# nl-cm-kg.ai Public Record Lookup

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

Fetches a cryptographically signed public-record data snapshot for a named surface (market node, product, or estate-scale block) and returns an EdDSA-signed receipt resolvable at a permanent URL.

## Facts

- Endpoint: GET https://nl-cm-kg.ai/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/nl-cm-kg-ai-public-record-lookup-f6c275b1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oi6wkAFEC50LD0YjZ4c1k

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 nl-cm-kg-ai-public-record-lookup-f6c275b1
```

Example prompt: Fetch the signed public record for this market node on nl-cm-kg.ai and give me the EdDSA receipt URL I can use to verify it later.

## When to prefer this

Choose this endpoint when you need a cryptographically signed, permanently resolvable public-record snapshot from the nl-cm-kg.ai data surface — specifically for market nodes, product records, or estate-scale blocks — and require an EdDSA receipt for auditability or downstream verification. Prefer it over generic data APIs when tamper-evidence and a permanent receipt URL are required.

## Known failure modes

- Missing or invalid 'input' object returns a 400-level error
- Unsupported HTTP method (only GET/HEAD/DELETE accepted) returns a method-not-allowed error
- Payment not submitted or rejected results in a 402 Payment Required response
- Unknown surface type or node identifier may return an empty or 404 result
- Network timeout or service unavailability returns a 5xx error

## How this service works

One paid call on nl-cm-kg.ai 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://nl-cm-kg.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.

## Output

Returns a public-record data payload (e.g. a market node's list_nodes entry, a product record, or an estate-scale block), accompanied by an EdDSA-signed receipt and a nonce. The receipt is permanently resolvable at https://nl-cm-kg.ai/x402/receipt/{nonce}, providing a tamper-evident audit trail.

## 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/nl-cm-kg-ai-public-record-lookup-f6c275b1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nl-cm-kg.ai](https://www.zero.xyz/host/nl-cm-kg.ai/llms.txt)