eCFR · Open Collection

API Collection

Version
View on GitHub Raw JSON Federal RegulationsGovernmentLegalComplianceOpen DataUnited StatesOpen Collection

Overview

API Collection is a Open Collection published by eCFR on the APIs.io network.

Tagged areas include Federal Regulations, Government, Legal, Compliance, and Open Data.

Related API Specs

eCFR Admin Service API (OpenAPI) eCFR Search Service API (OpenAPI) eCFR Versioner Service API (OpenAPI)
Back to eCFR · All Collections · GitHub

Work with this as data

Every collection here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for collections

4 MCP tools reach this
  • find_collectionsBrowse and filter every collection in the catalog.
  • 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.
All 92 tools

Call it yourself

curl for this page
This collection 
curl "https://apis.io/api/v1/collections/open-.refine-report"
All collections 
curl "https://apis.io/api/v1/collections?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.