Hyperliquid builder fees explained

Updated 26 Oct 2026

A builder fee is a small fee that an app, a bot or a trading front end adds to the trades it sends to Hyperliquid on your behalf. It is Hyperliquid's way of letting anyone build on its order book and get paid for it.

How it works

You approve it first. Your main wallet signs an approval that names the app's builder address and the maximum fee it may charge. An agent or API wallet can't approve it for you.
Hyperliquid caps it. At most 0.1% on perps and 1% on spot, on top of Hyperliquid's normal trading fee.
You can revoke it at any time, and the app can then no longer charge it.
It's charged per trade, only on trades that app sends. Trading on Hyperliquid's own site doesn't pay it.

Builder fee vs referral code

	Referral code	Builder fee
Who pays	Nobody extra: it comes out of Hyperliquid's fee	You, on top of the trading fee
Effect on your cost	4% lower fees (first $25M)	Slightly higher, up to the cap you approve
How long	Bound to the wallet for good	Until you revoke it
Approved by	Entering the code once	Signing a fee approval

The two can apply together: an app can carry a builder fee while your wallet keeps its referral discount.

What to check before approving

The maximum you are signing for, as a percentage, and what the app actually charges.
The builder address, and that it belongs to the app you meant to use.
That you're signing a fee approval, not a withdrawal or a token approval. A builder fee approval can't move funds.

On JoinEm

Stryx bots carry Stryx's own builder fee. When automatic copying launches on JoinEm, copied trades will carry a small JoinEm builder fee, shown before you approve it. Rankings, trader pages and Telegram alerts stay free. See Hyperliquid fees explained for the trading fees underneath.