Gate.io Options WebSocket v4

Gate.io provides a simple and robust Websocket API to integrate gate.io options underlying trade status into your business or application.

We have language bindings in Python, more in the future! You can view code examples in the dark area to the right, and you can switch the programming language of the examples with the tabs in the top right.

Server URL

We provide underlying trade server urls, you can choose one of them according to your condition.

Base URLs:

• Real Trading: wss://op-ws.gateio.live/v4/ws

• TestNet: wss://op-ws-testnet.gateio.live/v4/ws

Changelog

# !/usr/bin/env python
# coding: utf-8

import hashlib
import hmac
import json
import logging
import time

from websocket import WebSocketApp

logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)


class GateWebSocketApp(WebSocketApp):

   def __init__(self, url, api_key, api_secret, **kwargs):
      super(GateWebSocketApp, self).__init__(url, **kwargs)
      self._api_key = api_key
      self._api_secret = api_secret

   def _send_ping(self, interval, event, payload):
      while not event.wait(interval):
         self.last_ping_tm = time.time()
         if self.sock:
            try:
               self.sock.ping(payload)
            except Exception as ex:
               logger.warning("send_ping routine terminated: {}".format(ex))
               break
            try:
               self._request("options.ping", auth_required=False)
            except Exception as e:
               raise e

   def _request(self, channel, event=None, payload=None, auth_required=True):
      current_time = int(time.time())
      data = {
         "time": current_time,
         "channel": channel,
         "event": event,
         "payload": payload,
      }
      if auth_required:
         message = 'channel=%s&event=%s&time=%d' % (channel, event, current_time)
         data['auth'] = {
            "method": "api_key",
            "KEY": self._api_key,
            "SIGN": self.get_sign(message),
         }
      data = json.dumps(data)
      logger.info('request: %s', data)
      self.send(data)

   def get_sign(self, message):
      h = hmac.new(self._api_secret.encode("utf8"), message.encode("utf8"), hashlib.sha512)
      return h.hexdigest()

   def subscribe(self, channel, payload=None, auth_required=True):
      self._request(channel, "subscribe", payload, auth_required)

   def unsubscribe(self, channel, payload=None, auth_required=True):
        self._request(channel, "unsubscribe", payload, auth_required)


def on_message(ws, message):
    # type: (GateWebSocketApp, str) -> None
    # handle message received
    logger.info("message received from server: {}".format(message))


def on_open(ws):
    # type: (GateWebSocketApp) -> None
    # subscribe to channels interested
    logger.info('websocket connected')
    ws.subscribe("options.contract_tickers", ['BTC_USDT-20211231-59800-C'], False)


if __name__ == "__main__":
    logging.basicConfig(format="%(asctime)s - %(message)s", level=logging.DEBUG)
    app = GateWebSocketApp("wss://op-ws.gateio.live/v4/ws",
                           "YOUR_API_KEY",
                           "YOUR_API_SECRET",
                           on_open=on_open,
                           on_message=on_message)
    app.run_forever(ping_interval=5)

package main

import (
	"crypto/hmac"
	"crypto/sha512"
	"crypto/tls"
	"encoding/hex"
	"encoding/json"
	"fmt"
	"io"
	"net/url"
	"time"

	"github.com/gorilla/websocket"
)

type Msg struct {
	Time    int64    `json:"time"`
	Channel string   `json:"channel"`
	Event   string   `json:"event"`
	Payload []string `json:"payload"`
	Auth    *Auth    `json:"auth"`
}

type Auth struct {
	Method string `json:"method"`
	KEY    string `json:"KEY"`
	SIGN   string `json:"SIGN"`
}

const (
	Key    = "YOUR_API_KEY"
	Secret = "YOUR_API_SECRETY"
)

func sign(channel, event string, t int64) string {
	message := fmt.Sprintf("channel=%s&event=%s&time=%d", channel, event, t)
	h2 := hmac.New(sha512.New, []byte(Secret))
	io.WriteString(h2, message)
	return hex.EncodeToString(h2.Sum(nil))
}

func (msg *Msg) sign() {
	signStr := sign(msg.Channel, msg.Event, msg.Time)
	msg.Auth = &Auth{
		Method: "api_key",
		KEY:    Key,
		SIGN:   signStr,
	}
}

func (msg *Msg) send(c *websocket.Conn) error {
	msgByte, err := json.Marshal(msg)
	if err != nil {
		return err
	}
	return c.WriteMessage(websocket.TextMessage, msgByte)
}

func NewMsg(channel, event string, t int64, payload []string) *Msg {
	return &Msg{
		Time:    t,
		Channel: channel,
		Event:   event,
		Payload: payload,
	}
}

func main() {
	u := url.URL{Scheme: "wss", Host: "op-ws.gateio.live", Path: "/v4/ws"}
	websocket.DefaultDialer.TLSClientConfig = &tls.Config{RootCAs: nil, InsecureSkipVerify: true}
	c, _, err := websocket.DefaultDialer.Dial(u.String(), nil)
	if err != nil {
		panic(err)
	}
	c.SetPingHandler(nil)

	// read msg
	go func() {
		for {
			_, message, err := c.ReadMessage()
			if err != nil {
				c.Close()
				panic(err)
			}
			fmt.Printf("recv: %s\n", message)
		}
	}()

	t := time.Now().Unix()
	pingMsg := NewMsg("options.ping", "", t, []string{})
	err = pingMsg.send(c)
	if err != nil {
		panic(err)
	}

	// subscribe order book
	orderBookMsg := NewMsg("options.order_book", "subscribe", t, []string{"BTC_USDT-20211231-59800-C"})
	err = orderBookMsg.send(c)
	if err != nil {
		panic(err)
	}

	// subscribe positions
	positionsMsg := NewMsg("options.positions", "subscribe", t, []string{"USERID", "BTC_USDT-20211231-59800-C"})
	positionsMsg.sign()
	err = positionsMsg.send(c)
	if err != nil {
		panic(err)
	}

	select {}
}

2021-12-28

• Initial release

API Overview

Method

Each general api (such as ticker, order book etc.) supports 4 different event messages, they are:

1. subscribe (RECOMMENDED TO USE)

   Subscribe to receive notification from server when new data is available.

