From null-to-hero
Use when the user wants to design, build, plan, critique, audit, polish, clarify, simplify, amplify, animate, typeset, layout, adapt, harden, or otherwise improve a frontend interface. Covers websites, landing pages, dashboards, product UI, app shells, components, forms, settings, onboarding, and empty states. Also handles UX review, Gestalt principles, UX research methodology, personas, journey mapping, information architecture, card sorting, tree testing, cognitive load, WCAG 2.2 accessibility, image strategy (AVIF/WebP/srcset), form patterns, performance, responsive design, mobile ergonomics (thumb-zone, touch targets), theming, anti-patterns, typography, fonts, spacing, color, motion, micro-interactions, parallax, scrollytelling, scroll-driven animations, View Transitions API, container queries, modern CSS (:has(), color-mix()), UX copy, error states, edge cases, i18n, and design systems. For bland designs that need to be bolder, loud designs that should be quieter, or ambitious visual effects. Not for backend-only tasks.
How this skill is triggered — by the user, by Claude, or both
Slash command
/null-to-hero:siteasy [express|build|improve|fix|ship|overhaul · shape|concept|research|ia · audit|critique · animate|amplify|simplify|delight|layout|charts|overdrive|parallax|typeset|video · adapt|mobile|clarify · harden|onboard|polish · setup|document|extract|tokens · live] [target][express|build|improve|fix|ship|overhaul · shape|concept|research|ia · audit|critique · animate|amplify|simplify|delight|layout|charts|overdrive|parallax|typeset|video · adapt|mobile|clarify · harden|onboard|polish · setup|document|extract|tokens · live] [target]This skill is limited to the following tools:
The summary Claude sees in its skill listing — used to decide when to auto-load this skill
Designs and iterates production-grade frontend interfaces. Real working code, committed design choices, exceptional craft. Accessible to beginners, powerful enough for experts.
references/accessibility-engineering.mdreferences/adapt.mdreferences/animate.mdreferences/animation-engineering.mdreferences/assets-library.mdreferences/audit.mdreferences/bolder.mdreferences/brand-identity.mdreferences/brand.mdreferences/clarify.mdreferences/cognitive-load.mdreferences/color-and-contrast.mdreferences/color-systems.mdreferences/colorize.mdreferences/component-patterns.mdreferences/component-recipes.mdreferences/concept.mdreferences/craft.mdreferences/creative-patterns.mdreferences/critique.mdDesigns and iterates production-grade frontend interfaces. Real working code, committed design choices, exceptional craft. Accessible to beginners, powerful enough for experts.
Good taste is trained, not innate — the ability to see beyond the obvious and recognize what elevates. Unseen details compound: when a feature works exactly as assumed, users proceed without a second thought. That is the goal.
Several commands (
audit,craft, quality passes) call theimpeccableCLI vianpx. Tested with impeccable 2.3.2; pin withnpx [email protected]to avoid upstream drift.
Before any design work or file edits, pass these gates. Skipping them produces generic output that ignores the project.
| Gate | Required check | If fail |
|---|---|---|
| Context | PRODUCT.md and DESIGN.md are read from the workspace. | Use Read to look for PRODUCT.md; if missing, run /siteasy setup first. |
| Direction | If DIRECTION.md exists at the project root, it is read and honored (central idea, register, signature moment). | Commands that change the visual language re-read it. If the task contradicts the committed direction, surface the conflict; never silently override it. |
| Product | PRODUCT.md exists and is not empty or placeholder ([TODO] markers, <200 chars). | Run /siteasy setup, then resume. Never synthesize PRODUCT.md from the user's prompt alone. |
| Command | The matching command reference is loaded when a sub-command is used. | Load the reference before continuing. |
| Craft | /siteasy build has a user-confirmed shape brief for this task. setup / PRODUCT.md never counts as shape. | Run /siteasy shape and wait for explicit brief confirmation. |
| Mutation | All active gates above pass. | Do not edit files yet. |
Three files in the workspace or project root form the shared project state every command reads first and decision-making commands write back to:
setup.document and extract.## <date> /<skill> <command> + Decisions / Artifacts / Open bullets) and reads the log first to avoid re-deciding or contradicting past entries. Journeys use it as their checkpoint state; audits append their score and report path./siteasy concept runs; the committed art direction (central idea, anti-reference, signature moment). Written by concept, refined by tokens and brand decisions, read by every build and motion command, judged by critique and by the audit's memorability agent.Use the Read tool to check for these files. If already read in this session, don't re-read.
