Agent skill

Impeccable

by Peiiii in Peiiii/nextclaw

A skill your agent uses when the user wants distinctive, production-grade frontend design, anti-generic AI aesthetics, UX critique, technical UI audits, or final polish through bundled Impeccable…

MITAuto-check passedFrontend & Design

Install Impeccable

skills CLI
$ npx skills add Peiiii/nextclaw --skill impeccable -a claude-code

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

GitHub CLI
$ gh skill install Peiiii/nextclaw impeccable --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/Peiiii/nextclaw.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/impeccable .claude/skills/impeccable && 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/

Facts

Skill name
impeccable
GitHub stars
260
Token cost
~2.5k tokens
SKILL.md length
1,092 words
Files
21 (incl. references)
Skills in repo
70
Repo updated
First seen
Licence
MIT

At a glance

A skill your agent uses when the user wants distinctive, production-grade frontend design, anti-generic AI aesthetics, UX critique, technical UI audits, or final polish through bundled Impeccable…

  • Works in 5 steps: Verify the bundled assets exist → Classify the user's need → Gate on design context before real… → …
  • The user wants distinctive
  • SKILL.md covers Overview, What This Skill Covers, What This Skill Does Not Cover and Install Boundary, plus 6 more sections
  • Calls npm, node and npx; reaches github.com

What it does

Impeccable is an agent skill from Peiiii/nextclaw. Use when the user wants distinctive, production-grade frontend design, anti-generic AI aesthetics, UX critique, technical UI audits, or final polish through bundled Impeccable references and an optional upstream detector CLI.

Its SKILL.md is about 2.5k tokens, which your agent loads only when the skill is triggered. The skill folder holds 22 other files, including reference files (for example `UPSTREAM_NOTICE.md`, `marketplace.json` and `references/SOURCES.md`).

It sits in Frontend & Design. The repository describes itself as: A human-centered long-term AI partner—not a task-centered assistant. The licence is MIT.

When your agent uses it

  • The user wants distinctive
  • Production-grade frontend design
  • Anti-generic AI aesthetics
  • Technical UI audits

Example prompts

  • “/impeccable”

Requirements

  • Node.js

Workflow steps

5 steps, taken from the step headings in SKILL.md.

  1. Verify the bundled assets exist
  2. Classify the user's need
  3. Gate on design context before real design work
  4. Load only the matching local workflow
  5. Treat the detector CLI as optional runtime, not a default assumption

What it can do on your machine

Read from SKILL.md and the folder at commit 973722e. 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:

    • npm
    • node
    • npx

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • 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 loads about 2.5k tokens when it runs, and up to ~18k if it reads all its reference files. Until then it costs about 59 tokens; SKILL.md has 1,092 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~59
When it runs · the whole SKILL.md, loaded when a task matches
~2.5k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~18k

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 Peiiii/nextclaw at commit 973722e, republished under its MIT licence (© Peiiii). 1,092 words, ~2,532 tokens.

Download SKILL.mdSave it as .claude/skills/impeccable/SKILL.md (or your agent's skills folder). This skill also uses 20 other files; get the full folder from GitHub.
name
impeccable
description
Use when the user wants distinctive, production-grade frontend design, anti-generic AI aesthetics, UX critique, technical UI audits, or final polish through bundled Impeccable references and an optional upstream detector CLI.

Impeccable

Overview

Use this skill when the user wants stronger frontend design quality inside NextClaw.

This marketplace skill adapts the upstream pbakaus/impeccable project into a single installable NextClaw skill package with:

  • one top-level workflow router,
  • bundled local references for typography, color and contrast, layout, motion, interaction, responsive design, and UX writing,
  • bundled workflow guides for shaping, crafting, critique, audit, polish, and design-system extraction,
  • and an optional upstream impeccable detector CLI for deterministic anti-pattern scans.

Be explicit about the boundary:

  • This skill owns design-context gating, workflow selection, expectation-setting, and detector readiness guidance.
  • The bundled local references own the detailed design vocabulary.
  • The optional upstream impeccable CLI owns deterministic anti-pattern detection.
  • NextClaw, the current repository rules, and the active runtime own actual implementation and execution.

Do not present third-party detector output as built-in NextClaw capability. Do not pretend the detector is ready when it is not.

