New DesignSync tool syncs local files with claude.ai/design projects, unlocked via /design-login
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.
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.