Are you a crypto consumer app with a big userbase, but struggle with revenue? Call 1-800-HYPERLIQUID. Builder codes let any app route orders into @HyperliquidX's orderbook, tag them with its own address, and charge a fee on top of the normal trading fee. The user approves a max rate once, and from there it settles in $USDC as trades fill. You don't run matching, liquidity, oracles, or liquidations - you bring the interface and the users, and the exchange handles everything behind it. The leaderboard shows what that looks like in practice. Other app earned $95M total in revenue from integration of builder codes. @phantom did $237.3K in a week on $415.9M of volume, @MetaMask $230.5K on $266.8M, both just added a tab to an app people already had open. Builder codes remove the cost of building an exchange, but not the need for users who actually want to trade. If your userbase has that intent sitting idle, it's the cheapest revenue line in crypto right now.