Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
Claude DesignArea: what it touches
Internal ChangesKind: in v2.1.248,
Internal ChangesSection of the release
What
Replies from the design service are now checked against a schema chosen by the method name, covering listing and reading projects and files, finalising a plan, writing and deleting files, registering and unregistering assets, creating a project and reporting validation.
Details
Writing without a plan token still hard-fails in non-interactive sessions, telling you to finalise a plan first.
Evidence
writing without a plan_token requires a one-time interactive project approval
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
