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.
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.
npx skills add IvanMurzak/Unity-MCP --skill package-searchgit 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/package-search)<a href="https://agentmods.dev/skills/ivanmurzak/unity-mcp/package-search"><img src="https://agentmods.dev/badge/skills/ivanmurzak/unity-mcp/package-search/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/package-search"><img src="https://agentmods.dev/badge/skills/ivanmurzak/unity-mcp/package-search.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium MCP Rug Pull · line 45 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00048 | $0.01127 |
| Opus 5.5 | $0.00019 | $0.00451 |
| Sonnet 5.5 | $0.00010 | $0.00225 |
| Haiku 4.5 | $0.00005 | $0.00113 |
Grade A, and why
package-search 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 5d 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.
How it starts
The opening of the file, as written. The whole thing — 150 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Package Manager / Search
Search for packages in both Unity Package Manager registry and installed packages. Use this to find packages by name before installing them. Returns available versions and installation status. Searches both the Unity registry and locally installed packages (including Git, local, and embedded sources). Results are prioritized: exact name match, exact display name match, name substring, display name substring, description substring. Note: Online mode fetches exact matches from live registry, then supplements with cached substring matches.
Inputs
query— package id, name, display name, or description keyword (case-insensitive). Required.maxResults(default 10) — caps the returned list.offlineMode(defaulttrue) — whenfalse, hits the live registry for exact matches; cached registry data still backs the substring matches in both modes.
Result composition
Each entry includes name, display name, latest version, truncated description, install status, installed version (if any), and the top-5 compatible versions.
How to Call
unity-mcp-cli run-tool package-search --input '{
"query": "string_value",
"maxResults": 0,
"offlineMode": false
}'
For complex input (multi-line strings, code), save the JSON to a file and use:
unity-mcp-cli run-tool package-search --input-file args.jsonOr pipe via stdin (recommended):
unity-mcp-cli run-tool package-search --input-file - <<'EOF' {"param": "value"} EOF
Troubleshooting
If unity-mcp-cli is not found, either install it globally (npm install -g unity-mcp-cli) or use npx unity-mcp-cli instead.
Read the /unity-initial-setup skill for detailed installation instructions.
Input
| Name | Type | Required | Description |
|---|---|---|---|
query |
string |
Yes | The package id, name, or description. Can be: Full package id 'com.unity.textmeshpro', Full package name 'TextMesh Pro', Partial name 'TextMesh' (will search in Unity registry and installed packages), Description keyword 'rendering' (searches in package descriptions). |
maxResults |
integer |
No | Maximum number of results to return. Default: 10 |
offlineMode |
boolean |
No | Whether to perform the search in offline mode (uses cached registry data only). Default: true. Set to false to fetch latest exact matches from Unity registry. |
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.
- 5d ago Changed · +2 lines fd9c96b1a0ca
- 1mo ago First seen · 148 lines · 48 tokens per session scan A 76c992d82f82
package-search is a skill published in the GitHub repository IvanMurzak/Unity-MCP (4,509 stars, last pushed yesterday), licensed Apache-2.0. It adds 48 tokens to every session and 1,127 once invoked, about $0.0002 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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unity-csharp-standards
Apply Unity-specific C# standards that preserve readability, testability, and safe engine integration.
unity-editor-tooling
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unity-gameplay-patterns
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unity-performance
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