SENTINEL pre-execution safety verdict

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xCf1d31020A7915421f6d66B9835Dcb6f422337E7",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "5000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "payTo": "0xCf1d31020A7915421f6d66B9835Dcb6f422337E7",
    "asset": "0xaf88d065e58a2e3789859b1b3622c0a25c81f19f",
    "amount": "5000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147wwSaGf",
    "payTo": "giu4VciTkfWJNG1oeP6SzHEJwmabikJSMB91GaFNWE4",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "5000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "example": {
          "chain": "base",
          "from_addr": "0xAGENT",
          "tx": {
            "data": "0x",
            "to": "0xCONTRACT",
            "value": "0x0"
          }
        },
        "method": "POST",
        "type": "http"
      },
      "output": {
        "example": {
          "risks": [],
          "signature": "base64...",
          "verdict": "SAFE"
        },
        "type": "json"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "properties": {
            "method": {
              "type": "string"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type",
            "method"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    },
    "serviceName": "SENTINEL",
    "tags": [
      "security",
      "safety",
      "agent",
      "x402",
      "pre-execution",
      "web3"
    ]
  }
}

curl "https://sentinel-agent.dev/v1/guard"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://sentinel-agent.dev/v1/guard");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

import httpx
res = httpx.get("https://sentinel-agent.dev/v1/guard")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header