2. unsubscribe

   Server will not send new data notification if unsubscribed.

3. update

   If new subscribed data(incremental data) is available, server will send a notification to client.

4. all

   If new subscribed data(all data) is available, server will send a notification to client.

Request

Each request follows a common format, which contains time, channel, event and payload.

parameter	type	required	description
time	Integer	Yes	request time
channel	String	Yes	request subscribe/unsubscribe channel
auth	String	no	request auth info, see Authentication section for details
event	String	Yes	request event (subscribe/unsubscribe/update/all)
payload	Array	Yes	request detail parameters

Response

Similar with request, response follows a common format composed of time, channel, event , error and result.

Field	type	required	description
time	Integer	Yes	response time
channel	String	Yes	response channel
event	String	Yes	response channel event (update/all)
error	Object	Yes	response channel event (update/all)
result	Array	Yes	response detail parameters

Error

In case of error, you receive a message containing the proper error code and message within an error object.

Code	Message
1	invalid argument struct
2	invalid argument
3	service error

Authentication

WARNING

Note: the GateAPIv4 key pair you used MUST have at least options read permission enabled, and your outbound IP address must be in the key's IP whitelist if its whitelist is enabled.

# example WebSocket signature calculation implementation in Python
import hmac, hashlib, json, time


def gen_sign(channel, event, timestamp):
    # GateAPIv4 key pair
    api_key = 'YOUR_API_KEY'
    api_secret = 'YOUR_API_SECRET'

    s = 'channel=%s&event=%s&time=%d' % (channel, event, timestamp)
    sign = hmac.new(api_secret.encode('utf-8'), s.encode('utf-8'), hashlib.sha512).hexdigest()
    return {'method': 'api_key', 'KEY': api_key, 'SIGN': sign}


request = {
    'id': int(time.time() * 1e6),
    'time': int(time.time()),
    'channel': 'options.orders',
    'event': 'subscribe',
    'payload': ["1001", "BTC_USDT-20211231-59800-C"]
}
request['auth'] = gen_sign(request['channel'], request['event'], request['time'])
print(json.dumps(request))

Client requests need to carry authentication information if channels are private, e.g. options.orders channel to retrieve user orders update.

Authentication are sent by auth field in request body with the following format:

Field	Type	Description
method	String	Authentication method. Currently only one method api_key is accepted
KEY	String	Gate APIv4 user key string
SIGN	String	Authentication signature generated using GateAPIv4 secret and request information

WebSocket authentication uses the same signature calculation method with Gate APIv4 API, i.e., HexEncode(HMAC_SHA512(secret, signature_string)), but has the following differences:

1. Signature string concatenation method: channel=<channel>&event=<event>&time=<time>, where <channel>, <event>, <time> are corresponding request information
2. Authentication information are sent in request body in field auth.

You can log into the console to retrieve Gate APIv4 key and secret.

System API

System APIs used to retrieve service meta information. NOT used for subscription.

Application ping pong

options.ping

Code samples

import time
# pip install websocket_client
from websocket import create_connection

ws = create_connection("wss://op-ws.gateio.live/v4/ws")
ws.send('{"time": %d, "channel": "options.ping"}'% int(time.time()))
print(ws.recv())

Response example

{
   "time": 1630566602,
   "channel": "options.pong",
   "event": "",
   "error": null,
   "result": null
}

Check if connection to server is still alive.

This is an additional connection reachability check. The server uses the protocol layer ping/pong (opens new window) message to check if client is still connected. It does NOT force this method to be used. If you use some well-known WebSocket client library, you generally don't need to care about this API.

However, from the client's view, this API can help the client to actively check if the connection to server is still reachable. Additionally, if the server receives the client's options.ping request, it will also reset the client's timeout timer.

TIP

This channel does not require authentication

Contract Tickers Channel

options.contract_tickers

The ticker is a high level overview of the state of the contract. It shows you the last trade price, best ask price, best bid price, index price .etc

push type: incremental

update frequency: 1s

Client Subscription

Code samples

import time
import json

# pip install websocket_client
from websocket import create_connection

ws = create_connection("wss://op-ws.gateio.live/v4/ws")
ws.send(json.dumps({
    "time": int(time.time()),
    "channel": "options.contract_tickers",
    "event": "subscribe",  # "unsubscribe" for unsubscription
    "payload": ["BTC_USDT-20211231-59800-C"]
}))
print(ws.recv())

Payload format:

Field	Type	Required	Description
payload	Array[String]	Yes	Contract list

You can subscribe/unsubscribe multiple times. Contract subscribed earlier will not be overridden unless explicitly unsubscribed to.

TIP

This channel does not require authentication

Server Notification

Notification example

{
	"time": 1630576352,
	"channel": "options.contract_tickers",
	"event": "update",
	"result": {
    "name": "BTC_USDT-20211231-59800-P",
    "last_price": "11349.5",
    "mark_price": "11170.19",
    "index_price": "",
    "position_size": 993,
    "bid1_price": "10611.7",
    "bid1_size": 100,
    "ask1_price": "11728.7",
    "ask1_size": 100,
    "vega": "34.8731",
    "theta": "-72.80588",
    "rho": "-28.53331",
    "gamma": "0.00003",
    "delta": "-0.78311",
    "mark_iv": "0.86695",
    "bid_iv": "0.65481",
    "ask_iv": "0.88145",
    "leverage": "3.5541112718136"
	}
}

Result format:

Field	Type	Description
result	Object	Ticker Object
»» name	string	Options contract name
»»last_price	string	Last trading price
»» mark_price	string	Current mark price
»» index_price	string	Current index price
»» ask1_size	integer(int64)	Best ask size
»» ask1_price	string	Best ask price
»» bid1_size	integer(int64)	Best bid size
»» bid1_price	string	Best bid price
»» position_size	integer(int64)	Current total long position size
»» mark_iv	string	Implied volatility
»» bid_iv	string	Bid side implied volatility
»» ask_iv	string	Ask side implied volatility
»» leverage	string	Current leverage. Formula: underlying_price / mark_price * delta
»» delta	string	Delta
»» gamma	string	Gamma

Underlying Tickers Channel

options.ul_tickers

The underlying ticker shows put trades, call trades and index_price of underlyings.

push type: incremental

update frequency: 1s

Client Subscription

Code samples

import time
import json

# pip install websocket_client
from websocket import create_connection

ws = create_connection("wss://op-ws.gateio.live/v4/ws")
ws.send(json.dumps({
    "time": int(time.time()),
    "channel": "options.ul_tickers",
    "event": "subscribe",  # "unsubscribe" for unsubscription
    "payload": ["BTC_USDT"]
}))
print(ws.recv())

Payload format:

Field	Type	Required	Description
payload	Array[String]	Yes	Underlying list

You can subscribe/unsubscribe multiple times. Contract subscribed earlier will not be overridden unless explicitly unsubscribed to.

