# Regulations.gov API

**Canonical:** https://apis.io/apis/public-sector/regulationsgov-api/  
**Provider:** Public Sector — https://apis.io/providers/public-sector/  
**Base URL:** https://api.regulations.gov/v4  
**Documentation:** https://www.regulations.gov

Regulations.gov API is one of 21 APIs that [Public Sector](https://apis.io/providers/public-sector/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Federal, Regulations, Dockets, Documents, and Comments. The published artifact set on APIs.io includes API documentation and authentication docs.

The Regulations.gov v4 REST API exposes federal regulatory dockets, documents (Proposed Rules, Rules, Supporting & Related Material, Other), and public comments. Read endpoints follow api.data.gov rate-limit policies; the commenting endpoint is restricted to 50 requests per minute with a secondary limit of 500 requests per hour. Authentication uses an X-Api-Key header issued from api.data.gov, with DEMO_KEY available for testing.

## Machine-readable artifacts (3)

- **Portal** — https://www.regulations.gov
- **Documentation** — https://open.gsa.gov/api/regulationsgov/
- **Authentication** — https://api.data.gov/signup/

## Other Public Sector APIs (12)

- [api.data.gov](https://apis.io/apis/public-sector/apidatagov/)
- [data.gov (CKAN catalog)](https://apis.io/apis/public-sector/datagov-ckan-catalog/)
- [Federal Register API](https://apis.io/apis/public-sector/federal-register-api/)
- [GovInfo API](https://apis.io/apis/public-sector/govinfo-api/)
- [SAM.gov APIs](https://apis.io/apis/public-sector/samgov-apis/)
- [USAspending.gov API](https://apis.io/apis/public-sector/usaspendinggov-api/)
- [Treasury Fiscal Data API](https://apis.io/apis/public-sector/treasury-fiscal-data-api/)
- [Congress.gov API](https://apis.io/apis/public-sector/congressgov-api/)
- [FEC openFEC API](https://apis.io/apis/public-sector/fec-openfec-api/)
- [api.weather.gov (NOAA NWS)](https://apis.io/apis/public-sector/apiweathergov-noaa-nws/)
- [api.nasa.gov](https://apis.io/apis/public-sector/apinasagov/)
- [Census Data API](https://apis.io/apis/public-sector/census-data-api/)

## Tags

Federal, Regulations, Dockets, Documents, Comments, api.data.gov

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/public-sector/regulationsgov-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/public-sector/.