[Contract] Decentralized Lending and Collateral Manager

[ayomideadeniran]

[Contract] Decentralized Lending and Collateral Manager

🚀 Feature Overview

Implement a compound-style lending protocol where users can deposit collateral to borrow other assets, featuring a robust liquidation engine for undercollateralized positions.

This is a complex, MVP-critical feature designed to elevate the smart contract architecture and expand the educational modules of the Web3 Student Lab platform.

🛠️ Implementation Requirements

• Calculate collateralization ratios dynamically using oracle price feeds.\n- Implement a liquidation function that rewards liquidators.\n- Accrue borrow interest continuously over time.

🔧 Technical Specifications

• Language/Environment: Rust / Soroban (or Solidity if specifically bridging).
• Adherence to strict architectural boundaries and gas optimization.
• High test coverage requirements (>90% unit testing in Rust).
• Prevent common vectors: Reentrancy, Integer Overflow/Underflow, and Oracle Manipulation.

✅ Acceptance Criteria

• Contract implemented according to requirements.
• Comprehensive unit and integration tests passing.
• Security review completed (no critical vulnerabilities).
• Comprehensive documentation written using NatSpec/Rustdoc.

🎓 Difficulty Level

Advanced - Requires deep understanding of Web3 security, cryptography, and smart contract design patterns.

⏱️ Timeline

ETA: 3-5 days

🏷️ Labels

contract, defi, complex, mvp-critical

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Note to Contributors: Break down work into smaller PRs for easier review, focusing on core logic first before adding complex modifiers.

[AYo101o]

@AYo101o has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Hi, I'd like to be assigned this issue!

I have experience with Rust/Soroban and DeFi lending protocol design, including collateralization ratios, oracle price feed integration, and liquidation mechanics. I'll structure the work into incremental PRs core deposit/borrow logic first, then the liquidation engine and interest accrual and ensure >90% test coverage within the 3–5 day timeline.

Could you please assign this to me?

ℹ️ Repo Maintainers: To accept this application, review their application or assign @AYo101o to this issue.

[Creed1759]

@Creed1759 has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

I'm a software dev, may I take on this issue if it's still available?

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Creed1759 to this issue.

[drips-wave]

Congratulations, @Creed1759! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 2, 2026.

🧑‍💻 @Creed1759: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

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🌊 Happy Wave 🌊

[drips-wave]

This issue has been completed by @Creed1759 as part of the Stellar Wave Program's 5th Wave 🥳

😎 @Creed1759: You earned 200 Points for completing this issue! After the current Wave ends, you'll be eligible for a percentage of the Wave's reward pool based on the percentage of total points you've earned. Learn more here. You can also Leave a review to share your experience working on this issue.

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