{
  "chain": "agentic-rail",
  "question": "Our agents pay supplier invoices over APIs. Which rail should carry a fifty-thousand-dollar machine-to-machine payment?",
  "look_at": "art-03-x402-settlement-modeler.recommended_rail",
  "try_changing": {
    "step": "art-03-x402-settlement-modeler",
    "field": "amount_usd",
    "value": 50000
  }
}