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Introduction

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Overview

Buoy.Loan is a decentralized, self-repaying loan platform built on HyperEVM that enables users to borrow stable assets against staked HYPE tokens—without risk of liquidation. Rather than relying on external collateral auctions or forced repayments, Buoy.Loan uses validator staking rewards to gradually repay borrowed funds, creating a sustainable, no-liquidation borrowing experience.

By staking HYPE tokens with Buoy, users help secure the HyperEVM network while simultaneously unlocking liquidity through protocol-backed borrowing. Over time, validator rewards automatically flow toward repaying the loan, allowing users to regain full ownership of their staked position without manual repayment or liquidation risk.

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Key Features

  • Self-Repaying Loans: Loan balances automatically decrease over time as staking rewards are applied toward repayment.

  • No Liquidation Risk: Borrowers never lose their collateral—even if market prices move unfavorably.

  • Low LTV (10%): The protocol allows borrowing up to 10% of the USD value of staked HYPE tokens, ensuring safety and system integrity.

  • Dual Stablecoin Support: Borrowers can choose between USDh (HyperEVM-native stablecoin) or USDC as their loan currency.

  • Validator-Backed Repayment: Validator rewards are redirected to liquidity providers, creating a yield-backed repayment stream.

  • Liquid Markets via Morpho Vaults: Buoy integrates with Morpho liquidity vaults that maintain buoyUSD/USDC and buoyUSD/USDh markets, offering deep on-chain liquidity and seamless conversions.

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Core Principles

Buoy.Loan is built on the principle of secure, yield-powered self-repayment — a design that eliminates liquidation risk entirely. The protocol transforms validator staking rewards into an automated repayment mechanism, ensuring that every borrower’s debt decreases naturally over time without manual intervention or exposure to collateral volatility.

  1. Validator-Driven Repayment: Every loan is backed by actively staked HYPE tokens. The validator’s staking rewards are automatically routed to repay outstanding borrow balances, allowing positions to self-heal over time.

  2. No Liquidation by Design: The Buoy architecture eliminates the concept of liquidation altogether. Each loan uses conservative parameters (10% LTV) and relies solely on validator earnings to cover interest obligations, guaranteeing that borrowers maintain full ownership of their staked assets regardless of market conditions.

  3. Institutional-Scale Security: Buoy.Loan is designed for users and institutions who wish to stake significant capital without incurring liquidation risk. All collateral remains locked in a validator-secured environment, while the protocol ensures transparent, verifiable control over reward flows and repayments.

  4. Sustainable Credit Layer: By aligning validator performance with borrower success, Buoy creates a self-sustaining credit ecosystem — where network security, yield, and capital efficiency reinforce each other without exposing users to cascading liquidation events.

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System Architecture Overview

At its core, Buoy.Loan combines three subsystems:

  1. Staking Layer: Where users delegate HYPE tokens to Buoy’s validator.

  2. Minting Layer: Where the protocol mints buoyUSD (the internal credit asset) representing up to 10% of the staked value.

  3. Liquidity Layer: Where buoyUSD is converted into USDC or USDh via Morpho vaults, providing instant, market-based borrowing for users.

The interaction between these layers enables a circular flow of capital — staking generates yield → yield repays loans → capital returns to users — forming a self-sustaining credit loop native to HyperEVM.

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