1 ROOT node

Ap2 Mandate Chain Validator art-01-ap2-mandate-chain-validator

mandate signature-chain, scope/limit, and TTL verdict feeds Stage 2 agent token scope check against the same mandate

MCP Call · validate_ap2_mandate_chain

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "validate_ap2_mandate_chain",
    "arguments": {}
  },
  "id": 1
}

2 D2 node

Agent Token Scope Checker art-385-agent-token-scope-checker

in-scope / out-of-scope verdict and receipt feed Stage 3 chargeback evidence bundle composer as the mandate/receipt evidence group input

MCP Call · check_agent_token_scope

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "check_agent_token_scope",
    "arguments": {}
  },
  "id": 1
}

3 TERMINAL catalog tool

Chargeback Evidence Bundle Composer 567-chargeback-evidence-bundle-composer

assembles mandate-chain and scope verdicts with payment-protocol and session/delivery evidence into a hash-chained, Merkle-rooted adjudication bundle; terminal check

MCP Call · compose_chargeback_evidence_bundle

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "compose_chargeback_evidence_bundle",
    "arguments": {}
  },
  "id": 1
}

Agent Payment Dispute Evidence