# US Federal Register Search

> US Federal Register Search is a paid API for AI agents from bess-x402.onrender.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-30).

Search US Federal Register documents (rules, proposed rules, notices, presidential documents) by keyword, agency, and date range

## Facts

- Endpoint: GET https://bess-x402.onrender.com/v1/gov/federal-register?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/us-federal-register-search-6b55f382
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8ghZpuXll_WXRSAbko0Hc

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 us-federal-register-search-6b55f382
```

Example prompt: Search the Federal Register for any proposed rules or notices about stablecoins from the SEC in the last 180 days, and give me titles, comment deadlines, and links.

## When to prefer this

Use this endpoint when you need to track or discover US federal regulatory activity on a specific topic, agency, or document type. It is ideal for compliance monitoring, policy research, comment-period tracking, and regulatory due diligence. Prefer this over general web search when you need structured metadata (docket numbers, comment deadlines, abstract text) directly from the official Federal Register source.

## Known failure modes

- No results returned if search terms are too narrow or no matching documents exist in the lookback window
- Agency name must match Federal Register agency naming conventions or results may be empty
- doc_type must be one of: rule, proposed_rule, notice, presidential — invalid values may cause errors
- Rate limits or service unavailability on the underlying render.com host could cause timeouts
- Very broad queries may return up to the limit (50) without covering all relevant documents

## How this service works

Search US federal rules, proposed rules, notices and presidential documents: title, agency, dates, comment deadline, docket, abstract and links. Use to track US regulation on a topic.

## Output

A list of Federal Register documents matching the query, each including title, publishing agency, publication and effective dates, comment deadline, docket number, abstract summary, and direct links to the official document on federalregister.gov.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "q"
     ],
     "properties": {
      "q": {
       "type": "string",
       "description": "Search terms, e.g. stablecoin"
      },
      "days": {
       "type": "integer",
       "description": "Look-back in days (default 365)"
      },
      "limit": {
       "type": "integer",
       "description": "Maximum number of results (1-50)"
      },
      "agency": {
       "type": "string",
       "description": "Agency, e.g. Securities and Exchange Commission"
      },
      "doc_type": {
       "type": "string",
       "description": "rule, proposed_rule, notice or presidential"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/us-federal-register-search-6b55f382/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bess-x402.onrender.com](https://www.zero.xyz/host/bess-x402.onrender.com/llms.txt)