What This Skill Covers

  • design context setup before UI work,
  • feature shaping before code is written,
  • distinctive frontend implementation guidance that avoids generic AI aesthetics,
  • focused passes on typography, color, layout, motion, interaction, responsive behavior, and microcopy,
  • design critique and technical UI audit,
  • final polish before shipping,
  • design-system extraction from repeated patterns,
  • optional detector-assisted anti-pattern scans when the upstream CLI is available.

What This Skill Does Not Cover

  • inferring the real audience or brand tone purely from code,
  • silently installing npm packages or downloading the detector runtime,
  • claiming detector-based evidence when Node/npm or the CLI are unavailable,
  • overriding a stricter local design system or project rulebook,
  • turning every design request into the same maximalist or marketing-style aesthetic,
  • pretending that an upstream multi-command ecosystem maps one-to-one onto NextClaw command surfaces.

Install Boundary

Always distinguish these paths:

  • NextClaw marketplace install: nextclaw skills install impeccable
  • Installed NextClaw skill assets: <workspace>/skills/impeccable/
  • Optional upstream detector runtime: npm install -g impeccable
  • Upstream standalone bundles for other tools: https://github.com/pbakaus/impeccable

Installing the marketplace skill does not install the upstream detector automatically.

Deterministic First-Use Workflow

When this skill triggers, follow this order.

Step 0: Verify the bundled assets exist

Check:

bash
test -f skills/impeccable/SKILL.md
test -f skills/impeccable/references/typography.md
test -f skills/impeccable/workflows/critique.md

If any of these checks fail, the skill is not correctly installed in the current workspace.

Step 1: Classify the user's need

Choose the smallest matching workflow:

  • design context setup,
  • feature shaping,
  • build or redesign,
  • design critique,
  • technical audit,
  • final polish,
  • design-system extraction,
  • focused pass: typography, color, layout, motion, interaction, responsive behavior, or UX copy.
Step 2: Gate on design context before real design work

Before doing meaningful design work, confirm these minimum inputs:

  • target audience,
  • primary use cases or jobs to be done,
  • brand personality or interface tone.

Do not infer these from code alone.

If the user already supplied them in the current conversation, proceed. If not, ask the smallest number of targeted questions needed to unblock the work. If the user wants this context persisted for future sessions, ask before writing a local .impeccable.md.

Step 3: Load only the matching local workflow

Prefer the smallest relevant asset instead of reading everything:

For focused passes, load only the relevant references:

For critique scoring or persona framing, also load:

Step 4: Treat the detector CLI as optional runtime, not a default assumption

Only use the upstream detector when the user wants automated anti-pattern evidence, or when audit or critique would materially benefit from it.

First verify runtime prerequisites:

bash
command -v node
node --version
command -v npm
command -v npx
command -v impeccable

If impeccable is already installed, verify it with:

bash
impeccable --help

If the CLI is missing:

  • explain that the bundled NextClaw skill is ready, but the optional detector runtime is not,
  • keep going with the bundled references when the user only needs design guidance,
  • ask before any install or download step because npm install -g impeccable or npx impeccable ... changes local machine state.

If the detector is available, prefer a read-only smoke before a large scan:

bash
impeccable detect --fast --json <target>

Use --fast for large directories. Narrow scope before scanning very large repos.

Show full SKILL.md (421 more words)Show less

Workflow Routing Guidance

New feature or major redesign

Start with:

Then continue with:

Load the minimum supporting references based on the brief.

Existing UI needs feedback

Use:

If the issue sounds implementation-heavy rather than experiential, prefer:

Existing UI is close but not finished

Use:

Existing product has repeated patterns that should become a design system

Use:

Focused fixes without a full redesign

Choose the smallest relevant reference and stay scoped:

Safe Usage Rules

  • Do not start real design work until the minimum design context is known.
  • Prefer shaping before large greenfield frontend work.
  • Preserve the existing design system when the user is working within an established product.
  • Prefer read-only critique or audit before sweeping rewrites when the problem is still unclear.
  • Ask before writing .impeccable.md or installing/downloading the detector runtime.
  • Treat detector findings as evidence, not unquestionable truth; false positives must be called out.
  • Be honest when the result still feels generic or AI-generated.
  • Keep recommendations grounded in the user's product, not a stock aesthetic template.

