Unverified50% confidenceFactExact time
The Claude model itself does not execute any tools; the actual execution of tool functions is performed by the developer's Python code, and the permission boundaries and parameter validation are controlled by the developer.
1
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50%
Confidence
Long-term
Relevance
10/24/2026
First Seen
Sources
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Related Claims
UnverifiedIn tool calling, the model itself does not execute code but is only responsible for deciding which tool to call, while actual execution authority remains in the host program controlled by the developer.78% similarUnverifiedClaude never executes any tool itself; actual tool execution happens in an external host program, and computation happens in the caller's environment.71% similarUnverifiedIn Function Calling, functions are executed by the developer's code; the model itself does not execute the functions.67% similarUnverifiedThe model itself never runs code; it only writes out requests to call tools, and it is external code that actually executes the tools67% similarUnverifiedFunction Calling仅规定了如何触发调用，并未解决技能的封装格式、版本管理、跨框架复用等工程问题65% similar
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