", // Gemini doesn't support these schema keywords
"enumTitles", "prefill", // Claude/OpenCode schema metadata fields unsupported by Gemini
)
deletePaths := make([]string, 0)