{
      "name": "agent-economy-payment-receipt",
      "domain": "Agent Economy",
      "title": "AP2 PaymentReceipt Verification & HNP Guardrail",
      "description": "W-B. PaymentReceipt-to-mandate verification + Human-Not-Present autonomy gate (ART-62) -> mandate-chain re-validation (art-01) -> receipt aggregation (cry-05). Verifies an autonomous AP2 payment after the fact: valid receipt, intact mandate chain, in-policy autonomy.",
      "composer_url": "https://ainumbers.co/chaingraph/chains/agent-economy-payment-receipt.html",
      "steps": [
        {
          "tool_id": "art-62-ap2-payment-receipt-verifier",
          "handoff": "receipt_verdict and hnp_verdict (H1) feed the mandate-chain validator"
        },
        {
          "tool_id": "art-01-ap2-mandate-chain-validator",
          "handoff": "mandate-chain verdict (H2) feeds the aggregator"
        },
        {
          "tool_id": "cry-05-agent-action-audit-trail-aggregator",
          "handoff": "Exports composite payment-receipt artifact with execution_hash (H3) -- final stage"
        }
      ]
    }