research

Federal Register document search

Search newest U.S. Federal Register document metadata by topic, agency, type, and publication date, returning bounded regulatory notices, rules, proposed rules, presidential documents, and links to FederalRegister.gov and official govinfo.gov PDFs.

Price: $0.02 USDC via x402 exact payment on Base and Solana.

post/v1/research/federal-register-search

Request

  • Base URL: https://apiacre.com
  • URL: https://apiacre.com/v1/research/federal-register-search
  • Auth: none required

Request body

querystring nullable

Optional full-text Federal Register search term

agency_slugsstring[]

Optional exact FederalRegister.gov agency slugs, such as commerce-department

document_typesstring[]

Optional document types: RULE, PRORULE, NOTICE, or PRESDOCU

published_fromstring date nullable

Optional inclusive publication-date lower bound

published_tostring date nullable

Optional inclusive publication-date upper bound

max_resultsinteger

Maximum newest-first documents returned

Example request

{
  "query": "artificial intelligence",
  "agency_slugs": [
    "commerce-department"
  ],
  "published_from": "2026-01-01",
  "published_to": "2026-12-31"
}

Response

Successful Response

request_idstring required
servicestring required
versionstring
dataobject required

Changes

No recorded changes to this operation across all 1 revision of this API.