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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 v2.1.221

Design tool: clearer refusal when a project write grant is missing in non-interactive sessions

You'll notice
Useful2 Signal0
Artifacts not in their notes

Design tool now explains exactly how to get write access when running without an interactive session.

finalize_planplan_token
What

Calling write_files or create_support_js without an active project write grant in a non-interactive session now returns a specific error explaining the route forward.

Details
  • The message directs the caller to use finalize_plan with writes and to pass the plan_token.
  • It states that a durable grant must be approved from an interactive session.
  • Carries error code design_tool_needs_project_grant_non_interactive.
Evidence

design_tool_needs_project_grant_non_interactive

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.221 →