For cache diagnostics, a response to a request that sends the cache-diagnosis-2026-04-07 beta header now…

By Steven Van · 2026-09-18

Requests using the cache-diagnosis beta header get a consistent diagnostics field, and Compliance API sessions now cover Claude in Chrome.

Two small API changes landed for Anthropic's Claude Platform on September 18.

In cache diagnostics, a response to a request sending the cache-diagnosis-2026-04-07 beta header now always includes the diagnostics field. It's null when the request didn't include the diagnostics object; previously the field was omitted in that case instead.
The Compliance API's local session endpoints now also return transcripts of Claude in Chrome sessions (product_surface value claude_in_chrome), in beta for Claude Enterprise organizations, using an existing Compliance Access Key and the read:compliance_user_data scope.

Anthropic

Anthropic is an AI safety and research company that's working to build reliable, interpretable, and steerable AI systems.

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