claude-design-system-prompt
Reverse-engineered opinionated design system prompt + skill library
Install
No single install command in the README.
No install command in README: paste system-prompt.md as the system prompt and copy skills/ manually.
Taken from the project README. Check the source for the latest instructions.
Before / after
Same standard brief both times: a landing page for Tally, a fictional budgeting app, screenshotted at 1440px. Before = no skill. After = generated by us applying the skill's published instructions to that brief. We did not run the skill inside its own agent or tooling, so results may differ from a native install. How we test

