I can't even tell if this repository is based on prompts extracted from Claude Design or if the author had an LLM create all of these prompts in it from scratch.
The fact that they encourage and accept PRs indicates that this isn't intended as a direct prompt extraction exposure project - plus the license, which should indicate they have the authorship necessary to license that content.
Assuming this IS a complete ground-up implementation it really needs to link to demonstrations that it works. Without any evidence it's hard to justify spending time exploring it.
Agree, it’s vibe slopped rather than the actual Claude design system prompt
Claude design's prompt is trivial to verify. They bundle it in the frontend bundle and send it on every network request.
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If you ask Claude Design itself to list the names of the skills available to it you get:
Which does not match the structure of this project at all.