If PRODUCT.md is missing, empty, or placeholder: run /siteasy setup, then resume. If the original task was /siteasy build, resume into /siteasy shape before any implementation.
If DIRECTION.md is missing on a brand-register project: nudge once ("Run /siteasy concept so every command pulls in the same direction"), then proceed.
If DESIGN.md is missing: nudge once per session ("Run /siteasy document for more on-brand output"), then proceed.
Every design task is brand (marketing, landing, campaign, portfolio — design IS the product) or product (app UI, admin, dashboard, tool — design SERVES the product).
Identify before designing. Priority: (1) cue in the task itself; (2) the surface in focus; (3) register field in PRODUCT.md. First match wins.
Load the matching reference: references/brand.md or references/product.md. The shared design laws below apply to both.
Apply to every design, both registers. Match implementation complexity to the aesthetic vision. Interpret creatively. Vary across projects — never converge on the same choices.
#000 or #fff. Tint every neutral toward the brand hue (chroma 0.005–0.01).Dark vs. light is never a default. Write one sentence of physical scene: who uses this, where, under what ambient light, in what mood. If the sentence doesn't force the answer, add detail until it does.
The numeric thresholds behind these laws live once, with stable identifiers, in tools/data/laws.csv — cite the identifier instead of restating the number: L-MOTION-1 (feedback 150-300ms), L-MOTION-2 (2 decorative loops per view), L-MOTION-3 (linear scrub), L-TOUCH-1 (44px targets), L-TOUCH-2 (8px spacing), L-MEDIA-1 (video 10/30MB), L-MEDIA-2 (models 5MB), L-MEDIA-3 (frame sequences 50/150), L-TYPE-1 (16px body), L-TYPE-2 (65-75ch), L-CONTRAST-1 (4.5:1), L-PERF-1 (LCP 2.5s), L-PERF-2 (CLS 0.1), L-PERF-3 (INP 200ms), L-WEBGL-1 (1000 draw calls), L-WEBGL-2 (DPR cap 2). The validator fails if a law stops being cited anywhere (check 37): when a threshold changes, change it in laws.csv and follow the citations.
Match-and-refuse. If you're about to write any of these, rewrite with different structure.
border-left or border-right > 1px as a colored accent on cards, list items, callouts.background-clip: text on anything other than display-only hero type.transition: all. Always specify exact properties.ease-in on UI animations. Use ease-out or a custom curve.47.2%), and picsum.photos/seed/{word}/width/height.Six doors cover most requests. Nothing yet: express [brief]. Add to what
exists: build [feature]. "Make it better" without a named axis:
improve [target]. An audit produced findings: fix [target]. Finish and
publish, gates included: ship. Rework a whole site: overhaul [url]. For a
whole-site check use /audit [url]; to be found on Google and in AI answers,
/seo [url]. Everything else below is a specialist pass.
