Quickstart Guide

Quickly establish a connection via websocket and start receiving streaming data and analytics.
Subscribing to the Endpoint
All subscriptions go through a single endpoint URL :
wss://pro.cryptostats.dev:8443/?options=:options
 This endpoint is SSL encrypted and supported by a high capacity, low-latency C++ websocket implementation to reduce latency whilst maintaining security.
You can add your API key to gain access to your subscribed channels:
Python
JavaScript
Java
Python
from websocket import create_connection
import urllib
​
options = {
    api_key: [YOUR_API_KEY],
    action: 'subscribe',
    channels: [YOUR_CHANNELS]
}
​
options_url = urllib.parse.urlencode(options)
url = f'wss://pro.cryptostats.dev:8443/?options={options_url}'
ws = create_connection(url)
​
JavaScript
const options = {
    api_key: [YOUR_API_KEY],
    action: 'subscribe',
    channels: [YOUR CHANNELS]
}
​
const options_URL = encodeURIComponent(JSON.stringify(options))
const url = `wss://pro.cryptostats.dev:8443/?options=${options_URL}`
const ws = new WebSocket(url)
​
Java
Please see implementation here: https://github.com/Cryptostats/Cryptostats-Java
Channel subscriptions can be passed as part of the options parameters or can be sent separately after connecting to the WebSocket.
ws.send({action: 'subscribe', channel: [YOUR_CHANNEL]})
Full Implementation
Below is a working implementation subscribing to normalized trades on the BTC-PERPETUAL instrument at deribit:
Python
Node.js
Java
Python
# pip install websocket-client
# pip install ujson
import websocket
import ujson as json
from urllib.parse import quote
​
subscription = {
    'action': 'subscribe',
    'channel': ["deribit.BTC-PERPETUAL.trade"],
}
​
​
def on_open(msg):
    print(f"Opened: {msg}")
​
​
def on_message(_, msg):
    print(f"Message: {msg}")
​
​
def on_error(_, msg):
    print(f"Error: {msg}")
​
​
def on_close(msg):
    print(f"Closed: {msg}")
​
result = quote(json.dumps(subscription))
ws = websocket.WebSocketApp(f'wss://pro.cryptostats.dev:8443?options={result}',
                            on_open=on_open,
                            on_message=on_message,
                            on_error=on_error,
                            on_close=on_close)
​
"""
    Helper Functions
"""
​
​
def send(action, channel):
    ws.send(json.dumps({'action': action, 'channel': [channel]}))
​
​
def subscribe(channel):
    send("subscribe", channel)
​
​
def unsubscribe(channel):
    send("unsubscribe", channel)
​
​
ws.run_forever()
​
Node.js
const WebSocket = require('ws');
​
function urlencode(options) {
    return encodeURIComponent(JSON.stringify(options))
}
​
const subscription = {
    'action': 'subscribe',
    'channel': "deribit.BTC-PERPETUAL.trade",
}
​
const url = `wss://pro.cryptostats.dev:8443?options=${urlencode(subscription)}`
const ws = new WebSocket(url)
​
ws.on('open', function open() {
    console.log("open")
});
​
ws.on('close', function incoming(data) {
    console.log("Close")
    console.log(data);
});
​
​
ws.on('message', function incoming(data) {
    console.log(data);
});
​
// Helper Functions for subscribing to new channels
async function send(action, channel){
    const message = {
        action: action,
        channel: [channel]
    }
    ws.send(JSON.stringify(message))
}
​
async function subscribe(channel){
    send("subscribe", channel)
}
​
async function unsubscribe(channel){
    send("unsubsribe", channel)
}
​
Java
Please see implementation here: https://github.com/Cryptostats/Cryptostats-Java
Live Runnable Example (Node.js)
Live Runnable Example (Python)
​
What is Cryptostats?
Next - Streaming API
Normalized Data
Last updated 5 months ago