TIP

This channel does not require authentication

Server Notification

Notification example

{
   "time": 1630576352,
   "channel": "options.ul_tickers",
   "event": "update",
   "result": {
      "trade_put": 800,
      "trade_call": 41700,
      "index_price": "50695.43",
      "name": "BTC_USDT"
   }
}

Result format:

Field	Type	Description
result	Object	Ticker Object
»name	String	Underlying name
»trade_put	integer(int64)	Total put options trades amount in last 24h (unit: contract size)
» trade_call	integer(int64)	Total call options trades amount in last 24h (unit: contract size)
» index_price	string	Index price (quote currency)

Public Contract Trades Channel

options.trades

This channel sends a trade message whenever a trade occurs at gate.io. It includes details of the trade, such as price, amount, time.

push type: continuous

update frequency: real-time

Client Subscription

Code samples

import time
import json

# pip install websocket_client
from websocket import create_connection

ws = create_connection("wss://op-ws.gateio.live/v4/ws")
ws.send(json.dumps({
    "time": int(time.time()),
    "channel": "options.trades",
    "event": "subscribe",  # "unsubscribe" for unsubscription
    "payload": ["BTC_USDT-20211231-59800-C"]
}))
print(ws.recv())

Payload format:

Field	Type	Required	Description
payload	Array[String]	Yes	Contract list

You can subscribe/unsubscribe multiple times. Contracts subscribed earlier will not be overridden unless explicitly unsubscribed to.

TIP

This channel does not require authentication

Server Notification

Notification example

{
	"time": 1630576356,
	"channel": "options.trades",
	"event": "update",
	"result": [
    {
        "contract": "BTC_USDT-20211231-59800-C",
        "create_time": 1639144526,
        "id": 12279,
        "price": 997.8,
        "size": -100,
        "create_time_ms": 1639144526597,
        "underlying": "BTC_USDT"
    }
	]
}

Note that public trade channel only notify the taker side in a trade. Private user trades channel below will notify all user related trades.

Result format:

Field	Type	Description
result	Array	Array of trades
»contract	String	Options contract name
»size	int	Trading size
»id	int	Trade ID
»create_time	int	Trading time (the time of the transaction)
» create_time_ms	int	Trading time, with milliseconds set to 3 decimal places.
»price	Float	Trading price
»underlying	String	underlying name

Public Underlying Trades Channel

options.ul_trades

This channel sends all trades message under underlying whenever a trade occurs at gate.io. It includes details of the trade, such as price, amount, time.**Not a underlying trade data, it's all contracts trades data which contract under underlying **

push type: continuous

update frequency: real-time

Client Subscription

Code samples

import time
import json

# pip install websocket_client
from websocket import create_connection

ws = create_connection("wss://op-ws.gateio.live/v4/ws")
ws.send(json.dumps({
    "time": int(time.time()),
    "channel": "options.ul_trades",
    "event": "subscribe",  # "unsubscribe" for unsubscription
    "payload": ["BTC_USDT"]
}))
print(ws.recv())

Payload format:

Field	Type	Required	Description
payload	Array[String]	Yes	Underlying list

You can subscribe/unsubscribe multiple times. Contracts subscribed earlier will not be overridden unless explicitly unsubscribed to.

TIP

This channel does not require authentication

Server Notification

Notification example

{
	"time": 1630576356,
	"channel": "options.ul_trades",
	"event": "update",
	"result": [
    {
        "contract": "BTC_USDT-20211231-59800-C",
        "create_time": 1639144526,
        "id": 12279,
        "price": 997.8,
        "size": -100,
        "create_time_ms": 1639144526597,
        "underlying": "BTC_USDT",
        "is_call": true,
    }
	]
}

Result format:

Field	Type	Description
result	Array	Array of trades
»contract	String	Options contract name
»size	int	Trading size
»id	int	Trade ID
»create_time	int	Trading time
» create_time_ms	int	Trading time, with milliseconds set to 3 decimal places.
»price	Float	Trading price
»underlying	String	underlying name
»is_call	Bool	true: CALL，false:PUT

Underlying Price Channel

options.ul_price

This channel sends underlying price update messages.

push type: continuous

update frequency: real-time

Client Subscription

Code samples

import time
import json

# pip install websocket_client
from websocket import create_connection

ws = create_connection("wss://op-ws.gateio.live/v4/ws")
ws.send(json.dumps({
    "time": int(time.time()),
    "channel": "options.ul_price",
    "event": "subscribe",  # "unsubscribe" for unsubscription
    "payload": ["BTC_USDT"]
}))
print(ws.recv())

Payload format:

Field	Type	Required	Description
payload	Array[String]	Yes	Underlying list

You can subscribe/unsubscribe multiple times. Contracts subscribed earlier will not be overridden unless explicitly unsubscribed to.

TIP

This channel does not require authentication

Server Notification

Notification example

{
   "time": 1630576356,
   "channel": "options.ul_price",
   "event": "update",
   "result": {
      "underlying": "BTC_USDT",
      "price": 49653.24,
      "time": 1639143988,
      "time_ms": 1639143988931
   }
}

Result format:

Field	Type	Description
result	Object	Object of price update
»underlying	String	Options underlying name
»price	Float	underlying price
»time	int	update time (time from gate engin)
»time_ms	int	update time in millisecond (time from gate engin)

Mark Price Channel

options.mark_price

This channel sends mark price update messages.

push type: continuous

update frequency: real-time

Client Subscription

Code samples

import time
import json

# pip install websocket_client
from websocket import create_connection

ws = create_connection("wss://op-ws.gateio.live/v4/ws")
ws.send(json.dumps({
    "time": int(time.time()),
    "channel": "options.mark_price",
    "event": "subscribe",  # "unsubscribe" for unsubscription
    "payload": ["BTC_USDT-20211231-59800-P"]
}))
print(ws.recv())

Payload format:

Field	Type	Required	Description
payload	Array[String]	Yes	Contracts list

You can subscribe/unsubscribe multiple times. Contracts subscribed earlier will not be overridden unless explicitly unsubscribed to.

