Use when auditing UI code for interface-guideline compliance (accessibility, forms, animation, images, performance, UX copy) and/or validating a deployed page against Lighthouse 95+ targets. Produces evidence-based findings (file:line + Lighthouse JSON) and turns confirmed pendencies into Draft SPECs via write-specs. Do NOT use to design/build UI from scratch (use design) or to fix findings inline — fixes go through the SPEC pipeline.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Web Design Guidelines
Merged validation skill: static **interface-guidelines review** of UI code (accessibility, focus, forms, animation, typography, images, performance, state, touch, theming, i18n, hydration, copy) + runtime **Lighthouse verification** (95+ in all categories, mobile and desktop) → consolidated findings report → Draft SPECs via `write-specs` → Epic + Issues via `create-issues` → execution via `orchestrator`.
Adapted from:
- `vercel-labs/web-design-guidelines` (rules vendored in `references/interface-guidelines.md` — do not re-fetch at runtime)
- `aliborhothamud/lighthouse-95-skill` (measurement loop in `references/lighthouse-verification.md`)
This skill **audits and plans** — it never edits application code. Confirmed pendencies become SPECs and Issues; implementation happens in the normal SPEC/PR pipeline.
## Terminology
| Term | Definition |
| --- | --- |
| `finding` | One concrete violation, cited as `file:line` (static) or audit ID + evidence (Lighthouse) |
| `pendency` | A finding the user confirmed should be fixed |
| `finding group` | A set of related pendencies that share one fix strategy — the unit of a Draft SPEC |
…
The line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (9007 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag
Source
GitHub
afonsoft/skills · 14 stars · license MIT · pushed 2026-10-27 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_6pr6kl64b2fvjcjv
GET https://markdownregistry.com/api/v1/resolve?ref=afonsoft/skills/web-design-guidelines
GET https://markdownregistry.com/api/v1/blob/0c3d54cb571483b5998c82ac8f33d09bd10505126331bec499ed12da19be0792
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
afonsoft/skills · skills/architecture/SKILL.md · Single owner of everything under docs/architecture/ — ADRs, architecture and design documents, and architecture…
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bytedance/deer-flow · skills/public/web-design-guidelines/SKILL.md · Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit…
vercel-labs/agent-skills · skills/web-design-guidelines/SKILL.md · Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit…
awesome-dsh-plugin/awesome-dsh-plugin · .agents/skills/web-design-guidelines/SKILL.md · Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit…
tech-leads-club/agent-skills · packages/skills-catalog/skills/(design)/web-design-guidelines/SKILL.md · Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit…
gronxb/hot-updater · .agents/skills/web-design-guidelines/SKILL.md · Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit…
fcakyon/claude-codex-settings · plugins/react-skills/skills/web-design-guidelines/SKILL.md · Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit…
coco-research/coco · skills/web-design-guidelines/SKILL.md · Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit…
evovexai/evoflow · skills/public/web-design-guidelines/SKILL.md · Review UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit…
