Agent skill

Unity Yooasset

Automate YooAsset hot-update and asset bundles. An agent skill from Besty0728/Unity-Skills.

Install Unity Yooasset

skills CLI

$ npx skills add Besty0728/Unity-Skills --skill unity-yooasset -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install Besty0728/Unity-Skills unity-yooasset --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/Besty0728/Unity-Skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/'SkillsForUnity/unity-skills~/skills/yooasset' .claude/skills/unity-yooasset && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "unity-yooasset" agent skill from https://github.com/Besty0728/Unity-Skills/tree/main/SkillsForUnity/unity-skills~/skills/yooasset into .claude/skills/unity-yooasset/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unity-yooasset", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/Besty0728/Unity-Skills/tree/main/SkillsForUnity/unity-skills~/skills/yooasset

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add Besty0728/Unity-Skills --skill unity-yooasset -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install Besty0728/Unity-Skills unity-yooasset --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Besty0728/Unity-Skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/'SkillsForUnity/unity-skills~/skills/yooasset' .agents/skills/unity-yooasset && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "unity-yooasset" agent skill from https://github.com/Besty0728/Unity-Skills/tree/main/SkillsForUnity/unity-skills~/skills/yooasset into .agents/skills/unity-yooasset/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unity-yooasset", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add Besty0728/Unity-Skills --skill unity-yooasset -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install Besty0728/Unity-Skills unity-yooasset --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Besty0728/Unity-Skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/'SkillsForUnity/unity-skills~/skills/yooasset' .cursor/skills/unity-yooasset && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "unity-yooasset" agent skill from https://github.com/Besty0728/Unity-Skills/tree/main/SkillsForUnity/unity-skills~/skills/yooasset into .cursor/skills/unity-yooasset/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unity-yooasset", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/Besty0728/Unity-Skills.git --path 'SkillsForUnity/unity-skills~/skills/yooasset'

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add Besty0728/Unity-Skills --skill unity-yooasset -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install Besty0728/Unity-Skills unity-yooasset --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Besty0728/Unity-Skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/'SkillsForUnity/unity-skills~/skills/yooasset' .gemini/skills/unity-yooasset && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "unity-yooasset" agent skill from https://github.com/Besty0728/Unity-Skills/tree/main/SkillsForUnity/unity-skills~/skills/yooasset into .gemini/skills/unity-yooasset/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unity-yooasset", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install Besty0728/Unity-Skills unity-yooasset

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add Besty0728/Unity-Skills --skill unity-yooasset -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/Besty0728/Unity-Skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/'SkillsForUnity/unity-skills~/skills/yooasset' .github/skills/unity-yooasset && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "unity-yooasset" agent skill from https://github.com/Besty0728/Unity-Skills/tree/main/SkillsForUnity/unity-skills~/skills/yooasset into .github/skills/unity-yooasset/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unity-yooasset", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add Besty0728/Unity-Skills --skill unity-yooasset -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install Besty0728/Unity-Skills unity-yooasset --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Besty0728/Unity-Skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/'SkillsForUnity/unity-skills~/skills/yooasset' .opencode/skills/unity-yooasset && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "unity-yooasset" agent skill from https://github.com/Besty0728/Unity-Skills/tree/main/SkillsForUnity/unity-skills~/skills/yooasset into .opencode/skills/unity-yooasset/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unity-yooasset", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: unity-yooasset
GitHub stars: 1.8k
Token cost: ~4.6k tokens
SKILL.md length: 1,382 words
Files: 1
Skills in repo: 82
Repo updated: Oct 8, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Automate YooAsset hot-update and asset bundles. An agent skill from Besty0728/Unity-Skills.

Works in 10 steps: yooasset_check_installed is the ONLY… → Pipeline ↔ Parameters pairing is… → packageVersion="auto" fills… → …
Game Development work in your project
SKILL.md covers Triggers, Guardrails, Skills and Quick Start, plus 3 more sections
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Unity Yooasset is an agent skill from Besty0728/Unity-Skills. Automate YooAsset hot-update and asset bundles

Its SKILL.md is about 4.6k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Game Development. The repository describes itself as: AI automation skills specifically designed for Unity. The licence is MIT.

