Hobba

Hobba is a self-repaying lending protocol on Solana designed to make borrowing cheaper and more capital-efficient. Rather than issuing a straightforward collateralized loan, Hobba routes borrows across multiple established Solana lending protocols simultaneously to secure the lowest available interest rate, while also putting the borrower's collateral to work generating yield. When that yield exceeds the cost of the debt, the surplus automatically chips away at the outstanding loan balance, allowing debts to shrink and, in favorable market conditions, eventually disappear without the user ever making a manual repayment.

The Self-Repaying Mechanism

The central innovation distinguishing Hobba from standard Solana lending protocols is two-sided yield optimization. On the liability side, Hobba aggregates borrow rates across Kamino, MarginFi, Jupiter's lending arm (Juplend), and Perena, always routing to whichever combination of protocols offers the cheapest borrowing at any given moment. On the asset side, deposited collateral is not left idle: Hobba deploys it into yield-bearing strategies within those same audited protocols. The net result is a negative effective borrowing cost when conditions allow. Hobba has demonstrated a net borrow APY of approximately -5.6%, compared to baseline market rates of around 4-6% on competing standalone platforms.

Daily, any accumulated yield is harvested and applied first to reduce the outstanding loan balance, with a minimum daily harvest of $1. Once a borrower has fully repaid their debt, any further earnings are converted to USDC and sent directly to their wallet, turning the protocol into a passive yield vehicle for fully repaid users.

Supported Assets and Loan Parameters

Hobba currently accepts two collateral types: SOL (Solana's native asset) and cbBTC (Coinbase's wrapped Bitcoin on Solana). Users borrow in USDC. The protocol recommends keeping a loan-to-value (LTV) ratio below 40% for passive positions where the Sonnar risk engine handles all monitoring and optimization without user intervention. Positions above 40% LTV are possible but carry higher risk given Solana asset price volatility and require closer active monitoring.

Internally, Hobba may push collateral utilization up to a 60% LTV target in order to generate the additional yield that funds debt repayment, a lever that Sonnar manages automatically on the user's behalf. Deposits and withdrawals carry no lock-up periods and are quoted as instant and fee-free.

Sonnar: The Risk Engine

The proprietary component at Hobba's core is Sonnar, a purpose-built onchain risk management system. Sonnar monitors every position at block resolution, continuously tracking collateral value, pool liquidity, prevailing interest rates, and real-time LTV, and takes automated action when conditions change. In a market downturn, Sonnar de-leverages the position by repaying portions of the debt or adjusting protocol routing before the collateral reaches liquidation territory. When conditions recover, it re-optimizes to restore the yield-generation posture.

Sonnar operates on isolated positions with no shared vaults and no socialized losses, meaning one user's position cannot negatively affect another's. Each borrower's risk envelope is managed independently.

Integrated Protocols

Hobba acts as a prime borrowing broker sitting on top of Solana's existing DeFi lending infrastructure rather than building its own liquidity pools from scratch. The integrated protocols are Kamino Finance, MarginFi, Jupiter's Juplend, and Perena, all established and independently audited platforms. This aggregator model means Hobba inherits the liquidity depth of the broader Solana lending ecosystem while adding routing, automation, and risk management on top. Users benefit from the combined depth of multiple markets without having to manage accounts across each protocol themselves.

Security and Audits

The Hobba smart contracts and protocol integrations have been audited by Ackee Blockchain Security, a firm specializing in Solana program security. The audit covered Hobba's prime broker mechanics and its integrations with the underlying lending protocols, and the full audit report is publicly available on the Hobba website.

Team and Background

Hobba was founded by Igor Jerkovic, a software engineer building on Solana. The project originated under the name DeFi Koala before being rebranded and rebuilt as Hobba. Jerkovic competed with the early DeFi Koala concept at Money Motion, a fundraising and startup competition, before returning with the Hobba iteration and winning the event. The project has a connection to Superteam Balkan, the regional arm of the Solana Superteam builder network, which ran a product feedback bounty for Hobba in mid-2026 with a prize pool of 1,500 USDC that drew 36 submissions. The GitHub repository for the protocol is maintained under the handle ijerkovic.

Hobba is founder-led at this stage with no public information about additional team members or venture funding rounds.

Hackathon Recognition

Hobba appeared as a finalist at the Solana Cypherpunk Hackathon, placing in the payments and social DeFi track. The project also took second place at the Buildstation event. These appearances in Solana hackathon and competition circuits reflect the project's emergence from within the Solana builder community.

Token

Hobba has not launched an official protocol token. A token using the HOBBA ticker exists on Solana with a contract address ending in the pump.fun suffix, indicating it was created on the pump.fun meme coin launchpad rather than by the Hobba team. No official tokenomics documentation has been published by the project, and the existing HOBBA token should be treated as a community-created asset unaffiliated with the protocol.

Solana Fit

Hobba's design is natively Solana-first. The speed and composability of Solana's DeFi ecosystem make the block-by-block risk monitoring and cross-protocol borrow routing that Sonnar performs practically feasible, operations that would be prohibitively expensive on slower or higher-fee networks. The protocol's dependence on Kamino, MarginFi, and Jupiter places it inside the dense composability layer of Solana DeFi, where it adds an optimization and automation layer that individual users would otherwise have to manage manually across multiple separate interfaces.

Founded in October 2025 and actively building through mid-2026, Hobba sits at an early stage in the development of yield-bearing and self-amortizing debt products on Solana, a design space that has seen significant interest as Solana's DeFi lending sector has matured.