fix: strip markdown code fences from LLM responses before JSON parsing#4627
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Anandesh-Sharma wants to merge 1 commit intocrewAIInc:mainfrom
Open
fix: strip markdown code fences from LLM responses before JSON parsing#4627Anandesh-Sharma wants to merge 1 commit intocrewAIInc:mainfrom
Anandesh-Sharma wants to merge 1 commit intocrewAIInc:mainfrom
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LLMs sometimes wrap JSON responses in markdown code fences like \`\`\`json ... \`\`\`, even when instructed to return valid JSON. This causes model_validate_json() to fail with a Pydantic ValidationError (e.g., "Invalid JSON: expected value at line 1 column 1"). Add _strip_code_fences() helper that extracts content from markdown code fence blocks before attempting JSON parsing, applied to both function-calling and non-function-calling converter paths. Fixes crewAIInc#4509 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
ValidationErrorwhen LLM returns JSON wrapped in markdown code fences (e.g.,```json ... ```)_strip_code_fences()helper that extracts content from markdown code fence blocks beforemodel_validate_json()Converter.to_pydantic()TaskEvaluationJSON in code fencesFixes #4509
Test plan
```json ... ```is correctly parsed``` ... ```(no language tag) is correctly parsed🤖 Generated with Claude Code