🔧

mcp-js

🔧MCP Server

r33drichards/mcp-js

What it does

A Rust-based MCP server exposing a V8 JavaScript runtime as a tool for AI agents, with persistent heap snapshots via S3 or local filesystem.

localfile

Installation

Claude CLIAdd MCP server via Claude CLIAuto-generated from README. View full documentation on GitHub →

claude mcp add mcp-v8 -- mcp-v8 --directory-path /tmp/mcp-v8-heaps

Remote ServerConnect to remote MCP server

claude mcp add mcp-v8 -t sse https://mcp-js-production.up.railway.app/sse

Claude CLIAdd MCP server via Claude CLI

claude mcp add

Claude Desktop ConfigurationServer configuration (JSON)

{
  "mcpServers": {
    "js": {
      "command": "mcp-v8",
      "args": ["--dir...

Last UpdatedFeb 27, 2026