A Unity Engine support skill for automating the Unity Editor and game runtime with C# scripts. Unity is a tool for building 2D and 3D games and interactive applications.

Use it for Unity editor tools, runtime scripts, Addressables content pipelines, rendering setups, and command-line or continuous-integration builds.

It helps with repetitive editor work, content management, troubleshooting, and automated builds across desktop, mobile, console, and WebGL projects.

unity — Skill for Claude Code by alivirgo/Major-AI-Skills

Install

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.

Any agent

npx skills add alivirgo/Major-AI-Skills --skill unity

Clone the repo

git clone --depth 1 https://github.com/alivirgo/Major-AI-Skills

Made for: Claude Code.

Or install mas-3d-games, the plugin that ships this one along with the rest of its 8 skills.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/alivirgo/major-ai-skills/unity/github.svg)](https://agentmods.dev/skills/alivirgo/major-ai-skills/unity)

Your own site

<a href="https://agentmods.dev/skills/alivirgo/major-ai-skills/unity"><img src="https://agentmods.dev/badge/skills/alivirgo/major-ai-skills/unity/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/alivirgo/major-ai-skills/unity"><img src="https://agentmods.dev/badge/skills/alivirgo/major-ai-skills/unity.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 22 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,174 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00022	$0.01174
Opus 5.5	$0.00009	$0.00470
Sonnet 5.5	$0.00004	$0.00235
Haiku 4.5	$0.00002	$0.00117

Measured 1mo ago against content hash 562e17d6d4d8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

unity 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 1mo 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.

plugins/mas-3d-games/skills/unity/SKILL.md · 120 lines

How it starts

The opening of the file, as written. The whole thing — 120 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Unity Engine C# Editor & Runtime AI Skill Guide (Claude)

Overview & Engine Architecture

Unity 6000.x / 2022 LTS+ combines Scenes, Prefabs, ScriptableObjects, URP/HDRP/Built-in RP, and Editor-only automation via -batchmode -quit -executeMethod. Claude acts as a Principal Unity Engineer: CI builds, Addressables, deterministic player settings, and Editor/runtime assembly separation.

┌─────────────────────────────────────────────────────────────┐
│  Editor (UnityEditor)  →  -executeMethod / BuildPipeline    │
│  Player (runtime)      →  Mono / IL2CPP                     │
│  CI: one process per buildTarget; -activeBuildProfile       │
└─────────────────────────────────────────────────────────────┘

Version pin: Unity Editor version in ProjectSettings/ProjectVersion.txt — CI must use the same Hub editor (e.g. 6000.0.xf1). Command-line reference.

When to use / when not to

Use when: automated builds, asset validation, playmode tests, Addressables content builds, batch import settings.

Do not use when: Unreal-specific Nanite workflows; server-side Unity without licensing review for headless batch (Unity licensing applies to build machines).

Operational Capabilities & Agent Directives

Editor isolation: #if UNITY_EDITOR, Assets/**/Editor/, Editor asmdefs — never reference UnityEditor in runtime.
CI entry points: public static void X() only; EditorApplication.Exit(code) on failure; no modal dialogs in batchmode.
One target per invocation: pass -buildTarget StandaloneWindows64 or -activeBuildProfile "Assets/.../Windows.asset" — multi-target requires separate processes.
Deterministic builds: pin graphics tiers, disable random Application.targetFrameRate side effects in build scripts; use BuildOptions.StrictMode where available; log Application.unityVersion.
Color/URP: document active RP asset; linear color space + URP asset must match CI player settings or lighting differs from Editor.
Logs: always -logFile path; parse for Scripts have compiler errors before blaming runtime.

Read the full file on GitHub · 120 lines

Files

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.

Changes

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.

1mo ago Changed · -26 lines 562e17d6d4d8
1mo ago Changed · -12 tokens per session 8addf5e22450
2mo ago First seen · 146 lines · 34 tokens per session scan A 8d8e337fe631

Subscribe to this mod's changes

unity is a skill published in the GitHub repository alivirgo/Major-AI-Skills (2 stars, last pushed yesterday), licensed MIT. It adds 22 tokens to every session and 1,174 once invoked, about $0.0001 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 2026-08-31.

C# and .NET Game development addressables agent-skills agentic-skills ai-agent-skills ai-agents batchmode editor-scripting game-engines headless unity urp

unity next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
unityalivirgo/Major-AI-Skills	Skill	2	yesterday	MIT	A	22	Claude Code
aspid-visual-element-fluentVPDPersonal/Aspid.FastTools	Skill	24	yesterday	MIT	A	109	Claude Code, Codex
aspid-serializable-typeVPDPersonal/Aspid.FastTools	Skill	24	yesterday	MIT	A	136	Claude Code, Codex
aspid-enum-valuesVPDPersonal/Aspid.FastTools	Skill	24	yesterday	MIT	A	87	Claude Code, Codex
aspid-profiler-markerVPDPersonal/Aspid.FastTools	Skill	24	yesterday	MIT	A	82	Claude Code, Codex
asp-ft-player-buildsVPDPersonal/Aspid.FastTools	Skill	24	yesterday	MIT	A	99	Claude Code
test-designing-guidenowsprinting/unity-coding-skills	Skill	20	8d ago	Unlicense	A	52	Claude Code