Haven

Haven is a non-custodial Solana trading application that eliminates forced liquidation by maintaining leveraged positions within a user-defined bracket of loan-to-value (LTV) ratios. Instead of issuing a margin call when collateral value falls toward a liquidation threshold, Haven automatically borrows additional capital or repays debt to keep the position within bounds — at the user's cost, on their behalf, and according to rules they set in advance.

Core Mechanism: Bracketed Leverage

Haven's model replaces the hard liquidation line used by most lending protocols with a soft bracket system. When creating a position, the user sets a minimum LTV and a maximum LTV. The platform then maintains the position within that range through two automatic operations:

Boost rebalance: When LTV falls below the minimum (the position is underleveraged), Haven automatically borrows additional capital and buys more of the position asset. This maintains the user's intended leverage level and reapplies it as asset prices rise.

Repay rebalance: When LTV rises toward the maximum (the position is approaching overleverage), Haven automatically sells a portion of the position asset and repays the outstanding debt, lowering the LTV and creating headroom before any liquidation threshold.

These rebalancing actions happen automatically without user intervention. The user defines the bracket; Haven manages execution within it.

Fee Structure

Haven charges fees on the rebalancing actions rather than on the position itself:

• Boost fees (auto-borrow): Tiered. Positions under $10,000 pay 0.50% per rebalance; positions over $250,000 pay 0.25%.
• Repay fees (auto-sell): Flat 0.25% regardless of position size.

No separate subscription fee or management fee applies. Users pay only when a rebalance action executes.

Underlying Infrastructure

Haven is built on top of two Solana protocols: MarginFi for the lending layer (borrowing and collateral management) and Jupiter for swap execution (the buying and selling performed during rebalances). This means Haven's liquidation-resistant model sits on established, audited Solana infrastructure rather than deploying novel smart contracts for core financial operations.

Supported Strategies

Haven supports three position types: long (buy and hold an asset with leverage), short (borrow and sell an asset, profiting from decline), and ratio (maintain a specific ratio between two assets). Users should be aware that leveraged positions are subject to volatility decay — the mathematical erosion of leveraged exposure over time in choppy markets — which is an inherent property of bracketed leverage strategies rather than a Haven-specific issue.

Security and Team

Haven's smart contracts were audited by Hashlock, an Australian blockchain security firm. The project operates with a solo founder and launched in November 2024.

No native protocol token has been issued. Haven's economy is fee-based, denominated in the assets used by the positions themselves.

Solana Ecosystem Fit

MarginFi's lending infrastructure and Jupiter's aggregated DEX liquidity are two of Solana's most battle-tested DeFi building blocks. By composing on both, Haven can offer a sophisticated leverage product with lower smart contract risk than a comparable protocol built from scratch. The no-liquidation design fills a specific gap in Solana's DeFi landscape: most leveraged trading on Solana still carries standard liquidation risk. Haven's approach trades off fee cost for the elimination of that abrupt downside event — a trade-off that may appeal to position traders managing longer-term leveraged exposure on Solana.