Search the Federal Register by term API

Search US Federal Register documents (rules, proposed rules, notices, presidential documents) by search term with optional date range and type filter, normalized from the keyless federalregister.gov API into a flat schema (title, type, agencies, dates, abstract, citation, URL). Answers 'what federal rules mention X?','which notices were published about Y this month?'.

Price$0.01per request

MethodPOST

Route/v1/gov/fedreg-search

StatusLive

MIME typeapplication/json

Rate limit60/minute

Cache3600s public

govfederal-registerregulationsrulesnoticessearchcomplianceus

API URLhttps://x402.hexl.dev/v1/gov/fedreg-search

Integration docs

Example request

{
  "term": "artificial intelligence",
  "limit": 2
}

Example response

{
  "term": "artificial intelligence",
  "total": 842,
  "documents": [
    {
      "documentNumber": "2026-11181",
      "title": "Removing Unnecessary and Counterproductive Restrictions on Access to Federal Lands",
      "type": "Presidential Document",
      "abstract": null,
      "publicationDate": "2026-06-03",
      "signingDate": "2026-05-29",
      "effectiveOn": null,
      "agencies": [
        "Executive Office of the President"
      ],
      "citation": "91 FR 33577",
      "executiveOrderNumber": 14408,
      "president": "Donald Trump",
      "url": "https://www.federalregister.gov/documents/2026/06/03/2026-11181/removing-unnecessary-and-counterproductive-restrictions-on-access-to-federal-lands",
      "pdfUrl": null
    }
  ]
}

Input schema

{
  "type": "object",
  "required": [
    "term"
  ],
  "properties": {
    "term": {
      "type": "string",
      "examples": [
        "privacy",
        "artificial intelligence"
      ]
    },
    "publishedAfter": {
      "type": "string",
      "examples": [
        "2026-01-01"
      ]
    },
    "publishedBefore": {
      "type": "string",
      "examples": [
        "2026-06-01"
      ]
    },
    "type": {
      "type": "string",
      "examples": [
        "RULE",
        "PRORULE",
        "NOTICE"
      ]
    },
    "limit": {
      "type": "number",
      "minimum": 1,
      "maximum": 50,
      "default": 10
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}