TIP

This channel does not require authentication

Server Notification

Notification example

{
	"time": 1630576356,
	"channel": "options.mark_price",
	"event": "update",
	"result": {
    "contract": "BTC_USDT-20211231-59800-P",
    "price": 11021.27,
    "time": 1639143401,
    "time_ms": 1639143401676
	}
}

Result format:

Field	Type	Description
result	Object	Object of mark price
»contract	String	Options contract name
»price	Float	underlying price
»time	int	update time
»time_ms	int	update time in millisecond

Settlements Channel

options.settlements

This channel sends contracts settlement update messages.

push type: continuous

update frequency: real-time

Client Subscription

Code samples

import time
import json

# pip install websocket_client
from websocket import create_connection

ws = create_connection("wss://op-ws.gateio.live/v4/ws")
ws.send(json.dumps({
    "time": int(time.time()),
    "channel": "options.settlements",
    "event": "subscribe",  # "unsubscribe" for unsubscription
    "payload": ["BTC_USDT-20211130-55000-P"]
}))
print(ws.recv())

Payload format:

Field	Type	Required	Description
payload	Array[String]	Yes	Contracts list

You can subscribe/unsubscribe multiple times. Contracts subscribed earlier will not be overridden unless explicitly unsubscribed to.

TIP

This channel does not require authentication

Server Notification

Notification example

{
   "time": 1630576356,
   "channel": "options.settlements",
   "event": "update",
   "result": {
      "contract": "BTC_USDT-20211130-55000-P",
      "orderbook_id": 2,
      "position_size": 1,
      "profit": 0.5,
      "settle_price": 70000,
      "strike_price": 65000,
      "tag": "WEEK",
      "trade_id": 1,
      "trade_size": 1,
      "underlying": "BTC_USDT",
      "time": 1639051907,
      "time_ms": 1639051907000
   }
}

Result format:

Field	Type	Description
result	Object	Object of settlement
» time	Int	Last changed time of configuration (settlement time)
» time_ms	Int	Last changed time in millisecond of configuration
» contract	string	Contract name
» profit	string	Settlement profit per size
» settle_price	string	Settlement price
» strike_price	Int	Strike price
» orderbook_id	Int	Current orderbook ID
» position_size	Int	Current total long position size
» tag	String	Settlement tag
» trade_id	int	Current trade ID
» trade_size	Int	Historical accumulated trade size
» underlying	String	underlying name

Contracts Channel

options.contracts

This channel sends contracts update messages.

push type: continuous

update frequency: real-time

Client Subscription

Code samples

import time
import json

# pip install websocket_client
from websocket import create_connection

ws = create_connection("wss://op-ws.gateio.live/v4/ws")
ws.send(json.dumps({
    "time": int(time.time()),
    "channel": "options.contracts",
    "event": "subscribe",  # "unsubscribe" for unsubscription
    "payload": ["BTC_USDT-20211130-50000-P"]
}))
print(ws.recv())

Payload format:

Field	Type	Required	Description
payload	Array[String]	Yes	Contracts list

You can subscribe/unsubscribe multiple times. Contracts subscribed earlier will not be overridden unless explicitly unsubscribed to.

TIP

This channel does not require authentication

Server Notification

Notification example

{
   "time": 1630576356,
   "channel": "options.contracts",
   "event": "update",
   "result": {
      "contract": "BTC_USDT-20211130-50000-P",
      "create_time": 1637917026,
      "expiration_time": 1638230400,
      "init_margin_high": 0.15,
      "init_margin_low": 0.1,
      "is_call": false,
      "maint_margin_base": 0.075,
      "maker_fee_rate": 0.0004,
      "mark_price_round": 0.1,
      "min_balance_short": 0.5,
      "min_order_margin": 0.1,
      "multiplier": 0.0001,
      "order_price_deviate": 0,
      "order_price_round": 0.1,
      "order_size_max": 1,
      "order_size_min": 10,
      "orders_limit": 100000,
      "ref_discount_rate": 0.1,
      "ref_rebate_rate": 0,
      "strike_price": 50000,
      "tag": "WEEK",
      "taker_fee_rate": 0.0004,
      "underlying": "BTC_USDT",
      "time": 1639051907,
      "time_ms": 1639051907000
   }
}

Result format:

Field	Type	Description
result	Object	Contract Object
» contract	string	Options contract
» tag	string	Tag
» create_time	integer(int64)	Creation time of the contract
» expiration_time	integer(int64)	Expiration time of the contract
» init_margin_high	float	Initial position margin high
» init_margin_low	float	Initial position margin low
» is_call	boolean	true means call options, while false is put options
» maint_margin_base	float	Position maintenance margin base
» multiplier	string	Multiplier used in converting from invoicing to settlement currency
» underlying	string	Underlying
» maker_fee_rate	string	Maker fee rate, where negative means rebate
» taker_fee_rate	string	Taker fee rate
» order_price_round	string	Minimum order price increment
» mark_price_round	string	Minimum mark price increment
» order_size_min	integer(int64)	Minimum order size the contract allowed
» order_size_max	integer(int64)	Maximum order size the contract allowed
» order_price_deviate	string	deviation between order price and current index price. If price of an order is denoted as order_price, it must meet the following condition: abs(order_price - mark_price) <= mark_price * order_price_deviate
» ref_discount_rate	string	Referral fee rate discount
» ref_rebate_rate	string	Referrer commission rate
» orders_limit	integer	Maximum number of open orders
» min_balance_short	float	Balance margin of unfinished orders
» min_order_margin	Float	Order margin of unfinished orders
» strike_price	float	Strike price
» time	Int64	Time of message created
» time_ms	Int64	Time of message created in millisecond

Contract Candlesticks Channel

options.contract_candlesticks

Provides a way to access charting candlestick info.

