What probably matters to youSection of the release
What
A new tool called DesignSync lets Claude Code read and write "design-system" projects hosted at claude.ai/design. It supports listing and fetching projects and files, creating projects, writing and deleting files, and registering or unregistering assets. It's driven by a new /design-sync skill, and access is authorized through a new /design-login command that connects your claude.ai account.
Before any files can be written or deleted, DesignSync requires a "finalize_plan" step that locks in the exact file paths that will be changed.
Why
This lets you keep local components in sync with a shared design system managed on claude.ai, while the finalize-plan requirement guards against accidental or open-ended writes to your design files.
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.
Confirmed sinceAnthropic's documentation has since written up /design-login, on Claude apps gateway for Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry.| [`/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
Confirmed sinceAnthropic's documentation has since written up /design-sync, on Claude apps gateway for Amazon Bedrock, Claude Platform on AWS, Google Cloud, and Microsoft Foundry.| [`/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
How sure we are
One source agreesOne thing we can check says the same as this entry.
Anthropic's documentation agreesAnthropic's documentation has since written up /design-sync, on Claude apps gateway for Amazon Bedrock, Claude Platform on AWS, Google…
