Cryptocurrency — entry 048 of 53
OKX
OKEx rebranded to OKX in 2022 and its old okex.com/docs/ portal is gone entirely; the live API reference now lives at okx.com/docs-v5. The v5 REST and WebSocket API covers spot, margin, futures, options, and perpetual swaps, authenticated via an API key, secret, and passphrase with HMAC-SHA256-signed requests, and access is free with VIP fee tiers tied to trading volume rather than data pricing.
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<a href="https://greatapis.com/api/okex/"><img src="https://greatapis.com/badge/okex.svg" alt="Scored 70 on greatapis.com"></a>Auth quickstart
- Sign up with the provider to get an API key.
- Send it on every request as a header
Authorization: <key> - The exact header isn't documented — Authorization is a common default; confirm in the provider's docs.
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.
Developer reference
20 requests per 2 seconds on public REST endpoints (e.g. get-instruments); WebSocket connections capped at 3 requests/second per IP and 480 subscribe/unsubscribe/login operations per hour; order endpoints allow up to 1,000 requests per 2 seconds per sub-account.