[guessmyname]

There’s actually a lot more environment variables:

edit: removed obnoxious list in favor of the link that @thehamkercat shared below.

My favorite is IS_DEMO=1 to remove a little bit of the unnecessary welcome banner.

[thehamkercat]

https://code.claude.com/docs/en/env-vars

[PufPufPuf]

Curiously this is missing IS_SANDBOX=1 (allows running as root)