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Engineering Case Study
Vacuum: Solana Automated Rent Reclaim Protocol
Reclaiming trapped crypto deposits from inactive Solana accounts automatically and safely across CLI, SDK, and Web.
500+ NPM Downloads
Weekly Installs
CLI, Developer SDK, Web, Telegram Bot
Interfaces
Dry-Run Simulation Mode
Safety
Solana Infrastructure
Ecosystem
The
Challenge
Solana applications must deposit a small baseline SOL rent (0.002 SOL) to open token accounts. When users drain token balances and abandon accounts, these SOL deposits remain locked indefinitely. For high-volume protocols, thousands of dollars in capital remain trapped in zero-balance accounts.
The
Strategy
I developed Vacuum: an automated cleanup protocol that scans the blockchain for zero-balance token accounts and safely closes them to recover locked rent SOL:
1. On-Chain Account Layout Parsing
Scans blockchain state using
Terminal Workspace
getProgramAccountsTerminal Workspace
amount == 02. Multi-Instruction Batching & Dry-Run Simulation
Combines up to 20
Terminal Workspace
closeAccountTechnology Infrastructure
TypeScriptSolana Web3 SDKReact 19Tailwind CSS 4SQLiteNode.jsTelegram Bot API
Key
Outcomes
- Outcome 01
Helped platform operators safely recover thousands of dollars in trapped SOL rent deposits.
- Outcome 02
Gained strong developer adoption, exceeding 500+ weekly downloads on the NPM registry.
- Outcome 03
Included a safety "dry-run" preview mode so operators can verify recoverable balances before executing.
- Outcome 04
Delivered flexible access options: an automated background command, a developer integration toolkit, a Telegram bot, and a visual web dashboard.