UnitySkills is a REST API-based automation engine that lets AI coding agents control Unity Editor projects, including scenes and other editor operations. It is for developers using Unity with supported coding agents and IDEs. The catalogue skills and commands provide the agent workflows used to operate Unity projects through the engine.
Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/Besty0728/Unity-Skillsnpx agentmods add skills/besty0728/unity-skills/yooassetWrote 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/besty0728/unity-skills/yooasset)<a href="https://agentmods.dev/skills/besty0728/unity-skills/yooasset"><img src="https://agentmods.dev/badge/skills/besty0728/unity-skills/yooasset/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/besty0728/unity-skills/yooasset"><img src="https://agentmods.dev/badge/skills/besty0728/unity-skills/yooasset.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Excessive Agency · line 25 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
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 | $0.00014 | $0.04667 |
| Opus 5 | $0.00007 | $0.02334 |
| Sonnet 5 | $0.00003 | $0.00933 |
| Haiku 4.5 | $0.00001 | $0.00467 |
Grade A, and why
unity-yooasset 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.
How it starts
The opening of the file, as written. The whole thing — 200 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Before calling any skill in this module: if you are about to call a skill with parameters guessed from its name or description, STOP — read this file (or fetch its schema via
GET /skills/recommend?includeSchema=true) first. If you already have the parameter definitions from recommend/schema, you may proceed straight to dryRun.
Triggers
- Building or simulating YooAsset bundles
- Configuring collectors
- Validating hot-update assets
- 构建或模拟 YooAsset 资源包、配置 collector、校验热更资源
Unity YooAsset Skills
Editor-side automation for the YooAsset hot-update framework — build pipeline orchestration, Collector configuration CRUD, BuildReport analysis, PlayMode runtime validation, and companion YooAsset tools. Every skill wraps a concrete YooAsset Editor/runtime API path validated against 2.3.18 source. When the package is absent, every skill except yooasset_check_installed returns a NoYooAsset() error with install instructions.
Requires:
com.tuyoogame.yooasset≥ 2.3.15, Unity 2022.3+ (validated against 2.3.18). Strongly recommended: before writing ANY YooAsset runtime code, load yooasset-design. PlayMode / parameter-class / handle-lifecycle pitfalls are strict, and only the advisory module surfaces them.
Guardrails
Operating Mode (v1.9 three-tier):
- Approval (default): query/list/read skills (
yooasset_check_installed,yooasset_get_default_paths,yooasset_get_build_settings,yooasset_list_collector_packages,yooasset_list_collector_rules,yooasset_list_assetart_scanners,yooasset_runtime_get_validation_result,yooasset_load_build_report,yooasset_list_report_bundles,yooasset_get_bundle_detail,yooasset_list_report_assets,yooasset_get_asset_detail,yooasset_get_dependency_graph,yooasset_compare_build_reports,yooasset_list_independ_assets) run directly. Builders / Collector mutators / scanner runs / window-openers are FullAuto — onMODE_RESTRICTED, run the grant protocol. - Auto / Bypass: SemiAuto and FullAuto run directly.
- Auto-forbidden in this module:
MayEnterPlayMode = true→yooasset_runtime_validate_package,yooasset_runtime_cleanupSkillOperation.Delete→yooasset_remove_collector_package,yooasset_remove_collector_group,yooasset_remove_collector
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 · 200 lines · 14 tokens per session scan A 42ffda7dca79
unity-yooasset is a skill published in the GitHub repository Besty0728/Unity-Skills (1,727 stars, last pushed today), licensed MIT. It adds 14 tokens to every session and 4,667 once invoked, about $0.0001 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 2026-09-03.
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