$JUP I tested the SOL to USDC Market flow and tried to start from a fixed USDC receive amount, but the swap only accepts the sell-side amount. Jupiter support docs say ExactOut was removed because it often gave worse pricing. A useful middle ground could be a target receive planner: enter 100 USDC, show the estimated SOL needed or range, then execute through the normal optimized route. That keeps pricing protection while making payments and rebalancing easier to plan.