Summary
ToolGuard is a new Pytest-based tool designed to improve the reliability of AI agents by testing their tool calls. It addresses common issues like LLMs hallucinating JSON keys or passing incorrect data types, which often lead to agent crashes. ToolGuard achieves this by fuzzing Python tool functions with various edge cases, generating Pydantic schemas from type hints, and providing a reliability score without needing an LLM for testing.
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