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Why do my LangChain agents sometimes hallucinate tool calls, and how can I write better system prompts to enforce strict adherence to available functions?

ChatGPTgpt-61 query11/1/2026
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SEED QUERY
Why do my LangChain agents sometimes hallucinate tool calls, and how can I write better system prompts to enforce strict adherence to available functions?
1 real search · 1 real-search pass
LangChain agents tool calling documentation tools schemas invalid tool calls hallucinated tool namesGoogle ↗
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ChatGPT1 real searches · gpt-6
LangChain agents tool calling documentation tools schemas invalid tool calls hallucinated tool names Google ↗

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Query / typeSearchIntentQuery classRouting formatClusterFreq ↓Weight
LangChain agents tool calling documentation tools schemas invalid tool calls hallucinated tool names
OBSERVED
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