@alexstrnik/claude-devtools

Claude DevTools

Fix your frontend code right from DevTools.

Pick a component, write your prompt, and send it directly to Claude Code—without leaving the page.

Quick Start

1. Install the host server

npm install -g @alexstrnik/claude-devtools

2. Install the Chrome extension

Option A: Download latest release (Easiest)

1. Go to Releases
2. Download claude-devtools-chrome-vX.X.X.zip
3. Open Chrome → Extensions → Enable Developer mode
4. Drag and drop the zip file directly onto the Extensions page

Option B: Clone from source

1. Clone this repo: git clone https://github.com/AlexStrNik/claude-devtools
2. Open Chrome → Extensions → Enable Developer mode
3. Click Load unpacked → select chrome-extension folder

3. Start the host server

In your project directory:

claude-devtools

The claude-devtools command works just like the regular claude CLI. It starts an interactive Claude Code session and accepts all the same arguments (except --version), which are passed directly to the underlying Claude process.

Usage

1. Open DevTools → Claude DevTools tab
2. Click Pick Element → select a component on the page
3. Write your prompt or question
4. Hit Send to Claude (or Cmd/Ctrl+Enter)

Your element's context is sent directly to Claude, including:

• Component name, props, and hierarchy paths
• DOM structure and computed styles
• Screenshot (macOS only)

Features

• React support: Full component detection with props and source locations (React <19 and React 19+)
• Preact support: Component hierarchy detection via Preact DevTools (requires Preact DevTools extension)
• Angular support: Complete component hierarchy (tested on Angular 17)
• Vue support: Component detection for Vue 2 and Vue 3
• Svelte support: Component hierarchy with source locations
• Screenshots: Automatic element capture for visual context (macOS only)
• Customizable context: Toggle what data to include before sending

Development

# Clone repository
git clone https://github.com/AlexStrNik/claude-devtools

# Install host dependencies
cd claude-devtools
pnpm install

# Start server
pnpm start

Load the extension from the chrome-extension folder in Chrome DevTools.

Roadmap

• Screenshot support for Linux/Windows
• Additional framework support

License

MIT