Is the hmr MCP server free to use?

Yes. hmr is listed on AllMCPs as a free, open Model Context Protocol server you can install into Claude Desktop, Cursor, or any MCP-compatible client.

Is the hmr MCP server free to use?

Yes. hmr is listed on AllMCPs as a free, open Model Context Protocol server you can install into Claude Desktop, Cursor, or any MCP-compatible client.

Hmr

Hot Module Reload (HMR) for Python with reactive programming and MCP tools

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Manual Client & Custom JSON ConfigExpand JSON ▾

Install Config Generator

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claude_desktop_config.json

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

💡 Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows)

Documentation Overview

Reactive & Interactive programming with Pyodide

This repo contains the Pythonline website and related subcomponents, including:

hmr: a library for reactive programming and hot module reloading [Docs] [Home] [PyPI] [Demo]

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Frequently Asked Questions about Hmr

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "hmr": { "command": "npx", "args": ["-y", "hmr"] } }

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Technical Specs & Signals

CategoryDeveloper Tools

0/5 checks healthy over the last 7h

27Quality signal: Emerging · 27/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership8/20

Documentation & tools11/30

Adoption & activity1/15

Community engagement0/10

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More in 💻 Developer Tools →Best MCP servers for Developers →Alternatives to Hmr →Install in Claude Desktop Install in Cursor Install in VS Code