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🔧 Tool Calling active v2.0

OpenAI Function Calling

by OpenAI
Schema-based tool invocation where models output structured JSON matching declared function signatures.

Key Features

  • json-schema
  • structured-output
  • functions

📄 Specification

Category 🔧 Tool Calling
Version2.0
MaintainerOpenAI
Status active
Sourceplatform.openai.com/docs/guides/function-calling

💻 Code Examples

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Discovered March 24, 2026
Last updated March 24, 2026