Transaction Assurance

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": "transaction_assurance",
    "arguments": {"transaction_id":"purchase-42","intent":{"buyer":"agent:buyer","seller":"agent:seller","network":"eip155:8453","asset":"USDC","max_amount":"15000","requested_at":1700000000,"deadline":4102444800},"offer":{"seller":"agent:seller","network":"eip155:8453","asset":"USDC","amount":"15000","valid_until":4102444800},"payment":{"settled":true,"network":"eip155:8453","asset":"USDC","amount":"15000","recipient":"agent:seller","transaction":"0xexample","settled_at":1700000001},"delivery":{"status":200,"delivered_at":1700000002,"content_sha256":"cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc","output":{"result":"ok"}},"acceptance":[{"path":"/result","operator":"equals","expected":"ok"}]}
  }
}

What the agent receives

Separate payment, delivery and acceptance verdicts, signed receipt and machine-readable dispute packet.

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