# x402stock Regulatory Documents Search

> x402stock Regulatory Documents Search is a paid API for AI agents from x402stock.xyz, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-21).

Search and retrieve US federal regulatory documents (rules, notices, proposed rules, presidential actions) from the Federal Register, filterable by agency and document type

## Facts

- Endpoint: GET https://x402stock.xyz/api/v1/regulatory?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402stock-regulatory-documents-search-861d43ba
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NjymA86AFMdK9ssfxHPOf

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 x402stock-regulatory-documents-search-861d43ba
```

Example prompt: Pull the 20 most recent SEC notices and proposed rules from the Federal Register so I can see what regulatory changes are in the pipeline for securities markets.

## When to prefer this

Use this endpoint when you need to monitor or search US federal regulatory documents from the Federal Register, especially for compliance monitoring, tracking SEC/CFTC/FDA rule changes, or researching government notices. Prefer this over general web search when you need structured, machine-readable regulatory data with metadata like effective dates, document numbers, and agency attribution. Ideal for AI agents that need no API key setup — just pay 0.02 USDC per call via x402 on Base.

## Known failure modes

- Invalid document type enum value returns 400 error
- Agency name not matching Federal Register slug returns empty results
- Limit exceeding 100 returns validation error
- Query string too short (under 2 chars) or too long (over 120 chars) returns validation error
- Payment of 0.02 USDC not included or insufficient funds returns 402 Payment Required
- Federal Register upstream unavailability returns 503 or timeout

## How this service works

Proposed/final rules and notices from a federal agency — the regulatory pipeline that reprices sectors. Pass `?agency=securities-and-exchange-commission` (slug) and/or `?q=` (at least one), plus `?type=all|rule|proposed|notice` and `?limit=` (max 100). Each doc has number, type, title, abstract, dates, agencies, and a link. From x402stock, a market & economic data API (x402, USDC).

## Output

Returns a JSON object with source attribution (Federal Register), timestamp, matched document count, and an array of regulatory documents each containing document number, type (rule/notice/proposed/presidential), title, abstract, publication date, effective date, list of agencies, and a direct URL to the full Federal Register entry.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "$schema": "https://json-schema.org/draft/2020-12/schema",
     "required": [
      "type",
      "limit"
     ],
     "properties": {
      "q": {
       "type": "string",
       "maxLength": 120,
       "minLength": 2
      },
      "type": {
       "enum": [
        "all",
        "rule",
        "proposed",
        "notice",
        "presidential"
       ],
       "type": "string",
       "default": "all"
      },
      "limit": {
       "type": "integer",
       "default": 20,
       "maximum": 100,
       "exclusiveMinimum": 0
      },
      "agency": {
       "type": "string",
       "maxLength": 120,
       "minLength": 2
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "$schema": "https://json-schema.org/draft/2020-12/schema",
     "required": [
      "source",
      "as_of",
      "agency",
      "query",
      "type",
      "total_matched",
      "count",
      "documents",
      "attribution"
     ],
     "properties": {
      "type": {
       "type": "string"
      },
      "as_of": {
       "type": "string"
      },
      "count": {
       "type": "number"
      },
      "query": {
       "anyOf": [
        {
         "type": "string"
        },
        {
         "type": "null"
        }
       ]
      },
      "agency": {
       "anyOf": [
        {
         "type": "string"
        },
        {
         "type": "null"
        }
       ]
      },
      "source": {
       "type": "string",
       "const": "federal_register"
      },
      "documents": {
       "type": "array",
       "items": {
        "type": "object",
        "required": [
         "document_number",
         "type",
         "title",
         "abstract",
         "publication_date",
         "effective_on",
         "agencies",
         "url"
        ],
        "properties": {
         "url": {
          
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "type": "all",
  "as_of": "2026-06-18T12:00:00.000Z",
  "count": 1,
  "query": null,
  "agency": "securities-and-exchange-commission",
  "source": "federal_register",
  "documents": [
   {
    "url": "https://www.federalregister.gov/documents/2026/06/18/2026-12261/self-regulatory-organizations-nyse-american-llc",
    "type": "Notice",
    "title": "Self-Regulatory Organizations; NYSE American LLC; Notice of Filing and Immediate Effectiveness of a Proposed Rule Change",
    "abstract": null,
    "agencies": [
     "Securities and Exchange Commission"
    ],
    "effective_on": null,
    "document_number": "2026-12261",
    "publication_date": "2026-06-18"
   }
  ],
  "attribution": "Source: Federal Register (U.S. National Archives, Office of the Federal Register)",
  "total_matched": 10000
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402stock-regulatory-documents-search-861d43ba/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402stock.xyz](https://www.zero.xyz/host/x402stock.xyz/llms.txt)