Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
API RequestsArea: what it touches
Internal ChangesKind: in v2.1.286,
Internal ChangesSection of the release
What
Claude Code makes a request to /api/claude_code_penguin_mode on Anthropic's API. That request now includes a User-Agent header, a line that names the program making the request. It previously carried only the login and API headers.
Why
This is a small change, but anything that inspects Claude Code's outgoing traffic, such as a corporate proxy, will now see this request identified.