What probably matters to youSection of the release
What
If claude.ai credentials do not carry Claude Design access, the tool now says so directly and tells you to run /design login, with separate wording for non-interactive sessions such as CI or hosted runs where that command cannot be used.
Details
Accompanied by new error types for missing consent and missing project access, and a validation table for Design tool arguments including list_projects, write_files and register_assets
Reachable only in sessions where the Design tool is present; nothing in this build shows what turns it on
Evidence
Claude Design rejected this session's claude.ai credential (HTTP 403): it does not carry Claude Design access. Run /design login to authorize Claude Design, then retry.
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
Read from
Names in the bundle/design login
How sure we are
One source agreesOne thing we can check says the same as this entry.
Anthropic's release notes agreeFixed /mcp listing a project .mcp.json entry that declares the claude.ai connector type under the trusted "claude.ai" heading; it now…
