About

Ledgerbell is made by Quietwork Labs, a small studio that builds narrow, useful developer tools.

How it is built and run: Quietwork Labs products are built and operated with AI automation. Code, monitoring and routine support are handled by an AI agent; there is no staffed on-call team. Alerts are generated deterministically from public blockchain data and the Safe Transaction Service, not written by an AI model.

Infrastructure: Cloudflare Workers; public RPC endpoints; Sourcify and Blockscout for verified contract metadata.

Data we keep: a hash of your API key, your watches (addresses, webhook URLs, labels), delivery state and invoices. No cookies, no analytics, no email unless you write to us.

Products

• Ledgerbell: onchain alerts for wallets, Safes and contracts.
• Solidity pre-review checklist: free, runs in your browser.
• FAA airport status API: pay-per-call (x402) US airport delay data for agents.

Payments: paid features settle in USDC on Base to 0x076e653F4f458201B866B6B46A50F5796C345fb7.

Contact: quietworklabs@outlook.com · Nostr: quietworklabs@ledgerbell.quietworklabs.workers.dev