# 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 entityId, or lists all tracked Federal Register entities.

## Facts

- Endpoint: GET https://oracles-production.up.railway.app/v1/reg-housing/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-85f950ad
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ueXi6sw1IMxYJl-UF94d9

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-85f950ad
```

Example prompt: Pull up the stored details for Federal Register document fedreg:2026-14090 — I need to see the full entity record for that regulatory entry.

## When to prefer this

Use this endpoint when you have a specific Federal Register document entityId (formatted as 'fedreg:XXXXXX') and need to retrieve its full stored detail record. Also use it to enumerate all tracked Federal Register entities when no id is supplied. Prefer this over broader regulatory search tools when you already know the exact entity identifier.

## Known failure modes

- Unknown or invalid entityId returns empty or not-found response
- Malformed entityId format (not matching 'fedreg:XXXX-XXXXX' pattern) may return an error
- Payment not processed results in 402 response
- Network or upstream service unavailability returns 5xx error

## How this service works

Full stored detail for a single housing & mortgage programs 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 housing, mortgage, hud, manufactured home, rental assistance.

## Output

Returns a JSON object containing the stored detail for the requested Federal Register document entity, including the entity object with document metadata. If no id is provided, returns a list of all tracked Federal Register entities.

## 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-85f950ad/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)