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 sechiro/VRCUdonSkills-for-Codex --skill vrc-udon-project-docsgit clone --depth 1 https://github.com/sechiro/VRCUdonSkills-for-CodexWrote 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/sechiro/vrcudonskills-for-codex/vrc-udon-project-docs)<a href="https://agentmods.dev/skills/sechiro/vrcudonskills-for-codex/vrc-udon-project-docs"><img src="https://agentmods.dev/badge/skills/sechiro/vrcudonskills-for-codex/vrc-udon-project-docs/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/sechiro/vrcudonskills-for-codex/vrc-udon-project-docs"><img src="https://agentmods.dev/badge/skills/sechiro/vrcudonskills-for-codex/vrc-udon-project-docs.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 | $0.00142 | $0.00787 |
| Opus 5 | $0.00071 | $0.00394 |
| Sonnet 5 | $0.00028 | $0.00157 |
| Haiku 4.5 | $0.00014 | $0.00079 |
Grade A, and why
vrc-udon-project-docs 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 10d 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
VRC Udon Project Docs
役割
外部の VRChat UdonSharp プロジェクトに、そのプロジェクト自身が持つべき基本文書一式を入れる。Skill 側の知識と、導入先プロジェクト固有の仕様を分離するための土台を作る。
この Skill を最初に使う場面
- 新規プロジェクトや外部配布の土台を作る
- project-owned 文書を先にそろえたい
- 環境再現手順や公式参照先も含めて渡したい
この Skill を使わない場面
- モジュールの構造設計だけを進めたい場合:
vrc-udon-core-module - networking 文書だけを配りたい場合:
vrc-udon-networking-rules
進め方
references/doc-pack-guide.mdを読む。assets/templates/から必要なテンプレートを配置する。- 導入先プロジェクト固有の内容で埋める。
- 最低限そろえる。
AGENTS.md- 必要なら
.mcp.json docs/SYSTEM_SPEC.mddocs/ENVIRONMENT_SETUP.mddocs/OFFICIAL_REFERENCE_MAP.md- 必要なら
docs/UdonSharpProgramAsset_AutoGeneration.md - Builder があるなら
docs/SCENE_OBJECT_SPEC.md - 入口になる
README.md
- 仕様追加時の更新責任を project-owned 文書側に寄せる。
- imported 情報はそのまま正本にせず、project-owned 文書へ整理して反映する。
- UdonSharp の
.asset手動生成漏れを減らしたい案件ではassets/templates/Editor/UdonSharpProgramAssetAutoGenerator.csも配る。 - Unity MCP を使う案件では
assets/templates/.mcp.jsonも配り、接続先を project root で管理する。
担当範囲
- project-owned 文書雛形の配布
- 環境再現文書の配布
- 公式参照マップの配布
- 外部由来コードのライセンス同梱
- 必要な Editor 補助設定テンプレートの配布
注意点
- Skill 側の説明をそのまま仕様書にしない
- 実装責務と Ownership を文書で言い切る
- imported 参照は project-owned な文章へ翻訳してから残す
- 環境再現に必要な公式参照先も project-owned 文書として残す
.mcp.jsonは Unity MCP を使う案件だけに配る
What ships with it
12 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.
- agents/openai.yaml 335 B
- assets/templates/.mcp.json 113 B
- assets/templates/AGENTS.md 1.2 KB
- assets/templates/docs/ENVIRONMENT_SETUP.md 1.3 KB
- assets/templates/docs/OFFICIAL_REFERENCE_MAP.md 1.3 KB
- assets/templates/docs/SCENE_OBJECT_SPEC.md 842 B
- assets/templates/docs/SYSTEM_SPEC.md 1.2 KB
- assets/templates/docs/UdonSharpProgramAsset_AutoGeneration.md 1.3 KB
- assets/templates/Editor/UdonSharpProgramAssetAutoGenerator.cs 5.8 KB
- assets/templates/LICENSES/UdonSharpProgramAssetAutoGenerator.MIT.txt 1.4 KB
- assets/templates/README.md 1.8 KB
- references/doc-pack-guide.md 2.0 KB
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.
- 10d ago First seen · 57 lines · 142 tokens per session scan A a9b850b47ddc
vrc-udon-project-docs is a skill published in the GitHub repository sechiro/VRCUdonSkills-for-Codex (58 stars, last pushed 4mo ago), licensed MIT. It adds 142 tokens to every session and 787 once invoked, about $0.0007 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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