{
  "tool_id": "art-26-x402-payload-decoder-flow-simulator",
  "kernel_id": "art-26-x402-payload-decoder-flow-simulator",
  "display_name": "x402 Header Decoder, Payload Linter & 402 Flow Simulator",
  "tool_version": "1.0.0",
  "mandate_type": "compliance_control",
  "purpose": "Decodes base64 PAYMENT-REQUIRED / PAYMENT-SIGNATURE / PAYMENT-RESPONSE headers, lints exact-scheme PaymentPayload (EIP-3009 style authorization fields), walks the HTTP-402 request/verify/settle flow, shows scheme×network matrix. Branch B, node 2 of the Agentic Rail Chain. Promoted from T277.",
  "control_description": "Decodes base64 PAYMENT-REQUIRED / PAYMENT-SIGNATURE / PAYMENT-RESPONSE headers, lints exact-scheme PaymentPayload (EIP-3009 style authorization fields), walks the HTTP-402 request/verify/settle flow, shows scheme×network matrix. Branch B, node 2 of the Agentic Rail Chain. Promoted from T277.",
  "declared_inputs": [
    "art-22-agentic-payments-protocol-comparator",
    "art-25-a2a-agent-card-validator"
  ],
  "declared_outputs": [
    "art-03-x402-settlement-modeler",
    "art-18-mcp-developer-readiness-scorecard",
    "ptg-01-ap2-prompt-template-generator"
  ],
  "kernel_digest": "sha256:6024a5a393fc85a6dfdaf2d0e7bce23482229351048eb26b68e6246d97ef6df7",
  "trust_label": "deferred -- deterministic source published, zkVM proof not yet generated",
  "data_vintage": "2026-07-10",
  "last_validated": "2026-07-10",
  "conformance_fixtures_vendored": false,
  "compute_proof_ready": "ready",
  "wave": "A",
  "source_url": "https://ainumbers.co/chaingraph/art-26-x402-payload-decoder-flow-simulator.html",
  "generated_at": "2026-07-25T20:02:55.601Z"
}