Impeccable 2 (my take on the most effective way to make your AI harness better at design) dropped last week. But I was so busy working on the next iteration that I buried the lede a bit.
So here's a detailed post on what's new and improved:
1. CLI: npx impeccable detect. Scans your code *without need for an LLM* for 25 anti-patterns across typography, color, layout, motion, and quality. Works on HTML, CSS, JSX/TSX, Vue, Svelte, and CSS-in-JS. Framework detection, multi-file import tracking, Puppeteer-backed live URL scanning, CI-ready JSON output,--fast regex mode for huge codebases. Yes, you can built automatic PR anti-slop detection with this in a few lines of code!
2. Chrome extension. One-click detection on any page (yours, staging, production, or someone else's). DevTools panel. Live computed styles, interactive panel, on-page highlights.
3. Dramatically upgraded /critique. LLM + real time detection sub-agents run in parallel, score against Nielsen's heuristics, auto-run the detector, and open a live browser overlay so you can walk each finding in place.
4. Data-driven design performance improvements, driven by an internal eval framework that runs the same brief through frontier models with and without the skill loaded, then measures how much the output collapses into monoculture. The biggest unlock: an anti-attractor procedure that forces the model to enumerate and reject its reflex defaults before picking. Validated on gpt-5.4 and Qwen 3.6 Plus across 15 niches. Result: much more font and color diversity, sharper quality, stronger Codex support.
5. Design before code. /shape runs a structured discovery interview and produces a design brief before any code is written. /impeccable craft chains that brief into the full implementation flow. You ship a designed feature instead of a reflex card grid.
6. One name, one namespace, and 18 commands (down from 21). The skill used to be called frontend-design, it's now called impeccable. /teach-impeccable became /impeccable teach, /extract became /impeccable extract. /arrange became /layout. /normalize merged into /polish. /onboard merged into /harden. Auto-cleanup handles leftover files on first load after updating.
7. A real docs site. 18 per-skill pages with before/after demos, canonical SKILL.md inline, two tutorials, 38 rule cards with inline visual examples.
Give it a try:
@pbakaus
