ScratchRun MCP Server

by scratchrun

local only

ScratchRun runs on your own machine — the client starts it, so there is no endpoint to ping. Last commit 4 Aug 2026.

Ephemeral MicroVM-isolated code execution for AI agents. Fresh VM per call, hard-purged after.

—

Installs / week

npm · @scratchrun/mcp-server

Stars

0 open issues

4 Aug 2026

Last commit

0 releases in 90 days

—

License

JavaScript

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.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add mcp -- npx -y @scratchrun/mcp-server

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "mcp": {
      "args": [
        "-y",
        "@scratchrun/mcp-server"
      ],
      "command": "npx"
    }
  }
}

~/.codex/config.toml

[mcp_servers.mcp]
command = "npx"
args = ["-y", "@scratchrun/mcp-server"]

.cursor/mcp.json

{
  "mcpServers": {
    "mcp": {
      "args": [
        "-y",
        "@scratchrun/mcp-server"
      ],
      "command": "npx"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "mcp": {
      "args": [
        "-y",
        "@scratchrun/mcp-server"
      ],
      "command": "npx"
    }
  }
}

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ScratchRun — questions

Answers built from our own checks of this server.

Why is there no uptime for ScratchRun?

ScratchRun 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 @scratchrun/mcp-server.

How do I connect ScratchRun?

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 @scratchrun/mcp-server straight from npm; nothing to host, nothing to sign up for.

Is ScratchRun open source?

Yes — written in JavaScript and 0 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.