impeccable

impeccable is a skill for Claude Code, Codex from mrDesign-ww/vault-os. It costs 189 tokens per session (2,448 once invoked), scanned A, a copy of impeccable, MIT.

A set of instructions for designing, redesigning, reviewing, and refining frontend interfaces such as websites, dashboards, forms, and app screens. It also covers interface code and visual checks.

In plain words
What is it for?
It helps create or improve layouts, components, forms, settings pages, onboarding screens, empty states, colors, animations, and responsive interfaces.
Why use it?
It gives the agent a defined process for improving both the appearance and usability of an interface instead of making isolated cosmetic changes.

Skill for Claude CodeCodex

Written for Claude Code and Codex: allowed-tools in frontmatter, but also agents/openai.yaml present. Also seen: reads .claude/ paths.

Good fit It helps create or improve layouts, components, forms, settings pages, onboarding screens, empty states, colors, animations, and responsive interfaces.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mrdesign-ww/vault-os/impeccable
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add mrDesign-ww/vault-os --skill impeccable
Clone the repo
git clone --depth 1 https://github.com/mrDesign-ww/vault-os

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for impeccable

README.md
[![agentmods](https://agentmods.dev/badge/skills/mrdesign-ww/vault-os/impeccable/github.svg)](https://agentmods.dev/skills/mrdesign-ww/vault-os/impeccable)
Your own site
<a href="https://agentmods.dev/skills/mrdesign-ww/vault-os/impeccable"><img src="https://agentmods.dev/badge/skills/mrdesign-ww/vault-os/impeccable/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for impeccable

Your own site · 80×15
<a href="https://agentmods.dev/skills/mrdesign-ww/vault-os/impeccable"><img src="https://agentmods.dev/badge/skills/mrdesign-ww/vault-os/impeccable.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 189 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,448 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 92% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00189 $0.02448
Opus 5 $0.00095 $0.01224
Sonnet 5 $0.00038 $0.00490
Haiku 4.5 $0.00019 $0.00245

Measured 4d ago against content hash 574331ee26a4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

impeccable scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

The scan reads SKILL.md. This mod also ships 15 executable files (scripts/concept-seed.mjs, scripts/context-signals.mjs, scripts/context.mjs, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

92% identical to impeccable — 27 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

shell/claude/skills/impeccable/SKILL.md · 86 lines

How it starts

The opening of the file, as written. The whole thing — 86 lines — stays where its author put it; the contents beside it link to each section on GitHub.

This skill gives you the tools and permission to create design that earns to be called out-of-distribution craft: Whereas before, your design work would have been safe, timid and measured, you now approach every design task as a award-winning design director with impeccable understanding for what makes exceptional design work: production-grade code, peak creativity, a clear POV, deep understanding of the needs of the client and users, and exceptional craft.

Core principles:

  • Go all out. No hedging, no shortcuts. The deliverable must be complete (except assets the user must provide).
  • Dream big and bold. Distinct, beautiful, outstanding and highly inspiring work.
  • Verify in bounded passes, not a loop, and the ceiling covers the whole cycle: screenshots, defect scans, micro-edits, and rebuilds alike. Build fully, inspect once with a batched round (desktop and mobile together), fix everything it shows in one batch, confirm with at most one more round, and stop polishing. Open-ended self-QA burns the user's money doing worse what the finish handoffs do better.

Setup

  1. Run node .claude/skills/impeccable/scripts/context.mjs once per session (if the runtime shows this skill's loaded base directory, run node <skill-base-dir>/scripts/context.mjs; keep cwd at the user's project). Pass a named source file or route as --target <path>. It loads PRODUCT.md, DESIGN.md, the matching surface brief, and native-platform guidance when applicable; follow its directives and do not rerun it.
  2. Before acting, load the one playbook that owns the request: the Commands table's reference for an explicit or clearly implied sub-command, or reference/new-work.md for a new surface or replacement visual world. Then inspect the target and at least one representative source of incumbent visual truth (tokens, theme, CSS, component, or asset) before editing.
  3. After analysis and direction are resolved, load reference/craft-floor.md immediately before editing UI. It carries the quality floor, the absolute bans, and the reflexes no detector catches. Do not load it for planning-only work.

Read the full file on GitHub · 86 lines

Files

What ships with it

60 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago Changed · +6 lines 574331ee26a4
  2. 7d ago First seen · 80 lines · 189 tokens per session scan A a1ea82ce80f4

Subscribe to this mod's changes

impeccable is a skill published in the GitHub repository mrDesign-ww/vault-os (2 stars, last pushed 5d ago), licensed MIT. It adds 189 tokens to every session and 2,448 once invoked, about $0.0009 per session on Opus 5. A static security scan graded it A with 0 findings. It is 92% identical to impeccable, differing in 27 lines, and is treated as a copy.

Related

Other skills, from other repositories

web-design-reviewer

This skill enables visual inspection of websites running locally or remotely to identify and fix design issues. Triggers on requests like "review website design", "check the UI", "fix the layout", "find design problems". Detects issues with responsive design, accessibility, visual consistency, and layout breakage…

Galaxy-Dawn/claude-scholar · 74 tokens

ui-web

Web UI - glassmorphism, Tailwind, dark mode, accessibility.

alinaqi/maggy · 17 tokens

mulmoterminal-theme

Build a colour scheme of your own for MulmoTerminal — one that joins Midnight, Nord, Daylight and Solarized in Settings' theme picker and can then be pinned per project. Writes themes in /.mulmoterminal/config.json, the whole-app palette (panels, borders, accent, text), which has no UI for creating one — Settings only…

receptron/mulmoterminal · 168 tokens

taste

Use when improving the visual taste, positioning, polish, trust, and conversion clarity of a website or product UI. Runs a category-first visual audit, applies a decisive design pass, and verifies the result with screenshots rather than subjective vibes.

tryproduck/produck-skills · 49 tokens

ijfw-ui-spec

Use when the user says: 'ui spec', 'design contract', 'ui audit setup', 'lock the design', 'visual contract', 'ui review setup', or '/ijfw-ui-spec'. Produces UI-SPEC.md as the visual design contract before any frontend or visual-artifact build, and dispatches ijfw-ui-auditor as the final 6-pillar gate.

FerroxLabs/ijfw · 83 tokens

frontend-design

Create distinctive, production-grade frontend interfaces with high design quality. Use when the user asks to build landing pages, websites, dashboards, web components, or any frontend UI. Generates creative, polished code that avoids generic AI aesthetics.

tobihagemann/turbo · 48 tokens