Image to Three.js Model
img2threejs/img2threejs
Rebuilds the object in a reference image as a procedural, animation-ready Three.js model written entirely in code, using staged sculpting with quality checks.
“Advise on Unity performance red flags”
Install Unity Performance
$ npx skills add Besty0728/Unity-Skills --skill unity-performance -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Besty0728/Unity-Skills unity-performance --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ 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/performance' .claude/skills/unity-performance && rm -rf skills-srcUse ~/.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/
Install the "unity-performance" agent skill from https://github.com/Besty0728/Unity-Skills/tree/main/SkillsForUnity/unity-skills~/skills/performance into .claude/skills/unity-performance/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unity-performance", 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 install https://github.com/Besty0728/Unity-Skills/tree/main/SkillsForUnity/unity-skills~/skills/performanceType 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.
$ npx skills add Besty0728/Unity-Skills --skill unity-performance -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Besty0728/Unity-Skills unity-performance --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ 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/performance' .agents/skills/unity-performance && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "unity-performance" agent skill from https://github.com/Besty0728/Unity-Skills/tree/main/SkillsForUnity/unity-skills~/skills/performance into .agents/skills/unity-performance/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unity-performance", 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.
$ npx skills add Besty0728/Unity-Skills --skill unity-performance -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Besty0728/Unity-Skills unity-performance --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ 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/performance' .cursor/skills/unity-performance && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "unity-performance" agent skill from https://github.com/Besty0728/Unity-Skills/tree/main/SkillsForUnity/unity-skills~/skills/performance into .cursor/skills/unity-performance/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unity-performance", 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 https://github.com/Besty0728/Unity-Skills.git --path 'SkillsForUnity/unity-skills~/skills/performance'--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add Besty0728/Unity-Skills --skill unity-performance -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Besty0728/Unity-Skills unity-performance --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ 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/performance' .gemini/skills/unity-performance && rm -rf skills-srcUse ~/.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/
Install the "unity-performance" agent skill from https://github.com/Besty0728/Unity-Skills/tree/main/SkillsForUnity/unity-skills~/skills/performance into .gemini/skills/unity-performance/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unity-performance", 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.
$ gh skill install Besty0728/Unity-Skills unity-performanceInstalls 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).
$ npx skills add Besty0728/Unity-Skills --skill unity-performance -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ 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/performance' .github/skills/unity-performance && rm -rf skills-srcUse ~/.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/
Install the "unity-performance" agent skill from https://github.com/Besty0728/Unity-Skills/tree/main/SkillsForUnity/unity-skills~/skills/performance into .github/skills/unity-performance/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unity-performance", 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.
$ npx skills add Besty0728/Unity-Skills --skill unity-performance -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Besty0728/Unity-Skills unity-performance --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ 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/performance' .opencode/skills/unity-performance && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "unity-performance" agent skill from https://github.com/Besty0728/Unity-Skills/tree/main/SkillsForUnity/unity-skills~/skills/performance into .opencode/skills/unity-performance/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "unity-performance", 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-performance- GitHub stars
- 1.8k
- Token cost
- ~1k tokens
- SKILL.md length
- 462 words
- Files
- 1
- Skills in repo
- 82
- Repo updated
- First seen
- Licence
- MIT
At a glance
- SKILL.md covers Triggers, Check For, Hidden Costs: Possibility ≠… and Output Format, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
About this skill
Unity Performance is a skill in Besty0728/Unity-Skills (1.8k stars). Its SKILL.md is about 1k tokens. Licence: MIT.
What it can do on your machine
Read from SKILL.md and the folder at commit ec8aa7c. 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 csharp).
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 Performance loads about 1k tokens when it runs. Until then it costs about 14 tokens; SKILL.md has 462 words of instructions outside code blocks.
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 ec8aa7c, republished under its MIT licence (© Besty0728). 462 words, ~1,024 tokens.
Download SKILL.mdSave it as
.claude/skills/unity-performance/SKILL.md (or your agent's skills folder).- name
- unity-performance
- description
- Advise on Unity performance red flags
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
- Reviewing performance
- Diagnosing frame drops
- Reducing allocations
- Planning pooling/optimization
- 做性能审查、诊断掉帧或卡顿、减少内存分配、规划对象池/优化
Unity Performance Red Flags
Use this skill for a high-signal review of likely Unity performance issues. Focus on red flags, not speculative micro-optimizations.
Check For
- Too many unrelated
Update/LateUpdate/FixedUpdateloops - Repeated
Find,GetComponent,Camera.main, or tag lookups in hot paths - Frequent
Instantiate/Destroysuitable for pooling - Avoidable per-frame allocations:
- LINQ
- string formatting
- closures
- boxing
- Reflection in runtime hot paths
- Expensive editor-only helpers leaking into runtime code
- Physics, animation, or UI updates happening at the wrong cadence
Hidden Costs: Possibility ≠ Actuality
Three counter-intuitive traps where what seems "free" is actually expensive. Each cost is paid for possibility of work, not for work actually performed — which is why profilers rarely catch them directly.
