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unreal-mcp-ue4 MCP Server

local only

unreal-mcp-ue4 runs on your own machine — the client starts it, so there is no endpoint to ping. 126 installs a week from npm. Last commit 26 May 2026.

UE4.27 MCP server for controlling Unreal Editor sessions over Python Remote Execution.

Installs per day peak 25 · avg 11 · -44% w/w
a month agotoday
126
Installs / week
npm · unreal-mcp-ue4
21
Stars
0 open issues
26 May 2026
Last commit
0 releases in 90 days
MIT
License
Python

What the code does

We read the source, 22 h ago · rules 3dff92dd89df

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

Builds a file path from a variable server/editor/prelude-loader.ts:5
    return fs.readFileSync(path.join(__dirname, filePath), "utf8")
Executes code built at runtime server/utils.ts:2
    return new Function(...Object.keys(vars), `return \`${tmpl}\`;`)(...Object.values(vars))

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Three servers free · no card

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

run in your terminal
claude mcp add unreal-mcp-ue4 -- npx -y unreal-mcp-ue4
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "unreal-mcp-ue4": {
      "args": [
        "-y",
        "unreal-mcp-ue4"
      ],
      "command": "npx"
    }
  }
}
~/.codex/config.toml
[mcp_servers.unreal-mcp-ue4]
command = "npx"
args = ["-y", "unreal-mcp-ue4"]
.cursor/mcp.json
{
  "mcpServers": {
    "unreal-mcp-ue4": {
      "args": [
        "-y",
        "unreal-mcp-ue4"
      ],
      "command": "npx"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "unreal-mcp-ue4": {
      "args": [
        "-y",
        "unreal-mcp-ue4"
      ],
      "command": "npx"
    }
  }
}

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unreal-mcp-ue4 — questions

Answers built from our own checks of this server.

Why is there no uptime for unreal-mcp-ue4?
unreal-mcp-ue4 runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package unreal-mcp-ue4 was installed 126 times last week.
How do I connect unreal-mcp-ue4?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls unreal-mcp-ue4 straight from npm; nothing to host, nothing to sign up for.
How many people use unreal-mcp-ue4?
The npm package unreal-mcp-ue4 was installed 126 times in the last week. Week over week that is -44%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is unreal-mcp-ue4 open source?
Yes — it is published under the MIT licence, written in Python and 21 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.