Expired80% confidenceFactExact time
Tool Use (also known as Function Calling) is a core capability of modern large language models.
10
Sources
80%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
Complete Guide to MCP Protocol in Claude Code: Configuration, Management, and Context Optimization
bilibilibili_brook6/7/2026
Related Claims
UnverifiedFunction Calling (Tool Use) is a standardized mechanism for large models to invoke external tools, where developers pre-declare tool names, descriptions, and parameter schemas, and the model autonomously determines when to make a call.85% similarUnverifiedThe Skill feature can only be used with large models that support Function Call.76% similarUnverifiedThe tool-calling (Function Calling / Tool Use) capability enables LLMs to output structured intent instructions, which are captured by an external execution layer to actually operate on systems.75% similarUnverifiedPlanning capability relies on large language model Chain-of-Thought (CoT) reasoning, tool invocation is implemented via Function Calling or plugin mechanisms, and the orchestration layer plays the role of a workflow engine.72% similarUnverifiedTool calls need to be wrapped using the ToolNode class provided by LangGraph, while ordinary large model calls can use functions directly.71% similar
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