# cm-kg.org Public Record Lookup

> cm-kg.org Public Record Lookup is a paid API for AI agents from cm-kg.org, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-13).

Fetches a signed public-record entry for a named surface (market node, product, or estate-scale block) and returns an EdDSA-signed receipt verifiable on-chain via a permanent nonce URL.

## Facts

- Endpoint: GET https://cm-kg.org/api?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cm-kg-org-public-record-lookup-5b16b56a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7mixSac_gSbIP8Nxuz1jC

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 cm-kg-org-public-record-lookup-5b16b56a
```

Example prompt: Pull the signed public record for the market node listed on cm-kg.org and give me the permanent receipt URL with the EdDSA signature so I can verify it.

## When to prefer this

Choose this endpoint when you need a cryptographically signed, permanently resolvable public-record lookup for a specific cm-kg.org surface (market node, product, or estate-scale block) and require an EdDSA receipt for auditability or downstream verification. Prefer it over generic web lookups when verifiable provenance and a permanent nonce receipt URL are required.

## Known failure modes

- Invalid or missing 'type' or 'method' fields in input returns a 400 error
- Requested surface or node identifier not found returns an empty or 404 response
- Payment of $0.01 USDC not completed returns a 402 Payment Required before data is served
- Nonce receipt URL may not resolve if the network is congested or the service is temporarily unavailable

## How this service works

One paid call on cm-kg.org for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://cm-kg.org/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.

## Output

A public-record payload for the requested surface (market node list_nodes line, product record of record, or estate-scale block), accompanied by an EdDSA-signed receipt that is permanently resolvable at https://cm-kg.org/x402/receipt/{nonce}.

## 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"
    }
   }
  },
  "output": {
   "type": "object"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cm-kg-org-public-record-lookup-5b16b56a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from cm-kg.org](https://www.zero.xyz/host/cm-kg.org/llms.txt)