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 YunYouJun/advjs --skill adv-themegit clone --depth 1 https://github.com/YunYouJun/advjsWrote 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/yunyoujun/advjs/adv-theme)<a href="https://agentmods.dev/skills/yunyoujun/advjs/adv-theme"><img src="https://agentmods.dev/badge/skills/yunyoujun/advjs/adv-theme/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/yunyoujun/advjs/adv-theme"><img src="https://agentmods.dev/badge/skills/yunyoujun/advjs/adv-theme.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 | $0.00089 | $0.01879 |
| Opus 5.5 | $0.00036 | $0.00752 |
| Sonnet 5.5 | $0.00018 | $0.00376 |
| Haiku 4.5 | $0.00009 | $0.00188 |
Grade A, and why
adv-theme 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 4d 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.
How it starts
The opening of the file, as written. The whole thing — 115 lines — stays where its author put it; the contents beside it link to each section on GitHub.
ADV Theme
Give a game a UI that belongs to its story, using the lightest layer that achieves the look, and prove it with adv check and screenshots you have actually looked at.
Tools
| Need | CLI | MCP |
|---|---|---|
| Story brief | adv context |
adv://project/overview |
| Token contract, contrast pairs, presets, current theme state | adv context --theme |
adv://theme (JSON) |
| Start from a preset | adv theme init --preset <id> [--force] |
— |
| Diagnostics | adv check --json (ADV_THEME_* codes) |
adv_validate |
| Screenshots | adv theme screenshot [--viewport name=WxH] [--url <dev server>] |
adv_theme_screenshot (returns images) |
Screenshots need Playwright with Chromium in the project (npm i -D playwright && npx playwright install chromium). Without --url, the command starts the same project preview the desktop app uses; pass --url to reuse a preview that is already running.
Workflow
1. Read the brief
Run adv context and adv context --theme. From the world, outline, scenes and characters, write a five-line art direction before touching any file:
- Setting and era — where the eye is (rain-slick city, Song-dynasty teahouse, school rooftop).
- Mood — two or three words (wary, tender, feverish).
- Materials — what UI surfaces would be made of in that world (glass HUD, rice paper, lacquer, chalkboard).
- Palette — one dominant surface, one ink, one accent, one alert/focus colour, each with a reason from the story.
- Type — a body stack that reads CJK well at 20–22px, and an optional display stack. Device font stacks only, ending in a generic family; no web fonts unless the project already ships them.
What ships with it
3 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.
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.
- 4d ago First seen · 115 lines · 89 tokens per session scan A 8295478aa045
adv-theme is a skill published in the GitHub repository YunYouJun/advjs (330 stars, last pushed 5d ago), licensed MPL-2.0. It adds 89 tokens to every session and 1,879 once invoked, about $0.0004 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 2026-11-02.
adv-theme compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| adv-themeYunYouJun/advjs | Skill | 330 | 5d ago | MPL-2.0 | A | 89 | Codex |
| ux-designDonchitos/Claude-Code-Game-Studios | Skill | 36k | 18d ago | MIT | A | 31 | Claude Code |
| scenario-unity-uiscenario-labs/skills | Skill | 3.2k | yesterday | MIT | A | 124 | Claude Code |
| game-craftalfredxw/denova | Skill | 986 | yesterday | Apache-2.0 | A | 92 | Claude Code, Codex |
| anti-cheat-systemsgmh5225/awesome-game-security | Skill | 3.7k | today | MIT | A | 46 | Claude Code |
| reverse-engineering-toolsgmh5225/awesome-game-security | Skill | 3.7k | today | MIT | A | 38 | Claude Code |
| game-supply-chain-securitygmh5225/awesome-game-security | Skill | 3.7k | today | MIT | A | 41 | Claude Code |