Developer · Local MCP server

ScratchRun

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

What the MCP Registry states

The entry as published to the official MCP Registry (read 2026-10-04), latest version.

Registry name
dev.scratchrun/mcp
Version
0.1.1
Status
Active
Category
developer
Transport
stdio (local process)
Package
npm
Published
2026-08-04
Updated
2026-08-04
Publisher
dev.scratchrun
Repository
github.com/ar-blues/scratchrun-mcp
Source
Registry API entry

Packages

RegistryPackageVersionTransportEnvironment variables
npmruntime: npx@scratchrun/mcp-server0.1.1stdioSCRATCHRUN_API_KEY (required, secret)

How to connect ScratchRun

ScratchRun runs locally from a Node.js package published to the npm registry: @scratchrun/mcp-server version 0.1.1. It speaks MCP over stdio, so the client starts it as a program and talks to it through standard input and output. It needs Node.js; clients usually start it with npx — the usual command is npx -y @scratchrun/mcp-server@0.1.1. It reads the environment variable SCRATCHRUN_API_KEY (required, secret); set it in the client's configuration for this server.

In the mcpServers JSON format that many desktop and editor MCP clients read, the entry looks like this (placeholders in angle brackets):

{
  "mcpServers": {
    "mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@scratchrun/mcp-server@0.1.1"
      ],
      "env": {
        "SCRATCHRUN_API_KEY": "<secret>"
      }
    }
  }
}

Derived from the registry entry, not tested here. What the server does, and on what terms, is set by its publisher; check its repository or website before giving it access to your accounts or files. How to add an MCP server to an assistant · Before you connect

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