Playwright MCP Systems Engineering

Playwright MCP Systems Engineering
Designing Reliable, Secure, and Cost-Controlled Browser Agents with the Model Context Protocol

Browser automation is no longer about scripts. It's about systems.

As AI-powered browser agents move from experiments to production, engineering teams face a new class of problems: runaway costs, fragile workflows, security gaps, and context breakdowns between models and tools.

Playwright MCP Systems Engineering is the definitive guide to building production-grade browser agents using Playwright and the Model Context Protocol (MCP)-designed for engineers who care about reliability, security, observability, and cost control.

This book goes beyond tutorials and demos. It teaches you how to engineer browser agents as systems, not hacks.

Inside this book, you'll discover how to:

• Architect reliable browser agents that survive page changes, latency, and real-world edge cases

• Use Model Context Protocol (MCP) to cleanly separate models, tools, memory, and execution

• Design secure agent workflows that protect credentials, sessions, and sensitive data

• Prevent token waste and runaway inference costs with smart context boundaries

• Build observable, debuggable automation pipelines instead of black-box agents

• Engineer fault-tolerant Playwright systems for scraping, testing, data ops, and AI actions

• Scale browser agents from local experiments to production infrastructure

Most automation books teach how to click buttons.

This book teaches how to design systems that won't break at scale.

You'll learn:

• Why naïve agent designs fail in production

• How MCP changes the way browser agents are built

• How to think like a systems engineer, not a prompt engineer

The result? Predictable behavior, controlled costs, and secure automation you can trust.

This book is ideal for:

• AI & automation engineers

• Playwright developers moving into AI agents

• Systems engineers building agentic workflows

• Technical founders and product engineers

• Security-conscious teams deploying browser automation

If you've ever thought "this works... but I wouldn't deploy it in production", this book is for you.

By the end of this book, you'll be able to design:

• Production-ready browser agents

• MCP-compliant automation systems

• Secure, cost-efficient AI workflows

• Maintainable architectures instead of brittle scripts