| Command | Category | Description | Reference |
|---|---|---|---|
build [feature] | Build | Shape, then build a feature end-to-end | references/craft.md + references/css-architecture.md + references/component-patterns.md + references/assets-library.md + references/stock-media.md + references/resource-recommendations.md + references/resource-recipes.md + references/fetch-asset.md + references/sourcing-external-code.md |
shape [feature] | Build | Shape the UX/UI before writing code | references/shape.md + references/landing-patterns.md |
setup | Build | Create PRODUCT.md and DESIGN.md context | references/teach.md |
concept [project] | Build | Set the creative direction before building: idea, anti-reference, signature moment | references/concept.md + references/memorability.md |
research [scope] | Build | UX research planning, methods selection, persona and journey synthesis; generates empathy maps, journey maps and service blueprints | references/ux-research.md + references/personas.md + references/journey-mapping.md |
ia [target] | Build | Information architecture, card sorting, tree testing, navigation patterns | references/information-architecture.md |
document | Build | Generate DESIGN.md from existing project code | references/document.md |
extract [target] | Build | Pull reusable tokens and components into a design system; the handoff deliverable emits the developer spec (layout, tokens, props, states, breakpoints, motion, accessibility) | references/extract.md + references/handoff.md |
tokens [project] | Build | Audit or create a two-layer CSS token system — primitives + semantic layer + dark mode | references/tokens.md + references/color-systems.md + references/elevation.md |
critique [target] | Evaluate | UX design review with heuristic scoring | references/critique.md + references/memorability.md |
audit [target] | Evaluate | Technical quality checks (a11y, perf, responsive, WCAG 2.2, image strategy, forms) | references/audit.md + references/accessibility-engineering.md + references/wcag-2-2.md + references/image-strategy.md + references/form-patterns.md |
improve [target] | Refine | One door for "make it better": symptom-to-axis dispatch to the right refine or enhance pass | references/improve.md |
fix [target] | Refine | Execute audit findings by remediation route: triage, per-command batches, verify | references/fix.md |
polish [target] | Refine | Final quality pass before shipping | references/polish.md |
amplify [target] | Refine | Amplify safe or bland designs — bolder typography, stronger color, more presence | references/bolder.md + references/colorize.md + references/style-systems.md + references/brand-identity.md |
simplify [target] | Refine | Reduce visual noise, tone down, strip to essence | references/quieter.md + references/distill.md |
clarify [target] | Refine | UX copy, error messages, button labels, empty states | references/clarify.md |
harden [target] | Refine | Production hardening + performance — errors, i18n, edge cases, Core Web Vitals | references/harden.md + references/optimize.md + references/ship-checklist.md |
onboard [target] | Refine | First-run flows, empty states, feature discovery, activation | references/onboard.md |
animate [target] | Enhance | Add purposeful animations and motion | references/animate.md + references/animation-engineering.md + references/motion-choreography.md + references/motion-design.md |
typeset [target] | Enhance | Typography audit, font selection, hierarchy | references/typeset.md + references/typography.md |
layout [target] | Enhance | Spacing systems, visual rhythm, grid tools | references/layout.md |
charts [target] | Enhance | Accessible data visualization: chart-type choice, a11y grades, non-color fallbacks | references/data-viz.md |
adapt [target] | Enhance | Mobile/tablet/desktop/print adaptation | references/adapt.md + references/responsive-design.md |
mobile [target] | Enhance | Phone-specific ergonomics — thumb zone, touch targets, mobile navigation, virtual keyboards, mobile audit | references/mobile-ergonomics.md |
delight [target] | Enhance | Micro-interactions, personality in copy, satisfying feedback | references/delight.md + references/creative-patterns.md |
overdrive [target] | Advanced | View Transitions API, WebGL, scroll-driven animations | references/overdrive.md + references/creative-patterns.md + references/inspiration.md + references/signature-moments.md |
video [target] | Advanced | Guaranteed-play decorative video: classify, transcode to a canvas-decodable asset (WASM decoder), emit the drop-in component | references/video.md |
parallax [target] | Advanced | Multi-layer depth, scrollytelling, AI-adaptive motion governance, WCAG 2.2.2 compliance | references/parallax.md |
live [target] | Advanced | Interactive variant mode (requires running dev server) | references/live.md |
ship [scope] | Journeys | Finish-and-ship pipeline: polish, defect scan, deterministic audit, hardening, final audit | references/journey-ship.md |
overhaul [url] | Journeys | Audit-driven rework: baseline, fix by remediation route, before/after compare, ship | references/journey-overhaul.md |
express [brief] | Journeys | Zero-to-landing: setup, concept, tokens, shape, build, motion, checks, harden | references/journey-express.md |
When the user invokes a command:
If no command is specified, treat the request as build for new work, or critique for existing work.
Legacy names and synonyms registered in tools/data/intents.csv are accepted
and route to their canonical command (for example the retired launch name
runs harden).
npx claudepluginhub mariusyvard/nulltohero --plugin null-to-heroGuides collaborative design exploration before implementation: explores context, asks clarifying questions, proposes approaches, and writes a design doc for user approval.
Creates structured, bite-sized implementation plans from specs or requirements before writing code. Useful for breaking down multi-step tasks into testable steps with file structure and task boundaries.
Synthesizes the current conversation into a structured spec (PRD) and publishes it to the project issue tracker with a ready-for-agent label, without interviewing the user.