A new advisor tool mechanism can announce its availability to the model, gated off by default behind a feature flag
What
A new "advisor tool" mechanism has been added. It can send the model an attachment (attachment.type === "advisor_tool") telling it whether an advisor tool is or isn't currently available, with messages like "The advisor tool is no longer available" or "is available". A new "advisor_tool" category token was also added to several of the internal lists used for telemetry and context-injection categorization, alongside existing tokens like remote_session_change.
Why
The feature is controlled by a feature gate and is off by default, so it doesn't affect current sessions, but lays groundwork for Claude to be told when an advisor tool becomes available to it.
tengu_reflective_wolf Not enough to sayNothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.
This account: no value returned · anonymous baseline: off · compiled default in v2.1.265: not a boolean we can read
Read once, for one account on one subscription tier, against v2.1.265. It isn't a statement about your account. What a flag value here can and cannot tell you
The gate `tengu_reflective_wolf` was read off for this site's account and the anonymous baseline before this release; no reading has been…