Developers Can Charge Fees from User Orders as GMX Opens Builder Fees Mechanism on Solana

Odaily: GMX 🫐 posted on X that it has opened the Builder Fees mechanism on Solana, allowing third-party developers to build trading interfaces, route orders, or create automation tools and charge fees from each position order submitted by users. Developers need to publish fee rates on-chain, and traders sign the rate in each order; the fee is added on top of the standard trading fee and calculated based on position changes. For example, when a position is increased by $1,000 and the fee rate is 0.01%, $0.10 is charged, with final settlement to the developer's claim vault. Orders submitted through developer interfaces will use the same liquidity pools, oracle prices, and price impact rules as other orders. Builder Fees apply to market and limit orders for increasing positions, decreasing positions, and stop-loss position reductions, but do not apply to swaps, liquidations, or ADL.