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.
npx skills add boussadjra/vuestrata --skill impeccablegit clone --depth 1 https://github.com/boussadjra/vuestrataWrote 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.
[](https://agentmods.dev/skills/boussadjra/vuestrata/impeccable)<a href="https://agentmods.dev/skills/boussadjra/vuestrata/impeccable"><img src="https://agentmods.dev/badge/skills/boussadjra/vuestrata/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.
<a href="https://agentmods.dev/skills/boussadjra/vuestrata/impeccable"><img src="https://agentmods.dev/badge/skills/boussadjra/vuestrata/impeccable.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00189 | $0.03337 |
| Opus 5 | $0.00095 | $0.01669 |
| Sonnet 5 | $0.00038 | $0.00667 |
| Haiku 4.5 | $0.00019 | $0.00334 |
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 10d ago.
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.
This is a copy
81% identical to impeccable — 87 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.
How it starts
The opening of the file, as written. The whole thing — 177 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 (non-optional)
Before any design work or file edits, pass these gates. Skipping them produces generic output that ignores the project.
| Gate | Required check | If fail |
|---|---|---|
| Context | The PRODUCT.md / DESIGN.md loader result is known from node .agents/skills/impeccable/scripts/load-context.mjs. |
Run the loader before continuing. |
| Product | PRODUCT.md exists and is not empty or placeholder ([TODO] markers, <200 chars). |
Run $impeccable teach, refresh context, then resume. Never synthesize PRODUCT.md from the user's original prompt alone. |
| Command | The matching command reference is loaded when a sub-command is used. | Load the reference before continuing. |
| Craft | $impeccable craft has a user-confirmed shape brief for this task. teach / PRODUCT.md never counts as shape. |
Run $impeccable shape and wait for explicit brief confirmation. |
| Image | Required visual probes / mocks are generated or skipped with a reason. | Resolve the image-generation gate in shape.md or craft.md before code. |
| Mutation | All active gates above pass. | Do not edit project files yet. |
Codex-style agents must state this before editing files:
IMPECCABLE_PREFLIGHT: context=pass product=pass command_reference=pass shape=pass|not_required image_gate=pass|skipped:<reason> mutation=open
For $impeccable craft, shape=pass is only valid after a separate user response approving the shape design brief, or when the user provided an already-confirmed brief in the request. Do not mark shape=pass after writing PRODUCT.md, summarizing assumptions, or drafting an unconfirmed brief yourself.
Other harnesses should follow the same checklist when they can expose this state.
What ships with it
51 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.
- agents/openai.yaml 236 B
- reference/adapt.md 6.4 KB
- reference/animate.md 7.8 KB
- reference/audit.md 7.7 KB
- reference/bolder.md 6.5 KB
- reference/brand.md 10 KB
- reference/clarify.md 6.1 KB
- reference/cognitive-load.md 4.7 KB
- reference/color-and-contrast.md 6.0 KB
- reference/colorize.md 8.0 KB
- reference/craft.md 14 KB
- reference/critique.md 14 KB
- reference/delight.md 9.7 KB
- reference/distill.md 5.6 KB
- reference/document.md 28 KB
- reference/extract.md 3.5 KB
- reference/harden.md 8.5 KB
- reference/heuristics-scoring.md 9.2 KB
- reference/interaction-design.md 7.1 KB
- reference/layout.md 8.0 KB
- reference/live.md 48 KB
- reference/motion-design.md 5.9 KB
- reference/onboard.md 7.6 KB
- reference/optimize.md 7.5 KB
- reference/overdrive.md 9.0 KB
- reference/personas.md 7.2 KB
- reference/polish.md 12 KB
- reference/product.md 4.1 KB
- reference/quieter.md 4.9 KB
- reference/responsive-design.md 3.4 KB
- reference/shape.md 9.4 KB
- reference/spatial-design.md 3.6 KB
- reference/teach.md 9.5 KB
- reference/typeset.md 6.2 KB
- reference/typography.md 8.2 KB
- reference/ux-writing.md 5.1 KB
- scripts/cleanup-deprecated.mjs 8.8 KB runs code
- scripts/command-metadata.json 7.8 KB
- scripts/design-parser.mjs 24 KB runs code
- scripts/detect-csp.mjs 6.6 KB runs code
- scripts/is-generated.mjs 2.2 KB runs code
- scripts/live-accept.mjs 22 KB runs code
- scripts/live-browser.js 193 KB runs code
- scripts/live-inject.mjs 17 KB runs code
- scripts/live-poll.mjs 6.7 KB runs code
- scripts/live-server.mjs 27 KB runs code
- scripts/live-wrap.mjs 24 KB runs code
- scripts/live.mjs 8.6 KB runs code
- scripts/load-context.mjs 5.0 KB runs code
- scripts/modern-screenshot.umd.js 45 KB runs code
- scripts/pin.mjs 6.0 KB runs code
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.
- 10d ago First seen · 177 lines · 189 tokens per session scan A 63aeb34ee01f
impeccable is a skill published in the GitHub repository boussadjra/vuestrata (111 stars, last pushed 2d ago), licensed MIT. It adds 189 tokens to every session and 3,337 once invoked, about $0.0009 per session on Opus 5. A static security scan graded it A with 0 findings. It is 81% identical to impeccable, differing in 87 lines, and is treated as a copy.
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