Design
For frontend code design, Pace defers to impeccable.
Design is its own discipline with its own dedicated tool, and frontend code design in particular has so much depth that it deserves a whole skill kit rather than a single Pace plugin. So Pace points designers and frontend engineers at impeccable: a separate Apache 2.0 router (/impeccable) with 23 sub-commands across typography, color, layout, motion, accessibility, UX writing, design systems, and dev handoff. Impeccable also ships a detector that catches AI-generated design slop (low-contrast text, icon-tile stacks, gradient-on-gradient, dead-center heroes, flat type hierarchy) via CLI, browser overlay, and Chrome extension. Pace's own /design plugin handles the policy layer: UX research synthesis, design-system management, accessibility as a workflow, dev-handoff briefs. Most teams install both.
Impeccable is the frontend-craft counterpart to Pace. 23 sub-commands focused entirely on the design work that ships in actual UI code — typography, color, layout, motion, a11y — plus ~50 anti-pattern detection rules and a multi-harness install (Claude Code, Cursor, Gemini, Codex, and more).
Pace still includes Anthropic's design plugin in the catalog if you want UX research, accessibility audits, or dev handoff skills alongside impeccable.