curl --request GET \
  --url https://api.example.com/api/v1/config/environment

{
  "code": 0,
  "msg": "ok",
  "data": {
    "environment": "prod",
    "testnetOnly": true,
    "supportedChainIds": [
      8453,
      11155111
    ],
    "buildVersion": "1.0.0",
    "featureFlags": {
      "balancesEnabled": true,
      "historyEnabled": true,
      "contractsEnabled": true,
      "adminWriteEnabled": false
    },
    "announcement": {
      "enabled": false,
      "level": "info",
      "title": "",
      "message": ""
    },
    "maintenance": {
      "enabled": false,
      "reason": ""
    }
  }
}