Tool Use

8 pages in this section.

How Function Calling Actually Works Under the Hood

Understand how function calling works. Learn the multi-message protocol, key concepts, and when to use this model for agent runtime design or debugging.

Python Tool Use Function Calling Explainer Function Calling

Tool Use & Function Calling Basics

Learn tool definitions, call-and-respond cycles, and argument validation with 10 Python examples. Understand tool schemas and agent loops.

Python Tool Use Function Calling Basics Function Calling

Writing Tool Descriptions the Model Will Actually Use Correctly

Learn to write effective tool descriptions and parameters for models. This guide covers naming conventions, description content, parameter documentation, and evaluation

Python Tool Use Function Calling Tool Descriptions Prompting

JSON Schema for Tool Parameters: A Reference Guide

Define tool input parameters using JSON Schema conventions for OpenAI-compatible APIs. Learn to build robust schemas with examples and best practices.

Python Tool Use Function Calling List Cheatsheet

Parallel Tool Calls: When and How Models Call Multiple Tools at Once

Python Tool Use Function Calling Explainer Advanced

Tool Search: Loading Tool Definitions On Demand Instead of Upfront

Python Tool Use Function Calling Advanced Tool Search

Handling Tool Errors Gracefully Inside an Agent Loop

Learn to handle tool errors in agent loops by catching failures, converting them to structured observations, and enforcing retry budgets for reliable AI.

Python Tool Use Function Calling Tool Errors Agent Loop

Tool Use & Function Calling Best Practices

Learn ten best practices for naming, describing, and scoping tools to ensure agents select them correctly and operate safely.

Python Tool Use Function Calling Best Practices List

Tool Use

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Tool Use