# Code Runner

> Use this tool when you need to execute code snippets in multiple programming languages directly within conversations, solving problems such as demonstrating code examples, testing algorithms, or exploring system information. It takes code snippets as input and returns the execution results, supporting over 30 languages through a simple configuration interface. Ideal for use cases where coding and conversation intersect, such as development, testing, or education.

Canonical page: https://skillsregistry.net/skills/formulahendry-code-runner  
JSON: https://api.skillsregistry.net/v1/skills/formulahendry-code-runner

## Description

Code Runner MCP Server enables AI assistants to execute code snippets in multiple programming languages directly within conversations. Built by Jun Han, it supports over 30 languages including JavaScript, Python, Ruby, Go, and more by creating temporary files and executing them with the appropriate interpreter. The server is designed for easy integration with VS Code and Claude Desktop through simple configuration, making it ideal for demonstrating code examples, testing algorithms, or exploring system information without leaving the conversation interface.

## Trust

- **Trust score (0–1):** 0.92
- **Verification tier:** verified
- **Last scanned:** 2026-09-19

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** file-system
- **Updated:** 2026-09-19

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/formulahendry-code-runner)
- **Repository:** <https://github.com/formulahendry/mcp-server-code-runner>

## 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": "formulahendry-code-runner"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/formulahendry-code-runner` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/formulahendry-code-runner/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