Quick answer
All three sign requests with HMAC-SHA256. Binance signs the query string and reports request weight in headers; Bybit signs timestamp + key + recv_window + payload and offers Demo Trading at api-demo.bybit.com; OKX signs timestamp + method + path + body with a passphrase header and runs demo trading on the same host via x-simulated-trading: 1. OKX and Bybit cover options; Binance spot has the deepest books.
Side-by-side comparison
| API | Markets | Auth | Paper / sandbox | Pricing | In AlgoGP |
|---|---|---|---|---|---|
| Binance | Crypto | REST + API key | Spot testnet with test funds | Free API; trading fees apply | Built into AlgoGP |
| Bybit | Crypto | REST + API key | Demo Trading account (api-demo.bybit.com) | Free API; trading fees apply | Built into AlgoGPPro |
| OKX | Crypto, Futures, Options | REST + API key | Demo Trading (same host, x-simulated-trading header) | Free API; trading fees apply | Built into AlgoGPPro |
Which one should you pick?
Binance if spot liquidity and ecosystem tooling matter most.
Build with BinanceOKX if you want options and a unified account with one API.
Build with OKXBybit if you trade perpetuals and want demo trading on real prices.
Build with Bybit
Signing at a glance
| Binance | Bybit | OKX | |
|---|---|---|---|
| String signed | Query string | ts + key + recv_window + payload | ts + METHOD + path + body |
| Encoding | Hex | Hex | Base64 |
| Extra header | X-MBX-APIKEY | X-BAPI-* | OK-ACCESS-PASSPHRASE |
| Test env | testnet.binance.vision | api-demo.bybit.com | Same host + demo header |
| BTC/USD symbol | BTCUSDT | BTCUSDT | BTC-USDT |
Frequently asked questions
Can one bot trade Binance, Bybit and OKX?
Yes. Normalize symbols, lot sizes and signing per exchange behind one interface; AlgoGP’s exported brokers.py does exactly this.
Test the strategy before you pick the API
Describe your idea to AlgoGP’s copilot, backtest it on years of stock, crypto or forex data with realistic costs, then export Python wired to Binance or any built-in broker. Swap the broker later without touching the strategy.
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AlgoGP is not affiliated with any provider listed. Details change; check each provider’s documentation. Nothing here is investment advice.