Open a position

Choose collateral

Fuel Earn accepts only the configured FUEL and stFUEL assets. Deposit eligibility is based on the selected asset's current wallet balance. Amounts use exact nine-decimal conversion; the slider and 25%, 50%, and Max presets never exceed that balance.

Review the estimate

The interface uses the last validated O2 observation for seamless estimates. An older observation is labeled Last O2 PriceFeed. Estimates are informational and never authorize a transaction.

Confirm a fresh quote

When you select Deposit, the app requests a new uncached signed quote. It validates the collateral asset and Vault contract bindings before asking for wallet approval. The Vault then verifies signature, domain, expiry, and one-use nonce on-chain.

A stale, unavailable, invalid, future-dated, inverted, or excessive-spread source fails closed. No position opens.

Confirmation

After finality, the success receipt shows:

• collateral committed
• selected term
• exact signed opening price
• fixed USDC return
• expected maturity
• transaction link

The app then opens My positions, where the newly minted position NFT is read directly from your wallet.