Borrowing it
Nothing to install: this file belongs to wingedsheep/argentum-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.
curl -O https://raw.githubusercontent.com/wingedsheep/argentum-engine/main/.agents/skills/ai-playtest/SKILL.mdgit clone --depth 1 https://github.com/wingedsheep/argentum-engineWrote 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/wingedsheep/argentum-engine/ai-playtest)<a href="https://agentmods.dev/skills/wingedsheep/argentum-engine/ai-playtest"><img src="https://agentmods.dev/badge/skills/wingedsheep/argentum-engine/ai-playtest/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/wingedsheep/argentum-engine/ai-playtest"><img src="https://agentmods.dev/badge/skills/wingedsheep/argentum-engine/ai-playtest.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 | $0.00148 | $0.03372 |
| Opus 5.5 | $0.00059 | $0.01349 |
| Sonnet 5.5 | $0.00030 | $0.00674 |
| Haiku 4.5 | $0.00015 | $0.00337 |
Grade A, and why
ai-playtest 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 13d 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.
The source is not reproduced here
A licence we could not identify
The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.
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.
- 13d ago First seen · 210 lines · 148 tokens per session scan A 98aefb0a2f51
ai-playtest is a skill published in the GitHub repository wingedsheep/argentum-engine (81 stars, last pushed today), with no licence file. It adds 148 tokens to every session and 3,372 once invoked, about $0.0006 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 2026-10-17.
Other skills, from other repositories
unity-pipeline
Drive a running Unity Editor or development Player from the command line via the unity-pipeline package — install the package, keep the editor ticking while unfocused, run the edit→recompile→runtests loop, evaluate C#, and hot-reload files at runtime. Use when an agent needs to control a live Unity instance, automate…
unity-cli
A command-line tool for checking and operating a Unity project, including its open scenes, game objects, assets, tests, compilation, and build checks. Unity is a game engine and editor.
mtg-forja
Analiza mazos de Magic: The Gathering y produce guías de sinergias, chuletas imprimibles y mapas interactivos, con todas las interacciones verificadas contra el texto de oráculo real. Úsala siempre que aparezca una lista de mazo, una captura del gestor de mazos de MTG Arena, o cualquier pregunta sobre combos…
godot-development
Godot 4 reference patterns: signal-vs-call and physics-body decision tables, resource sharing traps, input handling, a common mistakes catalog, a GDScript to C# rosetta, typed class structure, pooling, autoloads, GUT tests, and collision layer constants. Use when designing, writing, or reviewing Godot 4 code.
soak-test
Soak test protocol for extended play — what to observe and log for slow leaks, fatigue, late-appearing edge cases.
team-polish
Orchestrate the polish team — performance-analyst, technical-artist, sound-designer, qa-tester — to optimize and harden a feature or area.