You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
DesignArea: what it touches
ImprovementsKind: in v2.1.247,
ImprovementsSection of the release
What
When the Design API rejects a request with HTTP 403 and the body error: "needs_design_scopes", Claude Code now reports that the stored credential lacks Design permissions and tells you to run /design login, rather than showing a generic authentication failure.
Details
Raised as a distinct error carrying the code design_tool_needs_design_scopes.
Non-interactive sessions get a longer message explaining that a CI runner has to reuse a login stored earlier.
The MCP side of Design got a matching 403 message pointing at /design-login.
Applies to every 403 with that body; no flag involved.
Evidence
design_tool_needs_design_scopes
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
