{
  "tool_id": "art-46-arc-paymaster-model",
  "mcp_name": "model_arc_paymaster_economics",
  "policy_parameters": {
    "gas_per_uop": 150000,
    "gas_price_gwei": 30,
    "eth_price_usd": 3500,
    "arc_usdc_per_gas_unit": 0.000001,
    "monthly_uops": 50000,
    "merchant_sponsorship_pct": 80,
    "impl_months": 3
  },
  "_fixture_note": "ETH cost: 150k*30gwei*1e-9*$3500=$15.75/UOp. Arc full: 150k*$0.000001=$0.15/UOp. Saving $15.60/UOp, 50k UOps/mo => $780k/mo => $9.36M/yr. Impl $36k. Break-even <1 month. Verdict: MIGRATE. 80% sponsorship => ERC4337_MERCHANT_SPONSORSHIP_ACTIVE.",
  "expected_output_payload": {
    "verdict": "MIGRATE",
    "compliance_flags": [
      "ARC_PAYMASTER_MIGRATION_RECOMMENDED",
      "ERC4337_MERCHANT_SPONSORSHIP_ACTIVE"
    ]
  },
  "expected_execution_hash": "sha256:d611bce714eb46fa533464a0bd9147e5b7cad0e8d9e1d29fa317ddd2b24b4908"
}