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.
git clone --depth 1 https://github.com/artherahq/skillsWrote 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/plugins/artherahq/skills/app-engineering-skills)<a href="https://agentmods.dev/plugins/artherahq/skills/app-engineering-skills"><img src="https://agentmods.dev/badge/plugins/artherahq/skills/app-engineering-skills/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/plugins/artherahq/skills/app-engineering-skills"><img src="https://agentmods.dev/badge/plugins/artherahq/skills/app-engineering-skills.svg" alt="Reviewed on agentmods" width="80" height="20"></a>Grade A, and why
app-engineering-skills 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 8d 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.
What it actually says
{
"name": "app-engineering-skills",
"version": "0.9.0",
"description": "Skills that help the user build and enforce their own app-engineering conventions — a design system of their choosing, reference-product UI patterns (X, TradingView, Trading212) for trading/investing apps, the category disciplines (dense terminals vs. conversational UI), the generation-time craft pass that keeps AI-built UI from reading as templated, plus editorial/poster styling for aria-code's own exports and for standalone creative assets across any domain — separate from the quant-research pipeline.",
"source": "./",
"homepage": "https://github.com/artherahq/skills",
"repository": "https://github.com/artherahq/skills",
"strict": false,
"skills": [
"./skills/industry-design-direction",
"./skills/ui-design-system",
"./skills/trading-ui-patterns",
"./skills/terminal-software-design",
"./skills/conversational-ui-restraint",
"./skills/ai-generated-ui-craft",
"./skills/ui-asset-sourcing",
"./skills/minimal-editorial-exports",
"./skills/minimal-editorial-poster"
]
}What it installs
The manifest is a name and a version. 9 skills travel with it, and installing the plugin installs all of them — 1,905 tokens a session between them. Each is measured on its own page, and each can be installed alone.
- Skill minimal-editorial-poster A 220 tokens
- Skill ui-asset-sourcing A 225 tokens
- Skill industry-design-direction A 249 tokens
- Skill minimal-editorial-exports A 206 tokens
- Skill conversational-ui-restraint A 190 tokens
- Skill trading-ui-patterns A 234 tokens
- Skill ai-generated-ui-craft A 146 tokens
- Skill ui-design-system A 191 tokens
- Skill terminal-software-design A 244 tokens
What ships with it
2 files beside marketplace.json#app-engineering-skills 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.
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.
- 8d ago First seen · 20 lines scan A f50d20e22ffc
app-engineering-skills is a plugin published in the GitHub repository artherahq/skills (2 stars, last pushed 7d ago), licensed Apache-2.0. Its token cost is not measured: this kind of file is read by the harness, not the model. 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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