d3k (dev3000)

!d3k terminal interface

A debugging assistant that captures everything happening in your web app during development - server logs, browser events, network requests, and automatic screenshots - organized in a timeline that AI can understand.

Quick Start

``bash
bun install -g dev3000
d3k
`

You can also install with npm or pnpm if you prefer — bun is recommended.

Select an AI agent (Claude, Codex, etc.) and start debugging. Tell your agent: "fix my app"

Requirements

- Node.js >= v22.12.0
- tmux (for split-screen mode with AI agents)

What It Does

d3k runs your development server and monitors it in a browser, capturing:

- Server logs and console output
- Browser console messages and errors
- Network requests and responses
- Automatic screenshots (navigation, errors, interactions)
- User interactions (clicks, form submissions)

Everything is saved to timestamped logs that AI assistants can read to understand what went wrong and suggest fixes.

CLI Commands

$3

`bash
d3k # Start d3k with agent selection prompt
d3k --with-agent claude # Start with Claude in split-screen mode
d3k --no-agent # Start d3k standalone (no agent)
`

$3

`bash
d3k errors # Show recent errors (browser + server combined!)
d3k errors -n 20 # Show last 20 errors
d3k errors --context # Show interactions before each error (for replay)
d3k errors --all # Show all errors from the session

d3k logs # Show recent logs (browser + server combined)
d3k logs --type browser # Show only browser logs
d3k logs --type server # Show only server logs
d3k logs -n 100 # Show last 100 lines

d3k fix # Deep analysis of application errors
d3k fix --focus build # Focus on build/compilation errors
d3k fix --time 30 # Analyze last 30 minutes (default: 10)

d3k crawl # Discover URLs by crawling the app
d3k crawl --depth all # Exhaustive crawl (default: 1 level)

d3k find-component "nav.header" # Find React component source
d3k find-component "[data-testid='button']"

d3k restart # Restart the development server (rarely needed)
`

$3

`bash
d3k skill [name] # Get skill content or list available skills
d3k upgrade # Upgrade d3k to the latest version
d3k agent-browser # Run the bundled agent-browser CLI
d3k cloud # Cloud-based tools using Vercel Sandbox
`

Options

`bash
d3k --help # Show all options
`

| Option | Description |
|--------|-------------|
| -p, --port | Development server port (auto-detected) |
| -s, --script