🎨impeccable
pbakaus/impeccable · homepage ↗
The design language that makes your AI harness better at design.
⭐ Hugely popular: 59k stars, gaining about 2k a week
View on GitHub ↗repo profile
momentum
durability
bus factor = how many people it takes to cover more than half the commits (6 months). 1 is a solo project; higher means the work is spread across a team. top-author share is the single busiest author's slice of those commits.
since we covered it
why it's a big deal
- Targets a known weakness in AI coding agents, generic frontend output like overused Inter fonts, purple-to-blue gradients, and deep card nesting, giving those tools a shared design vocabulary to work against.
- Helps developers using AI harnesses ship less template-looking UI, with 23 /impeccable commands such as audit, polish, critique, and animate to direct the agent.
- The 45 detector rules and CLI run with no LLM and no API key, so teams can gate design anti-patterns in CI using the JSON output mode.
under the hood
- Written mostly in JavaScript, it ships 45 deterministic detector rules that catch design anti-patterns without a model, alongside LLM-only critique checks for judgment calls.
- A CLI scans directories, single HTML files, or live URLs via npx impeccable detect, with a --json flag for CI pipelines.
- Setup runs /impeccable init to write PRODUCT.md and optionally DESIGN.md, and integrates through provider-native hook manifests for tools including Cursor, Claude Code, Copilot, Gemini CLI, and Codex CLI.
Radar summary, generated from the project's public sources
star history
- PR#30 11k 2026-03-25
- now 59k + 49k since first covered
curve is sampled from GitHub's star history, plus our own daily readings since we covered it; the dashed stretch is before we first covered it, the solid line since. figures at coverage are the numbers we printed then (approx.), current count is live.
understory
Output and attention are roughly in balance.
- output, commits & releases
- clout, star velocity
output = commits & releases; clout = star velocity, both 0 to 100 monthly indices; the gap where output runs above clout is the understory. The understory →
covered in
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Design steering system for AI-generated frontend work
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