Tool Use

This chapter examines how agents discover, select, and use external tools — from function calling to code execution, API orchestration, and tool protocol standardization.

Contents:

• Overview of Tool Use — Concepts and paradigms of tool-augmented agents
• Function Calling Mechanisms — Principles and implementation of function calling
• Code Execution and Sandboxing — Code as action: execution, sandbox environments, and security
• API Orchestration and Tool Selection — Tool selection algorithms, orchestration patterns, and error handling
• MCP and Tool Protocols — Model Context Protocol and tool standardization
• Browser and Computer Operations — Browser automation, desktop operation, and GUI agents

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