Agent Readiness

OpenAPI Specification

The dominant machine-readable contract for HTTP APIs. Presence of a public OpenAPI document — with examples, error schemas, security schemes, and rate-limit headers — is the single highest-leverage agent-readiness signal for a REST surface, because it gives an agent everything it needs to call the API without scraping HTML docs.

GitHub

Documentation

📖
Documentation
https://spec.openapis.org/oas/latest.html

SDKs

📦
GitHubRepository
https://github.com/OAI/OpenAPI-Specification

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Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
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API entry from apis.yml

apis.yml Raw ↑ 
aid: agent-readiness:openapi-initiative
name: OpenAPI Specification
tags:
- API Specification
- Agent Readiness
- Machine-Readable APIs
- Standards
humanURL: https://www.openapis.org
baseURL: https://spec.openapis.org
properties:
- url: https://spec.openapis.org/oas/latest.html
  type: Documentation
- url: https://github.com/OAI/OpenAPI-Specification
  type: GitHubRepository
description: The dominant machine-readable contract for HTTP APIs. Presence of a public OpenAPI document
  — with examples, error schemas, security schemes, and rate-limit headers — is the single highest-leverage
  agent-readiness signal for a REST surface, because it gives an agent everything it needs to call the
  API without scraping HTML docs.