Check budget and approve/deny AI agent spending with x402 payment verification

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x60c402878EfcEcAe5733A88075328Aa2320C39BE",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "30000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "action_type": "x402_payment",
          "agent_id": "agent_001",
          "currency": "USDC",
          "requested_amount": 0.03,
          "target_api": "https://example.com/api/paid"
        },
        "bodyType": "json",
        "method": "POST",
        "type": "http"
      },
      "output": {
        "example": {
          "allow": true,
          "approval_required": false,
          "audit_status": "ready",
          "next_recommended": "proceed_with_x402_payment",
          "remaining_budget": 0.97,
          "risk_level": "low"
        },
        "type": "json"
      }
    },
    "schema": {
      "properties": {
        "allow": {
          "type": "boolean"
        },
        "approval_required": {
          "type": "boolean"
        },
        "audit_status": {
          "type": "string"
        },
        "next_recommended": {
          "type": "string"
        },
        "remaining_budget": {
          "type": "number"
        },
        "risk_level": {
          "type": "string"
        }
      },
      "type": "object"
    }
  }
}

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

const res = await fetch("https://agent-budget-guard.onrender.com/api/budget/check");
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://agent-budget-guard.onrender.com/api/budget/check")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header