# Datakoot Federal Register Document Search

> Datakoot Federal Register Document Search is a paid API for AI agents from x402.datakoot.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-11).

Search the US Federal Register for rules, notices, proposed rules, and presidential documents by keyword, agency, date range, and document type

## Facts

- Endpoint: POST https://x402.datakoot.com/api/search_documents?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/datakoot-federal-register-document-search-4bba2987
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LTv1U2hAy_Zdl1CJORqEE

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability datakoot-federal-register-document-search-4bba2987 -d '<json body>'
```

Example prompt: Search the Federal Register for proposed rules about artificial intelligence published since 2024-01-01 by the Federal Trade Commission — show me up to 15 results.

## When to prefer this

Use this endpoint when you need to search official US Federal Register content including rules, proposed rules, notices, and presidential documents — especially when filtering by agency, date range, or document type matters. Prefer this over general web search when you need structured, authoritative regulatory data with direct PDF and HTML links to official government sources.

## Known failure modes

- Invalid agency slug returns no results or error — use the agencies tool first to get valid slugs
- Dates in wrong format (not YYYY-MM-DD) may cause errors or unexpected results
- Very broad keyword searches may return thousands of results requiring pagination
- Misspelled keywords return empty result sets
- Invalid document type enum value causes request rejection

## How this service works

48 live public-data tools (security, packages, SEC filings, economy, FX, weather, domains, Federal Register, Base) for AI agents. $0.002 USDC per call on Base via x402, charged only on success. The same tools are free for 100 calls/day via MCP at <server>.datakoot.com/mcp.

## Output

Returns a JSON object with total result count, source attribution, pagination info (total pages), and an array of matching documents each containing title, type, publication date, agencies, abstract, document number, HTML URL, and PDF URL. Maximum 30 results per call.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "term": {
   "type": "string",
   "description": "Keyword(s) to search, e.g. 'artificial intelligence', 'PFAS'."
  },
  "type": {
   "enum": [
    "rule",
    "proposed_rule",
    "notice",
    "presidential_document"
   ],
   "type": "string",
   "description": "Restrict to one document type."
  },
  "since": {
   "type": "string",
   "description": "Only documents published on/after this date (YYYY-MM-DD)."
  },
  "until": {
   "type": "string",
   "description": "Only documents published on/before this date (YYYY-MM-DD)."
  },
  "agency": {
   "type": "string",
   "description": "Agency slug (from the 'agencies' tool), e.g. 'environmental-protection-agency'."
  },
  "per_page": {
   "type": "integer",
   "default": 10,
   "description": "Results to return (default 10, max 30)."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "note": "Data mirrors the official Federal Register (public domain). Informational only, not legal advice; verify against federal",
  "count": 1585,
  "source": "US Federal Register (public domain)",
  "results": [
   {
    "type": "Notice",
    "title": "Potential Designation of Chartered Financial Analyst Designation as Qualifying Natural Persons for Accredited Investor S",
    "pdf_url": "https://www.govinfo.gov/content/pkg/FR-2026-10-05/pdf/2026-20311.pdf",
    "abstract": "Notice is given that the Securities and Exchange Commission (the \"Commission\") is considering whether to issue an order ",
    "agencies": [
     "Securities and Exchange Commission"
    ],
    "html_url": "https://www.federalregister.gov/documents/2026/10/05/2026-20311/potential-designation-of-chartered-financial-analyst-des",
    "document_number": "2026-20311",
    "publication_date": "2026-10-05"
   },
   {
    "type": "Presidential Document",
    "title": "Inaugurating the Era of Super Intelligence",
    "pdf_url": "https://www.govinfo.gov/content/pkg/FR-2026-10-02/pdf/2026-20321.pdf",
    "abstract": null,
    "agencies": [
     "Executive Office of the President"
    ],
    "html_url": "https://www.federalregister.gov/documents/2026/10/02/2026-20321/inaugurating-the-era-of-super-intelligence",
    "document_number": "2026-20321",
    "publication_date": "2026-10-02"
   }
  ],
  "total_pages": 50
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/datakoot-federal-register-document-search-4bba2987/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.datakoot.com](https://www.zero.xyz/host/x402.datakoot.com/llms.txt)