Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
System PromptArea: what it touches
ImprovementsKind: in v2.1.251,
ImprovementsSection of the release
What
The prompt that tells the model which capabilities it may declare now states that the list is complete and that anything absent is unavailable to you, and separates capabilities needing an explicit declaration from built-ins that are always on.
Details
The contents vary by context, since the capability set is passed in per user and page rather than fixed.
Reworded in this release; the block itself is not new.
Evidence
the complete set of capability names you may declare. Anything not listed is unavailable to this user.
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
