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LLM reads tool descriptions and picks the best match. Description quality = correctness.
What you're seeing
Tool registry: list of tools with name, description, JSON schema for arguments. LLM reads all of them on every call and decides which to invoke.
Tool description quality is the #1 factor in tool-use accuracy. Vague descriptions → wrong tool picked. Specific descriptions + good few-shot examples → near-perfect dispatch.
★ KEY TAKEAWAY
LLM reads tool descriptions and picks the best match. Description quality = correctness.
▶ WHAT TO TRY
- Type a query and click Match tools.
- Best-matching tool turns green — that's what the LLM would call.