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US Government Federal Register Search (x402)
x402
US Government Federal Register Search (x402) is a paid API for AI agents from test5-x402-gov.stackstats.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-20).
Pay-per-call keyword search of US Federal Register documents via an unofficial proxy backed by federalregister.gov
Price / call$0.005
Success—
StatusUnknown
How this service works
Pay-per-call search of public US government data. Unofficial; verify at source. Provided AS IS with no warranty of any kind, express or implied, including accuracy, completeness, timeliness, merchantability or fitness for a particular purpose. Not affiliated with or endorsed by any U.S. government agency.
Output
Returns a JSON object containing a paginated list of Federal Register documents matching the search query, including each document's title, type (e.g. Notice, Rule, Proposed Rule), document number, publication date, HTML and PDF URLs, and associated agencies. Also includes total result count, total pages, cache status (hit/miss), the source URL used to fetch data, a disclaimer label, and a link to federalregister.gov API terms.
Example use cases
Compliance research on new regulations
“Search the Federal Register for any recent notices or proposed rules about 'PFAS drinking water standards' — show me up to 15 results on page 1.”
Tracking agency rulemaking activity
“Can you search the Federal Register for documents mentioning 'artificial intelligence federal agency' and pull back the first 10 results so I can see what rules are in the pipeline?”
Legal research on environmental policy
“Look up Federal Register documents related to 'methane emissions oil gas' — I need the titles, document numbers, and publication dates for the first page of results.”
Technical details
Endpoint
GEThttps://test5-x402-gov.stackstats.workers.dev/fedreg/search?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need keyword-based search across Federal Register documents (notices, proposed rules, final rules, executive orders) and want a simple pay-per-call interface without setting up your own federalregister.gov API integration. Prefer it for ad-hoc regulatory research, compliance monitoring, or legal discovery tasks where direct government API access isn't already configured. Not suitable when you need real-time guaranteed accuracy, bulk downloads, or structured access to other US government datasets beyond the Federal Register.
Side effects
- Missing required 'q' query parameter returns a validation error
- Query exceeding 200 characters may be rejected or truncated
- Page number outside 1-5 range returns an error
- limit outside 1-25 range returns a validation error
- Upstream federalregister.gov API unavailability causes failures
- Payment of $0.005 USDC not provided results in HTTP 402 response
- Results are unofficial and may lag or differ from the authoritative source
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"count": 4669,
"results": [
{
"type": "Notice",
"title": "Cybersecurity Measures for Surface Modes",
"html_url": "https://www.federalregister.gov/d/2026-12345",
"document_number": "2026-12345",
"publication_date": "2026-10-01"
}
],
"total_pages": 5
},
"cache": "miss",
"label": "Unofficial; verify at source",
"disclaimer": "Unofficial; verify at source. Provided AS IS with no warranty of any kind, express or implied, including accuracy, completeness, timeliness, merchantability or fitness for a particular purpose. Not affiliated with or endorsed by any U.S. government agency.",
"source_url": "https://www.federalregister.gov/api/v1/documents.json?per_page=1&page=1&conditions[term]=cybersecurity",
"source_terms": "https://www.federalregister.gov/reader-aids/developer-resources/rest-api"
}
}Tags
x402
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