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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.248

Sudo npm install notice reads the env var live

Use it now
Useful3 Signal2
Installation not in their notes

The sudo npm install notice reads DISABLE_INSTALLATION_CHECKS live, so any set value hides it.

DISABLE_INSTALLATION_CHECKS
What

The notice shown when Claude Code was installed with sudo npm now reads DISABLE_INSTALLATION_CHECKS straight from the environment through a truthiness helper, so any set value suppresses it.

Evidence

sudo_npm_install_notice

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.248 →