Playwright MCP Server - NixOS Flake

@benjaminkitt

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浏览器自动化

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stdio

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benjaminkitt

关于 Playwright MCP Server - NixOS Flake

A comprehensive NixOS Flake development environment for the Playwright MCP (Model Context Protocol) server with full Chrome and Firefox support, including persistent browser profiles.

#playwright#nixos#development-environment

Playwright MCP Server - NixOS Flake 配置

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Playwright MCP Server - NixOS Flake 工具

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概览

What is Playwright MCP Server - NixOS Flake?

A NixOS Flake development environment for the Playwright Model Context Protocol (MCP) server, providing complete Chrome/Chromium and Firefox browser support with persistent browser profiles. It wraps Microsoft’s official Playwright MCP server with NixOS-specific configurations for developers who want a reproducible setup on NixOS.

How to use Playwright MCP Server - NixOS Flake?

Clone or copy flake.nix, then activate with direnv allow or manually with nix develop. Run the server using playwright-mcp-wrapped (headed mode by default) or nix run. Use flags such as --headless, --browser firefox, --config /path/to/config.json, or --port 8931 for server mode. Import desktop profiles by running nix run .#setup-profiles.

Key features of Playwright MCP Server - NixOS Flake

Complete Playwright MCP server setup based on Microsoft’s implementation
Multi-browser support: Chrome/Chromium and Firefox
Browser profile persistence between sessions
Desktop profile integration (import existing profiles)
Properly configured for NixOS with all dependencies
Ready-to-use development shell with all tools
AI agent compatible (can be added as a URL to dev environments)

Use cases of Playwright MCP Server - NixOS Flake

Running Playwright MCP server on NixOS with persistent browser profiles
Using browser-automated AI agents that need recurring login state
Importing existing desktop Chrome or Firefox profiles into Playwright MCP
Configuring a remote MCP server accessible over a network port
Adding Playwright MCP as a development environment for Claude Desktop or similar AI tools

常见问题

How does this differ from the upstream Microsoft Playwright MCP server?

This flake wraps the upstream server with NixOS-specific configurations, providing multi-browser support, profile persistence, and a development shell, all managed via Nix.

What browsers are supported and how are they integrated?

Chrome/Chromium and Firefox are included as Nix packages and properly configured for Playwright. You can specify the browser with the `--browser` flag.

Where are browser profiles stored?

Browser profiles are stored in `~/.local/share/playwright-mcp/` – Chrome/Chromium under `chrome-profile` and Firefox under `firefox-profile`.

What if I get a “browser not found” error?

Run `nix run .#playwright-mcp -- --browser chromium` or set `PLAYWRIGHT_BROWSERS_PATH` to the Nix-build path for Playwright browsers.

How do I reset or fix profile issues?

Remove the profile directory (`~/.local/share/playwright-mcp/`) and rerun `nix run .#setup-profiles` to copy fresh profiles. Ensure the directory is writable with `chmod -R u+w`.

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