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-data-listsgit 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-data-lists)<a href="https://agentmods.dev/skills/sechiro/vrcudonskills-for-codex/vrc-udon-data-lists"><img src="https://agentmods.dev/badge/skills/sechiro/vrcudonskills-for-codex/vrc-udon-data-lists/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-data-lists"><img src="https://agentmods.dev/badge/skills/sechiro/vrcudonskills-for-codex/vrc-udon-data-lists.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 | $0.00077 | $0.00390 |
| Opus 5.5 | $0.00031 | $0.00156 |
| Sonnet 5.5 | $0.00015 | $0.00078 |
| Haiku 4.5 | $0.00008 | $0.00039 |
Grade A, and why
vrc-udon-data-lists 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 2mo 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 Data Lists
役割
DataList を使うと明示された案件だけで、DataList 前提の設計と実装方針を与える。明示がない案件では使わない。
この Skill を使う場面
- ユーザーが DataList / Data Containers を明示した
- 既存プロジェクトが DataList 前提で組まれている
この Skill を使わない場面
- 通常案件
- 配列で十分な状態管理
使い方
- まず
references/datalist-rules.mdを読む。 - ユーザーが
DataList、Data Lists、Data Containersのいずれかを明示したか確認する。 - 明示がない場合はこの Skill を使わず、固定長配列を優先する。
- 明示がある場合だけ、DataList を使う理由と範囲を文書化する。
- 既存プロジェクトがすでに DataList 前提なら、その前提に合わせて実装する。
注意点
- デフォルト採用しない
- なんとなく便利そう、では選ばない
- 配列で足りるなら配列を使う
- DataList の正本と変換コストを意識する
What ships with it
2 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.
- 2mo ago First seen · 36 lines · 77 tokens per session scan A 8f0bf5c9ff3b
vrc-udon-data-lists is a skill published in the GitHub repository sechiro/VRCUdonSkills-for-Codex (58 stars, last pushed 6mo ago), licensed MIT. It adds 77 tokens to every session and 390 once invoked, about $0.0003 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 2026-08-30.
vrc-udon-data-lists compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| vrc-udon-data-listssechiro/VRCUdonSkills-for-Codex | Skill | 58 | 6mo ago | MIT | A | 77 | Codex |
| playtest-reportDonchitos/Claude-Code-Game-Studios | Skill | 36k | 18d ago | MIT | A | 20 | Claude Code |
| godot-signals-groupsgamedev-skills/awesome-gamedev-agent-skills | Skill | 6.9k | 9d ago | Apache-2.0 | A | 95 | Claude Code |
| scenario-unreal-gameplayscenario-labs/skills | Skill | 3.2k | yesterday | MIT | A | 121 | Claude Code |
| motionOpenDCAI/GameFactory-3A | Skill | 1.0k | 8d ago | Apache-2.0 | A | 0 | Claude Code, Codex |
| unity-addressablesBesty0728/Unity-Skills | Skill | 1.9k | yesterday | MIT | A | 25 | Claude Code, Codex |
| unity-manual-componentBesty0728/Unity-Skills | Skill | 1.9k | yesterday | MIT | A | 36 | Claude Code, Codex |