Congress.gov API

name: Congress.gov API
description: >
  The official REST API for the United States Congress, provided by the Library
  of Congress. It offers public access to machine-readable legislative data
  including bills, amendments, laws, committee reports, the Congressional
  Record, nominations, treaties, CRS reports, house votes, hearings, and
  member information. The API is free to use and requires a key obtained via
  the Data.gov signup page. Responses are available in JSON or XML format, with
  version 3 (v3) as the current release.
image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg
url: https://raw.githubusercontent.com/api-evangelist/congress-gov/refs/heads/main/apis.yml
created: "2026-06-13"
modified: "2026-06-13"
specificationVersion: "0.19"
aid: congress-gov
type: Index
tags:
  - Government
  - Legislative
  - Congress
  - Bills
  - Amendments
  - Members
  - Treaties
  - Nominations
  - Congressional Record
  - US Federal
apis:
  - name: Congress.gov API v3
    description: >
      Version 3 of the Congress.gov REST API, providing access to US
      legislative data including bills, amendments, laws, members, committees,
      committee reports, the Congressional Record, nominations, treaties, CRS
      reports, hearing records, house votes, and house/senate communications.
    image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg
    humanURL: https://api.congress.gov/
    baseURL: https://api.congress.gov/v3
    tags:
      - Bills
      - Amendments
      - Laws
      - Members
      - Committees
      - Congressional Record
      - Nominations
      - Treaties
      - CRS Reports
    properties:
      - type: Documentation
        url: https://github.com/LibraryOfCongress/api.congress.gov
      - type: OpenAPI
        url: https://api.congress.gov/
      - type: PostmanCollection
        url: https://documenter.getpostman.com/view/6803158/VV56LCkZ
      - type: GitHubRepository
        url: https://github.com/LibraryOfCongress/api.congress.gov
      - type: SignUp
        url: https://api.congress.gov/sign-up/
      - type: ChangeLog
        url: https://github.com/LibraryOfCongress/api.congress.gov/blob/main/ChangeLog.md
      - type: CoverageDates
        url: https://www.congress.gov/help/coverage-dates
      - type: DataOffsite
        url: https://www.congress.gov/help/using-data-offsite
      - type: ApiKeyInfo
        url: https://api.data.gov/docs/api-key/
      - type: Issues
        url: https://github.com/LibraryOfCongress/api.congress.gov/issues
      - type: Plans
        url: plans/congress-gov-plans-pricing.yml
      - type: RateLimits
        url: rate-limits/congress-gov-rate-limits.yml
      - type: FinOps
        url: finops/congress-gov-finops.yml
    contact:
      - FN: Library of Congress
        url: https://www.loc.gov/apis/additional-apis/congress-dot-gov-api/
        email: ""
common:
  - type: Website
    url: https://www.congress.gov/
  - type: Documentation
    url: https://github.com/LibraryOfCongress/api.congress.gov
  - type: GitHubOrg
    url: https://github.com/LibraryOfCongress
  - type: Blog
    url: https://blogs.loc.gov/law/
  - type: Pricing
    url: https://api.congress.gov/sign-up/
  - type: SignUp
    url: https://api.congress.gov/sign-up/
  - type: PostmanCollection
    url: https://documenter.getpostman.com/view/6803158/VV56LCkZ
  - type: ChangeLog
    url: https://github.com/LibraryOfCongress/api.congress.gov/blob/main/ChangeLog.md
  - type: Plans
    url: plans/congress-gov-plans-pricing.yml
  - type: RateLimits
    url: rate-limits/congress-gov-rate-limits.yml
  - type: FinOps
    url: finops/congress-gov-finops.yml
maintainers:
  - FN: Kin Lane
    email: [email protected]