# LION x402 Domain Intelligence (JSON)

> LION x402 Domain Intelligence (JSON) is a paid API for AI agents from lion-x402-bible.lionmaster-operations.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-16).

Returns attested domain intelligence data for a given asset or domain identifier, paid via x402 micropayment in USDC on Base.

## Facts

- Endpoint: GET https://lion-x402-bible.lionmaster-operations.workers.dev/api/x402/domain-intel-json
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/lion-x402-domain-intelligence-json-b7066c78
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WTuBOIuaJLCSw3cb1NDoU

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 lion-x402-domain-intelligence-json-b7066c78
```

Example prompt: Can you look up the domain intelligence for the asset with ID 'LION' using the LION x402 service and tell me if it resolves and what data comes back?

## When to prefer this

Choose this endpoint when you need keyless, cryptographically attested domain intelligence for a specific asset ID on Base, and your agent supports x402 micropayment flow with USDC. Prefer this over generic blockchain explorers when you need structured JSON attestation data rather than raw on-chain state, and when you want a pay-per-query model without API key management.

## Known failure modes

- Payment failure: x402 micropayment not processed or insufficient USDC balance — endpoint returns 402 Payment Required
- Invalid asset_id: unknown or malformed identifier returns resolved: false or an error object
- Network/worker failure: Cloudflare Worker unavailable returns 503 or timeout
- Rate limiting: excessive requests may be throttled by the worker
- Missing parameter: no asset_id provided may return a 400 Bad Request

## How this service works

Keyless attested data for autonomous agents. USDC on Base via x402. Official @x402/* middleware.

## Output

A JSON object containing at minimum an asset_id string and a resolved boolean indicating whether the domain intelligence lookup succeeded, along with any additional attested metadata associated with that asset identifier.

## 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",
     "required": [
      "domain"
     ],
     "properties": {
      "domain": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "asset_id": "LION",
  "resolved": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/lion-x402-domain-intelligence-json-b7066c78/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from lion-x402-bible.lionmaster-operations.workers.dev](https://www.zero.xyz/host/lion-x402-bible.lionmaster-operations.workers.dev/llms.txt)