Playwriter

Playwriter is a revolutionary open-source tool that bridges the gap between AI agents and the real web. It solves the fundamental problem where AI agents either have no browser access or are forced to use a fresh, sterile browser instance with no logins, no extensions, and instant bot detection. Instead, Playwriter gives AI agents direct, programmable control over your actual, authenticated Chrome browser session. This means the agent works within a browser that already has all your cookies, logins, installed extensions, and user profile, making its actions indistinguishable from a human user. It provides a full Playwright automation API through a simple Chrome extension and CLI, enabling sophisticated tasks like taking lightweight accessibility snapshots, debugging with breakpoints, live code editing, intercepting network requests, and recording video. Designed for a cyclical and iterative workflow, Playwriter fosters continuous improvement by allowing seamless collaboration between human and AI, where the agent handles repetitive automation and the human steps in to guide it through complex hurdles. It's built for developers, QA engineers, and power users working with AI coding assistants in Cursor, Claude Desktop, VS Code, and other MCP clients who need their agents to interact with the web as they do.

Your Authenticated Browser Session

Playwriter's core feature is granting AI agents access to your real Chrome browser. This eliminates the barriers of headless instances or fresh profiles. Your existing sessions, saved logins, cookies, and even installed extensions like password managers or ad blockers are all present. This not only bypasses common bot detection mechanisms but also saves significant memory since it doesn't require spawning a duplicate browser process. The agent operates in an environment that truly reflects a real user's state, making automation of logged-in workflows seamless and effective.

Full Playwright API via a Single Tool

Unlike other solutions that expose a limited, fixed set of predefined tools, Playwriter provides the entire powerful Playwright automation library through one simple execute command. This means your AI agent can write and run any Playwright code—clicking, typing, navigating, waiting for elements, extracting data, and more. This approach avoids "schema bloat" from dozens of individual tool definitions, drastically reducing context window usage in AI models and giving the agent maximum flexibility to solve complex browsing tasks without artificial constraints.

Advanced Debugging and Inspection Suite

Playwriter transforms your browser into a fully debuggable environment for AI agents. It includes a sophisticated debugger that allows setting breakpoints to pause execution, live editing of the running Playwright code for on-the-fly adjustments, and network request interception to monitor or modify API calls. This suite enables a truly iterative development cycle where the agent can profile performance, diagnose issues, and refine its approach in real-time, leading to more robust and reliable automation scripts.

Lightweight Accessibility Snapshots & Recording

Instead of relying on bulky, bandwidth-intensive full-page screenshots, Playwriter captures intelligent, structured accessibility snapshots. These snapshots are incredibly small (5-20KB) and contain the semantic structure of the page, including roles, labels, and relationships, which AI agents can parse far more efficiently than pixel data. Coupled with optional full video recording of sessions, this provides perfect context for both the AI and the human collaborator to understand what happened during an automation run, facilitating review and continuous improvement.

AI-Powered Web Testing and QA

Enable your AI assistant to perform automated, real-user testing directly in your production-like browser environment. It can log into your web application, navigate complex user journeys, fill out forms, and validate outcomes—all while using your actual session data. This cyclical process allows for continuous test script improvement as the AI learns from each interaction, and you can step in to handle unexpected UI changes or captchas, creating a powerful human-in-the-loop testing pipeline.

Automated Data Extraction and Research

Instruct your AI agent to conduct web research or monitor websites for specific information. Because it uses your logged-in browser, it can access subscription-based content, private dashboards, or personalized feeds that are impossible for a fresh bot to reach. The agent can iteratively refine its extraction logic based on the structure of the snapshots it receives, and you can collaborate by solving paywalls or login prompts it encounters, making data gathering effortless and comprehensive.

Repetitive Task Automation and Workflows

Offload tedious, repetitive web tasks to your AI agent. This could include daily reporting from a business dashboard, routine content moderation on a platform, or automated form submissions. Playwriter allows the agent to perform these tasks within the exact browser context you use, ensuring all your preferences and settings are applied. The iterative nature means you can gradually teach the agent to handle more complex sequences and edge cases, building a more capable assistant over time.

Building and Refining AI Web Skills

Use Playwriter as a development platform for creating and honing AI "skills" for web interaction. Developers can work alongside an AI to write, test, and debug Playwright scripts in a real browser. The live code editing and debugger features are perfect for this collaborative, cyclical development process. You can rapidly prototype an automation, see exactly where it fails, adjust the strategy with the AI, and re-run it, leading to the continuous improvement of sophisticated web automation capabilities.

How does Playwriter differ from a traditional headless browser?

Traditional headless browsers or automation tools spawn a completely new, isolated browser instance with no user data, making them easily detectable as bots and unable to access logged-in services. Playwriter is fundamentally different: it connects an AI agent directly to your existing, open Chrome browser. This means it leverages your real cookies, local storage, extensions, and user agent, allowing automation that perfectly mimics human behavior and accesses all the websites you're already signed into.

Is my browsing data sent to a remote server?

No. Playwriter is designed with privacy and security as a priority. All communication happens locally on your machine. The Chrome extension connects to a small WebSocket relay running on localhost:19988. Your AI client (CLI or MCP server) also connects to this local relay. All commands and data, including CDP instructions and snapshots, flow through this local loop. No data is sent to any remote server, and no account is required.

What happens if the AI gets stuck or hits a captcha?

This is where Playwriter's collaborative, cyclical workflow shines. You are sharing the browser with the agent in real-time. If a captcha, consent wall, or unexpected modal appears, you can simply look at your browser tab and solve it yourself. Once the obstacle is cleared, you re-enable the extension for that tab, and the AI agent can continue its task from where it left off. This human-in-the-loop approach is core to handling the dynamic nature of the modern web.

Can I use Playwriter with any AI assistant?

Yes, Playwriter is compatible with any client that supports the Model Context Protocol (MCP), which is becoming a standard for AI tool integration. This includes popular coding assistants like Cursor, Claude Desktop, Windsurf, and IDEs with MCP plugins like VS Code. The provided "skill" teaches these agents how to effectively use the Playwriter API, including best practices for selectors and handling timeouts, making it a versatile tool for any MCP-enabled AI.