impeccable

impeccable is a skill for Claude Code, Codex from f-amine/vibe-stack. It costs 189 tokens per session (3,024 once invoked), scanned A, original, MIT.

Use when the user wants to design, redesign, shape, critique, audit, polish, clarify, distill, harden, optimize, adapt, animate, colorize, extract, or otherwise improve a frontend interface. Covers websites, landing pages, dashboards, product UI, app shells, components, forms, settings, onboarding, and empty states.…

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/f-amine/vibe-stack/impeccable
Any agent
npx skills add f-amine/vibe-stack --skill impeccable
Clone the repo
git clone --depth 1 https://github.com/f-amine/vibe-stack

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/f-amine/vibe-stack/impeccable.svg)](https://agentmods.dev/skills/f-amine/vibe-stack/impeccable)
Your own site
<a href="https://agentmods.dev/skills/f-amine/vibe-stack/impeccable"><img src="https://agentmods.dev/badge/skills/f-amine/vibe-stack/impeccable.svg" alt="Measured on agentmods" 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 3,024 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown No closer match found 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 $0.00189 $0.03024
Opus 5 $0.00095 $0.01512
Sonnet 5 $0.00038 $0.00605
Haiku 4.5 $0.00019 $0.00302

Measured today against content hash 1618b3863647, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 today.

The scan reads SKILL.md. This mod also ships 22 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.

.claude/skills/impeccable/SKILL.md · 169 lines

How it starts

The opening of the file, as written. The whole thing — 169 lines — stays where its author put it; the contents beside it link to each section on GitHub.

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.

Load both in one call:

node {{scripts_path}}/load-context.mjs

Consume the full JSON output. Never pipe through head, tail, grep, or jq. The output's contextDir field tells you where the files were resolved from.

If the output is already in this session's conversation history, don't re-run. Exceptions requiring a fresh load: you just ran {{command_prefix}}impeccable teach or {{command_prefix}}impeccable document (they rewrite the files), or the user manually edited one.

{{command_prefix}}impeccable live already warms context via live.mjs. If you've run live.mjs, don't also run load-context.mjs this session.

If PRODUCT.md is missing, empty, or placeholder ([TODO] markers, <200 chars): run {{command_prefix}}impeccable teach, then resume the user's original task with the fresh context. If the original task was {{command_prefix}}impeccable craft, resume into {{command_prefix}}impeccable shape before any implementation work.

Read the full file on GitHub · 169 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. today First seen · 169 lines · 189 tokens per session scan A 1618b3863647

Subscribe to this mod's changes

impeccable is a skill published in the GitHub repository f-amine/vibe-stack (21 stars, last pushed 2mo ago), licensed MIT. It adds 189 tokens to every session and 3,024 once invoked, about $0.0009 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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