CoreVault
CoreVault: Smarter Credit, Safer Lending
Created on 29th June 2025
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CoreVault
CoreVault: Smarter Credit, Safer Lending
The problem CoreVault solves
CoreVault Protocol tackles one of the core challenges in decentralized finance: trustworthy and risk-aware lending without over-collateralization.
Most DeFi lending platforms today require users to lock up more collateral than the loan amount, which discourages real-world utility and limits participation. On top of that, there's no smart evaluation of borrower credibility, leaving lenders vulnerable and limiting capital efficiency.
CoreVault solves this by integrating AI-driven risk scoring (based on borrower profiles like credit score, income, and asset value) directly into the loan approval process. It helps lenders make smarter decisions and allows borrowers with solid financials to access credit without locking excessive collateral.
In addition, CoreVault uses Chainlink Automation and VRF to:
Automatically monitor loan health and trigger liquidation if needed.
Run random audits of loans to maintain accountability and prevent abuse.
With cross-chain messaging support via Chainlink CCIP, CoreVault can be scaled beyond a single network, enabling lending against tokenized RWAs across ecosystems.
In short, CoreVault makes DeFi lending:
Smarter with AI
Fairer with real-world risk checks
Safer through automation and randomness
Cross-chain compatible for real scalability
Challenges we ran into
We faced several technical and architectural challenges while building CoreVault Protocol:
1- Vercel API Deployment Issues:
Our AI risk scoring model was written in Python and hosted on Vercel. Initially, we ran into multiple 401 and 500 errors when trying to invoke the endpoint using Chainlink Functions. After digging through Vercel logs, we realized the issue was with the handler function not being Flask-compatible. We rewrote it using Flask, defined proper routes, and ensured that the Chainlink node could parse the JSON response. That finally gave us a working endpoint with a 200 OK.
2- Hardhat VRF Integration Errors:
While integrating Chainlink VRF into our smart contract, we encountered import path errors due to missing PlusInterface files in the installed version of @chainlink/contracts. We resolved this by downgrading to a stable version (1.4.0) and adjusting the contract to use VRFCoordinatorV2Interface instead.
3- Chainlink Functions Configuration Confusion:
The Chainlink Functions examples had a lot of different structure files, and configuring the functions-request-config.js correctly took time. Matching the right secrets, args, and response decoding was a bit trial-and-error initially, but after some testing, we had it working reliably.
Despite the hiccups, every challenge helped us understand the stack better — especially around Chainlink Functions, automation, and deployment.
Tracks Applied (4)
Onchain Finance
Cross-Chain Solutions
Best Use of ElizaOS
ElizaOS
Avalanche Track
Avalanche