Node Repl MCP Server

by qwenlm

Standalone MCP server exposing a session-persistent Node.js REPL (node_repl) — independent of qwen-code core.

29kNode.jsstdio

context tax

pending

security

pending

cold start

pending

freshness

pending

Our reading of Node Repl, from the data

Node Repl is a code execution & sandboxes MCP server from qwenlm.

We haven't measured its tool list yet, so its token cost is unknown.

With 28,567 GitHub stars it ranks #2 of 357 code execution & sandboxes servers we index.

It runs locally on your machine over stdio.

Install Node Repl MCP server

claude mcp add node-repl -- npx -y @qwen-code/node-repl-mcp

{
  "mcpServers": {
    "node-repl": {
      "command": "npx",
      "args": [
        "-y",
        "@qwen-code/node-repl-mcp"
      ]
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "node-repl": {
      "command": "npx",
      "args": [
        "-y",
        "@qwen-code/node-repl-mcp"
      ]
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "node-repl": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@qwen-code/node-repl-mcp"
      ]
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "node-repl": {
      "command": "npx",
      "args": [
        "-y",
        "@qwen-code/node-repl-mcp"
      ]
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Freshness

Not enough public signals yet to judge maintenance.

Last commit (default branch)
2026-10-19 · today · GitHub
Latest release
2026-10-15 · 3d ago · GitHub · sdk-typescript-v0.1.20
Package published
no data · npm/PyPI
Registry entry updated
no data · official registry

How it compares in Code Execution & Sandboxes

Against the most-starred code execution & sandboxes servers we index. Token cost is per model turn, measured from each server's live tool list.

Server	Stars	Tools	Tokens / turn	Freshness	Runs
Node Repl (this)	28,567	—	not measured	—	local
REA	324,759	—	not measured	Active	local
Ask Jev	5,224	—	not measured	Active	hosted
Container Use	4,072	—	not measured	Maintained	—
MATLAB	1,679	—	not measured	Active	local
LLM Sandbox	1,132	—	not measured	Active	local

All code execution & sandboxes MCP servers

FAQ

›How do I install the Node Repl MCP server in Claude Code?

Run: claude mcp add node-repl -- npx -y @qwen-code/node-repl-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Node Repl require an API key?

No required environment variables are declared in its published metadata.

›Can I use Node Repl as a remote (hosted) MCP server?

No hosted endpoint is published; it runs locally over stdio.

›Is Node Repl in the official MCP registry?

No. It was indexed from npm.

Sources and method

GitHub repository: fetched 2026-10-19
Package registry (npm / PyPI): listed
Last checked against all sources: 2026-10-19

The description, packages and links come from the maintainer's own published metadata. Token cost, security signals, freshness and the reading above are MCPSkillHub's own measurements; see the methodology. Spot an error? Request a correction or claim the listing.