When your agent uses it

Game Development work in your project

Example prompts

“/unity-yooasset”

Workflow steps

10 steps, taken from the first numbered list in SKILL.md.

yooasset_check_installed is the ONLY skill that works without YOO_ASSET compile define. Every other skill returns NoYooAsset() — correct…
Pipeline ↔ Parameters pairing is enforced. yooasset_build_bundles pipeline=ScriptableBuildPipeline uses ScriptableBuildParameters…
packageVersion="auto" fills DateTime.UtcNow.ToString("yyyyMMddHHmm"). Pass a semver string when you want deterministic versioning.
yooasset_add_collector validates collectPath via AssetDatabase.LoadAssetAtPath. Paths must be under Assets/...; absolute or relative ../…
Rule names in Create Skills are CLASS names, not display names. Use yooasset_list_collector_rules to discover valid values (e.g…
Collector mutations can save immediately or be batched. Create skills mark IsDirty=true; modify/remove skills expose save=true. For bulk…
yooasset_build_bundles is NOT undo-tracked (external file I/O, not scene/asset state). clearBuildCache=true re-runs the full pipeline…
BuildReport lives next to bundles as a .report file — YooAsset 2.3.18 writes it as ////_.report. Do not pass BuildReport.json, _.json, or…
Runtime validation may enter PlayMode. yooasset_runtime_validate_package is intentionally async; poll the job result and use…
yooasset_list_independ_assets identifies assets not referenced by any main asset — candidates for the Collector to drop. Verify manually…

What it can do on your machine

Read from SKILL.md and the folder at commit 15a1925. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are python).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Unity Yooasset loads about 4.6k tokens when it runs. Until then it costs about 15 tokens; SKILL.md has 1,382 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~15
When it runs · the whole SKILL.md, loaded when a task matches: ~4.6k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from Besty0728/Unity-Skills at commit 15a1925, republished under its MIT licence (© Besty0728). 1,382 words, ~4,613 tokens.

Download SKILL.mdSave it as .claude/skills/unity-yooasset/SKILL.md (or your agent's skills folder).

name: unity-yooasset
description: Automate YooAsset hot-update and asset bundles

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 — on MODE_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_cleanup
- SkillOperation.Delete → yooasset_remove_collector_package, yooasset_remove_collector_group, yooasset_remove_collector
Reachable only under Bypass mode or via a user-managed Allowlist entry; the grant flow returns MODE_FORBIDDEN. Note yooasset_build_bundles runs heavy disk I/O but has no Reload/PlayMode flag, so it stays grantable.
When com.tuyoogame.yooasset is missing, every skill except yooasset_check_installed returns a NoYooAsset() error with install instructions.

DO NOT (common hallucinations):

yooasset_initialize / yooasset_load_asset / yooasset_create_downloader — do NOT exist as general-purpose REST skills. Runtime APIs (YooAssets.Initialize, default-package YooAssets.LoadAssetAsync, ResourcePackage.LoadAssetAsync, RequestPackageVersionAsync, CreateResourceDownloader) belong in game code. Use yooasset-design when writing runtime code.
yooasset_modify_group / yooasset_delete_collector / yooasset_open_scanner_window — wrong names. Use the exact schema names below or query GET /skills/schema?category=YooAsset.
yooasset_install — NOT a skill. Package install is a Package Manager user action.
Do NOT pass timeout to yooasset_build_bundles — the property was removed in YooAsset 2.3.16. Runtime watchdog now lives on CacheFileSystemParameters.DOWNLOAD_WATCH_DOG_TIME (runtime concern, not a build parameter).
Do NOT call yooasset_build_bundles while EditorUserBuildSettings.isBuildingPlayer == true — BuildParameters.CheckBuildParameters throws.

Routing:

Collector configuration (packages, groups, collectors, rules) → this module.
Actual bundle build + simulate + paths → this module.
Build report analysis (bundle size, asset list/detail, dependency graph, report compare, orphan) → this module.
Runtime validation in Editor PlayMode → yooasset_runtime_validate_package + polling/cleanup skills in this module.
Runtime code generation/design (Initialize / Load / Download / Scene in game scripts) → write it yourself using yooasset-design.
YooAsset companion windows and AssetArtScanner config/runs → this module.
Version-policy decisions (2.x vs pre-2.3.15 manifest, FindAssetType on IFilterRule) → yooasset-design/PITFALLS.md.