push type: incremental

update frequency: 2s

Client Subscription

If prefix contract with mark_, the contract's mark price candlesticks will be subscribed; if prefix with index_, index price candlesticks will be subscribed.

import time
import json

# pip install websocket_client
from websocket import create_connection

ws = create_connection("wss://op-ws.gateio.live/v4/ws")
ws.send(json.dumps({
    "time": int(time.time()),
    "channel": "options.contract_candlesticks",
    "event": "subscribe",  # "unsubscribe" for unsubscription
    "payload": ["10s", "BTC_USDT-20211231-59800-C"]
}))
print(ws.recv())

Payload format:

Field	Type	Required	Description
payload	Array[String]	Yes	Subscription parameters. From left to right, interval, cp
» interval	String	Yes	Candlestick data point interval
» contract	String	Yes	Options contract name

Enumerated Values

Property	Value
interval	10s
interval	1m
interval	5m
interval	15m
interval	30m
interval	1h
interval	4h
interval	8h
interval	1d
interval	7d

To subscribe to multiple contracts or with different intervals, just send multiple subscribe request with different parameters.

TIP

This channel does not require authentication

Server Notification

Notification example

{
	"time": 1630650451,
	"channel": "options.contract_candlesticks",
	"event": "update",
	"result": [
    {
        "t": 1639039260,
        "v": 100,
        "c": "1041.4",
        "h": "1041.4",
        "l": "1041.4",
        "o": "1041.4",
        "a": "0",
        "n": "10s_BTC_USDT-20211231-59800-C"
    }
	]
}

Result format:

Field	Type	Description
result	Array	Array of Candlesticks
t	Integer	Unix timestamp in seconds
o	String	Open price
c	String	Close price
h	String	Highest price
l	String	Lowest price
v	Integer	Total volume
a	String	Amount
n	String	Name of the subscription, in the format of <interval>_<cp>

Underlying Candlesticks Channel

options.ul_andlesticks

Provides a way to access charting underlying candlestick info.

push type: continuous

update frequency: 2s

Client Subscription

If prefix contract with mark_, the contract's mark price candlesticks will be subscribed; if prefix with index_, index price candlesticks will be subscribed.

import time
import json

# pip install websocket_client
from websocket import create_connection

ws = create_connection("wss://op-ws.gateio.live/v4/ws")
ws.send(json.dumps({
    "time": int(time.time()),
    "channel": "options.ul_candlesticks",
    "event": "subscribe",  # "unsubscribe" for unsubscription
    "payload": ["10s", "BTC_USDT"]
}))
print(ws.recv())

Payload format:

Field	Type	Required	Description
payload	Array[String]	Yes	Subscription parameters. From left to right, interval, cp
» interval	String	Yes	Candlestick data point interval
» contract	String	Yes	Options contract name

Enumerated Values

Property	Value
interval	10s
interval	1m
interval	5m
interval	15m
interval	30m
interval	1h
interval	4h
interval	8h
interval	1d
interval	7d

To subscribe to multiple contracts or with different intervals, just send multiple subscribe request with different parameters.

TIP

This channel does not require authentication

Server Notification

Notification example

{
	"time": 1630650451,
	"channel": "options.ul_candlesticks",
	"event": "update",
	"result": [
    {
        "t": 1639039260,
        "v": 100,
        "c": "1041.4",
        "h": "1041.4",
        "l": "1041.4",
        "o": "1041.4",
        "a": "0",
        "n": "10s_BTC_USDT"
    }
	]
}

Result format:

Field	Type	Description
result	Array	Array of Candlesticks
t	Integer	Unix timestamp in seconds
o	String	Open price
c	String	Close price
h	String	Highest price
l	String	Lowest price
v	Integer	Total volume
a	String	Amount
n	String	Name of the subscription, in the format of <interval>_<cp>

Order Book Channel

The order_book channel allow you to keep track of the state of the gate.io order book depth. It is provided on a price aggregated basis, with customizable precision.

There are three different order book channels for subscription:

• options.order_book

  Legacy channel, which uses all to push full limited-level order book, and update to send every order book change event.

• options.book_ticker

  Push best bid and ask in real-time.

• options.order_book_update

  Push order book change with user-specified update frequency.

Receiving order book update through `options.order_book` is not recommended to

use. options.order_book_update can provide more timely update with less traffic

How to maintain local order book:

1. Subscribe options.order_book_update with specified level and update frequency, e.g. ["BTC_USDT-20211130-50000-C", "1000ms", "10"] pushes the first 10 levels' update in BTC_USDT order book every 1s
2. Cache WebSocket notifications. Every notification use U and u to tell the first and last update ID since last notification.
3. Retrieve base order book using REST API, and make sure the order book ID is recorded(referred as baseID below) e.g. https://api.gatemt.com/api/v4/options/order_book?contract=BTC_USDT-20211130-50000-C&limit=10&with_id=true retrieves the 10-level base order book of BTC_USDT
4. Iterate the cached WebSocket notifications, and find the first one which contains the baseID, i.e. U <= baseId+1 and u >= baseId+1, then start consuming from it. Note that sizes in notifications are all absolute values. Use them to replace original sizes in corresponding price. If size equals to 0, delete the price from the order book.
5. Dump all notifications which satisfy u < baseID+1. If baseID+1 < first notification U, it means current base order book falls behind notifications. Start from step 3 to retrieve newer base order book.
6. If any subsequent notification which satisfy U > baseID+1 is found, it means some updates are lost. Reconstruct local order book from step 3.

You can find example application implementing the methods above in the SDK GitHub repository (opens new window)

Best bid or ask price

options.book_ticker

push type: continuous

update frequency: real-time

Client Subscription

Code samples

import time
import json

# pip install websocket_client
from websocket import create_connection

ws = create_connection("wss://op-ws.gateio.live/v4/ws")
ws.send(json.dumps({
    "time": int(time.time()),
    "channel": "options.book_ticker",
    "event": "subscribe",  # "unsubscribe" for unsubscription
    "payload": ["BTC_USDT-20211130-50000-C"]
}))
print(ws.recv())

Payload format:

Field	Type	Required	Description
payload	Array[String]	Yes	List of contracts

You can subscribe/unsubscribe multiple times. Contracts subscribed earlier will not be overridden unless explicitly unsubscribed to.

