Verified65% confidenceDecision RuleExact time
The quality of a tool's description directly determines whether the model can select the correct tool; vague descriptions cause the model to call the wrong tool or pass incorrect parameters.
3
Sources
65%
Confidence
Long-term
Relevance
7/13/2026
First Seen
Sources
MCP协议详解：与Function Calling、Agent的关系及实践指南
bilibili六六科技笔记7/11/2026
Related Claims
UnverifiedA common mistake is making all functionality into Tools, which forces the model to select from a large number of tools and causes every tool description to consume tokens.77% similarUnverifiedThe quality of support for Tool Use/Function Calling varies enormously across different models, and many open-source models perform inconsistently in multi-turn tool calls and complex parameter parsing.76% similarUnverifiedTool support does not equal good tool use; some models that claim to support tool calling actually send malformed calls.76% similarUnverifiedThe same model can perform very differently across different tools; the model determines the system's lower bound while the Harness determines the upper bound of agent performance.74% similarUnverifiedSeparating tool definitions from models means that the same set of tools can serve different models.73% similar
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