Six things we'll never design away.
No app here can take everything
Every app on the wall has at least one of these built in: a partial payout, a refund, safe principal, a sponsor pot, or a floor. The rare all-or-nothing option lives behind Advanced, and says so.
You always know the most you can lose
Before anything moves, the confirm sheet shows the most you can lose, in dollars. On Hyperliquid outcome markets that number is exactly what you pay. Buy a Yes at 43 cents and you can lose 43 cents per token, never more. There's no leverage, no liquidation and no funding.
Your money stays on the chain
Positions live on Hyperliquid, or in Foundry's own contracts on HyperEVM. Foundry's agent key can place orders for you and can't withdraw. If Foundry disappeared tomorrow, your positions wouldn't.
Someone is accountable for every answer
Hyperliquid markets are settled by deployers who staked 500,000 HYPE and lose part of it if they settle wrong or late. Foundry's own markets publish their formula before they open, run a dispute window, and bond their operator.
Fees, in plain sight
Outcome markets charge on close or settlement, never on open. Foundry adds a small builder fee to orders it routes. You approve the maximum once, in dollars per $100, and you can revoke it anytime.
Where you can use this
Some apps are gated by country and age. Free calls work everywhere. Staking doesn't. Each app's page lists its gates.