{
  "type": "object",
  "description": "Supported payment kind (from facilitator /supported endpoint)",
  "required": [
    "x402Version",
    "scheme",
    "network"
  ],
  "properties": {
    "extra": {
      "description": "Extra scheme-specific info"
    },
    "network": {
      "type": "string",
      "description": "Network in CAIP-2 format"
    },
    "scheme": {
      "type": "string",
      "description": "Payment scheme"
    },
    "x402Version": {
      "type": "integer",
      "format": "int32",
      "description": "x402 protocol version",
      "minimum": 0
    }
  }
}