Anthropic staffer recommends cleaning up your Claude Code setup every six months

Boris Cherny from Anthropic has a clear recommendation for anyone using Claude Code: clean up your setup every six months.

Concretely, that means deleting your CLAUDE.md, your Skills and your hooks. Then see what the current model can handle without the fixes you once made for an older version.

The point is simple. An instruction that solved a problem six months ago is not automatically still necessary. Models get better, and what you once had to compensate for, the model may now be able to handle on its own.

For you, this means: if your Claude Code setup is more than six months old, it is a good time to test it. Not because anything is necessarily wrong, but because you may be able to simplify and get better results with less hassle.