Hylo Protocol is a decentralized finance (DeFi) protocol built on the Solana blockchain that provides a stablecoin system and leveraged asset exposure without reliance on traditional financial infrastructure or real-world assets. The protocol’s architecture is centered on a symbiotic token model where a decentralized stablecoin, hyUSD, and a token providing leveraged exposure to SOL, xSOL, are both backed by a single, shared collateral pool of Solana Liquid Staking Tokens (LSTs). ^{[1] [2]}

Overview

Hylo Protocol is designed to be a self-sufficient and autonomous financial system native to the Solana ecosystem. Its primary objective is to create a scalable and decentralized stablecoin, hyUSD, that derives its backing from on-chain, yield-bearing assets rather than off-chain assets like fiat currency or real-world assets (RWAs). ^[3] The protocol is guided by four core principles: being Solana Native, fully Decentralized, Permissionless, and Secure. ^[1]

The protocol's model features two primary tokens, hyUSD and xSOL, which cater to different risk appetites but are intrinsically linked. Both are minted from and collateralized by a shared pool of Solana LSTs. This design allows for what the project describes as "slippage-free liquidity" between its core assets and creates a self-balancing system. ^{[1] [4]} A key feature of its architecture is an oracle-free design for its core minting and redemption functions, which mitigates risks associated with oracle manipulation or failure. While external oracles like the Pyth Network are used for integrating Hylo assets into the broader DeFi ecosystem, they are not required for the protocol's internal stability. ^[2] The protocol also includes a staked version of its stablecoin, sHYUSD, which allows holders to earn yield generated from the underlying LST collateral. ^[3]

History

Founded in 2024, Hylo Protocol gained early recognition within the Solana developer community. The project won second place in the payment track of the Solana Radar hackathon, a competition that had over 1,359 project submissions. It was also one of 13 startups selected for the second cohort of the Colosseum Accelerator, an intensive program for projects building on Solana. In addition to support from the accelerator and a grant from the Solana Foundation, Hylo announced on August 7, 2025, that it had raised $1.5 million in a seed funding round. Investors included Robot Ventures, Solana Ventures, YTWO, and Colosseum. ^{[3] [6] [7]}

During this period, Hylo achieved several key milestones. On September 15, 2025, its on-chain fee and revenue data became tracked on the DefiLlama dashboard. On October 24, price feeds for its core assets, hyUSD, xSOL, and sHYUSD, went live on the Pyth Network, enabling wider integration across other DeFi protocols. By November 19, 2025, its cumulative on-chain protocol revenue had surpassed $1.18 million. Further integrations occurred throughout the fall, including the approval of its assets as collateral on the Loopscale lending protocol on November 14 and the launch of a joint incentive program with Jito on November 15. ^{[2] [6]}

Technology and Mechanics

Hylo's architecture is designed to be fully on-chain, autonomous, and self-contained, operating without a fund manager or external trading dependencies for its core functions. The code is written in Rust using the Anchor framework and is open-source. ^{[3] [1]}

Shared Collateral Pool

The foundation of the Hylo protocol is a single, shared collateral pool composed entirely of a basket of yield-bearing Solana Liquid Staking Tokens (LSTs). The protocol supports a basket of LSTs, initially including JitoSOL (Jito), mSOL (Marinade), and bSOL (BlazeStake). When users deposit assets such as USDC, USDT, or SOL to mint protocol tokens, these assets are automatically converted by the protocol into the constituent LSTs of the pool. For a period in its early launch phase, all collateral was converted into JitoSOL. ^[3]

This LST collateral continues to earn staking rewards from the Solana network, providing an endogenous, or native, source of real yield for the protocol. This yield is used to generate returns for sHYUSD stakers. By utilizing LSTs, Hylo directly contributes to the security and decentralization of the Solana network. As of October 2025, the protocol's backing reserve was reported to be the 8th largest holder of JitoSOL. ^{[3] [2]}

The protocol is designed to be fully collateralized, meaning the total value of the LSTs in the collateral pool is equal to the combined value of the entire hyUSD and xSOL supply. This relationship can be expressed with the formula: Collateral TVL = Value of hyUSD Supply + Value of xSOL Supply. ^{[4] [7]}

Symbiotic Token Model

The protocol includes three interdependent tokens that cater to different user strategies and risk profiles, all of which are derived from the shared collateral pool. ^[3]

hyUSD (Stablecoin)

Hylo USD (hyUSD) is the protocol's native, decentralized stablecoin, designed to be pegged 1:1 to the US dollar. It is over-collateralized by the LSTs in the shared pool. ^[5] Its stability is maintained through a redemption mechanism that allows any user to redeem 1 hyUSD for exactly 1.00. The protocol charges a 1% fee for both minting and redeeming hyUSD, which serves to generate revenue and discourage high-frequency speculative arbitrage. As of November 2025, the circulating supply of hyUSD was approximately $37.7 million. ^{[3] [2]}

xSOL (Leveraged Token)

The xSOL token is designed to provide users with leveraged, long-term exposure to the price of SOL. It is a synthetic asset that tracks the price of SOL with amplified volatility. The leverage is implicitly derived from the protocol's over-collateralization. The value of xSOL represents the equity, or surplus value, in the collateral pool after accounting for the protocol's stable liabilities (the hyUSD supply). Any appreciation or depreciation in the market value of the LST collateral portfolio is absorbed by the price of xSOL. ^{[5] [3]}

