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Category
Tool Calling

Tool Calling

Capabilitystable

The capability for a model or agent to select and invoke external functions, APIs, or tools as part of a workflow.

Introduction

Information

TypeCapability
Sourceplatform.openai.com
Published date2026/10/08

Categories

AI Agents
Agent Infrastructure

Tags

tool calling
tool use
structured output

Related Entities

S

Structured Outputs

Agent Infrastructure

Capabilitystable

Constrained model outputs that conform to a defined schema, making AI decisions easier to integrate into software.

structured output routing tool use

A

Agent Experience

Agent Infrastructure

Trendnew

Designing products, APIs, documentation, permissions, and workflows for AI agents as first-class users.

agent experience machine users authorization

A

Agent Payments

Agent Infrastructure

Trendnew

Payment and transaction infrastructure designed for software agents that can discover, buy, and pay autonomously.

agent payments machine users authorization

Tool calling lets a model or agent move beyond generating text and interact with external systems through structured function calls. It is one of the core capabilities behind practical agent workflows.