Source Intelligence

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.248

Claude Design explains a rejected credential

Use it now
Useful3 Signal2
Claude Design not in their notes

If your credential lacks Claude Design access, you're told to run /design login.

/design login
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.

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.248 →