Agent skill

Impeccable UI

Structure/a11y/responsive UI checks and command map. An agent skill from VKirill/claude-lane-stack.

Apache-2.0Auto-check passedFrontend & Design

Install Impeccable UI

skills CLI

$ npx skills add VKirill/claude-lane-stack --skill impeccable-ui -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install VKirill/claude-lane-stack impeccable-ui --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/VKirill/claude-lane-stack.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/lane-stack/skills/impeccable-ui .claude/skills/impeccable-ui && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "impeccable-ui" agent skill from https://github.com/VKirill/claude-lane-stack/tree/main/plugins/lane-stack/skills/impeccable-ui into .claude/skills/impeccable-ui/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "impeccable-ui", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/VKirill/claude-lane-stack/tree/main/plugins/lane-stack/skills/impeccable-ui

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add VKirill/claude-lane-stack --skill impeccable-ui -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install VKirill/claude-lane-stack impeccable-ui --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/VKirill/claude-lane-stack.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/lane-stack/skills/impeccable-ui .agents/skills/impeccable-ui && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "impeccable-ui" agent skill from https://github.com/VKirill/claude-lane-stack/tree/main/plugins/lane-stack/skills/impeccable-ui into .agents/skills/impeccable-ui/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "impeccable-ui", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add VKirill/claude-lane-stack --skill impeccable-ui -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install VKirill/claude-lane-stack impeccable-ui --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/VKirill/claude-lane-stack.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/lane-stack/skills/impeccable-ui .cursor/skills/impeccable-ui && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "impeccable-ui" agent skill from https://github.com/VKirill/claude-lane-stack/tree/main/plugins/lane-stack/skills/impeccable-ui into .cursor/skills/impeccable-ui/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "impeccable-ui", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/VKirill/claude-lane-stack.git --path plugins/lane-stack/skills/impeccable-ui

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add VKirill/claude-lane-stack --skill impeccable-ui -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install VKirill/claude-lane-stack impeccable-ui --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/VKirill/claude-lane-stack.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/lane-stack/skills/impeccable-ui .gemini/skills/impeccable-ui && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "impeccable-ui" agent skill from https://github.com/VKirill/claude-lane-stack/tree/main/plugins/lane-stack/skills/impeccable-ui into .gemini/skills/impeccable-ui/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "impeccable-ui", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install VKirill/claude-lane-stack impeccable-ui

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add VKirill/claude-lane-stack --skill impeccable-ui -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/VKirill/claude-lane-stack.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/lane-stack/skills/impeccable-ui .github/skills/impeccable-ui && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "impeccable-ui" agent skill from https://github.com/VKirill/claude-lane-stack/tree/main/plugins/lane-stack/skills/impeccable-ui into .github/skills/impeccable-ui/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "impeccable-ui", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add VKirill/claude-lane-stack --skill impeccable-ui -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install VKirill/claude-lane-stack impeccable-ui --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/VKirill/claude-lane-stack.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/lane-stack/skills/impeccable-ui .opencode/skills/impeccable-ui && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "impeccable-ui" agent skill from https://github.com/VKirill/claude-lane-stack/tree/main/plugins/lane-stack/skills/impeccable-ui into .opencode/skills/impeccable-ui/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "impeccable-ui", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: impeccable-ui
GitHub stars: 122
Token cost: ~963 tokens
SKILL.md length: 359 words
Files: 4 (incl. references)
Skills in repo: 49
Repo updated: Oct 9, 2026
First seen: Oct 7, 2026
Licence: Apache-2.0

At a glance

Structure/a11y/responsive UI checks and command map. An agent skill from VKirill/claude-lane-stack.

Works in 5 steps: Accessibility — contrast, labels,… → Performance — layout-property animation,… → Theming — hardcoded hex vs DESIGN.md… → …
Critique structure
SKILL.md covers Info (print and stop), Command map, Audit dimensions (evidence for… and Evidence before verdict, plus 1 more section
Calls npx

What it does

Impeccable UI is an agent skill from VKirill/claude-lane-stack. Structure/a11y/responsive UI checks and command map. Adapted from pbakaus/impeccable. Use when: impeccable, audit UI, a11y, адаптив, harden, layout, typeset, critique structure. SKIP: visual slop-only (design-taste); DESIGN.md extract (project-design); Vue without a run (writer); PRODUCT.md / hooks.

Its SKILL.md is about 960 tokens, which your agent loads only when the skill is triggered. The skill folder holds 4 other files, including reference files (for example `ATTRIBUTION.md`, `references/craft-floor.md` and `references/typeset.md`).

It sits in Frontend & Design, covering Accessibility and Design tokens. It works with Vue.js. The repository describes itself as: Multi-agent AI coding factory for one person — Claude Code PM + Codex/Qwen/Grok/Kimi/AGY writers, durable conveyor, auto-merge to main. The licence is Apache-2.0.

