You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
SkillsArea: what it touches
In DevelopmentKind: in v2.1.238,
In DevelopmentSection of the release
What
The design skill's instructions were tightened and given new rules, including what to do when no human is available to answer questions: commit to one direction and build the deliverable. Publishing now requires a file path, a one-line description and a one or two emoji favicon, repeated on every republish. The skill ships inside a payload behind the flag tengu_ethereal_nova, so whether you see it is decided by server configuration.
Details
Explicit frame sizes are specified: phone 390x844, desktop 1440x900, with print work authored at 96 pixels per inch.
Artboards are required to share no state at runtime, and the dataviz helper is to be loaded for charts.
The page seeder now warns when a template value is followed by a ternary inside a style attribute, which silently renders as invalid CSS, and when artboards overlap.
The seeder tolerates a published page whose state block opener has a server-added data-id attribute, stores images under their basename, and fails when the state block still contains the placeholder title.
Evidence
hasTernaryAfterHole
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
tengu_ethereal_novaOn for this account, and not off by default
The flag server returned on for the one account this site reads, and nothing in this release compiles it off by default. The compiled default is shown below, and says which it is when we cannot read one: a fifth of gates compile in a string or a number rather than on or off, and most published releases have no gate table behind them at all. No client can see what the server returns for your account.
This account: on · anonymous baseline: on · compiled default in v2.1.238: on
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.
Added sinceA small documentation edit on Claude apps gateway for Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry touched a line naming /design after this was published.| [`/design-sync`](/docs/en/commands#all-commands) and `/design-login` | Not available | Both need claude.ai, which the CLI doesn't contact on gateway sessions, so neither command appears there |claude-apps-gatewaysee the edit
What has happened since
Flag reading movedThe flag server now returns off for tengu_ethereal_nova, read as this account.A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading movedThe flag server now returns on for tengu_ethereal_nova, read as this account.A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading movedThe flag server now returns nothing at all, having stopped carrying it for tengu_ethereal_nova, read as this account.A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
One source agreesOne thing we can check says the same as this entry.
Anthropic's documentation agreesA small documentation edit on Claude apps gateway for Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry touched a…
