Duplicate Charge Detector

Try before payment

Inspect a representative partial result, exact price and copy-ready upgrade instructions. No wallet, signature or payment required.

Copy-ready MCP call

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "duplicate_charge_detector",
    "arguments": {"charges":[{"network":"base","transaction":"tx1","recipient":"seller","amount":"3000"}]}
  }
}

What the agent receives

Duplicate findings, charge-set hash and bounded interpretation.

No API key or subscription. The first paid request returns HTTP 402 payment requirements; an x402 client signs and retries automatically.