When your agent uses it

Critique structure
Tasks that involve Accessibility
Tasks that involve Design tokens

Example prompts

“/impeccable-ui”

Requirements

Node.js

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

Accessibility — contrast, labels, keyboard, headings, prefers-reduced-motion.
Performance — layout-property animation, lazy images, unused motion.
Theming — hardcoded hex vs DESIGN.md tokens.
Responsive — fixed widths, 44px targets, no horizontal dump on 375px.
States — hover/disabled/loading/empty/error actually exist.

What it can do on your machine

Read from SKILL.md and the folder at commit 45fa19e. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
- npx
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
- github.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Impeccable UI loads about 963 tokens when it runs, and up to ~1.7k if it reads all its reference files. Until then it costs about 79 tokens; SKILL.md has 359 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~79
When it runs · the whole SKILL.md, loaded when a task matches: ~963
With references · SKILL.md plus every file in references/, read only if the agent opens them: ~1.7k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from VKirill/claude-lane-stack at commit 45fa19e, republished under its Apache-2.0 licence (© VKirill). 359 words, ~963 tokens.

Download SKILL.mdSave it as .claude/skills/impeccable-ui/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.

name: impeccable-ui
description: Structure/a11y/responsive UI checks and command map. Adapted from pbakaus/impeccable. Use when: impeccable, audit UI, a11y, адаптив, harden, layout, typeset, critique structure. SKIP: visual slop-only (design-taste); DESIGN.md extract (project-design); Vue without a run (writer); PRODUCT.md / hooks.
argument-hint: [info]
license: Apache-2.0

Impeccable UI

Lane adapter of impeccable. Upstream is 23 slash commands + a binary + edit-hooks. We do not install that.

Visitor mode (pick from the surface, not the company):

Mode	Surfaces
Persuade	marketing, landing, pricing
Operate	cabinet, admin, settings, tools
Read	docs, help
Experience	portfolio, gallery

Info (print and stop)

If $ARGUMENTS is info / справка: print the block below verbatim, then stop.

text

impeccable-ui — структура и техника UI. Не хуки и не PRODUCT.md.

Оценка (design-lead, без кода)
- critique / typeset / layout / bolder / quieter / distill
- отчёт + Don'ts в DESIGN.md

Чинить (writer в ране)
- audit / harden / adapt / polish / animate / onboard
- craft-floor: references/craft-floor.md

Чужое
- clarify → copy-lead
- document / extract → project-design
- init / PRODUCT.md / hooks / live → нельзя

Роутер: /lane-stack:web-design info

Command map

Upstream	Lane
`critique` `typeset` `layout` `bolder` `quieter` `distill`	`design-lead` `MODE=audit`
`audit` `harden` `adapt` `polish` `animate` `onboard` `colorize` `optimize`	writer run, after «делай»
`clarify`	`copy-lead`
`document` `extract` `shape`	`project-design` / `page-prototype`
`init` `live` `hooks` `doctor` `craft`	refuse

Optional CLI: if impeccable is already on PATH, impeccable detect <path> is allowed as evidence. Do not download the binary, do not enable hooks.

Audit dimensions (evidence for observed; N/A for unverified)

Accessibility — contrast, labels, keyboard, headings, prefers-reduced-motion.
Performance — layout-property animation, lazy images, unused motion.
Theming — hardcoded hex vs DESIGN.md tokens.
Responsive — fixed widths, 44px targets, no horizontal dump on 375px.
States — hover/disabled/loading/empty/error actually exist.

Critique (design-lead) is one pass. Do not spawn dual sub-agents. If no screenshot: write DEGRADED: no screenshot and continue on source.

Show full SKILL.md (170 more words)Show less

Evidence before verdict

For each finding give the screen/path, observed behavior, user impact, smallest correction and verification step. Mark each dimension as observed, source-only, or not checked; an unobserved dimension is not a pass. Use existing browser evidence or ask the parent for browser-qa. A URL alone is not visual evidence. Keep subjective style preferences separate from defects.

For task-focused review, also inspect form labels/autocomplete, paste support, error recovery, focus return from overlays, long/localized content, semantic links versus buttons, image dimensions and navigation/back behavior. Apply only checks relevant to the surface; report unavailable evidence explicitly. Reference: Vercel Web Interface Guidelines.

For a11y/adaptation details and correct WCAG units, read the relevant section of web-design/references/specialist-checks.md. The 44px target above is our comfort recommendation, not a claim about WCAG AA's minimum. Match checks to actual input methods and report which interaction states were exercised.

