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KuCoin API

KuCoin API

UpFreefinancial

KuCoin API is KuCoin exchange's programmatic interface, known for rich altcoin listings — particularly friendly to emerging small-cap coin trading.

Visit site ↗Documentation ↗Health checked 9h ago
Use it when

Many altcoins (700+ coins)

Watch for

Altcoin liquidity less than Binance

First check

Create API key in KuCoin account (including passphrase). GET https://api.kucoin.com/api/v1/market/orderbook/level1?symbol=BTC-USDT for spot.

Auth
api_key
CORS
?
HTTPS
Yes
Signup
?
Latency
817 ms
Protocol
REST, WebSocket
Pricing
free

Uptime · 30-day window

Probes: 1Uptime: 100%Avg latency: 817ms
01

About this API

KuCoin is an exchange founded 2017 (headquartered in Seychelles, main team has mainland China background). Its crypto-world positioning is "People's Exchange" — friendly to small-medium investors and altcoin enthusiasts. Biggest feature is rich small-cap coin listings (700+ coins, far more than compliance exchanges like Coinbase); meme coins, new issuances, low-cap tokens typically list on KuCoin weeks to months before Coinbase/Binance. This fast-listing strategy benefits early traders but also means more rug-pull risk coins. API is complete (spot + margin + futures), free to use. Hacked once in 2020 (~$280M, mostly recovered, limited impact). Restricted in US and some countries.

02

What you can build

  • 1Small-cap altcoin trading bots
  • 2Altcoin arbitrage
  • 3Early meme coin discovery trading
  • 4Strategies beyond mainstream coins
03

Strengths & limitations

Strengths

  • Many altcoins (700+ coins)
  • Fast listing for small-cap coins
  • Free API

Limitations

  • Altcoin liquidity less than Binance
  • Historical issues (hacked for ~$280M in 2020)
  • Restricted in some countries
04

Example request

Generic template — replace <endpoint> with the real path from the docs.
curl https://www.kucoin.com/<endpoint> \
  -H "Authorization: Bearer $API_KEY"
# Some providers use X-Api-Key instead — verify in the docs.
05

Getting started

Create API key in KuCoin account (including passphrase). GET https://api.kucoin.com/api/v1/market/orderbook/level1?symbol=BTC-USDT for spot.

06

FAQ

Can US users use KuCoin?+

KuCoin officially doesn't service US users. US: use Coinbase/Kraken.

Is the API secure and reliable?+

After the 2020 hack, cold wallet ratios and security audits were strengthened. Day-to-day API operations are as reliable as other exchanges.

07

Technical details

CORS: ?HTTPS: YesSignup: ?Open source: No
Auth type
api_key
Pricing
free
Rate limit
30 req/s per IP；用户级别有自己额度
Protocols
REST, WebSocket
SDKs
python, javascript, go, java
Response time
817 ms
Last health check
5/12/2026, 7:37:45 AM
08

Tags

cryptokucoinexchangealtcoin