Agent skill · design visual · juliusbrussee
interface-kit
Authoritative guide for implementing stunning, accessible, performant UI. Synthesizes design engineering philosophy, accessibility standards, animation principles, spatial design, typography, color systems, and component craft into a single actionable reference. Complements the design-system skill (which covers DESIGN.md spec writing) by covering the HOW of implementation. Trigger phrases: "build UI", "create component", "landing page", "make it look good", "frontend", "design", "polish UI", "implement design", "make it beautiful", "UI implementation", "component styling", "animation", "accessibility
Why this skill is useful
Provides actionable guidance on UI implementation that includes accessibility standards, performance metrics, and design principles not commonly known to AI.
What it needs
About 11k tokens when loaded. Last updated 2026-07-08. 144 stars on the source repository.
What this skill does
Interface Kit: Implementation Guide for Exceptional Interfaces If a DESIGN.md exists at the project root, its tokens and specifications override all defaults in this skill. This skill provides sensible defaults for when no design system exists, and implementation guidance that applies regardless. For deep dives on any section, see the reference files in this skill's references/ directory. --- 1. Core Philosophy Taste is trained, not innate. Study why great interfaces feel right. Deconstruct apps you admire — the spacing, the timing, the weight of a shadow. The gap between "fine" and "exceptional" is built from hundreds of micro-decisions that users feel but never consciously notice. Unseen details compound. A single rounded corner, a single eased transition, a single well-chosen shadow — none of these matter alone. Together they become "a thousand barely audible voices singing in tune." The cumulative effect is what separates craft from output. Beauty is leverage. Polish is not vanity. Good defaults, considered typography, and intentional motion are real differentiators. Users trust interfaces that feel cared for. Investors notice. Competitors can't easily replicate taste. Intentionality over intensity. Both bold maximalism and refined minimalism work — what fails is the absence of a clear point of view. Every visual decision should trace back to a deliberate conceptual direction. If you can't articulate WHY a choice was made, reconsider it. Choose a direction and execute with precision. Don't hedge between styles. A brutalist page committed fully will always outperform a page that's "a little bit of everything." Commit, then refine. NEVER produce generic "AI slop" aesthetics. No gratuitous gradients on white backgrounds. No cookie-cutter hero sections with stock illustrations. No safe, forgettable layouts that could belong to any product. Every interface should have a point of view that makes it recognizable. --- 2. …
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills juliusbrussee/interface-kit