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Unity-MCP
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Unity-MCP

Active·★ 4.5k·Apache-2.0·Updated 2026-10-27
★ Essential★ Trending

Unity MCP, branded AI Game Developer, is an AI-powered game development assistant for both the Unity Editor and runtime. It connects Claude, Cursor, Windsurf and other MCP clients to Unity. The README's distinguishing claim is that the plugin works inside your compiled game, so you can use LLMs at runtime for dynamic NPC behaviour or real-time debugging as well as in the editor.

Features listed are runtime AI, natural conversation, code assistance including running tests, debug support (get logs and fix errors), multiple LLM providers (Anthropic, OpenAI, DeepSeek, Microsoft and others), local (stdio) and remote (HTTP) operation, a rich default tool set and the ability to add custom MCP tools in your own project code. The tool list shown is grouped by area, starting with assets: copy, create-folder, delete, find, get-data, modify, move and refresh, plus asset sub-groups such as materials. Setup is three steps: install the Unity MCP plugin (with an installer or OpenUPM-CLI), install an MCP client, and configure the client. A stability table shows editmode test status for Unity 2022.3, 2023.2 and 6000.3. It is Apache-2.0 licensed.

This write-up is based on the project's README and public repository data. We have not hand-tested the tool. Data as of 2026-10-25.

License
Apache-2.0
Latest release
1.5.0 · 2026-10-24
Last commit
2026-10-24
Contributors
31
Forks
404
Open issues and PRs
57
First published
2025-04-02

Source: GitHub, npm and PyPI public APIs.

#Unity#AI#Game Development#LLM#MCP#Coding#Image Generation#Communication
$ Install
$ openupm add com.ivanmurzak.unity.mcp
↗ Visit site★ GitHub
01

Features

01Runtime AI: Use LLMs directly inside compiled games
02Natural conversation: Chat with AI like a human
03Code assistance: Ask AI to write and test code
04Debug support: AI assistance for logs and error fixing
05Multiple LLM providers: Connect to Anthropic, OpenAI, DeepSeek, Microsoft, and others
02

Why choose it

+Works in the editor and, uniquely according to the README, inside a compiled game for runtime AI and debugging.
+Rich default tool set (assets, materials and more) and support for adding custom MCP tools in project code.
+Works with several LLM providers and clients, locally over stdio or remotely over HTTP.
+Stability table shows tests for Unity 2022.3, 2023.2 and 6000.3; Apache-2.0 licensed.
03

Trade-offs

!Runtime AI inside a shipped game means connecting your game to an LLM provider, which brings cost, latency and privacy considerations.
!It is tested on specific Unity versions (2022.3, 2023.2, 6000.3), so other versions may not work.
!A plugin plus an MCP client plus client configuration makes setup a three-step process, and the README is long (about 30,000 characters).
04

Maintenance check

ActiveChecked: 2026-10-26
Last commit
2026-10-26
Commits, last 90 days
100+
Releases, last 90 days
30
Latest release
1.5.0 (2026-10-24)
Open issues
55
Recent issues with at least one comment
1/6
Commits per week, last 12 weeks
Commits per week, last 12 weeks: 2, 8, 3, 3, 1, 19, 25, 2, 2, 26, 50, 13

Oldest week on the left; the latest four weeks are orange. Source: GitHub commit activity.

Status rule: archived on GitHub = Archived; last commit within 90 days = Active; 91 to 365 days = Slowing; older = Stale. All figures come from the GitHub API on the date shown.

Most discussed open issues

  • #501 Configure `Codex` extension in VS Code8 comments · 2026-02-26
  • #600 Stuck connection status.6 comments · 2026-03-25
  • #711 Error reading from async stream, we will reconnect: TypeError: terminated5 comments · 2026-05-01
  • #448 VS Code (Copilot) - Sorry, no response was returned.4 comments · 2026-02-09
  • #840 tests-run tool causes Unity Editor deadlock in v0.81.12 comments · 2026-06-20

Issue titles are quoted from GitHub. Open the link to check whether a problem still applies to the version you use.

05

Compatibility

Unity
Native
Verified via docs
Claude Code
Supported
Verified via docs
Claude Desktop
Supported
Verified via docs
GitHub Copilot in VS Code
Supported
Verified via docs
Antigravity (Gemini CLI)
Supported
Verified via docs
Cursor
Supported
Verified via docs
06

Quick start

1
$ openupm add com.ivanmurzak.unity.mcp
07

Use cases

↳Automating game development workflows in Unity Editor
↳AI-powered code generation and testing for game logic
↳Enabling dynamic NPC behavior and player-AI interaction in compiled games
08

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On this page
01Features02Why choose it03Trade-offs04Maintenance check05Compatibility06Quick start07Use cases08Alternatives
IvanMurzak /
Unity-MCP
↗

Unity MCP plugin for editor control and AI that runs inside your built game

4.5k404Apache-2.0
Last commit1d ago
StatusActive
CategoryDev Tooling
Contributors31
Latest release1.5.0
Links
Documentation↗Discussion↗Issues↗Releases↗
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