HTX (formerly Huobi) is a long-running global exchange with a full spot, margin and futures API over REST and WebSocket, strong in Asian markets and altcoin coverage.
| Use | Cost |
|---|---|
| Market data | Free |
| Spot taker | ~0.2% (less with HT / VIP) |
| Futures taker | ~0.04% |
| API access | Free |
HTX signs requests with HMAC-SHA256 and a timestamp โ most 'invalid signature' errors are a clock-skew or parameter-ordering issue, not a bad key.
Log in at htx.com, open API Management, create a key, set read/trade permissions, copy the secret once and bind your server IP.
Never share your secret โ it's shown once and can't be recovered (regenerate if leaked). For data-only bots enable read-only. Always whitelist your server IP, and never enable withdrawals on an API key unless you truly need it.
Binance and Bybit have larger derivatives books. Compare the big three first: Binance, Bybit, OKX. For pure price data, CoinGecko is simpler.
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Not affiliated with HTX (Huobi). Prices are reference estimates โ verify on the official site.