{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "title": "Active Symbols (request)",
  "description": "Retrieve a list of all currently active symbols (underlying markets upon which contracts are available for trading).",
  "type": "object",
  "auth_required": 0,
  "additionalProperties": false,
  "required": ["active_symbols"],
  "properties": {
    "active_symbols": {
      "description": "If you use `brief`, only a subset of fields will be returned.",
      "type": "string",
      "enum": ["full", "brief"]
    },
    "contract_type": {
      "description": "[Optional] The proposed contract type",
      "type": "array",
      "items": {
        "description": "",
        "type": "string",
        "enum": [
          "HIGHER",
          "LOWER",
          "MULTUP",
          "MULTDOWN",
          "UPORDOWN",
          "EXPIRYRANGE",
          "ONETOUCH",
          "CALLE",
          "ASIAND",
          "EXPIRYRANGEE",
          "DIGITDIFF",
          "DIGITMATCH",
          "DIGITOVER",
          "PUTE",
          "DIGITUNDER",
          "NOTOUCH",
          "CALL",
          "RANGE",
          "DIGITODD",
          "PUT",
          "ASIANU",
          "EXPIRYMISSE",
          "EXPIRYMISS",
          "DIGITEVEN",
          "TICKHIGH",
          "TICKLOW",
          "RESETCALL",
          "RESETPUT",
          "RUNHIGH",
          "RUNLOW",
          "ACCU",
          "VANILLALONGCALL",
          "VANILLALONGPUT",
          "TURBOSLONG",
          "TURBOSSHORT"
        ]
      }
    },
    "passthrough": {
      "description": "[Optional] Used to pass data through the websocket, which may be retrieved via the `echo_req` output field.",
      "type": "object"
    },
    "req_id": {
      "description": "[Optional] Used to map request to response.",
      "type": "integer"
    }
  }
}