Skills

Environment (1)

Skill	Purpose	Key Parameters
`yooasset_check_installed`	Reflection probe — works even when the package is missing. Reports runtime assembly, package version, editor availability, and which of the 4 pipelines are present.	(none)

Build pipeline (7)

Skill	Purpose	Key Parameters
`yooasset_build_bundles`	Build bundles via `ScriptableBuildPipeline` or `RawFileBuildPipeline`. Writes to `<projectPath>/Bundles/<PackageName>/<Version>`.	`packageName`, `packageVersion="auto"`, `pipeline="ScriptableBuildPipeline"`, `buildTarget?`, `compression="LZ4"`, `fileNameStyle="HashName"`, `clearBuildCache=false`, `useAssetDependencyDB=true`, `verifyBuildingResult=true`, `replaceAssetPathWithAddress=false`, `stripUnityVersion=false`, `disableWriteTypeTree=false`, `trackSpriteAtlasDependencies=false`, `writeLinkXML=true`, `cacheServerHost=""`, `cacheServerPort=0`, `builtinShadersBundleName=""`, `monoScriptsBundleName=""`, `includePathInHash=false`, `buildinFileCopyOption="None"`, `buildinFileCopyParams=""`, `enableLog=true`
`yooasset_simulate_build`	Run `AssetBundleSimulateBuilder.SimulateBuild` for an `EditorSimulateMode` package — virtual bundles only, no files written.	`packageName`
`yooasset_get_default_paths`	Return `BuildOutputRoot` + `StreamingAssetsRoot` that YooAsset uses.	(none)
`yooasset_get_build_settings`	Read persisted YooAsset AssetBundle Builder EditorPrefs for a package/pipeline.	`packageName`, `pipeline?`
`yooasset_set_build_settings`	Persist AssetBundle Builder EditorPrefs for repeatable build UI defaults.	`packageName`, `pipeline?`, `compression?`, `fileNameStyle?`, `buildinFileCopyOption?`, `buildinFileCopyParams?`, `encryptionServicesClassName?`, `manifestProcessServicesClassName?`, `manifestRestoreServicesClassName?`, `clearBuildCache?`, `useAssetDependencyDB?`
`yooasset_open_builder_window`	Open the YooAsset `AssetBundle Builder` Editor window.	(none)
`yooasset_open_collector_window`	Open the YooAsset `AssetBundle Collector` Editor window.	(none)

YooAsset tools (8)

Skill	Purpose	Key Parameters
`yooasset_open_reporter_window`	Open the YooAsset AssetBundle Reporter window.	(none)
`yooasset_open_debugger_window`	Open the YooAsset AssetBundle Debugger window.	(none)
`yooasset_open_assetart_scanner_window`	Open the YooAsset AssetArt Scanner window.	(none)
`yooasset_list_assetart_scanners`	List AssetArtScanner configurations, optionally filtered by keyword.	`keyword?`
`yooasset_run_assetart_scanner`	Run one scanner and optionally save its report file.	`scannerGUID`, `saveDirectory?`
`yooasset_run_all_assetart_scanners`	Run all scanners, optionally filtered by keyword.	`keyword?`
`yooasset_import_assetart_scanner_config`	Import AssetArtScanner JSON config.	`configPath`
`yooasset_export_assetart_scanner_config`	Export AssetArtScanner JSON config.	`configPath`

Runtime validation (3)

Skill	Purpose	Key Parameters
`yooasset_runtime_validate_package`	Start an async PlayMode job that initializes `EditorSimulateMode`, sets default package, optionally validates one asset load/release and downloader status, then optionally cleans up and returns to Edit Mode.	`packageName`, `assetLocation?`, `restoreEditMode=true`, `cleanup=true`, `checkDownloader=true`, `downloadingMaxNumber=4`, `failedTryAgain=1`
`yooasset_runtime_get_validation_result`	Poll the runtime validation job status/result.	`jobId`
`yooasset_runtime_cleanup`	Remove completed validation jobs and optionally force `YooAssets.Destroy()` / exit PlayMode.	`jobId?`, `forceYooAssetsDestroy=false`, `exitPlayMode=false`

Collector configuration (13)

