For AI agents: a documentation index is available at the root level at /llms.txt. Append /llms.txt to any URL for a page-level index, or .md for the markdown version of any page.

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Candles

WSS

/ws

Handshake

URL	wss://api.hyperliquid-testnet.xyz/ws
Method	GET
Status	101 Switching Protocols

Messages

Subscribe to live Hyperliquid OHLCV candles for one Predict outcome-side market and interval to update charts and time-series analytics.

Handshake

WSS

/ws

Send

subscribeobjectRequired

Receive

updateobjectRequired

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Welcome Guides API Reference

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