# Federal Register Document Metadata Lookup

> Federal Register Document Metadata Lookup is a paid API for AI agents from proxy.suverse.io, paid per call via x402, $0.055/call, status unknown (last checked 2026-09-14).

Fetches full metadata for a single US Federal Register document by document number, including title, abstract, action type, publishing agencies, and effective dates.

## Facts

- Endpoint: POST https://proxy.suverse.io/v1/data/suverse-regulatory-fedreg-doc
- Price: $0.055/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/federal-register-document-metadata-lookup-a5cad952
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9pfIhimm0GFjxBe64WI_T

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 federal-register-document-metadata-lookup-a5cad952 -d '<json body>'
```

Example prompt: Can you pull up the full metadata for Federal Register document 2024-05321 — I need the title, abstract, publishing agency, and effective date?

## When to prefer this

Use this endpoint when you need detailed metadata for a specific, known Federal Register document number — particularly when you need title, abstract, agency attribution, and effective dates in one call. Prefer this over general search endpoints when you already have the document number. It is purpose-built for regulatory tracking, compliance workflows, and government document research without requiring an API key.

## Known failure modes

- Invalid or nonexistent document number returns an error or empty result
- Malformed document number format may cause a 400 or API-level rejection
- Network or upstream Federal Register API downtime returns a 5xx error
- Payment failure via x402 protocol prevents request from being processed

## How this service works

Fetch full metadata for one Federal Register document by document number: title, abstract, action, publishing agencies and effective dates. Official US Federal Register API. Useful for tracking specific rules, notices and presidential documents.

## Output

Returns structured metadata for the specified Federal Register document, including: document title, abstract summary, action type (rule, notice, presidential document, etc.), the government agencies that published it, and relevant dates such as the effective date and publication date.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "properties": {}
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "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/federal-register-document-metadata-lookup-a5cad952/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from proxy.suverse.io](https://www.zero.xyz/host/proxy.suverse.io/llms.txt)