A set of guidelines for designing, reviewing, and improving frontend interfaces such as websites, dashboards, forms, and app screens.

Use it to create, redesign, critique, polish, optimize, or adapt frontend pages and components.

It provides a structured way to find and fix problems in layout, clarity, appearance, interaction, and accessibility.

How Pasta-Devs/Marinara-Engine configures Codex

Reuse

Borrowing it

Nothing to install: this file belongs to Pasta-Devs/Marinara-Engine. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/Pasta-Devs/Marinara-Engine/main/.agents/skills/impeccable/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/Pasta-Devs/Marinara-Engine

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/pasta-devs/marinara-engine/impeccable/github.svg)](https://agentmods.dev/skills/pasta-devs/marinara-engine/impeccable)

Your own site

<a href="https://agentmods.dev/skills/pasta-devs/marinara-engine/impeccable"><img src="https://agentmods.dev/badge/skills/pasta-devs/marinara-engine/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/pasta-devs/marinara-engine/impeccable"><img src="https://agentmods.dev/badge/skills/pasta-devs/marinara-engine/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 3,332 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. Third-party audits

NVIDIA SkillSpector warn 7 Sept 2026

SkillSpector: 6 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

medium Prompt Injection · line 12
Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.

Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
medium Prompt Injection · line 12
Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.

Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
medium Prompt Injection · line 14
Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.

Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
medium Prompt Injection · line 16
Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.

Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
medium Prompt Injection · line 19
Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.

Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
medium Prompt Injection · line 19
Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.

Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be

How audits are shown

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.

Model	Per session	Once invoked
Fable 5.1	$0.00189	$0.03332
Opus 5.5	$0.00076	$0.01333
Sonnet 5.5	$0.00038	$0.00666
Haiku 4.5	$0.00019	$0.00333

Measured 2mo ago against content hash 1b901dee150e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 2mo ago.

The scan reads SKILL.md. This mod also ships 14 executable files (scripts/cleanup-deprecated.mjs, scripts/design-parser.mjs, scripts/detect-csp.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.

.agents/skills/impeccable/SKILL.md · 177 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Files

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.

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.

2mo ago First seen · 177 lines · 189 tokens per session scan A 1b901dee150e

Subscribe to this mod's changes

impeccable is a skill published in the GitHub repository Pasta-Devs/Marinara-Engine (758 stars, last pushed yesterday), licensed AGPL-3.0. It adds 189 tokens to every session and 3,332 once invoked, about $0.0008 per session on Opus 5.5. 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 2026-08-30.

Design and UX Frontend ai ai-agents ai-agents-framework local

impeccable next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
impeccablePasta-Devs/Marinara-Engine	Skill	758	yesterday	AGPL-3.0	A	189	Codex
design-qadamianvtran/local-operator	Skill	229	today	MIT	A	50	Claude Code, Codex
frontend-designmonkilabs/opencastle	Skill	80	yesterday	MIT	A	48	Claude Code, Codex
figma-designmonkilabs/opencastle	Skill	80	yesterday	MIT	A	39	Claude Code, Codex
accessibility-standardsmonkilabs/opencastle	Skill	80	yesterday	MIT	A	53	Claude Code, Codex
orchardcore-adminCrestApps/CrestApps.AgentSkills	Skill	13	16d ago	MIT	A	189	Claude Code
orchardcore-flow-bagpartCrestApps/CrestApps.AgentSkills	Skill	13	16d ago	MIT	A	186	Claude Code

Marinara-Engine: Skill for Codex