# Federal Register Recent Documents Feed

> Federal Register Recent Documents Feed is a paid API for AI agents from 2s.io, paid per call via x402, $0.0024/call, status unknown (last checked 2026-09-16).

Returns a chronological feed of recent Federal Register documents filterable by type, agency, and publication date range for compliance change-detection.

## Facts

- Endpoint: GET https://2s.io/api/gov/federal-register-recent
- Price: $0.0024/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/2s-io-373681ca
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1s93O04EmaDlbPFqYLca6

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 2s-io-373681ca
```

Example prompt: Pull the last 30 days of proposed rules from the Federal Register published by the environmental-protection-agency — show me up to 50 results starting from page 1.

## When to prefer this

Use this endpoint when you need a chronological feed of recent Federal Register documents for compliance monitoring, regulatory change detection, or research — especially when filtering by document type (final rules, proposed rules, notices, presidential documents) or by specific agency. Prefer this over general web search when you need structured, machine-readable regulatory metadata including effective dates and CFR citations.

## Known failure modes

- Invalid date format (not YYYY-MM-DD) returns a 400 error
- Agency slug not recognized returns empty results or 400
- Page number exceeding available results returns empty array
- Limit outside 1-100 range returns validation error
- date range with since > until may return empty results or error

## How this service works

Newest Federal Register documents by publication date — chronological feed for compliance change-detection. Filter by document type (RULE / PRORULE / NOTICE / PRESDOCU), agency name, and publication date range. Each record includes document number, type, title, abstract, publication date, effective date, agencies, citations (CFR/USC), HTML + PDF URLs. Defaults to last 7 days of final rules. Free public-domain data from federalregister.gov.

## Output

A paginated list of Federal Register documents matching the filters, each containing document number, type, title, abstract, publication date, effective date, issuing agencies, CFR/USC citations, and links to the full HTML and PDF versions on federalregister.gov.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "page": 1,
   "type": "RULE",
   "limit": 25,
   "since": "2024-11-17",
   "until": "2024-12-17",
   "agency": "environmental-protection-agency"
  }
 }
}
```

## 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",
    "queryParams"
   ],
   "properties": {
    "type": {
     "const": "http"
    },
    "method": {
     "const": "GET"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "page": {
       "type": "integer",
       "default": 1,
       "maximum": 1000,
       "minimum": 1,
       "description": "Page number (1-based). Default 1."
      },
      "type": {
       "enum": [
        "RULE",
        "PRORULE",
        "NOTICE",
        "PRESDOCU"
       ],
       "type": "string",
       "default": "RULE",
       "description": "Document type: RULE = final rules, PRORULE = proposed rules, NOTICE = notices, PRESDOCU = presidential docs."
      },
      "limit": {
       "type": "integer",
       "default": 25,
       "maximum": 100,
       "minimum": 1,
       "description": "Max results (1-100). Default 25."
      },
      "since": {
       "type": "string",
       "description": "Earliest publication date (YYYY-MM-DD). Default = 7 days ago."
      },
      "until": {
       "type": "string",
       "description": "Latest publication date (YYYY-MM-DD). Default = today."
      },
      "agency": {
       "type": "string",
       "maxLength": 80,
       "minLength": 2,
       "description": "Agency slug or name (e.g., \"environmental-protection-agency\", \"federal-trade-commission\")."
      }
     },
     "additionalProperties": false
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/2s-io-373681ca/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 2s.io](https://www.zero.xyz/host/2s.io/llms.txt)