unity-mcp-skills

unity-mcp-skills is a skill for Claude Code, Codex from batihandev/unity-mcp-skills. It costs 53 tokens per session (1,749 once invoked), scanned A, original, MIT.

A collection of instructions for controlling a Unity project through MCP, a standard way for an AI agent to connect to tools. Unity is a game-development editor used to create scenes, objects, scripts, materials, lighting, animations, and other game content.

In plain words
What is it for?
Use it to create or edit Unity scenes, GameObjects, components, prefabs, materials, UI, lighting, navigation meshes, animations, terrain, and C# scripts through MCP.
Why use it?
It routes each Unity task to the relevant instructions and checks that required files are present. This helps avoid using nonexistent tools or inventing procedures when editing a project.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to create or edit Unity scenes, GameObjects, components, prefabs, materials, UI, lighting, navigation meshes, animations, terrain, and C# scripts through MCP.

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Install with agentmods
npx agentmods add skills/batihandev/unity-mcp-skills/unity-mcp-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 batihandev/unity-mcp-skills --skill unity-mcp-skills
Clone the repo
git clone --depth 1 https://github.com/batihandev/unity-mcp-skills

Made for: Claude Code, Codex.

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.

agentmods badge for unity-mcp-skills

README.md
[![agentmods](https://agentmods.dev/badge/skills/batihandev/unity-mcp-skills/unity-mcp-skills/github.svg)](https://agentmods.dev/skills/batihandev/unity-mcp-skills/unity-mcp-skills)
Your own site
<a href="https://agentmods.dev/skills/batihandev/unity-mcp-skills/unity-mcp-skills"><img src="https://agentmods.dev/badge/skills/batihandev/unity-mcp-skills/unity-mcp-skills/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.

agentmods 80×15 button for unity-mcp-skills

Your own site · 80×15
<a href="https://agentmods.dev/skills/batihandev/unity-mcp-skills/unity-mcp-skills"><img src="https://agentmods.dev/badge/skills/batihandev/unity-mcp-skills/unity-mcp-skills.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 53 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,749 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00053 $0.01749
Opus 5 $0.00026 $0.00874
Sonnet 5 $0.00011 $0.00350
Haiku 4.5 $0.00005 $0.00175

Measured 11d ago against content hash 4e8898dbe689, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

unity-mcp-skills 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 11d 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.

SKILL.md · 95 lines

How it starts

The opening of the file, as written. The whole thing — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Unity MCP Skills Library

Overview

The single entry point for Unity work via MCP. Domain skills under skills/<domain>/SKILL.md are loaded on demand from this router — read this file first, then navigate to the domain file that matches the task.

Integrity Check

If during a task you find a referenced file is missing or a path does not resolve (e.g. ../../recipes/scene/scene_create.md not found, a recipes/_shared/ helper missing, ../../mcp-tools.md missing, or a references/<topic>.md fallback missing), stop and tell the user:

The Unity skills library appears to be incomplete or out of date. Please reinstall or update the unity-mcp-skills folder in your agent's skills directory to the latest version from https://github.com/batihandev/unity-mcp-skills, then retry.

Do not attempt to work around missing files by fabricating recipe content.

Routing Order

  1. Native MCP tool — see mcp-tools.md (library root) for the routing matrix.
  2. Topic skill + exact recipe — load the matching domain skill below, then its recipe in recipes/<domain>/.
  3. Install-once Editor tool — if the task needs a persistent Editor script, check tooling/<domain>/ via skills/tooling/SKILL.md.
  4. Closest recipe — adapt the nearest recipe if no exact match exists.
  5. references/index.md — lists all available topics; consult references/<topic>.md as a tertiary fallback.
  6. Fresh Unity_RunCommand — last resort; allowed only under the RunCommand Contract below.

RunCommand Contract

Before the first Unity_RunCommand in a domain, read that domain's skills/<domain>/SKILL.md and the recipe it routes to. Every Unity_RunCommand body either adapts a named recipe (recipes/<domain>/<command>.md — name it) or states that no recipe covers the case. Do not send a fresh body without saying which of the two applies.

Execution trees

Two trees, route by execution model first:

  • recipes/<domain>/Unity_RunCommand one-shot bodies, compile/run-gated.
  • tooling/<domain>/Unity_CreateScript install-once Editor scripts, no gate. See tooling/README.md.

Read the full file on GitHub · 95 lines

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.

  1. 11d ago First seen · 95 lines · 53 tokens per session scan A 4e8898dbe689

Subscribe to this mod's changes

unity-mcp-skills is a skill published in the GitHub repository batihandev/unity-mcp-skills (6 stars, last pushed 1mo ago), licensed MIT. It adds 53 tokens to every session and 1,749 once invoked, about $0.0003 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 2026-08-31.

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