Debug

This automates the tedious cycle of adding console.logs, asking users to open DevTools, reproduce bugs, and copy-paste output back to you. Instead, it spins up a local log server that captures runtime evidence server-side so you can read it directly. You instrument code with hypotheses (is userId null? is score a string instead of number?), user reproduces the issue once, and you analyze the logs to confirm or reject each theory. Works across JavaScript, TypeScript, and Python. The workflow is structured around evidence over guessing: no fixes until logs prove the root cause, no cleanup until post-fix logs confirm success. Best for state bugs, async timing issues, and anything where you'd normally be playing telephone with the browser console.

Install to Claude Code

npx -y skills add vltansky/debug-skill --skill debug --agent claude-code