Trading Fees
The fees on this page are for the current Hyperliquid testnet and are not final. Every number here, including the Synchronicity builder fee, is provisional and subject to change before the mainnet launch. On testnet any fee is paid in test funds, so treat these as a guide to how costs work, not as the rates you will pay with real money.
A deployed strategy sends every order to Hyperliquid, and every order carries a cost. Three of them, to be exact, and they come from three different places. Synchronicity is currently on Hyperliquid testnet, so these are the costs a strategy carries today. Knowing which is which now means the cost is something you set, not something you discover after a fill prints.
This page separates the three. The trade itself pays the exchange. Synchronicity adds a thin builder fee on top of the trade. Signac, the AI, runs on its own meter and never touches your fills. The order in which they apply is at the bottom of the page.
Where the fees come from
Synchronicity is where you compose, test, and deploy the strategy. It is not the exchange. When an Order node runs, the trade executes on Hyperliquid, and Hyperliquid is where the actual buy or sell settles. So the first and largest line on any trade is the exchange’s, not ours.
On top of that single trade, two Synchronicity-specific costs can apply. One is the builder fee, a small amount added to the order through Hyperliquid’s builder-code mechanism.
Signac also has a limit on its usage. However this usage is not charged to your account.
Each section below takes one of the three apart.
Hyperliquid trading fees
The trade pays Hyperliquid. Because every Order node executes on Hyperliquid, the maker and taker fees on your fills are Hyperliquid’s own schedule, charged by the exchange. Synchronicity does not set them, mark them up, or restate them here.
That schedule depends on whether your order adds or removes liquidity (maker versus taker), your recent volume, and any rate tier you qualify for. Those numbers change, and the exchange is the only authoritative source for them.
Read the current schedule in Hyperliquid’s official fee documentation .
A market order that takes liquidity costs more than a resting limit order that provides it. If your strategy leans on taker fills, the exchange fee is the largest cost you carry. Read the schedule before you scale size.
Synchronicity builder fee
When Synchronicity sends an order to Hyperliquid, it can attach a builder code, Hyperliquid’s native way for an interface to charge a small fee alongside a trade. When you connect, you approve a cap on that builder fee with its own signature, separate from the agent approval, so the ceiling is fixed and visible up front.
The cap and the per-order rates, verified in the code:
| Surface | Builder fee |
|---|---|
| Approved cap (the ceiling) | 10 bps (0.1%) |
| Direct trades | 0 bps |
| Strategy orders | 5 bps |
A basis point (bps) is one hundredth of a percent. Ten basis points is 0.1%, the most Synchronicity can ever charge per trade under the approval you sign. The cap is the maximum, not the rate. The rate actually applied is lower and depends on how the order was placed.
The 10 bps you approve is a ceiling, not a charge taken up front. It is the maximum builder fee Hyperliquid will let Synchronicity attach to any single order, signed once and enforced by the exchange. The fee actually applied is 5 bps on a strategy order and 0 bps on a direct trade from our UI.
- Direct trades placed by hand carry a 0 bps builder fee. Trading manually through the interface adds nothing on top of the exchange fee.
- Strategy orders sent by a deployed strategy currently carry a 5 bps builder fee, half the cap. That rate may change, but the 10 bps you approved stays the ceiling.
Because the cap is signed once and enforced by Hyperliquid, no order can exceed it, whatever happens downstream. You authorize the ceiling, and the exchange holds the line.
Signac usage
Signac, the AI inside the builder, runs on a separate meter. This is the distinction worth carrying: Signac usage is metered, not a trading fee. It is measured while you build a strategy and has nothing to do with what trades or what fills.
A usage widget shows your current Signac usage as you work. Heavy back-and-forth and web searches draw down more than a quick question, and if you reach a limit, Signac tells you in the chat. See Building with Signac for how the meter behaves while you compose.
Signac usage is metered separately from trading fees. It is not charged or deducted from your Hyperliquid balance.
What you pay, in order
For a single trade sent by a deployed strategy on Hyperliquid, the costs stack like this (test funds on testnet, real funds on mainnet):
- Hyperliquid trading fee. The exchange’s maker or taker fee on the fill, set by Hyperliquid’s schedule. The largest line on most trades. See Hyperliquid’s fees .
- Synchronicity builder fee. 5 bps on a strategy order, 0 bps on a direct trade, capped at 10 bps by the agent approval you signed.
- Signac usage. A separate meter, drawn down while you build. Not a trading fee and not charged to you.
The exchange charges for the trade. Synchronicity adds a thin builder fee on top, with a hard 10 bps ceiling you approve in advance. Signac is its own meter and never wires into your orders. Know all three before you go live, and the cost of trading is a number you chose rather than one you found out about later.