The Problem

Full-stack development suffers from a fundamental visibility gap:

As a user: You can't see backend logs inside Claude Code
If you run backend server in terminal: Claude Code can't see your logs
Result: Endless context switching between code, browser, and terminal logs that kills productivity and breaks flow state

You and your AI assistant are literally looking at different things, making true collaboration impossible.

True Co-Development

The F2E-Backend workflow creates a shared vision between you and Claude Code CLI:

Claude controls your browser via Playwright MCP - same view as you
Claude reads real-time server logs with npm run dev:logs + npm run monitor
Claude sees both frontend behavior AND backend state simultaneously

What You See Is What You Get: When you describe what you want, Claude sees exactly what you see and develops accordingly.

How It Works

# 1. Start development server with logging
npm run dev:logs

# 2. Claude opens browser via MCP
# 3. Navigate to localhost:3000
# 4. Monitor logs in parallel with npm run monitor

# Result: Claude develops with full-stack awareness

The Game Changer

Instead of this traditional cycle:

Change backend → Switch to browser → Refresh → Check logs → Debug → Repeat

You get this:

Describe feature → Claude implements with real-time validation across the entire stack

Why This Matters in 2025

Browser automation is mainstream (Playwright MCP, Browser Use)
AI development tools evolved beyond code completion
Real-time observability is expected, not optional
Developer experience demands seamless full-stack workflows

API Development: Backend changes with instant frontend validation
Bug Investigation: AI correlates frontend errors with backend logs in real-time
Feature Implementation: End-to-end development with continuous full-stack validation

The Bottom Line

This isn't just another development tool—it's the evolution from AI assistant to AI co-developer. Claude doesn't just write code; it develops alongside you with full awareness of your entire application stack.

The future of development is here: AI that sees your browser, reads your logs, and thinks about your entire system holistically.

Ready to experience AI co-development?

🚀 Get started: npm install -g claude-setup-cli
📦 NPM Package: https://www.npmjs.com/package/claude-setup-cli
📁 F2E-Backend Workflow: https://github.com/wahengchang/claude-setup-cli/tree/main/templates/workflows/f2e-backend-workflow

Claude Code Co-Development with Playwright and Backend: What You See Is What You Get