• 20+ browser-native dev tools — JSON formatter, JWT decoder, regex tester and more — every tool that can run client-side does, with zero network requests.
• Two Pro/AI tools (SQL explainer, stack trace explainer) call Claude server-side; everything else stays entirely in the browser.

The dev tab you never close. Built to replace the dozen sketchy single-purpose sites developers paste sensitive data into daily — every client-side-capable tool runs fully in-browser with a verifiable zero-request network tab, no server round-trip for your JSON, JWTs, or regex.