Introducing WeissFi: A Flexible Approach to On-Chain Borrowing on Sui

Harvey -

Explore WeissFi, a flexible decentralized lending protocol on Sui with user-set interest rates and real yield via Stability Pools.

As DeFi matures, lending protocols are shifting focus toward capital efficiency, user flexibility, and transparent mechanisms. WeissFi, a lending platform built on the Sui Blockchain, introduces a notable shift in this space by offering user-defined interest rates and an efficient liquidation mechanism, drawing clear inspiration from Liquity V2.

This article breaks down how WeissFi works, what makes it different, and what users can expect when borrowing or earning through the protocol.

What is WeissFi?

WeissFi is a decentralized borrowing protocol that allows users to borrow a native stablecoin called $DORI using $SUI as collateral. The standout feature? Borrowers define their own interest rate, instead of relying on governance-set or algorithmic rates.

This means users have more control over how much they pay to borrow, when they repay, and how they manage their exposure, offering a much more flexible approach to on-chain credit markets.

Key Features at a Glance

  • Custom Interest Rates – Borrowers determine their own annual interest rate.
  • Instant Borrowing – $DORI is minted instantly when $SUI is deposited as collateral.
  • No Counterparty Risk – The protocol is non-custodial and fully on-chain.
  • Flexible Repayments – Repay at any time, without fixed terms.
  • Stability Pools – Absorb liquidations and distribute interest revenue.
  • Built on Sui – Low fees, parallel execution, and fast confirmation.

Borrowing on WeissFi

To borrow, users deposit $SUI into a vault and mint $DORI against it. Borrowers specify the interest rate they’re willing to pay, which is added to the debt over time.

A 7-day interest prepayment is required whenever the interest rate is set or modified. This deters frequent rate adjustments and ensures fair compensation for Stability Pool participants.

Borrowers must maintain an LTV below 90% to avoid liquidation. If breached, collateral is redistributed via the Stability Pool without auctions or third-party liquidators.

Liquidation Fee Breakdown:

  • 6% total fee on collateral  

85% to Stability Pool
15% to the WeissFi team

Earning with WeissFi

WeissFi's Stability Pools enable users to earn real yield by depositing $DORI.

Yield Sources:

  • Interest from borrowers – 20% of all borrower-paid interest is distributed to depositors.
  • Liquidation gains – Depositors receive a share of $SUI from liquidated Troves.

There are no lockups, and users can withdraw their funds at any time.

Unlike protocols that rely on token emissions, WeissFi’s yield is fully derived from protocol activity, offering a more sustainable alternative.

Transparent Fee Structure

Fee Type

Description

Borrowing Fee

0.75% per $DORI borrowed, added to the loan.

Interest Prepay

7 days of interest upfront for new or modified loans.

Interest Split

75% to Stability Pool, 25% to Liquidity Providers.

Liquidation Fee

6% of collateral (85% to Stability Pool, 15% to team).

Redemption Fee

Dynamic rate (baseRate) tied to $DORI price stability mechanics.

WeissFi uses a baseRate decay model (6-hour half-life) to manage redemptions when $DORI dips below $1, keeping the stablecoin near peg.

Points System

WeissFi tracks user contributions through a Points System. Points accumulate for:

  • Borrowing (Vaults) – Best for long-term point growth (exponential scaling).
  • Staking (Stability Pool) – Faster point gain early on.
  • Provide Liquidity to the DORI/USDC pair on FlowX Finance - Best for point increase.

Points are stored on-chain, resume from the last state when reactivated, and may unlock future incentives such as rewards, governance rights, and boosted yields.

Comparing WeissFi to Traditional Lending Models

Feature

Traditional Lending

WeissFi

Interest Rate

Algorithmic or Governance

User-Defined

Yield for Depositors

Token Emissions

Protocol Revenue + Liquidation Gains

Liquidations

Auctions

Stability Pools

Blockchain

Ethereum/others

Sui (low fees, high speed)

Flexibility

Fixed terms or variable

Fully customizable

Final Thoughts

WeissFi introduces a borrower-centric approach to DeFi lending by giving users control over interest rates and repayment timing. Built on the Sui Blockchain, it combines capital efficiency, yield sustainability, and smart liquidation protections in a way that differs from many existing lending platforms.

As always, users should be mindful of smart contract risks and manage leverage appropriately. But for those exploring new DeFi primitives on Sui, WeissFi is worth a closer look.

Weiss Finance official links:

X: https://x.com/weiss_fi 

Website: https://www.weiss.finance/ 

Telegram: https://t.me/weissfi 

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