NEVER

npx impeccable install, ~/.impeccable, project .impeccable/ hooks.
Write PRODUCT.md. Product truth is CLAUDE.md.
Replace DESIGN.md via upstream document. That is design-lead extract.
Fix Vue from the audit agent.

Files

SKILL.md and 3 other files (references) in plugins/lane-stack/skills/impeccable-ui of VKirill/claude-lane-stack.

SKILL.md
ATTRIBUTION.md
references/craft-floor.md
references/typeset.md

Open the folder on GitHubat commit 45fa19e

Compare with similar skills

Impeccable UI next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Impeccable UI compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Impeccable UI this skillVKirill/claude-lane-stack	122	—	~963	Automated safety check: Pass	Apache-2.0	today
Frontend Designjwynia/agent-skills	169	—	~3.2k	Automated safety check: Pass	MIT	7 mo ago
Frontend Designjjyaoao/HelloAgents	3.2k	1 repos	~7k	Automated safety check: Pass	MIT	2 days ago
Design Code for Any Frameworkplugin87/ux-ui-agent-skills	1.6k	—	~1.7k	Automated safety check: Pass	MIT	yesterday
Light Frontend DesignLight0305/Light-skills	640	—	~3.1k	Automated safety check: Pass	MIT	3 mo ago
UI/UX Design System AdvisorGalaxy-Dawn/claude-scholar	5.7k	1 repos	~1.1k	Automated safety check: Pass	MIT	16 days ago

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Questions about Impeccable UI

What does Impeccable UI do?

Structure/a11y/responsive UI checks and command map. An agent skill from VKirill/claude-lane-stack. Impeccable UI is an agent skill from VKirill/claude-lane-stack. Structure/a11y/responsive UI checks and command map.

When should I use Impeccable UI?

Impeccable UI fits situations like: critique structure; tasks that involve Accessibility; tasks that involve Design tokens.

How do I install Impeccable UI in Claude Code?

Run `npx skills add VKirill/claude-lane-stack --skill impeccable-ui -a claude-code`. Or copy the skill folder (plugins/lane-stack/skills/impeccable-ui in VKirill/claude-lane-stack) into .claude/skills/impeccable-ui in your project. Claude Code loads it when a task matches its description.

How do I install Impeccable UI in Codex?

Run `npx skills add VKirill/claude-lane-stack --skill impeccable-ui -a codex`. Or copy the skill folder (plugins/lane-stack/skills/impeccable-ui in VKirill/claude-lane-stack) into .agents/skills/impeccable-ui in your project. Codex loads it when a task matches its description.

Can I use Impeccable UI in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add VKirill/claude-lane-stack --skill impeccable-ui -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/impeccable-ui, .gemini/skills/impeccable-ui, .github/skills/impeccable-ui and .opencode/skills/impeccable-ui in your project.

What does Impeccable UI need to run?

Going by SKILL.md and its folder, Impeccable UI needs the command-line tools its instructions call (npx). Our summary lists: Node.js.

Does Impeccable UI access the network?

SKILL.md names 1 domain. As links in the text: github.com. This is read from the text; nothing was executed.

Is Impeccable UI safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Impeccable UI use?

Impeccable UI is published under the Apache-2.0 licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Impeccable UI use?

About 963 tokens (SKILL.md is roughly 3.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 774 tokens, read only when the agent opens those files.

What are the alternatives to Impeccable UI?

Skills that share tags, products or a category with Impeccable UI: Frontend Design (jwynia/agent-skills, 169 stars), Frontend Design (jjyaoao/HelloAgents, 3.2k stars), Design Code for Any Framework (plugin87/ux-ui-agent-skills, 1.6k stars) and Light Frontend Design (Light0305/Light-skills, 640 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Impeccable UI?

VKirill (a GitHub user) maintains it in VKirill/claude-lane-stack, which has 122 GitHub stars. The repository holds 49 skills in this directory. The repository was last updated on October 9, 2026.

Source: VKirill/claude-lane-stack on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Impeccable UI

Install Impeccable UI

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Impeccable UI

Info (print and stop)

Command map

Audit dimensions (evidence for observed; N/A for unverified)

Evidence before verdict

NEVER

Files

Compare with similar skills

Similar skills

Frontend Design

Frontend Design

Design Code for Any Framework

Light Frontend Design

UI/UX Design System Advisor

Extract Design

More from VKirill/claude-lane-stack

UI UX Pro Max

App Architect

Browser QA

Copy Project Life

Copy Research

Docs Maintain

Questions about Impeccable UI

Install Impeccable UI

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Impeccable UI

Info (print and stop)

Command map

Audit dimensions (evidence for observed; N/A for unverified)

Evidence before verdict

NEVER

Files

Compare with similar skills

Similar skills

More from VKirill/claude-lane-stack

Related

Questions about Impeccable UI