Write permission costs, even without writing
A component whose Update can mutate transform.position pays the cost whether the branch runs or not: dirty-flag and serialization systems treat write permission as a reason to poll every frame. Similarly, a [SerializeField] field that is never modified at runtime still sits on the serialization path. The fix is to remove the permission, not tighten the branch — split the rarely-needed writer into its own component and AddComponent only when needed. Source: NetcodeSamples/HelloNetcode/2_Intermediate/07_Optimization/Optimization.md — "a system with the possibility of writing to a component, regardless of whether it writes to it or not, will always have to be serialized".
Show full SKILL.md (185 more words)Show less
Sequential seeds produce correlated random streams
Seeding N RNG instances with baseSeed + i gives N similar streams — patrol paths line up, spawn jitter clumps, loot rolls cluster. Hash the index before seeding:
// Wrong — N correlated streams
for (int i = 0; i < N; i++) rngs[i] = new System.Random(baseSeed + i);
// Correct — hash decorrelates adjacent seeds
for (int i = 0; i < N; i++)
rngs[i] = new System.Random((int)((uint)baseSeed * 2654435761u ^ (uint)i));Unity.Mathematics.Random.CreateFromIndex(i) applies this internally and is preferred when the math package is available. Source: Dots101/Entities101/Assets/HelloCube/3. Prefabs/SpawnSystem.cs:37-39 and its comment.
Logging fires in release builds by default
Debug.Log is not stripped in Player builds; only methods marked [Conditional("UNITY_EDITOR")] (such as Debug.DrawLine) have their arguments elided at the call site. That means a log line with interpolation or helper calls runs every frame in shipped games:
// Wrong — GetPlayerInfo() and string interpolation execute in release
Debug.Log($"Player {GetPlayerInfo()} at {Time.time}");
// Better — guard the whole expression
if (Debug.isDebugBuild) Debug.Log($"Player {GetPlayerInfo()} at {Time.time}");The same principle as the "possibility write" rule above — the runtime pays for the possibility of work, not only for the work.
Output Format
- Confirmed red flags
- Likely red flags
- Changes worth doing now
- Changes not worth doing now
- Expected gain category: clarity / frame time / GC / scalability
Guardrails
Mode: Documentation only — no REST skills to gate; load freely under any operating mode (Approval / Auto / Bypass).
- Do not recommend large refactors without a meaningful hotspot.
- Do not replace simple code with unreadable “optimized” code unless the hot path is real.
© Besty0728, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in SkillsForUnity/unity-skills~/skills/performance of Besty0728/Unity-Skills.
Open the folder on GitHubat commit ec8aa7c
Compare with similar skills
Unity Performance 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Unity Performance this skillBesty0728/Unity-Skills | 1.8k | — | ~1k | Automated safety check: Pass | MIT | |
| Image to Three.js Modelimg2threejs/img2threejs | 18k | 1 repos | ~8.2k | Automated safety check: Pass | Apache-2.0 | |
| Web CloneJane-xiaoer/claude-skill-web-clone | 1k | 2 repos | ~2.7k | Automated safety check: Pass | MIT | |
| Threejs Game Directormajidmanzarpour/threejs-game-skills | 2.4k | — | ~2.2k | Automated safety check: Pass | MIT | |
| Game Asset Generatorhtdt/godogen | 7.1k | — | ~2.8k | Automated safety check: Pass | MIT | |
| Threejs Gameplay Systemsvalkor-ai/loom | 1.2k | 1 repos | ~1.4k | Automated safety check: Pass | Apache-2.0 |
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Related
Categories
Questions about Unity Performance
How do I install Unity Performance in Claude Code?
Run `npx skills add Besty0728/Unity-Skills --skill unity-performance -a claude-code`. Or copy the skill folder (SkillsForUnity/unity-skills~/skills/performance in Besty0728/Unity-Skills) into .claude/skills/unity-performance in your project. Claude Code loads it when a task matches its description.
How do I install Unity Performance in Codex?
Run `npx skills add Besty0728/Unity-Skills --skill unity-performance -a codex`. Or copy the skill folder (SkillsForUnity/unity-skills~/skills/performance in Besty0728/Unity-Skills) into .agents/skills/unity-performance in your project. Codex loads it when a task matches its description.
Can I use Unity Performance 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-performance -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-performance, .gemini/skills/unity-performance, .github/skills/unity-performance and .opencode/skills/unity-performance in your project.
What does Unity Performance need to run?
SKILL.md names no scripts, command-line tools or credentials: Unity Performance is instructions for the agent only.
Does Unity Performance 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 Performance 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 Performance use?
Unity Performance 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 Performance use?
About 1k tokens (SKILL.md is roughly 4.1k 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 Performance?
Skills that share tags, products or a category with Unity Performance: 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, 2.4k 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 Performance?
Besty0728 (a GitHub user) maintains it in Besty0728/Unity-Skills, which has 1,815 GitHub stars. The repository holds 82 skills in this directory. The repository was last updated on October 7, 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.