public-data-apis · prepared

Congress.gov API boundary

Official-source access, authentication, request-shaping, paging, freshness, legal, and interpretation boundaries for Congress.gov API.

version 1.0.0freshness currentobserved 2026-08-27T09:30:00Z

resource.public-data.congress-gov-api
sha256:3955854958dc473cab923c20eadd78d36f564ac63670caff98d70a192b6b3268

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Evidence-backed facts

  1. Congress.gov shares a versioned public API for machine-readable bills, amendments, laws, committees, members, nominations, treaties, and related legislative data. informative
  2. Requests require a free api.data.gov key, which must remain outside public assets and be subject to the service's documented limits. informative
  3. Clients must bind congress number, resource type, identifiers, update windows, format, limit, offset, and pagination links rather than infer a complete corpus from one list. informative
  4. Legislative metadata and text can change during the legislative process and do not replace authenticated official publications, enacted-law verification, or legal advice. informative

Primary sources

Congress.gov API

Library of Congress · observed 2026-08-27T09:30:00Z