You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
Cloud GatewayArea: what it touches
RemovedKind: in v2.1.266,
RemovedSection of the release
Unclear the finding doesn't say what, if anything, now determines gateway mode instead, or whether another condition must accompany this variable
What
Claude Code picks an authentication provider internally, such as bedrock, vertex, mantle, firstParty or gateway. Previously, if none of the other provider settings matched, having the CLAUDE_CODE_USE_GATEWAY environment variable set was enough on its own to fall back to gateway mode. That fallback branch has been removed.
Why
Setting CLAUDE_CODE_USE_GATEWAY by itself will no longer cause Claude Code to use the Cloud gateway; anyone relying on that variable alone to select gateway mode should check what else is now required.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtthe finding doesn't say what, if anything, now determines gateway mode instead, or whether another condition must accompany this variable
Anthropic's release notes agreeFixed a 2.1.265 regression affecting LLM-gateway and proxy setups: the undocumented CLAUDE_CODE_USE_GATEWAY environment variable, previously…
