Unverified90% confidenceFactTime unknown
工具在LangChain中被传递两次：传给Agent是为了让LLM了解工具的Schema，传给Executor是为了获取工具的实际函数引用
1
Sources
90%
Confidence
Long-term
Relevance
5/31/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedA tool-calling chain refers to the complete path along which an Agent calls external tools (such as search engines, database queries, code executors, etc.) in a certain sequence during task execution, where the output of each step may become the input of the next.72% similarUnverified当模型决定调用工具时会生成带tool_calls字段的AIMessage，工具执行结果以ToolMessage形式回传给模型形成工具调用闭环72% similarUnverifiedThe naming, description, and parameter documentation of a tool are the key context for an Agent to decide when to call it, and can be understood as a form of prompt engineering.71% similarUnverifiedAgents in Dify invoke external tools via Function Calling or Tool Use mechanisms, and their defining feature is the ability to call tools to complete complex instructions.71% similarUnverifiedThe Coze platform has pre-completed the engineering integration of tool descriptions and model adaptation, so users only need to check the required tools in the Agent settings for the underlying function calling mechanism to take effect automatically.69% similar
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