How do you prevent an agent from hallucinating tool parameters?

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Accepted Answer

Preventing an agent from hallucinating tool parameters primarily involves providing clear, unambiguous tool definitions and implementing strict schema validation for all tool calls. This means explicitly defining expected parameter types, ranges, and any enumerated values, often through a JSON schema or similar specification. Additionally, furnishing the agent with high-quality, diverse few-shot examples demonstrating correct tool usage significantly reduces the likelihood of fabrication. Robust input pre-processing and runtime validation of generated parameters against the defined schema are crucial steps to catch and correct invalid outputs before execution. Implementing effective error handling that provides specific, corrective feedback to the agent when an invalid tool call is attempted further refines its understanding and adherence to parameter constraints.