r33drichards/mcp-js

Developer Tools

A Javascript code execution sandbox that uses v8 to isolate code to run AI generated javascript locally without fear. Supports heap snapshotting for persistent sessions.

Overview

Direct install

Run the underlying MCP server directly — without Agent-CoreX routing.

npx -y mcp-js

Use with Agent-CoreX

Agent-CoreX intelligently routes which tools from r33drichards/mcp-js your AI agent actually needs per request — reducing token usage and cost.

agent-corex.json

{
  "mcpServers": {
    "mcp-js": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-js"
      ]
    }
  }
}

Route r33drichards/mcp-js intelligently

Connect in 2 minutes. Only pay for the tools your agent actually uses.

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Git

Git repository operations and history inspection

Sequential Thinking

Support for step-by-step reasoning with explicit thought processes

GitHub

Access GitHub repositories, issues, and pull requests

Installation Guide

Use with Agent-CoreX

Recommended: intelligent tool routing, lower costs

uvx agent-corex mcp add mcp-js

Agent-CoreX selects only the tools your agent needs, cutting token usage by up to 60%.

Direct Install

Use r33drichards/mcp-js directly without routing

npx -y mcp-js

New to Agent-CoreX? View setup guide →

Direct install

Use with Agent-CoreX

Route r33drichards/mcp-js intelligently

More Developer Tools servers

Git

Sequential Thinking

GitHub

Installation Guide

Use with Agent-CoreX

Direct Install