Skill	Purpose	Key Parameters
`yooasset_list_collector_packages`	List Packages → Groups → Collectors tree. `verbose=true` returns the full descent.	`verbose=false`
`yooasset_list_collector_rules`	Return registered Active / Address / Pack / Filter / Ignore rule classes.	`ruleKind="all"` (or `activeRule
`yooasset_create_collector_package`	Create a new Collector Package. Fails on duplicate unless `allowDuplicate=true`.	`packageName`, `allowDuplicate=false`
`yooasset_create_collector_group`	Create a Group inside an existing Package.	`packageName`, `groupName`, `groupDesc=""`, `activeRule="EnableGroup"`, `assetTags=""`
`yooasset_add_collector`	Add an `AssetBundleCollector` to a Group. Validates `collectPath` via AssetDatabase and each rule via its registered class name.	`packageName`, `groupName`, `collectPath`, `collectorType="MainAssetCollector"`, `addressRule="AddressByFileName"`, `packRule="PackDirectory"`, `filterRule="CollectAll"`, `assetTags=""`, `userData=""`
`yooasset_save_collector_config`	Persist the `AssetBundleCollectorSetting.asset`. Optionally run `FixFile()` to repair dangling rule references.	`fixErrors=true`
`yooasset_modify_collector_settings`	Modify global Collector settings.	`showPackageView=false`, `uniqueBundleName=false`, `save=true`
`yooasset_modify_collector_package`	Rename/describe a package and set package-level options.	`packageName`, `packageDesc?`, `newPackageName?`, `enableAddressable=false`, `supportExtensionless=true`, `locationToLower=false`, `includeAssetGUID=false`, `autoCollectShaders=true`, `ignoreRule="NormalIgnoreRule"`, `save=true`
`yooasset_remove_collector_package`	Remove a Collector package by name.	`packageName`, `save=true`
`yooasset_modify_collector_group`	Rename/describe a group and update active rule/tags.	`packageName`, `groupName`, `newGroupName?`, `groupDesc?`, `activeRule="EnableGroup"`, `assetTags?`, `save=true`
`yooasset_remove_collector_group`	Remove a group from a package.	`packageName`, `groupName`, `save=true`
`yooasset_modify_collector`	Modify an existing collector matched by `collectPath`.	`packageName`, `groupName`, `collectPath`, `newCollectPath?`, `collectorType="MainAssetCollector"`, `addressRule="AddressByFileName"`, `packRule="PackDirectory"`, `filterRule="CollectAll"`, `assetTags?`, `userData?`, `save=true`
`yooasset_remove_collector`	Remove a collector matched by `collectPath`.	`packageName`, `groupName`, `collectPath`, `save=true`

Show full SKILL.md (488 more words)Show less

Build report analysis (8)

Skill	Purpose	Key Parameters
`yooasset_load_build_report`	Deserialize a YooAsset BuildReport `.report` file and return `ReportSummary` metadata + top-level totals.	`reportPath`
`yooasset_list_report_bundles`	Paginated / filtered / sorted bundle listing from the report.	`reportPath`, `filterEncrypted?`, `filterTag?`, `sortBy="size"` (`size
`yooasset_get_bundle_detail`	Full `ReportBundleInfo` for a single bundle — `DependBundles`, `ReferenceBundles`, asset `BundleContents`.	`reportPath`, `bundleName`
`yooasset_list_report_assets`	Paginated / filtered / sorted asset listing from the report.	`reportPath`, `filterBundle?`, `filterTag?`, `search?`, `sortBy="path"` (`path
`yooasset_get_asset_detail`	Full `ReportAssetInfo` by asset path or address.	`reportPath`, `assetPath?`, `address?`
`yooasset_get_dependency_graph`	Compact bundle/asset dependency graph for visualization or focused analysis.	`reportPath`, `rootBundle?`, `rootAssetPath?`, `maxNodes=200`
`yooasset_compare_build_reports`	Compare two `.report` files for bundle/asset additions, removals, and size changes.	`oldReportPath`, `newReportPath`, `limit=100`
`yooasset_list_independ_assets`	Assets not referenced by any main asset — cleanup candidates.	`reportPath`, `limit=100`, `offset=0`

Quick Start

python

import unity_skills as u

# 0. Probe installation (works even if package is missing)
u.call_skill("yooasset_check_installed")
# -> { installed, packageVersion, availablePipelines: [...], editorAvailable, ... }

# 1. Configure collectors (end-to-end)
u.call_skill("yooasset_list_collector_rules", ruleKind="all")  # discover available rule class names
u.call_skill("yooasset_create_collector_package", packageName="DefaultPackage")
u.call_skill("yooasset_create_collector_group",
    packageName="DefaultPackage", groupName="UI", activeRule="EnableGroup",
    assetTags="ui")
u.call_skill("yooasset_add_collector",
    packageName="DefaultPackage", groupName="UI",
    collectPath="Assets/GameRes/UI",
    collectorType="MainAssetCollector",
    addressRule="AddressByFileName",
    packRule="PackDirectory",
    filterRule="CollectAll")
u.call_skill("yooasset_modify_collector_package",
    packageName="DefaultPackage",
    enableAddressable=True,
    supportExtensionless=True,
    locationToLower=False)
u.call_skill("yooasset_save_collector_config", fixErrors=True)