Troubleshooting

Design context is missing
  • Stop guessing.
  • Ask the smallest targeted question set needed to recover the audience, use case, and tone.
The user wants critique or audit, but the detector CLI is unavailable
  • Continue with the bundled critique or audit workflow.
  • Be explicit that the result is expert review without detector evidence.
  • Offer the optional detector install path only if the user wants it.
The current repo already has a stricter design system
  • Follow the stricter local system.
  • Use Impeccable as a quality and taste layer, not as authority to override established product rules.
Detector output conflicts with good product judgment
  • Say so plainly.
  • Keep the detector result as a signal, but prioritize verified user impact and visual judgment.

Success Criteria

This skill is working correctly when:

  • design work starts from explicit audience, use case, and tone rather than guesswork,
  • the smallest relevant workflow or reference is loaded,
  • the resulting interface avoids obvious generic AI aesthetics,
  • critique and audit outputs are specific, prioritized, and actionable,
  • optional detector scans are only used when their runtime is actually ready,
  • and the skill raises the design bar without hiding setup reality.

Attribution

This skill adapts the upstream pbakaus/impeccable project for the NextClaw marketplace.

Source mapping is documented in references/SOURCES.md.

© Peiiii, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 20 other files (references) in skills/impeccable of Peiiii/nextclaw.

  • SKILL.md
  • UPSTREAM_LICENSE
  • UPSTREAM_NOTICE.md
  • marketplace.json
  • references/SOURCES.md
  • references/color-and-contrast.md
  • references/critique-cognitive-load.md
  • references/critique-heuristics-scoring.md
  • references/critique-personas.md
  • references/interaction-design.md
  • references/motion-design.md
  • references/responsive-design.md
  • references/spatial-design.md
  • references/typography.md
  • references/ux-writing.md
  • workflows/audit.md
  • workflows/craft.md
  • workflows/critique.md
  • workflows/extract.md
  • … and 2 more

Open the folder on GitHubat commit 973722e

Compare with similar skills

Impeccable 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 compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Impeccable this skillPeiiii/nextclaw260—~2.5kAutomated safety check: PassMIT
Web Artifacts Builderanthropics/skills180k41 repos~769Automated safety check: PassApache-2.0
React Doctormakeplane/plane61k12 repos~657Automated safety check: PassAGPL-3.0
Impeccablebestofjs/bestofjs3.1k27 repos~2.6kAutomated safety check: PassMIT
Figma Design System Builderwarpdotdev/warp65k2 repos~4.4kAutomated safety check: PassAGPL-3.0
Web Interface Guidelines Reviewervercel-labs/openreview1.7k98 repos~308Automated safety check: PassNone

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Questions about Impeccable

What does Impeccable do?

A skill your agent uses when the user wants distinctive, production-grade frontend design, anti-generic AI aesthetics, UX critique, technical UI audits, or final polish through bundled Impeccable…. Impeccable is an agent skill from Peiiii/nextclaw. Use when the user wants distinctive, production-grade frontend design, anti-generic AI aesthetics, UX critique, technical UI audits, or final polish through bundled Impeccable references and an optional upstream detector CLI.

When should I use Impeccable?

Impeccable fits situations like: the user wants distinctive; production-grade frontend design; anti-generic AI aesthetics; technical UI audits.

How do I install Impeccable in Claude Code?

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

How do I install Impeccable in Codex?

Run `npx skills add Peiiii/nextclaw --skill impeccable -a codex`. Or copy the skill folder (skills/impeccable in Peiiii/nextclaw) into .agents/skills/impeccable in your project. Codex loads it when a task matches its description.

Can I use Impeccable 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 Peiiii/nextclaw --skill impeccable -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, .gemini/skills/impeccable, .github/skills/impeccable and .opencode/skills/impeccable in your project.

What does Impeccable need to run?

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

Does Impeccable access the network?

SKILL.md names 1 domain. In commands or code: github.com; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.

Is Impeccable 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 use?

Impeccable is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Impeccable use?

About 2.5k tokens (SKILL.md is roughly 10k 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 15k tokens, read only when the agent opens those files.

What are the alternatives to Impeccable?

Skills that share tags, products or a category with Impeccable: Web Artifacts Builder (anthropics/skills, 180k stars), React Doctor (makeplane/plane, 61k stars), Impeccable (bestofjs/bestofjs, 3.1k stars) and Figma Design System Builder (warpdotdev/warp, 65k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Impeccable?

Peiiii (a GitHub user) maintains it in Peiiii/nextclaw, which has 260 GitHub stars. The repository holds 70 skills in this directory. The repository was last updated on October 7, 2026.

Source: Peiiii/nextclaw on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.