A guide for connecting Claude Code to the Unity Editor, a desktop application for building games and other interactive 3D software. It covers the Unity command line, a pipeline package, and an MCP bridge.

Rebuilding scenes, measuring Play mode, taking screenshots, reading the console, running tests, and fixing the connection between Unity and Claude Code.

It provides setup and troubleshooting information for controlling Unity from Claude Code.

unity-mcp — Skill for Claude Code and Codex by Borneon

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 Borneon/UnityCli-Claude-Skills --skill unity-mcp

Clone the repo

git clone --depth 1 https://github.com/Borneon/UnityCli-Claude-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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/borneon/unitycli-claude-skills/unity-mcp/github.svg)](https://agentmods.dev/skills/borneon/unitycli-claude-skills/unity-mcp)

Your own site

<a href="https://agentmods.dev/skills/borneon/unitycli-claude-skills/unity-mcp"><img src="https://agentmods.dev/badge/skills/borneon/unitycli-claude-skills/unity-mcp/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/borneon/unitycli-claude-skills/unity-mcp"><img src="https://agentmods.dev/badge/skills/borneon/unitycli-claude-skills/unity-mcp.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 160 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,777 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.

Origin unknown 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	$0.00160	$0.02777
Opus 5.5	$0.00064	$0.01111
Sonnet 5.5	$0.00032	$0.00555
Haiku 4.5	$0.00016	$0.00278

Measured 2mo ago against content hash 093bef55c321, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

unity-mcp scanned grade A with 1 finding 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 2mo 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s -o /dev/null -w "%{http_code}\n" http://127.0.0.1:7800/

unity-mcp/SKILL.md · 229 lines

The source is not reproduced here

No licence file

Read it on GitHub

Files

What ships with it

1 file 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.

references/sorun-giderme.md 4.7 KB

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.

2mo ago First seen · 229 lines · 160 tokens per session scan A 093bef55c321

Subscribe to this mod's changes

unity-mcp is a skill published in the GitHub repository Borneon/UnityCli-Claude-Skills (8 stars, last pushed 3mo ago), with no licence file. It adds 160 tokens to every session and 2,777 once invoked, about $0.0006 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Game development

unity-mcp next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
unity-mcpBorneon/UnityCli-Claude-Skills	Skill	8	3mo ago	none	A	160	Claude Code, Codex
playtest-reportDonchitos/Claude-Code-Game-Studios	Skill	36k	19d ago	MIT	A	20	Claude Code
godot-signals-groupsgamedev-skills/awesome-gamedev-agent-skills	Skill	6.9k	10d ago	Apache-2.0	A	95	Claude Code
scenario-unreal-gameplayscenario-labs/skills	Skill	3.2k	yesterday	MIT	A	121	Claude Code
motionOpenDCAI/GameFactory-3A	Skill	1.0k	8d ago	Apache-2.0	A	0	Claude Code, Codex
unity-addressablesBesty0728/Unity-Skills	Skill	1.9k	yesterday	MIT	A	25	Claude Code, Codex
unity-manual-componentBesty0728/Unity-Skills	Skill	1.9k	yesterday	MIT	A	36	Claude Code, Codex

unity-mcp

Getting it into your agent

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Makes network callslowCapability

The source is not reproduced here

No licence file

What ships with it

What this file has done since we first saw it

unity-mcp compared with skills from other repositories