# 2. Simulate build (EditorSimulateMode) — fast, no file I/O
u.call_skill("yooasset_simulate_build", packageName="DefaultPackage")
# -> { packageRootDirectory: ".../Bundles/DefaultPackage/Simulate" }

# 3. Real build
result = u.call_skill("yooasset_build_bundles",
    packageName="DefaultPackage",
    packageVersion="1.0.0",
    pipeline="ScriptableBuildPipeline",
    compression="LZ4",
    fileNameStyle="HashName",
    verifyBuildingResult=True)

# 4. Analyze the report
import os
report_path = os.path.join(
    result["outputDirectory"],
    f"{result['packageName']}_{result['packageVersion']}.report")
u.call_skill("yooasset_load_build_report", reportPath=report_path)
u.call_skill("yooasset_list_report_bundles", reportPath=report_path, sortBy="size", limit=20)
u.call_skill("yooasset_list_report_assets", reportPath=report_path, search="UI", limit=20)
u.call_skill("yooasset_get_dependency_graph", reportPath=report_path, maxNodes=100)
u.call_skill("yooasset_list_independ_assets", reportPath=report_path)

# 5. Optional PlayMode runtime validation
job = u.call_skill("yooasset_runtime_validate_package",
    packageName="DefaultPackage",
    assetLocation="ui/example",
    restoreEditMode=True,
    cleanup=True)
u.call_skill("yooasset_runtime_get_validation_result", jobId=job["jobId"])

Critical Rules (must read)

yooasset_check_installed is the ONLY skill that works without YOO_ASSET compile define. Every other skill returns NoYooAsset() — correct the environment (install or upgrade the package, then let Unity recompile) before retrying.
Pipeline ↔ Parameters pairing is enforced. yooasset_build_bundles pipeline=ScriptableBuildPipeline uses ScriptableBuildParameters; pipeline=RawFileBuildPipeline uses RawFileBuildParameters. EditorSimulateBuildPipeline is rejected here — use yooasset_simulate_build. BuiltinBuildPipeline is legacy and explicitly rejected.
packageVersion="auto" fills DateTime.UtcNow.ToString("yyyyMMddHHmm"). Pass a semver string when you want deterministic versioning.
yooasset_add_collector validates collectPath via AssetDatabase.LoadAssetAtPath. Paths must be under Assets/...; absolute or relative ../ paths will fail.
Rule names in Create Skills are CLASS names, not display names. Use yooasset_list_collector_rules to discover valid values (e.g. EnableGroup, AddressByFileName, PackDirectory, CollectAll, NormalIgnoreRule).
Collector mutations can save immediately or be batched. Create skills mark IsDirty=true; modify/remove skills expose save=true. For bulk edits, pass save=false and finish with yooasset_save_collector_config.
yooasset_build_bundles is NOT undo-tracked (external file I/O, not scene/asset state). clearBuildCache=true re-runs the full pipeline; defaults avoid it for incremental speed.
BuildReport lives next to bundles as a .report file — YooAsset 2.3.18 writes it as <BuildOutputRoot>/<BuildTarget>/<PackageName>/<Version>/<PackageName>_<PackageVersion>.report. Do not pass BuildReport.json, <PackageName>_<PackageVersion>.json, or buildlogtep.json: the .json file is the package manifest and buildlogtep.json is the Scriptable Build Pipeline trace log. yooasset_list_report_bundles reads the .report file standalone, so you can also point it at an archived copy.
Runtime validation may enter PlayMode. yooasset_runtime_validate_package is intentionally async; poll the job result and use yooasset_runtime_cleanup if the editor is left in a state you do not want.
yooasset_list_independ_assets identifies assets not referenced by any main asset — candidates for the Collector to drop. Verify manually before removing; a main asset created later could still need them.

