# ScratchRun MCP Server

> ScratchRun MCP Server — ar-blues-scratchrun-mcp. Use this tool when you need to execute untrusted code in a secure, isolated environment, or require ephemeral, stateless execution of Python, Node, or bash scripts. It solves problems related to secure code execution, sandboxing, and preventing data persistence between runs. The tool takes in code snippets as input and outputs the execution results, providing a safe and reliable way to run code without compromising the host system.

Canonical page: https://skillsregistry.net/skills/ar-blues-scratchrun-mcp  
JSON: https://api.skillsregistry.net/v1/skills/ar-blues-scratchrun-mcp

## Description

Ephemeral MicroVM-isolated code execution for AI agents. Run Python, Node, or bash — fresh hardware-isolated VM per call, hard-purged after. No state persists between calls.

## Trust

- **Trust score (0–1):** 0.69
- **Verification tier:** scanned
- **Last scanned:** 2026-08-29

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** iot-hardware
- **Updated:** 2026-08-29

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/jw7vdpzzke)
- **Repository:** <https://github.com/ar-blues/scratchrun-mcp>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "ar-blues-scratchrun-mcp"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/ar-blues-scratchrun-mcp` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/ar-blues-scratchrun-mcp/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt