# Code Runner

> Use this tool when you need to execute JavaScript and Python code securely, with isolated environments and dynamic input variables. It solves problems related to secure code execution, providing detailed results including output, errors, and resource usage. Ideal for use cases requiring code testing, validation, or demonstration, with a security-first design that protects your system from dangerous operations.

Canonical page: https://skillsregistry.net/skills/dravidsajinraj-iex-code-runner-mcp  
JSON: https://api.skillsregistry.net/v1/skills/dravidsajinraj-iex-code-runner-mcp

## Description

Execute JavaScript and Python code securely in isolated environments with comprehensive security restrictions. Pass dynamic input variables and receive detailed execution results including output, errors, and resource usage. Benefit from a security-first design that blocks dangerous operations and enforces execution timeouts to protect your system.

## Trust

- **Trust score (0–1):** 0.50
- **Verification tier:** unverified

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** container
- **Runtime environment:** vm
- **Category:** security
- **Updated:** 2026-05-14

## Source

- **Source listing:** [Smithery](https://smithery.ai/server/dravidsajinraj-iex/code-runner-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": "dravidsajinraj-iex-code-runner-mcp"
    }
  }
}
```

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