{
  "type": "object",
  "description": "Request body for database queries",
  "required": [
    "query"
  ],
  "properties": {
    "database": {
      "type": [
        "string",
        "null"
      ],
      "description": "Optional database name (primarily for SerenDB publishers)"
    },
    "params": {
      "type": "array",
      "items": {},
      "description": "Query parameters"
    },
    "query": {
      "type": "string",
      "description": "Query payload to execute.\n\n- SQL publishers (serendb/neon/supabase): SQL string\n- MongoDB publishers: JSON string matching `MongoDbQuery`"
    }
  }
}