The app never changes your sessions

Claude Code Helper only reads your sessions — it never writes to them, renames them, or deletes them. Copying and exporting create new clipboard text and new files; the originals are left exactly as they were.

This matters because these files are live working data for Claude Code itself. A viewer that altered them could corrupt a session. So you can browse and export freely without any risk to Claude.

The one caveat: don't manually edit a session's underlying file (for example, the one you reach with Show transcript file in folder) while Claude is actively using that session — that's editing live data behind Claude's back, which is a different thing from anything this app does.