TIP

This channel does not require authentication

Server Notification

If a is empty string, it means empty asks; if b is empty string, it means empty bids.

Notification example

{
	"time": 1630650452,
	"channel": "options.book_ticker",
	"event": "update",
	"result": {
    "t": 1615366379123,
    "u": 2517661076,
    "s": "BTC_USDT-20211130-50000-C",
    "b": "54696.6",
    "B": 37000,
    "a": "54696.7",
    "A": 47061
	}
}

Result format:

Field	Type	Description
result	object	Order book ticker object
» t	Integer	Order book update time in milliseconds
» u	String	Order book update ID
» s	Integer	Contract name
» b	String	Best bid price. If no bids, it's empty string
» B	Integer	Best bid size. If no bids, it will be 0
» a	String	Best ask price. If no asks, it's empty string
» A	Integer	Best ask size. If no asks, it will be 0

Changed order book levels

options.order_book_update

push type: continuous

update frequency: 100ms

Client Subscription

Code samples

import time
import json

# pip install websocket_client
from websocket import create_connection

ws = create_connection("wss://op-ws.gateio.live/v4/ws")
ws.send(json.dumps({
    "time": int(time.time()),
    "channel": "options.order_book_update",
    "event": "subscribe",  # "unsubscribe" for unsubscription
    "payload": ["BTC_USDT-20211130-50000-C", "1000ms", "20"]
}))
print(ws.recv())

Payload format:

Field	Type	Required	Description
payload	Array[String]	Yes	Subscription parameters, from left to right, contract, interval
» contract	String	Yes	Contract name
» interval	String	Yes	Notification update speed
» level	String	No	Optional level interested. Only updates within are notified.

Enumerated Values

Property	Value
interval	100ms
interval	1000ms

Property	Value
level	5
level	10
level	20
level	50

You can subscribe/unsubscribe multiple times. Contracts subscribed earlier will not be overridden unless explicitly unsubscribed to.

TIP

This channel does not require authentication

Server Notification

Notification example

{
	"time": 1630650445,
	"channel": "options.order_book_update",
	"event": "update",
	"result": {
    "t": 1615366381417,
    "s": "BTC_USDT-20211130-50000-C",
    "U": 2517661101,
    "u": 2517661113,
    "b": [
        {
            "p": "54672.1",
            "s": 0
        },
        {
            "p": "54664.5",
            "s": 58794
        }
    ],
    "a": [
        {
            "p": "54743.6",
            "s": 0
        },
        {
            "p": "54742",
            "s": 95
        }
    ]
	}
}

Result format:

Field	Type	Description
result	object	Changed asks and bids since last update
» t	Integer	Order book update time in milliseconds
» s	Integer	Contract name
» U	Integer	First order book update ID since last update
» u	Integer	Last order book update ID since last update
» b	String	Changed bids
»» p	String	Changed price
»» s	String	Absolute size value after change. If 0, remove this price from order book
» a	String	Changed asks
»» p	String	Changed price
»» s	String	Absolute size value after change. If 0, remove this price from order book

Limited-Level Full Order Book Snapshot

options.order_book

push type: continuous

update frequency: 250ms

Client Subscription

Code samples

import time
import json

# pip install websocket_client
from websocket import create_connection

ws = create_connection("wss://op-ws.gateio.live/v4/ws")
ws.send(json.dumps({
    "time": int(time.time()),
    "channel": "options.order_book",
    "event": "subscribe",  # "unsubscribe" for unsubscription
    "payload": ["BTC_USDT-20211130-50000-C", "20", "0"]
}))
print(ws.recv())

Payload format:

Field	Type	Required	Description
contract	String	Yes	Contract name
limit	String	Yes	Limit, legal limits:50, 20, 10, 5, 1
accuracy	String	Yes	Now only support "0"

Enumerated Values

Property	Value
level	5
level	10
level	20

Property	Value
accuracy	0

You can subscribe/unsubscribe multiple times. Contracts subscribed earlier will not be overridden unless explicitly unsubscribed to.

TIP

This channel does not require authentication

Server Notification

Notification example

{
	"time": 1630650445,
	"channel": "options.order_book",
	"event": "all",
	"result": {
    "t": 1541500161123,
    "contract": "BTC_USDT-20211130-50000-C",
    "id": 93973511,
    "asks": [
        {
            "p": "97.1",
            "s": 2245
        },
        {
            "p": "97.1",
            "s": 2245
        }
    ],
    "bids": [
        {
            "p": "97.1",
            "s": 2245
        },
        {
            "p": "97.1",
            "s": 2245
        }
    ]
	}
}

Or

{
  "channel": "options.order_book",
  "event": "update",
  "time": 1630650445,
  "result": [
    {
      "p": "49525.6",
      "s": 7726,
      "c": "BTC_USDT-20211130-50000-C",
      "id": 93973511
    }
  ]
}

Result format:

Field	Type	Description
result	Array	Array of objects
»c	String	Options contract name
»s	Integer	This number is the final value, the calculated value. Positive Numbers represent long(bids), Negative number represent short(asks)
»p	String	This order book price
»id	Integer	This price order book id

Orders Channel

options.orders

Provides a way to receive user closed orders.

push type: continuous

update frequency: real-time

Client Subscription

Code samples

import time
import json

# pip install websocket_client
from websocket import create_connection

ws = create_connection("wss://op-ws.gateio.live/v4/ws")
request = {
    "time": int(time.time()),
    "channel": "options.orders",
    "event": "subscribe",  # "unsubscribe" for unsubscription
    "payload": ["1001","BTC_USDT-20211130-65000-C"]
}
# refer to Authentication section for gen_sign implementation
request['auth'] = gen_sign(request['channel'], request['event'], request['time'])
ws.send(json.dumps(request))
print(ws.recv())

Payload format:

Field	Type	Required	Description
user id	String	Yes	User id
contract	String	Yes	Options contract name

You can subscribe/unsubscribe multiple times. Contract subscribed earlier will not be overridden unless explicitly unsubscribed to.

If you want to subscribe to all orders updates in all contracts, you can include !all in contract list.

WARNING

This channel requires authentication.

