Ever asked Claude Code to build you a UI and got back the same Inter font, purple gradient, rounded-corner card layout that every other AI-generated site has? Yeah. That's not a Claude problem, that's a training data problem. The model defaults to what it's seen most, and what it's seen most is generic SaaS templates.

Impeccable fixes this by installing actual design taste into your AI tool. It's a skill with 20 slash commands covering typography, colour, layout, and motion. Things like /polish, /audit, /redesign. It also ships curated anti-pattern guidance so the model knows what not to do, which honestly matters more than telling it what to do.

One command to install:

npx skills add pbakaus/impeccable

It auto-detects your setup. Works with Claude Code, Cursor, Gemini CLI, Codex CLI, Copilot, the lot. It trended on GitHub straight away, which tells you how many people were quietly miffed about AI-generated UIs coming off the same assembly line.

I've been using it for a few weeks and the difference is noticeable. Not magic, the model still needs direction, but it stops reaching for the same tired patterns by default. Less "startup template from 2023" and more "someone actually thought about this." If you're shipping any kind of frontend with AI assistance, this is worth the thirty seconds it takes to install.