Let your AI agent work inside the Unity Editor. One-click install of the open-source MCP bridge, a 16-page in-editor manual, update checks. Any MCP client. Free.💬 Join the AnkleBreaker Community! 💬Got a question, feedback, or a feature you'd love to see? Join our Discord, we actively improve our assets based on your input, it's where we drop our latest announcements and run giveaways.👥 Discord: 👉 https://discord.gg/2D36VUmsYN🌐 Website: 👉https://anklebreaker-consulting.comYour AI assistant now works inside the Unity Editor.Stop describing your scene to an AI. Let it look for itself — and do the work for you.Install it in one click, connect the AI agent you already use, and just ask. It opens your prefabs, wires your components, fixes your materials, runs your builds and reads the errors back to you, right in the project you have open.JUST ASK — IT HAPPENS IN UNITY✔ "Add a health bar to the Player prefab"✔ "Why is this material pink?"✔ "Rename every enemy in this scene"✔ "Build for Windows and read me the errors"✔ "Which prefabs have missing script references?"No new tool to learn, no script to write. You say what you want, it happens.IT REACHES THE WHOLE EDITORScenes and hierarchy, GameObjects and components, prefabs, materials and shaders, assets and packages, play mode, tests, builds, the console — and more.WORKS WITH THE AI AGENT YOU ALREADY USEClaude Desktop, Claude Code, Cursor, Codex, Kimi... and any other AI assistant that speaks MCP. One short setup, walked through step by step inside Unity.UP AND RUNNING IN FIVE MINUTES✔ One click to install — nothing to download by hand, nothing to configure✔ A Welcome window that walks you through the setup and ticks off each step as you go✔ A complete manual inside the editor, searchable, with buttons that do what they describe✔ A quiet notice when a new version ships — never a popup in your faceYOURS, AND PRIVATEEverything runs on your own machine. No account, no cloud, no telemetry. And every action your assistant takes is listed, so you always know what changed.FREE, AND OPEN SOURCEThe asset is free. The plugin it installs is free and open source. Nothing is added to your game build.We also offer other quality & productivity tools for Minimaps, Cinematic Cameras, Manager Initialization, Radial Menus, and more.SUPPORTED VERSIONS▸ Unity 6000.0 and newer — officially supported and maintained. That is the version line we develop against, test on, and fix.▸ Earlier versions are outside our scope. The plugin declares 2021.3.18f1 as its floor and the asset does run on 2022.3 LTS today, but those versions are not part of our official target: we make no commitment to keep them working, and version-specific issues there are not prioritised.▸ Windows, macOS and Linux editors alike.REQUIREMENTS▸ git on the PATH. Unity installs git packages with the git command line client, so without it the one-click install fails with an explanation rather than a silent no-op. Package Manager only reads the PATH at editor startup — install git first, then restart Unity.▸ Node.js 18 or newer for the MCP server, the process your AI client launches. Nothing to clone: npx -y anklebreaker-unity-mcp@latest▸ An MCP-capable AI client. No account with us, no subscription, no key.WHAT GETS INSTALLEDThis asset does not vendor the plugin. It adds com.anklebreaker.unity-mcp through Package Manager, pinned to a published tag, so you can see, audit, update and remove it like any other package.Why the tag matters. Unity records the resolved commit of a git dependency in packages-lock.json and keeps honouring it, so adding the bare repository URL a second time is a no-op — you press Update and nothing happens. Changing the tag forces a re-resolve, and leaves the project on a version a teammate can reproduce.ASSEMBLIES▸ AnkleBreaker.MCPForUnity.Editor — the Welcome and Documentation windows.▸ AnkleBreaker.MCPForUnity.Installer.Editor — identity, presence probe, bridge resolver, update checker and installer. It references nothing, which is what lets it describe a project where the plugin is absent, and keeps its install button alive even if something else in the project fails to compile.Both are editor-only. There is no runtime assembly, so nothing this asset ships reaches a player build.EDITOR SURFACES ADDED▸ Tools > AnkleBreaker > MCP For Unity > Welcome▸ Tools > AnkleBreaker > MCP For Unity > Documentation▸ CLICKME.asset at the package rootTwo menu items and one asset — that is the whole footprint. Once installed, the plugin adds its own dashboard and Action History windows, which the buttons in this asset open for you.SETUP — ABOUT FIVE MINUTESImport. The Welcome window opens by itself.Install the plugin — one button.Add one server entry to your AI client. The Documentation window carries the exact block, per client, per OS, with a copy button.Ask your assistant something about the open project. Step 4 of the Welcome window reads the live bridge registry, so it reports the real connection rather than claiming one.PORTS, AND SEVERAL EDITORS AT ONCEThe plugin assigns itself a free port from 7890-7899, so a second editor never clashes with the first and a restart may land elsewhere. Nothing hardcodes it: both halves read the same shared instance registry — %LOCALAPPDATA%\UnityMCP\ on Windows, ~/.local/share/UnityMCP/ elsewhere — so the server and the editor agree on where an editor is instead of each guessing. Your config entry carries no port at all.EDITOR SCRIPTING APIReference AnkleBreaker.MCPForUnity.Installer.Editor from your own editor assembly:▸ MCPForUnityPlugin.IsInstalled and .InstalledVersion — is it here, and which version▸ MCPForUnityPluginInstaller.InstallLatest() — newest release, pinned▸ MCPForUnityPluginInstaller.Install("v1.2.3") — put a whole team on one version through code review▸ MCPForUnityUpdateChecker.Check(force, callback) — cached six hours; force only for an explicit user action▸ MCPForUnityBridge.Resolve() — the live port and ping URL for this editor, never a stored guessA versionDefines entry only defines its symbol for the assembly that declares it. So if you want to compile against the plugin's own types conditionally, add the same entry to your asmdef — name com.anklebreaker.unity-mcp, define AB_UNITY_MCP — exactly as this package's installer assembly does.WHAT IT SENDSThe whole package makes exactly one network call: a read of the GitHub API for the plugin's latest release, to learn a version tag. The answer is cached for six hours, so the unauthenticated rate limit is never a problem. Nothing about you or your project is sent anywhere. There is no telemetry and no cloud component in either half.KNOW THIS BEFORE YOU INSTALLAn assistant connected through the bridge can modify and delete project assets — that is the point of it. Work on a project under version control, and read the plugin's Action History when something surprises you.LINKS▸ Plugin source — https://github.com/AnkleBreaker-Studio/unity-mcp-plugin▸ MCP server source — https://github.com/AnkleBreaker-Studio/unity-mcp-server▸ Issues — https://github.com/AnkleBreaker-Studio/unity-mcp-plugin/issuesVideo/Image Editing for marketing assets of the store page.Coding of the MCP tool.