A key feature of xSOL is that it does not involve a debt position for the holder. This means there is no risk of forced liquidation and no recurring funding fees, which differentiates it from leveraged positions on perpetual futures exchanges. While the value of xSOL can decline significantly if the price of SOL falls, the position itself remains intact. The leverage provided is dynamic and dependent on the ratio of xSOL's market cap to the total collateral value; for instance, at certain points, the observed leverage has been approximately 2.2x. ^{[4] [3]}

sHYUSD (Staked hyUSD)

sHYUSD is the interest-bearing token a user receives when staking hyUSD in the protocol's "Earn" vault. Holders of sHYUSD receive a share of the staking rewards generated by the entire LST collateral pool. In November 2025, the reported real yield Annual Percentage Yield (APY) for sHYUSD stakers was between 17% and 19%. ^{[2] [3]}

In addition to providing yield, sHYUSD serves as a critical component of the protocol's risk management system, acting as a "last line of defense." In the event of a severe market crash where the value of the xSOL buffer is fully depleted, the protocol has the authority to convert sHYUSD into xSOL. This mechanism is designed to recapitalize the system and protect the hyUSD peg. This places sHYUSD holders in a higher-risk, higher-reward position compared to simply holding hyUSD. ^[3]

Additional Protocol Tokens

Hylo also issues its own native liquid staking tokens, hyloSOL and hyloSOL+. These tokens can be held for staking yield or used as collateral within the Hylo protocol and other platforms in the Solana ecosystem. In September 2025, Sanctum, a protocol that monitors LST performance, recognized hyloSOL for achieving a top-performing annual percentage yield (APY) of 11%. ^{[1] [2]}

Security

The Hylo protocol's smart contracts have undergone a security audit by the firm OtterSec. The development team also utilizes quantitative risk assessment methods, such as Monte Carlo simulations, for protocol modeling and stress testing. To ensure transparency, the project maintains a publicly available list of official on-chain program and token addresses in its documentation. ^{[3] [1]}

Adoption and Ecosystem

Market Performance and Revenue

Hylo experienced rapid growth after its launch. As of November 19, 2025, the protocol's Total Value Locked (TVL) reached $54.04 million, all on the Solana blockchain. During this period, the protocol's financial performance showed significant traction, with cumulative fees reaching $1.85 million and cumulative revenue at $1.18 million. The annualized revenue based on a 30-day average was approximately $4.05 million. The protocol's revenue is generated from swap fees and a portion of the yield from its LST reserves. ^[6]

Ecosystem Integrations

Hylo has integrated with several key protocols within the Solana DeFi ecosystem to expand the utility of its assets. These integrations include:

• Pyth Network: Provides price feeds for hyUSD, xSOL, and sHYUSD, enabling their use as collateral and trading pairs on other DeFi protocols.
• Jito: Hylo is a major holder of Jito's LST, JitoSOL, and has engaged in a joint incentive program offering JTO rewards to liquidity providers.
• Kamino Finance: Hosts automated liquidity vaults for Hylo token pairs, such as hyUSD-JitoSOL and hyUSD-USDC.
• Loopscale: A lending protocol that approved Hylo-related liquidity provider (LP) tokens (from Exponent Finance) as collateral.
• Titan DEX: A decentralized exchange that integrated Hylo assets to improve the trading experience.
• DefiLlama: A data aggregator that tracks Hylo’s TVL, fees, and on-chain revenue.
• Sanctum: A protocol focused on LSTs that has recognized the performance of Hylo's native liquid staking token, hyloSOL.

This list of integrations provides a snapshot of the protocol's position within the broader Solana ecosystem. ^{[2] [4]}

Community Programs

To incentivize early adoption and bootstrap liquidity, Hylo launched a points program referred to as "Season 0." The program rewards users with "XP" for holding protocol-native assets, including hyUSD, sHYUSD, and xSOL. The earning rates are 5 XP per dollar of hyUSD held per day and 1 XP per dollar of sHYUSD held per day. The program also includes a referral system where users can earn an additional 10% of the XP accumulated by their referees. This points system is widely interpreted as a precursor to a future airdrop of a governance token. ^{[3] [1]}

Key Personnel

As of late 2025, the publicly known members of the Hylo Protocol team include:

• Plish: CEO
• Sape: Head of Growth
• Shoom: Team Member ^[2]

Risks and Considerations

Several risks are associated with the Hylo Protocol's design and market position.

• Systemic Risk from LST Dependency: The protocol's single greatest risk is its exclusive reliance on Solana LSTs for collateral. A smart contract vulnerability, de-pegging event, validator slashing incident, or governance failure within a major underlying LST protocol (such as Jito) would directly and adversely affect the value of Hylo's collateral pool, threatening the solvency of the entire system.
• Economic Model Risk: The symbiotic three-token model is complex and could be vulnerable to "black swan" market events. A scenario involving a rapid, steep decline in the price of SOL combined with mass redemptions of hyUSD could potentially exhaust the xSOL and sHYUSD capital buffers faster than the system can rebalance, leading to a "death spiral" or a de-pegging of hyUSD.
• Centralization Risk: In its early phase, the protocol is controlled by the core development team. While a transition to a decentralized autonomous organization (DAO) is a common goal for such projects, the specific timeline and mechanics for this transition were not yet clear as of late 2025.
• Community and Communication Risk: In its early stages, the protocol was noted for a lack of easily accessible official community channels, such as Discord or Telegram, which could hinder user support, trust, and adoption. ^[3]
• Peg Fluctuation: The 1% fee on both minting and redeeming hyUSD, while a source of revenue and a deterrent against speculation, creates a natural price band (e.g., between approximately $0.99 and $1.01) where the price can float without triggering profitable arbitrage, leading to minor but persistent deviations from the $1.00 peg. ^[3]