# 第八章 工具调用与能力扩展

大语言模型的能力有边界——它无法直接访问实时数据、执行代码或操作外部系统。**工具调用**（Tool Calling / Function Calling）机制打破了这一限制，让模型能够调用外部工具来扩展能力。

本章会探讨工具调用的机制、工具设计原则、执行与结果处理，以及 MCP 协议等工具标准化方案。工具调用是构建强大 AI 应用和智能体的基础能力。

## 本章内容

* [8.1 函数调用机制](/context_engineering_guide/di-san-bu-fen-jin-jie-ji-shu-yu-jia-gou/08_tools/8.1_function_calling.md)
* [8.2 工具定义与设计](/context_engineering_guide/di-san-bu-fen-jin-jie-ji-shu-yu-jia-gou/08_tools/8.2_tool_design.md)
* [8.3 工具执行与结果处理](/context_engineering_guide/di-san-bu-fen-jin-jie-ji-shu-yu-jia-gou/08_tools/8.3_tool_execution.md)
* [8.4 模型上下文协议与工具标准化](/context_engineering_guide/di-san-bu-fen-jin-jie-ji-shu-yu-jia-gou/08_tools/8.4_mcp_protocol.md)
* [本章小结](/context_engineering_guide/di-san-bu-fen-jin-jie-ji-shu-yu-jia-gou/08_tools/summary.md)


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