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Deno 2 Playwright MCP Server

MCP Server

Browser automation for LLMs with Playwright on Deno 2

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Updated Dec 25, 2024

About

A Model Context Protocol server that uses Playwright to let large language models control real browsers, capture screenshots, and run JavaScript. It runs as a standalone binary on Deno 2 for cross‑platform deployment.

Capabilities

Resources
Access data sources
Tools
Execute functions
Prompts
Pre-built templates
Sampling
AI model interactions

Deno 2 Playwright Model Context Protocol Server

The Deno 2 Playwright MCP server bridges large‑language models (LLMs) and real browsers by exposing Playwright’s automation engine through the Model Context Protocol. By running a lightweight binary compiled with Deno 2, developers can let an AI assistant open web pages, click elements, extract data, or capture screenshots—all inside a fully controlled browser environment. This removes the need for custom Selenium or Puppeteer wrappers and gives AI agents direct, typed access to browser actions via the MCP interface.

Solving the “AI‑to‑Browser” Gap

Traditional browser automation requires a separate driver, manual setup of WebDriver services, or complex JavaScript bundling. The MCP server abstracts these details behind a standard protocol: an LLM can simply call or , and the server translates those requests into Playwright commands. This eliminates boilerplate, reduces friction for developers who want to add web‑interaction capabilities to their AI workflows, and ensures consistent behavior across operating systems because the binary is self‑contained.

What It Does

  • Automated browsing: Open URLs, navigate history, fill forms, and interact with page elements.
  • Screenshot capture: Take full‑page or element‑specific screenshots for visual verification or data extraction.
  • JavaScript execution: Run arbitrary scripts in the page context, enabling dynamic content retrieval or manipulation.
  • Resource handling: The server exposes Playwright’s context, page, and browser resources through MCP tools, allowing fine‑grained control over timeouts, viewport size, or device emulation.

All these capabilities are exposed as MCP tools that an AI assistant can invoke by name, making them discoverable and reusable in prompts.

Key Features

  • Zero‑runtime dependencies: Compiled with Deno 2 into a single binary, the server runs on macOS, Linux (x86_64/ARM64), and Windows without requiring a Node.js or Deno runtime.
  • Type‑safe API: The server follows the official MCP specification, ensuring that tool signatures and responses are well‑defined and validated.
  • Built on Playwright: Leverages Playwright’s robust cross‑browser support (Chromium, WebKit, Firefox) and modern automation APIs.
  • Extensible architecture: The server’s codebase is derived from the official Puppeteer MCP server, so developers familiar with that ecosystem can extend or customize it with minimal friction.

Use Cases

  • Web scraping: An AI assistant can navigate to a product page, extract pricing data, and return structured JSON.
  • Automated testing: Use the server in a CI pipeline where an LLM writes test cases that are executed directly in a real browser.
  • Interactive demos: Let an AI generate step‑by‑step tutorials that actually render the web page in real time.
  • Data validation: Capture screenshots of dynamic dashboards to verify visual changes after a deployment.

Integration with AI Workflows

Developers integrate the server by adding it to the section of their Claude desktop configuration. Once registered, any LLM that supports MCP can call the server’s tools as part of a prompt. For example, an assistant could respond to “Show me the latest news headline” by invoking and then extracting the headline element. The server handles all browser interactions, returning results that the assistant can embed in its reply.

Standout Advantages

  • Performance: Deno 2’s compilation produces fast, low‑overhead binaries that start quickly—ideal for real‑time AI interactions.
  • Cross‑platform consistency: A single binary works across major OSes, simplifying deployment in heterogeneous environments.
  • Community‑backed: Built upon the official MCP server infrastructure, it inherits best practices and community support for future updates.

In summary, the Deno 2 Playwright MCP server equips AI assistants with reliable, typed browser automation while keeping deployment simple and platform‑agnostic. It is a powerful tool for developers looking to add real‑world web interaction to their AI workflows without the overhead of managing separate automation stacks.