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impeccable

impeccable is a skill for Codex from hugobowne/show-us-your-agent-skills. It costs 189 tokens per session (3,180 once invoked), scanned A, a copy of impeccable, MIT.

A set of instructions for designing and improving working website and app interfaces. It covers layouts such as landing pages, dashboards, forms, settings, and onboarding screens.

In plain words
What is it for?
Use it to create, redesign, critique, polish, or adapt frontend interfaces and their components.
Why use it?
It helps find and fix unclear, inconsistent, or unfinished interface design choices while editing the actual frontend code.

Skill for Codex

Written for Codex: agents/openai.yaml present.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is node .agents/skills/impeccable/scripts/load-context.mjs.

not rated 67repo 1mo ago A scan 189 tokens copy · 88% MIT

Good fit Use it to create, redesign, critique, polish, or adapt frontend interfaces and their components.

Compare 6 skills from other repositories ↓
View source ↗ hugobowne/show-us-your-agent-skills hugobowne.github.io
Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/hugobowne/show-us-your-agent-skills
agentmods
npx agentmods add skills/hugobowne/show-us-your-agent-skills/impeccable

Made for: 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/hugobowne/show-us-your-agent-skills/impeccable/github.svg)](https://agentmods.dev/skills/hugobowne/show-us-your-agent-skills/impeccable)
Your own site
<a href="https://agentmods.dev/skills/hugobowne/show-us-your-agent-skills/impeccable"><img src="https://agentmods.dev/badge/skills/hugobowne/show-us-your-agent-skills/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/hugobowne/show-us-your-agent-skills/impeccable"><img src="https://agentmods.dev/badge/skills/hugobowne/show-us-your-agent-skills/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 3,180 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 88% 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 $0.03180
Opus 5 $0.00095 $0.01590
Sonnet 5 $0.00038 $0.00636
Haiku 4.5 $0.00019 $0.00318

Measured 12d ago against content hash 25fec8d55d92, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, 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 12d ago.

The scan reads SKILL.md. This mod also ships 18 executable files (scripts/cleanup-deprecated.mjs, scripts/critique-storage.mjs, scripts/design-parser.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

88% identical to impeccable — 63 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.

skills/impeccable/SKILL.md · 171 lines

How it starts

The opening of the file, as written. The whole thing — 171 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Project: pbakaus/impeccable. "The design language that makes your AI harness better at design."

License: Apache License 2.0. Full license text is in LICENSE alongside this file. Impeccable builds on Anthropic's frontend-design skill; that attribution is in NOTICE.md.

Snapshot: Frozen copy of pbakaus/impeccable/.agents/skills/impeccable as of 2026-05-22. The maintained version lives upstream and may have evolved since this snapshot. Script paths inside this file (.agents/skills/impeccable/scripts/...) are upstream-relative and left unedited; adjust them to wherever you install the folder.

Modification notice: This file has been changed from the upstream original. The change is the addition of this blockquote header; the skill content below it is unmodified.

Designs and iterates production-grade frontend interfaces. Real working code, committed design choices, exceptional craft.

Setup

Before any design work or file edits:

  1. Load context (PRODUCT.md / DESIGN.md) via the loader script.
  2. Identify the register and load the matching register reference (brand.md or product.md).
  3. If the user invoked a sub-command (e.g. craft, shape, audit), load its reference file too. This is non-negotiable: craft without craft.md loaded means you'll skip the shape-and-confirm step the user expects.

Skipping these produces generic output that ignores the project.

1. Context gathering

Two files, case-insensitive. The loader looks at the project root by default and falls back to .agents/context/ and docs/ if the root is clean. Override with IMPECCABLE_CONTEXT_DIR=path/to/dir (absolute or relative to cwd).

  • PRODUCT.md: required. Users, brand, tone, anti-references, strategic principles.
  • DESIGN.md: optional, strongly recommended. Colors, typography, elevation, components.

Read the full file on GitHub · 171 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. 12d ago First seen · 171 lines · 189 tokens per session scan A 25fec8d55d92

Subscribe to this mod's changes

impeccable is a skill published in the GitHub repository hugobowne/show-us-your-agent-skills (67 stars, last pushed 1mo ago), licensed MIT. It adds 189 tokens to every session and 3,180 once invoked, about $0.0009 per session on Opus 5. A static security scan graded it A with 0 findings. It is 88% identical to impeccable, differing in 63 lines, and is treated as a copy.

CSS and stylingDesign and UXFrontend
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