Server Notification

Notification example

{
   "time": 1630654851,
   "channel": "options.orders",
   "event": "update",
   "result": [
      {
         "contract": "BTC_USDT-20211130-65000-C",
         "create_time": 1637897000,
         "fill_price": 0,
         "finish_as": "cancelled",
         "iceberg": 0,
         "id": 106,
         "is_close": false,
         "is_liq": false,
         "is_reduce_only": false,
         "left": -10,
         "mkfr": 0.0004,
         "price": 15000,
         "refr": 0,
         "refu": 0,
         "size": -10,
         "status": "finished",
         "text": "web",
         "tif": "gtc",
         "tkfr": 0.0004,
         "underlying": "BTC_USDT",
         "user": "9xxx",
         "time": 1639051907,
         "time_ms": 1639051907000
      }
   ]
}

Updated order list. Note it is possible that multiple contracts' orders will be updated in one notification.

Result format:

Field	Type	Description
result	Array[Object]	Updated order list
» id	integer(int64)	Options order ID
» user	String	User ID
» create_time	integer(int64)	Creation time of order
» finish_as	string	How the order was finished. - filled: all filled - cancelled: manually cancelled - liquidated: cancelled because of liquidation - ioc: time in force is IOC, finish immediately - auto_deleveraged: finished by ADL - reduce_only: cancelled because of increasing position while reduce-only set- position_closed: cancelled because of position close
» status	string	Order status - open: waiting to be traded - finished: finished
» contract	string	Contract name
» size	integer(int64)	Order size. Specify positive number to make a bid, and negative number to ask
» iceberg	integer(int64)	Display size for iceberg order. 0 for non-iceberg. Note that you will have to pay the taker fee for the hidden size
» price	string	Order price. 0 for market order with tif set as ioc
» is_close	boolean	Is the order to close position
» is_reduce_only	boolean	Is the order reduce-only
» is_liq	boolean	Is the order for liquidation
» tif	string	Time in force - gtc: GoodTillCancelled - ioc: ImmediateOrCancelled, taker only - poc: PendingOrCancelled, reduce-only
» left	integer(int64)	Size left to be traded
» fill_price	string	Fill price of the order
» tkfr	Float	Taker fee
» mkfr	Float	Maker fee
» refu	integer	Reference user ID
» refr	Float	Referrer rebate
» underlying	String	underlying name
» time	int	Creation time of message
» time_ms	Int	Creation time of message in millisecond

User Trades Channel

options.usertrades

Provides a way to receive user trades.

push type: continuous

update frequency: real-time

Client Subscription

Code samples

import time
import json

# pip install websocket_client
from websocket import create_connection

ws = create_connection("wss://op-ws.gateio.live/v4/ws")
request = {
    "time": int(time.time()),
    "channel": "options.usertrades",
    "event": "subscribe",  # "unsubscribe" for unsubscription
    "payload": ["1001", "BTC_USDT-20211216-44800-C"]
}
# refer to Authentication section for gen_sign implementation
request['auth'] = gen_sign(request['channel'], request['event'], request['time'])
ws.send(json.dumps(request))
print(ws.recv())

Payload format:

Field	Type	Required	Description
user id	String	Yes	User id
contract	String	Yes	Options contract name

You can subscribe/unsubscribe multiple times. Contract subscribed earlier will not be overridden unless explicitly unsubscribed to.

If you want to subscribe to all user trades updates in all contracts, you can include !all in contract list.

WARNING

This channel requires authentication.

Server Notification

Notification example

{
   "time": 1639144214,
   "channel": "options.usertrades",
   "event": "update",
   "result": [
      {
         "id": "1",
         "underlying": "BTC_USDT",
         "order": "557940",
         "contract": "BTC_USDT-20211216-44800-C",
         "create_time": 1639144214,
         "create_time_ms": 1639144214583,
         "price": "4999",
         "role": "taker",
         "size": -1
      }
   ]
}

Updated user trades list. Note it is possible that multiple contracts' trades will be updated in one notification.

Result format:

Field	type	description
result	Array	Array of objects
»contract	String	Options contract name
»create_time	Integer	Create time
»create_time_ms	Integer	Create time in milliseconds
»id	String	Trades id
»order	String	Order Id
»price	String	Trade price
»size	Integer	Trades size
»role	String	User role (maker/taker)

Enumerated Values

Property	Value
role	maker
role	taker

Liquidates Channel

options.liquidates

Provides a way to receive user liquidates info. ()

push type: continuous

update frequency: real-time

Client Subscription

Code samples

import time
import json

# pip install websocket_client
from websocket import create_connection

ws = create_connection("wss://op-ws.gateio.live/v4/ws")
request = {
    "time": int(time.time()),
    "channel": "options.liquidates",
    "event": "subscribe",  # "unsubscribe" for unsubscription
    "payload": ["1001", "BTC_USDT-20211130-50000-C"]
}
# refer to Authentication section for gen_sign implementation
request['auth'] = gen_sign(request['channel'], request['event'], request['time'])
ws.send(json.dumps(request))
print(ws.recv())

Payload format:

Field	Type	Required	Description
user id	String	Yes	User id
contract	String	Yes	Options contract name

You can subscribe/unsubscribe multiple times. Contract subscribed earlier will not be overridden unless explicitly unsubscribed to.

WARNING

This channel requires authentication.

Server Notification

Notification example

{
   "channel": "options.liquidates",
   "event": "update",
   "time": 1630654851,
   "result": [
      {
         "user": "1xxxx",
         "init_margin": 1190,
         "maint_margin": 1042.5,
         "order_margin": 0,
         "time": 1639051907,
         "time_ms": 1639051907000
      }
   ]
}

Result format:

Field	Type	Description
result	Array	Array of objects
» time	int64	Position close time
» time	int64	Position close time in millisecond
» user	string	User id
» init_margin	float	Initial position margin
» maint_margin	float	Position maintenance margin
» order_margin	float	Order margin of unfinished orders

User Settlements Channel

options.user_settlements

Provides a way to receive user settlements info.

push type: continuous

update frequency: real-time

Client Subscription

Code samples

import time
import json

# pip install websocket_client
from websocket import create_connection

ws = create_connection("wss://op-ws.gateio.live/v4/ws")
request = {
    "time": int(time.time()),
    "channel": "options.user_settlements",
    "event": "subscribe",  # "unsubscribe" for unsubscription
    "payload": ["1001", "BTC_USDT-20211130-65000-C"]
}
# refer to Authentication section for gen_sign implementation
request['auth'] = gen_sign(request['channel'], request['event'], request['time'])
ws.send(json.dumps(request))
print(ws.recv())

Payload format:

Field	Type	Required	Description
user id	String	yes	user id
contract	String	yes	Options contract name

You can subscribe/unsubscribe multiple times. Contract subscribed earlier will not be overridden unless explicitly unsubscribed to.

