# LION Enrichment + TX Bundle (x402, keyless)

> LION Enrichment + TX Bundle (x402, keyless) is a paid API for AI agents from lion-x402.lionmaster-operations.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-12).

Returns a combined entity enrichment score and on-chain transaction receipt bundle for a named entity, paid per-call via x402 USDC on Base with no API key required.

## Facts

- Endpoint: GET https://lion-x402.lionmaster-operations.workers.dev/api/x402/enrichment-tx-bundle-json?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/lion-enrichment-tx-bundle-x402-keyless-a044c64a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_HMkFnxtrh83k8siX8fJ9V

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-enrichment-tx-bundle-x402-keyless-a044c64a
```

Example prompt: Pull the enrichment bundle for Coinbase — I want the attention score, momentum, and the decoded on-chain transaction receipt all in one shot, using the volume1000 discount tier.

## When to prefer this

Use this endpoint when an AI agent needs both entity-level enrichment signals (attention, momentum) AND on-chain transaction context in a single low-cost call, without managing API keys or subscriptions. Ideal for high-frequency research pipelines where per-call USDC micropayment via x402 is preferable to OAuth or key-based auth, especially when volume discounting matters.

## Known failure modes

- Payment not included or insufficient USDC — returns HTTP 402 with payment requirements
- Invalid or unsupported entity name — may return empty or null enrichment fields
- Network congestion on Base causing delayed tx receipt lookup
- Invalid volume tier parameter — falls back to default $0.005 rate
- Stale data if the as_of timestamp is significantly behind real-time

## How this service works

Keyless off-chain and on-chain data for AI agents. No API key, no signup - payment is the only gate. Pay-per-call in USDC on Base via x402.

## Output

A JSON object containing: entity name, attention score (0-1), momentum score, a decoded on-chain transaction receipt (to/from/status/gasUsed/blockNumber/decoded calldata), payment proof metadata, provenance hash with timestamp, combined price, and a disclaimer. Also includes the asset IDs for the enrichment and tx receipt components.

## 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": [
      "identifier"
     ],
     "properties": {
      "tx": {
       "type": "string",
       "description": "Optional Base tx hash"
      },
      "identifier": {
       "type": "string",
       "description": "Company or org name"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "tx": "0x91585d001b9761ce10d65c179bf5c6611d4d8221d4d0712b89f75de3113adb29",
  "note": "One $0.005 x402 payment (easy MCP) delivered both enrichment + tx context (one-call convenience). Volume tiered: pass ?volume=volume1000 for $0.003 rate. Lean, keyless, volume-optimized default for high-frequency agent research workloads.",
  "as_of": "2026-06-03T03:12:00.000Z",
  "entity": "Coinbase",
  "network": "eip155:8453",
  "asset_id": "LION_ENRICHMENT_TX_BUNDLE_001",
  "momentum": 0.15,
  "disclaimer": "Mechanical public signals + on-chain data only. Not advice.",
  "enrichment": {
   "entity": "Coinbase",
   "asset_id": "LION_ENTITY_ATTENTION_001",
   "momentum": 0.15,
   "attention_score": 0.82
  },
  "provenance": {
   "hash": "sha256:abc123...",
   "timestamp": "2026-06-03T04:05:00.000Z"
  },
  "tx_receipt": {
   "tx": "0x...",
   "receipt": {
    "to": "0x...",
    "from": "0x...",
    "value": "0x0",
    "status": "0x1",
    "gasUsed": "0x...",
    "blockNumber": "0x..."
   },
   "asset_id": "LION_TX_RECEIPT_DECODED_001",
   "decoded_calldata": {
    "sig": "transfer(address,uint256)",
    "params": [
     "0x...",
     "1000000000000000000"
    ]
   }
  },
  "payment_proof": {
   "payer": "0x...",
   "scheme": "exact",
   "tx_hash": "0x...",
   "settled_at": "2026-06-03T04:05:00.000Z",
   "facilitator": "https://api.cdp.coinbase.com/platform/v2/x402",
   "amount_settled": "5000"
  },
  "attention_score": 0.82,
  "combined_price_usdc": "0.005"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/lion-enrichment-tx-bundle-x402-keyless-a044c64a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from lion-x402.lionmaster-operations.workers.dev](https://www.zero.xyz/host/lion-x402.lionmaster-operations.workers.dev/llms.txt)