GMX said on X that it has enabled Builder Fees on Solana, introducing a mechanism that allows third-party developers to earn fees from user trading activity. Under the setup, developers can build trading interfaces, route orders, or create automation tools, then charge a fee on each position order submitted by users through those integrations. GMX said developers must publish their fee rates on-chain, while traders must sign off on that rate in every order. The fee is added on top of the platform’s standard trading fee and is calculated based on position changes. GMX gave one example: if a position increases by $1,000 and the fee rate is 0.01%, the charge would be $0.10. The final amount is settled to the developer’s claimable vault. Orders submitted through developer-built interfaces will still use the same liquidity pool, oracle pricing, and price impact rules as other orders on the platform. GMX said the feature applies to market and limit increase orders, decrease orders, and stop-loss decrease orders, but not to swaps, liquidations, or ADL.
GMX said on X that it has enabled Builder Fees on Solana.
The mechanism allows third-party developers to build trading interfaces, order-routing systems, or automation tools, and charge a fee on each position order submitted by users.
How the fee works
According to GMX, developers must publish their fee rates on-chain, and traders must sign that rate in every order. The fee is added on top of the standard trading fee and is calculated based on changes in position size.
GMX gave an example: if a position increases by $1,000 and the fee rate is 0.01%, the charge would be $0.10. The proceeds are ultimately settled to the developer’s claimable vault.
Order types covered
GMX said orders submitted through developer interfaces will use the same liquidity pool, oracle prices, and price impact rules as other orders.
Builder Fees apply to market and limit increase orders, decrease orders, and stop-loss decrease orders. They do not apply to swaps, liquidations, or ADL.
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