Unity-MCP connects AI coding agents to the Unity game engine through MCP, letting them work with the Unity Editor and running games. It is used by game developers to generate code, automate development and testing, debug projects, and add AI-driven behavior to games. The catalogue entries provide skills, instructions, an MCP integration, and settings for operating this workflow.
Borrowing it
Nothing to install: this file belongs to IvanMurzak/Unity-MCP. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/IvanMurzak/Unity-MCP/main/.claude/skills/build-cli/SKILL.mdgit clone --depth 1 https://github.com/IvanMurzak/Unity-MCPWrote 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.
[](https://agentmods.dev/skills/ivanmurzak/unity-mcp/build-cli)<a href="https://agentmods.dev/skills/ivanmurzak/unity-mcp/build-cli"><img src="https://agentmods.dev/badge/skills/ivanmurzak/unity-mcp/build-cli/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.
<a href="https://agentmods.dev/skills/ivanmurzak/unity-mcp/build-cli"><img src="https://agentmods.dev/badge/skills/ivanmurzak/unity-mcp/build-cli.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00021 | $0.00268 |
| Opus 5.5 | $0.00008 | $0.00107 |
| Sonnet 5.5 | $0.00004 | $0.00054 |
| Haiku 4.5 | $0.00002 | $0.00027 |
Grade A, and why
build-cli 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.
What it actually says
Build CLI
Build the unity-mcp-cli TypeScript project and optionally link it globally.
Step 1 — Install Dependencies
cd cli && npm install
Only needed if node_modules/ is missing or package.json changed.
Step 2 — Build TypeScript
cd cli && npm run build
This compiles src/**/*.ts → dist/**/*.js via tsc.
Step 3 — Link Globally (if $ARGUMENTS contains --link or first time)
cd cli && npm link
This creates a global symlink so unity-mcp-cli is available from any terminal. Only needed once — after that, npm run build alone is sufficient.
Step 4 — Verify
unity-mcp-cli --version
Confirm the CLI is accessible and shows the expected version.
Report
Print the version and confirm success. If any step failed, show the error output.
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 First seen · 47 lines · 21 tokens per session scan A 473f6527c716
build-cli is a skill published in the GitHub repository IvanMurzak/Unity-MCP (4,515 stars, last pushed today), licensed Apache-2.0. It adds 21 tokens to every session and 268 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 2026-08-30.
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