Prove a document existed at a time without revealing its content
Beginner8h1
ViemWeb CryptoNext.js
17/20DeFi Loan Health Alerts
Get alerts before your loan gets liquidated.
Beginner10h1 person17/20 fit
Build DeFi Loan Health Alerts for defi borrowers in ~10h with 1 person. Stack: Viem + Node.js + Telegram Bot API.
Why it wins: Saves real money with a small build.
Build flow
01 · Problem
Borrowers lose collateral overnight when prices move.
02 · Solution
Track positions, compute health factor and alert by chat or email with suggested repay amounts.
03 · Build
- 1Read positions
- 2Compute health
- 3Set thresholds
- 4Send alerts
04 · Demo
Lower a price in a simulation and show the alert.
MVP checklist
- Position tracking
- Health factor
- Alerts
- Repay suggestions
Tech stack
| Tech | Role | |
|---|---|---|
| Viem | Ethereum client | Chain |
| Node.js | Backend runtime | Backend |
| Telegram Bot API | External data | API |
Reference repos
Open-source projects you can build on. Links checked 2026-10-31.
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