WARNING

This channel requires authentication.

Server Notification

Notification example

{
   "channel": "options.user_settlements",
   "event": "update",
   "time": 1639051907,
   "result": [
      {
         "contract": "BTC_USDT-20211130-65000-C",
         "realised_pnl": -13.028,
         "settle_price": 70000,
         "settle_profit": 5,
         "size": 10,
         "strike_price": 65000,
         "underlying": "BTC_USDT",
         "user": "9xxx",
         "time": 1639051907,
         "time_ms": 1639051907000
      }
   ]
}

Field	Type	Description
result	Array	Array of objects
»realised_pnl	Float	Realized PNL
»settle_price	Float	settlement price
»settle_profit	Integer	Settlement profit per size
»strike_price	float	Strike price
»underlying	string	underlying name
»size	Integer	Trade size
»time	Integer	settle time
»time_ms	Integer	settle time in milliseconds
»user	String	User id
»contract	String	Options contract name

Position Closes Channel

options.position_closes

Provides a way to receive user position closes info.

push type: continuous

update frequency: real-time

Client Subscription

Code samples

import time
import json

# pip install websocket_client
from websocket import create_connection

ws = create_connection("wss://op-ws.gateio.live/v4/ws")
request = {
    "time": int(time.time()),
    "channel": "options.position_closes",
    "event": "subscribe",  # "unsubscribe" for unsubscription
    "payload": ["1001", "BTC_USDT-20211130-50000-C"]
}
# refer to Authentication section for gen_sign implementation
request['auth'] = gen_sign(request['channel'], request['event'], request['time'])
ws.send(json.dumps(request))
print(ws.recv())

Payload format:

Field	Type	Required	Description
user id	String	yes	user id
contract	String	yes	Options contract name

You can subscribe/unsubscribe multiple times. Contract subscribed earlier will not be overridden unless explicitly unsubscribed to.

WARNING

This channel requires authentication.

Server Notification

Notification example

    {
   "channel": "options.position_closes",
   "event": "update",
   "time": 1630654851,
   "result": [
      {
         "contract": "BTC_USDT-20211130-50000-C",
         "pnl": -0.0056,
         "settle_size": 0,
         "side": "long",
         "text": "web",
         "underlying": "BTC_USDT",
         "user": "11xxxxx",
         "time": 1639051907,
         "time_ms": 1639051907000
      }
   ]
}

Result format:

Field	Type	Description
result	Array	Array of objects
»contract	String	Options contract name
»pnl	Float	Profit & loss
»side	String	Position side, long or short
»text	String	Text of close order
»time	Integer	Position close time
»time_ms	Integer	Time in milliseconds
»user	String	User id
»underlying	string	underlying name

Enumerated Values

Property	Value
side	long
side	Short

Balances Channel

options.balances

Provides a way to receive user balances info.

push type: continuous

update frequency: real-time

Client Subscription

Code samples

import json
import time
from websocket import create_connection

ws = create_connection("wss://op-ws.gateio.live/v4/ws")
request = {
    "time": int(time.time()),
    "channel": "options.balances",
    "event": "subscribe",  # "unsubscribe" for unsubscription
    "payload": ["1001"]
}
# refer to Authentication section for gen_sign implementation
request['auth'] = gen_sign(request['channel'], request['event'], request['time'])
ws.send(json.dumps(request))
print(ws.recv())

Payload format:

Field	Type	Required	Description
user id	String	Yes	User id

WARNING

This channel requires authentication.

Server Notification

Notification example

{
   "channel": "options.balances",
   "event": "update",
   "time": 1630654851,
   "result": [
      {
         "balance": 60.79009,
         "change": -0.5,
         "text": "BTC_USDT-20211130-55000-P",
         "type": "set",
         "user": "11xxxx",
         "time": 1639051907,
         "time_ms": 1639051907000
      }
   ]
}

Result format:

Field	Type	Description
result	Array	Array of objects
»balance	Float	Balance after changed
»change	Float	Change size
»text	String	Balance change message
»time	Integer	Balance change Time
»time_ms	Integer	Time in milliseconds
»type	String	Type
»user	String	User id

Positions Channel

options.positions

Provides a way to receive user positions info.

push type: continuous

update frequency: real-time

Client Subscription

Code samples

import json
import time
from websocket import create_connection

ws = create_connection("wss://op-ws.gateio.live/v4/ws")
request = {
    "time": int(time.time()),
    "channel": "options.positions",
    "event": "subscribe",  # "unsubscribe" for unsubscription
    "payload": ["1001", "BTC_USDT-20211130-65000-C"]
}
# refer to Authentication section for gen_sign implementation
request['auth'] = gen_sign(request['channel'], request['event'], request['time'])
ws.send(json.dumps(request))
print(ws.recv())

Payload format:

Field	Type	Required	Description
user id	String	Yes	User id
contract	String	Yes	Options contract name

You can subscribe/unsubscribe multiple times. Contract subscribed earlier will not be overridden unless explicitly unsubscribed to.

Authentication required.

Server Notification

Notification example

{
   "time": 1630654851,
   "channel": "options.positions",
   "event": "update",
   "error": null,
   "result": [
      {
         "entry_price": 0,
         "realised_pnl": -13.028,
         "size": 0,
         "contract": "BTC_USDT-20211130-65000-C",
         "user": "9010",
         "time": 1639051907,
         "time_ms": 1639051907000
      }
   ]
}

Result format:

Field	Type	Description
result	Array	Array of objects
»contract	String	Options contract name
»entry_price	Float	Entry price
»realised_pnl	Float	Realized PNL
»size	Integer	Contract size
»time	Integer	Update unix timestamp
»time_ms	Integer	Update unix timestamp in milliseconds
»user	String	User id