Playwright (Cross-browser) MCP Server

Purpose

The Playwright MCP Server exposes Mobitru’s browser grid capabilities through MCP.
It enables fully automated cross-browser testing directly from AI-powered IDEs, with support for Chromium, Chrome, Firefox, and WebKit (Safari).

Primary Use Cases

  • Starting and controlling Playwright browser sessions.
  • Navigating to URLs, performing DOM interactions, and taking screenshots.
  • Simulating user behavior — clicks, typing, scrolling, navigation.
  • Running visual regression or layout validation tests.
  • Capturing browser-level artifacts such as network files, console logs, and performance data.

Typical Workflow

StepDescription
1. Initialize browserStart a new Playwright session specifying browser type (Chromium, Firefox, etc.).
2. NavigateLoad the target URL or web application.
3. InteractPerform clicks, inputs, or other scripted interactions.
4. Capture dataTake screenshots, save HAR or console logs.
5. Close sessionGracefully terminate the Playwright instance.

Example Flow

Open https://apple.com
Start a Chromium session
Click the ‘MacBook Pro’ banner
Take a full-page screenshot
Close the browser session

Notes

  • Safari support is provided via the WebKit engine or natively.
  • Typically, only one active Playwright session is managed at a time per MCP instance.
  • Multiple tabs can be opened inside the same session, but concurrent browser types require separate MCP processes.
  • Browser-level sessions are ephemeral and reset automatically after closure.
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