ScratchRun for Claude Code

dev.scratchrun/mcp

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

client:Claude Code transport:stdio runtime:npm

Install ScratchRun in Claude Code

run in your project directory

claude mcp add mcp -e SCRATCHRUN_API_KEY=<SCRATCHRUN_API_KEY> -- npx -y @scratchrun/mcp-server

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs