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Tools · Function and Tool Calling

From tool-calling protocols and model training to schema engineering and reasoning-model integration.

Start with the call-and-result flow and schemas, then move to training and reasoning models. The examples' Chat Completions fields are not a universal standard; Responses, Claude, and other interfaces need their own adapters. Distinguish valid formatting, business correctness, and permission to execute.

Chapters

  1. Chapter 1: What Function Calling Is and How It Works
  2. Chapter 2: How LLMs Learn to Use Tools
  3. Chapter 3: Tool Definitions and Schema Engineering
  4. Chapter 7: Why Some Reasoning Models Seem Not to Support MCP

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