Version Scope

Target: YooAsset 2.3.18 (published 2025-12-04). Source anchors use this version.
Minimum: 2.3.15 (enforced by the asmdef versionDefines entry). Earlier versions use an incompatible manifest format and pre-FindAssetType IFilterRule (would not compile against this Skill module).
2.3.17 fixed a critical CRC validation bug; users on 2.3.15/2.3.16 should upgrade before relying on verifyBuildingResult=true.
Runtime-side rules (PlayMode mapping, handle lifecycle, update flow, legacy-API migration) → yooasset-design/SKILL.md.

Exact Signatures

For authoritative parameter names, defaults, and return fields, query GET /skills/schema?category=YooAsset or unity_skills.get_skill_schema(). This document is a routing / best-practice guide, not the signature source.

Files

Just SKILL.md in SkillsForUnity/unity-skills~/skills/yooasset of Besty0728/Unity-Skills.

Open the folder on GitHubat commit 15a1925

Compare with similar skills

Unity Yooasset next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Unity Yooasset compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Unity Yooasset this skillBesty0728/Unity-Skills	1.8k	—	~4.6k	Automated safety check: Pass	MIT	yesterday
Image to Three.js Modelimg2threejs/img2threejs	18k	1 repos	~8.2k	Automated safety check: Pass	Apache-2.0	yesterday
Web CloneJane-xiaoer/claude-skill-web-clone	1k	1 repos	~2.7k	Automated safety check: Pass	MIT	3 mo ago
Threejs Game Directormajidmanzarpour/threejs-game-skills	2.5k	—	~2.2k	Automated safety check: Pass	MIT	11 days ago
Game Asset Generatorhtdt/godogen	7.1k	—	~2.8k	Automated safety check: Pass	MIT	7 days ago
Threejs Gameplay Systemsvalkor-ai/loom	1.2k	1 repos	~1.4k	Automated safety check: Pass	Apache-2.0	2 days ago

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Questions about Unity Yooasset

What does Unity Yooasset do?

Automate YooAsset hot-update and asset bundles. An agent skill from Besty0728/Unity-Skills. Unity Yooasset is an agent skill from Besty0728/Unity-Skills.

When should I use Unity Yooasset?

Unity Yooasset fits situations like: game Development work in your project.

How do I install Unity Yooasset in Claude Code?

Run `npx skills add Besty0728/Unity-Skills --skill unity-yooasset -a claude-code`. Or copy the skill folder (SkillsForUnity/unity-skills~/skills/yooasset in Besty0728/Unity-Skills) into .claude/skills/unity-yooasset in your project. Claude Code loads it when a task matches its description.

How do I install Unity Yooasset in Codex?

Run `npx skills add Besty0728/Unity-Skills --skill unity-yooasset -a codex`. Or copy the skill folder (SkillsForUnity/unity-skills~/skills/yooasset in Besty0728/Unity-Skills) into .agents/skills/unity-yooasset in your project. Codex loads it when a task matches its description.

Can I use Unity Yooasset in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Besty0728/Unity-Skills --skill unity-yooasset -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/unity-yooasset, .gemini/skills/unity-yooasset, .github/skills/unity-yooasset and .opencode/skills/unity-yooasset in your project.

What does Unity Yooasset need to run?

SKILL.md names no scripts, command-line tools or credentials: Unity Yooasset is instructions for the agent only.

Does Unity Yooasset access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Unity Yooasset safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Unity Yooasset use?

Unity Yooasset is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Unity Yooasset use?

About 4.6k tokens (SKILL.md is roughly 18k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Unity Yooasset?

Skills that share tags, products or a category with Unity Yooasset: Image to Three.js Model (img2threejs/img2threejs, 18k stars), Web Clone (Jane-xiaoer/claude-skill-web-clone, 1k stars), Threejs Game Director (majidmanzarpour/threejs-game-skills, 2.5k stars) and Game Asset Generator (htdt/godogen, 7.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Unity Yooasset?

Besty0728 (a GitHub user) maintains it in Besty0728/Unity-Skills, which has 1,819 GitHub stars. The repository holds 82 skills in this directory. The repository was last updated on October 8, 2026.

Source: Besty0728/Unity-Skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Unity Yooasset

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Triggers

Unity YooAsset Skills

Guardrails

Skills

Environment (1)

Build pipeline (7)

YooAsset tools (8)

Runtime validation (3)

Collector configuration (13)

Build report analysis (8)

Quick Start

Critical Rules (must read)

Version Scope

Exact Signatures

Files

Compare with similar skills

Similar skills

More from Besty0728/Unity-Skills

Related

Questions about Unity Yooasset