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How to eliminate the problem of JSON formatting errors in LLM function calls?

2025-08-19 412
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Langroid resolves JSON formatting errors through the following mechanism:

  • Pydantic Integration: Strictly define the structure of the Tool/function using the Pydantic model
  • ToolMessage mechanism: Provide a unified tool call interface for all LLMs
  • error handling: The framework automatically catches formatting issues and re-prompts LLM

Specific implementation method: the developer only needs to inherit theToolMessageClass definition tool , the framework will handle the underlying JSON generation and parsing . When LLM generates the wrong JSON , the system will automatically launch a repair request , greatly reducing the developer's debugging workload .

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