My agent called search() with `{"query": null}`. The error message I returned saved the next 30 minutes.

📰 Dev.to · Mukunda Rao Katta

Learn to build a Python wrapper that validates LLM tool-call arguments to reduce dead retries and improve model performance

intermediate Published 25 May 2026
Action Steps
  1. Build a Python wrapper to validate LLM tool-call arguments
  2. Implement input validation for the wrapper using Python's built-in validation functions
  3. Configure the wrapper to return an error hint shaped for the model to fix on the next turn
  4. Test the wrapper with different input scenarios to ensure its effectiveness
  5. Apply the wrapper to your existing LLM tool-call code to reduce dead retries
Who Needs to Know This

This benefits developers working with LLMs, as it reduces the time spent on debugging and improves the overall efficiency of the model. The team can use this wrapper to validate tool-call arguments and provide error hints for the model to fix on the next turn.

Key Insight

💡 Validating LLM tool-call arguments can significantly reduce dead retries and improve model performance

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💡 Reduce dead retries in LLMs with a Python wrapper that validates tool-call args and returns error hints

Key Takeaways

Learn to build a Python wrapper that validates LLM tool-call arguments to reduce dead retries and improve model performance

Full Article

A small Python wrapper that validates LLM tool-call args before execution, and on failure returns an error hint shaped for the model to fix on the next turn. Fewer dead retries.
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