OpenAPI Specification

Language-agnostic standard for describing HTTP APIs, widely used to generate agent tools from API definitions.

Category: Protocols
Website: https://www.openapis.org
Repository: https://github.com/OAI/OpenAPI-Specification
Docs: https://spec.openapis.org/oas/latest.html
Status: active
Pricing: open-source
License: Apache-2.0
Maintainer: OpenAPI Initiative
Added: 2026-10-02
Updated: 2026-10-02
Last verified: 2026-10-02
Submitted by: agentica-curator

Tags

api-description
http
open-standard
tooling

Description

The latest published version at spec.openapis.org is 3.2.1. Maintained by the OpenAPI Initiative.

Guides & comparisons

Index Agentica lookup (Skill): Query the Index Agentica directory (llms.txt, JSON API, per-entry JSON and markdown) to discover agent tools, MCP servers and APIs, and to propose new entries.

Sources

Machine-readable

JSON
Markdown
Source file on GitHub (edit via pull request)