KuCoin lists a very wide range of altcoins and exposes a full REST + WebSocket API for spot and futures. Here's how to get keys and what it costs.
| Use | Costo |
|---|---|
| Market data (REST/WS) | Gratuito |
| Spot taker fee | ~0.1% (less with KCS) |
| Futures taker | ~0.06% |
| API access | Gratuito |
1. Sign up / log in at kucoin.com and complete verification.
2. Aprire API Management from the account menu and click Create API.
3. Imposta un passphrase, choose permissions (General / Spot / Futures) and an IP allow-list.
4. Copia il Key, Secret E Passphrase — all three are needed to sign requests.
5. Keep withdrawals disabled on trading keys.
Never share your secret — regenerate it if leaked. For data-only bots enable read-only. Always whitelist your server IP E disable withdrawals on API keys unless you truly need them — a leaked withdraw-enabled key can drain your account.
For deeper liquidity on majors see Binance E OKX; KuCoin shines for long-tail altcoins.
Yes. Creating API keys and calling market-data endpoints costs nothing — you only pay KuCoin's normal trading fees on orders the API places, around 0.1% spot taker (less if you hold KCS) and roughly 0.06% futures taker.
Sign up and verify your identity at kucoin.com, open API Management from the account menu, click Create API, set a passphrase, choose permissions (General / Spot / Futures) and an IP allow-list, then copy the Key, Secret and Passphrase — all three are needed to sign requests.
On the Classic API, VIP0 (default) accounts get 4,000 request-points per 30 seconds for Spot/Margin and 2,000 per 30 seconds for Futures; higher VIP tiers get proportionally more. KuCoin's newer Unified Trading Account (UTA) uses a simpler requests-per-second cap starting at 300/s for VIP0. Exceeding either limit returns HTTP 429 with error code 429000.
Never share your secret or passphrase — regenerate them if leaked. Enable read-only permissions for data bots, restrict the key to your server's IP address, and disable withdrawals on trading keys unless you truly need them, since a leaked withdraw-enabled key can drain your account.
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