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 agentmods add skills/jackli12/codex-game-studio/start-game-projectnpx skills add jackli12/codex-game-studio --skill start-game-projectgit clone --depth 1 https://github.com/jackli12/codex-game-studioWrote 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/jackli12/codex-game-studio/start-game-project)<a href="https://agentmods.dev/skills/jackli12/codex-game-studio/start-game-project"><img src="https://agentmods.dev/badge/skills/jackli12/codex-game-studio/start-game-project.svg" alt="Measured on agentmods" 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 | $0.00061 | $0.00230 |
| Opus 5 | $0.00030 | $0.00115 |
| Sonnet 5 | $0.00012 | $0.00046 |
| Haiku 4.5 | $0.00006 | $0.00023 |
Grade A, and why
start-game-project 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 6d 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
Start Game Project
目标
把一个模糊的游戏想法整理成可执行的项目 brief，并把项目导向下一阶段。
何时使用
- 项目还停留在创意阶段
- 用户希望从零开始推进
工作流
- 抓出一句话定位
- 明确平台、玩家和体验目标
- 给出一个受控的初始范围
- 推荐下一步角色或流程
输出要求
- 项目 brief 草稿
- 初始范围
- 关键待解问题
- 下一步交接对象
参考资料
../shared/references/project-brief-template.md../shared/references/scope-control-guidelines.md
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.
- 6d ago First seen · 35 lines · 61 tokens per session scan A 6bcb3da5b7d7
start-game-project is a skill published in the GitHub repository jackli12/codex-game-studio (12 stars, last pushed 3mo ago), licensed MIT. It adds 61 tokens to every session and 230 once invoked, about $0.0003 per session on Opus 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.
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