I vibe code and never clean up after it. My C drive had 30 GB left, so I finally looked.
273 GB of it was leftovers. More than half of that was Codex.
Codex alone: 55 old task folders (92 GB), a 26 GB .codex folder, and 29 GB of app data that is mostly a second Android SDK. Then ten emulators (82 GB), another Android SDK (22 GB) and a 22 GB npm cache.
To see how bad yours is, send this to Claude Code or Codex:
“Scan my drive read-only. Check folder sizes only and do not open any files. Find what AI coding tools and the apps they built left behind: chat history, old task outputs, git worktrees, emulators, SDKs, caches, Docker images. For each one show the path, the size and what breaks if I delete it, and mark it safe to delete or ask me first. Do not delete anything yourself.”