What
The deprecation notice for inferenceGatewayAuthScheme: "sso" now says the original spelling will keep working and that no end date has been set.
Before, it warned that browser sign-in would no longer be inferred from this value and that inference would not start.
Why
If your configuration still uses "sso", nothing is set to break. You no longer need to rush to change it.
Names in the bundleinferenceGatewayAuthScheme
Documented inclaude-docs/cowork/changelog
The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.
Confirmed since
Anthropic's documentation has since written up inferenceGatewayAuthScheme, on Configuration changelog.
* The deprecation notices for these spellings, which stopped being accepted on October 7, 2026 and are listed under v1.40609.0: header maps written as a string or list, `inferenceGatewayAuthScheme: "auto"`, `ask-session`, the older `manage…third-party/claude-desktop/configuration-changelog see the edit
One source agreesOne thing we can check says the same as this entry.
Anthropic's documentation agrees
Anthropic's documentation has since written up inferenceGatewayAuthScheme, on Configuration changelog.