{
  "x402_version": "1.0",
  "integration_status": "Legacy transaction-hash payment integration; standard x402 client interoperability is not certified",
  "title": "M2M Escrow Arbiter — Delivery Evidence Review",
  "description": "Deterministic delivery-evidence review and proposed escrow allocation for human review",
  "currency": "USD",
  "pricing_models": {
    "tier_1_sandbox": {
      "id": "tier-1-sandbox",
      "name": "Community Sandbox",
      "price": 0,
      "billing_scheme": "per_hour",
      "rate_limit": "50 queries/hour",
      "auth_required": false,
      "terms": "Evaluation only. Best-effort per-IP limit; no availability SLA."
    },
    "tier_2_pro": {
      "id": "tier-2-pro",
      "name": "Pro API Access",
      "price": 490,
      "billing_scheme": "monthly",
      "quota": "10,000 queries/month",
      "auth_required": true,
      "auth_type": "Bearer",
      "terms": "API access. Support, custom policies and any SLA require a separate written agreement."
    },
    "tier_micro_check": {
      "id": "tier-micro-check",
      "name": "Pre-sign evidence review",
      "price": 0.05,
      "billing_scheme": "per_call",
      "auth_required": true,
      "auth_type": "payer_signature",
      "signature_header": "X-Payment-Signature",
      "settlement_header": "X-Payment-Tx",
      "terms": "Local risk evaluation; no transaction authorization or sanctions clearance. Payment does not improve evidence quality or guarantee a receipt."
    },
    "tier_micro_dispute": {
      "id": "tier-micro-dispute",
      "name": "Escrow evidence review",
      "price": 0.5,
      "billing_scheme": "per_call",
      "auth_required": true,
      "auth_type": "payer_signature",
      "signature_header": "X-Payment-Signature",
      "settlement_header": "X-Payment-Tx",
      "terms": "Evidence evaluation only. No settlement execution or clearance receipt."
    },
    "tier_3_deal_dossier": {
      "id": "tier-3-dossier",
      "name": "Evidence Review Pilot",
      "price": 49,
      "pilot_price": 49,
      "billing_scheme": "per_deal",
      "terms": "Confirm scope and delivery date by email before payment. Human-reviewed evidence gaps; no legal opinion, certification or bank acceptance guarantee.",
      "deliverables": [
        "Source and evidence-gap review within agreed scope",
        "Human-review handoff; no guaranteed JWS attestation"
      ]
    },
    "tier_bankability_dossier": {
      "id": "tier-bankability-dossier",
      "name": "Corridor financial-model export",
      "price": 25,
      "billing_scheme": "per_deal",
      "terms": "Illustrative model export based on supplied assumptions; no lender approval or investment advice."
    }
  },
  "payment_rails": [
    {
      "method": "paypal",
      "name": "PayPal & Credit/Debit Card",
      "checkout_url": "https://paypal.me/vaskenzy/49USD",
      "contact": "vassiliy.lakhonin@gmail.com"
    },
    {
      "method": "direct_invoice",
      "supported_currencies": [
        "USD",
        "EUR",
        "KZT"
      ],
      "contact": "vassiliy.lakhonin@gmail.com"
    },
    {
      "method": "usdc_on_base",
      "name": "USDC on Base (Agentic Settlement)",
      "chain": "base",
      "chain_id": 8453,
      "asset": "USDC",
      "recipient_address": "0x5b5296A3a7bAc0F5F096F93b60C1c121f2e5c663",
      "settlement_endpoint": "/v1/settle",
      "settlement_header": "X-Payment-Tx",
      "signature_header": "X-Payment-Signature",
      "proof": "Funding-wallet EIP-191 signature of the exact request challenge",
      "result_recovery_hours": 24,
      "supported": true,
      "contact": "vassiliy.lakhonin@gmail.com"
    }
  ],
  "settlement_endpoint": "/v1/settle",
  "contact": "vassiliy.lakhonin@gmail.com",
  "x_agenda_access": {
    "authentication": "none",
    "base_call_price": "paid",
    "billing_mode": "pay_per_call",
    "discovery_is_free": true,
    "quota_per_hour": null,
    "quota_enforcement": "best_effort",
    "pricing_url": "https://m2m-escrow-arbiter-a2a.vassiliy-lakhonin.workers.dev/.well-known/x402",
    "on_quota_exceeded": "Wait for the next UTC hour or review optional paid access; do not pay automatically.",
    "payment_integration": "Legacy transaction-hash integration; standard x402 interoperability is not certified."
  },
  "pricing_scope": "Signed payment per evaluation; discovery and bankability preview are free."
}