OpenAI Function Calling Guide

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OpenAI·platform.openai.com/docs/guides/function-calling

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4/5

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High quality. Established institution or organization with editorial oversight and accountability.

Rating inherited from publication venue: OpenAI

Useful reference for understanding the technical mechanics of tool-augmented LLMs and AI agents; relevant to safety discussions about agentic systems, capability elicitation, and controlling model actions in real-world environments.

Metadata

Importance: 42/100documentationreference

Summary

Official OpenAI documentation explaining how to enable language models to call external functions and APIs, allowing structured outputs and integration with real-world tools. It covers how to define functions, pass them to models, and handle model-generated function call responses. This capability is central to building AI agents and tool-augmented systems.

Key Points

•Describes how to define functions in JSON schema format and pass them to GPT models so the model can decide when and how to call them.
•Enables AI models to interact with external systems, APIs, and data sources, forming the basis of agentic and tool-use architectures.
•Explains structured output generation, where models return machine-readable JSON rather than free text, improving reliability of downstream processing.
•Covers parallel function calling, allowing models to invoke multiple tools simultaneously for efficiency.
•Relevant to AI safety discussions around agentic systems, unintended side effects, and the challenge of specifying correct tool-use behavior.

Cited by 1 page

Page	Type	Quality
Tool Use and Computer Use	Capability	67.0

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