TRADEWITH THE BEST

import hmac, hashlib, time, requests

GATEWAY = 'https://api.abcex.io'

def call(method, path, body=''):
    ts = str(int(time.time() * 1000))
    message = f'{ts}\n{method}\n{path}\n{body}'
    signature = hmac.new(SECRET_KEY.encode(),
        message.encode(), hashlib.sha256).hexdigest()
    return requests.request(method, GATEWAY + path, headers={
        'X-API-Key':       PUBLIC_KEY,
        'X-API-Timestamp': ts,
        'X-API-Signature': signature,
    })

# Кто я?
print(call('GET', '/api/v1/auth/me').json())
const crypto = require('node:crypto');

const GATEWAY = 'https://api.abcex.io';

async function call(method, path, body = '') {
  const ts = Date.now().toString();
  const message = `${ts}\n${method}\n${path}\n${body}`;
  const signature = crypto.createHmac('sha256', SECRET_KEY)
    .update(message).digest('hex');
  const res = await fetch(GATEWAY + path, {
    method,
    headers: {
      'X-API-Key':       PUBLIC_KEY,
      'X-API-Timestamp': ts,
      'X-API-Signature': signature,
    },
  });
  return res.json();
}

console.log(await call('GET', '/api/v1/auth/me'));
const crypto    = require('node:crypto');
const WebSocket = require('ws');

const ws = new WebSocket('wss://hub.abcex.io/websocket/exchange');

ws.on('open', () => {
  const ts = Date.now();
  const signature = crypto.createHmac('sha256', SECRET_KEY)
    .update(`${ts}\n${PUBLIC_KEY}`).digest('hex');

  // авторизация и подписка на стакан
  ws.send(JSON.stringify({ method: 'auth', key: PUBLIC_KEY,
    timestamp: ts, signature }));
  ws.send(JSON.stringify({ id: 1, method: 'subscribe',
    data: ['BTCUSDT@depth'] }));
});

ws.on('message', raw => console.log(JSON.parse(raw.toString())));