# Federal Register Document Detail Lookup

> Federal Register Document Detail Lookup is a paid API for AI agents from oracles-production.up.railway.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Retrieves stored detail for a single Federal Register document by entity ID, or lists all tracked Federal Register entities.

## Facts

- Endpoint: GET https://oracles-production.up.railway.app/v1/reg-tax/status
- Price: $0.01/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-detail-lookup-ec14041e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ezsY-TUu-ZNfRD7UTkXGD

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-detail-lookup-ec14041e
```

Example prompt: Can you pull up the stored Federal Register document details for entity ID fedreg:2026-14090? I want to see what that regulation contains.

## When to prefer this

Use this endpoint when you have a specific Federal Register document entity ID (in the format 'fedreg:YYYY-NNNNN') and need to retrieve its stored details. Prefer this over live Federal Register API calls when you want fast, pre-stored results for tracked documents. Also use it without an ID to enumerate all tracked Federal Register entities in the system.

## Known failure modes

- Invalid or malformed entityId returns an error or empty result
- Entity ID not found in stored data returns null or 404-like response
- Omitting the 'id' query param returns a list instead of a single document — may be unexpected
- Payment not included or insufficient (x402 protocol) results in 402 Payment Required
- Rate limiting or service unavailability returns 5xx error

## How this service works

Full stored detail for a single federal tax rules & guidance rule by Federal Register document ID (e.g. 'fedreg:2026-14090') — title, issuing agency, rule type, effective date, and 1-10 compliance-impact score. Covers tax, internal revenue, deduction, credit, withholding.

## Output

Returns a JSON object containing stored detail for the specified Federal Register document entity, including regulatory metadata, document text or summary, and associated tax or rule information. If no ID is provided, returns a list of all tracked Federal Register entity IDs.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "id": {
       "type": "string",
       "description": "entityId to look up; omit to list tracked entities"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "entity": {
       "type": "object"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/federal-register-document-detail-lookup-ec14041e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from oracles-production.up.railway.app](https://www.zero.xyz/host/oracles-production.up.railway.app/llms.txt)