{
  "tool_id": "art-42-arc-fit-diagnostic",
  "mcp_name": "run_arc_fit_diagnostic",
  "policy_parameters": {
    "q1_cpn_connectivity": "yes",
    "q2_corridor_volume": "yes",
    "q3_settlement_cutoff_pain": "yes",
    "q4_fx_margin_pressure": "yes",
    "q5_herstatt_exposure": "partial",
    "q6_24_7_settlement_need": "no",
    "q7_dvp_trade_type": "no",
    "q8_usyc_collateral_interest": "no",
    "q9_prefunding_cost": "no",
    "q10_agent_payment_volume": "partial",
    "q11_gas_sensitivity": "yes",
    "q12_x402_ap2_adoption": "no"
  },
  "_fixture_note": "CPN dim=12, StableFX dim=6, DvP dim=0, Commerce dim=6. Total=24/48=50%. Grade C. Primary=cpn (highest, tie-break cpn>stablefx). CCTP fires (3 dims with score>0 ≥2). compliance_flags=[ARC_PARTIAL_FIT, CCTP_ROUTING_RECOMMENDED].",
  "expected_output_payload": {
    "verdict": "C",
    "total_score": 24,
    "total_max": 48,
    "total_pct": 50,
    "primary_chain": "arc-cpn-payment",
    "primary_dim": "cpn",
    "cctp_branch": true,
    "compliance_flags": [
      "ARC_PARTIAL_FIT",
      "CCTP_ROUTING_RECOMMENDED"
    ]
  },
  "expected_execution_hash": "sha256:9d67f24ecdc2097d2a78f9ada4aac4b58fd0a533f91345dd76344cb78fde08f5"
}