What is the key difference between Unbrowser and Aethyn Browser MCP?

Unbrowser belongs to the Browser Automation category with local stdio execution, while Aethyn Browser MCP belongs to the Browser Automation category with local stdio execution.

How do I install Unbrowser or Aethyn Browser MCP in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are Unbrowser and Aethyn Browser MCP free or paid?

Unbrowser operates under a Free / Open Source model (No auth required). Aethyn Browser MCP operates under a Freemium model (API Key required).

Which MCP server has more tools and community activity?

Unbrowser lists 6 tools with 4 views and 15 GitHub stars. Aethyn Browser MCP lists 10 tools with 2 views and 3 GitHub stars.

Can I use both Unbrowser and Aethyn Browser MCP together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

Side-by-Side Model Context Protocol Comparison

Unbrowser vs Aethyn Browser MCP

In-depth architectural comparison of the Unbrowser and Aethyn Browser MCP MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

At a Glance & Executive Verdict

Unbrowser

Browser Automation · Local stdio

Quality: 55/100 (Good) | Auth: No auth required

Aethyn Browser MCP

Browser Automation · Local stdio

Quality: 61/100 (Good) | Auth: API Key required

Verdict Summary: Choose Unbrowser if you need specialized Browser Automation tools running via a local process. Choose Aethyn Browser MCP if your workspace requires Browser Automation integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose Unbrowser when:

You need dedicated capabilities in the Browser Automation domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Primary tools included: Stateful cookies and DOM sessions, Structured BlockMap page output, Stable element references.

Explore Unbrowser Details

Choose Aethyn Browser MCP when:

You need dedicated capabilities in the Browser Automation domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: API Key required (Freemium).
You have access to required keys: AETHYN_USERNAME, AETHYN_PASSWORD, AETHYN_DEFAULT_TIER, AETHYN_HEADLESS, PROXY_HOST, PROXY_PORT, PROXY_USERNAME, PROXY_PASSWORD.
Primary tools included: aethyn_launch_browser, aethyn_navigate, aethyn_get_content.

Feature & Specification Comparison

Specification	Unbrowser protostatis Browser Automation	Aethyn Browser MCP aethynio Browser Automation
Summary	Lightweight browser MCP server for LLM agents. Runs JavaScript, follows links, fills forms, manages cookies, and returns low-token BlockMaps from a single native binary without Chrome.	Drive a local Playwright browser through residential proxies with the agent choosing the exit country/city and holding one sticky identity per task. 10 tools: launch, navigate, accessibility snapshot, click, type, content extraction, exit-IP verification, and per-task identity rotation. Free trial, no card.
Category & Scope

Tools & Capabilities Breakdown

Unbrowser Tools (6)

Stateful cookies and DOM sessions

Structured BlockMap page output

Stable element references

HTML link and form handling

Bounded QuickJS script execution

Challenge and SPA escalation signals

Aethyn Browser MCP Tools (10)

aethyn_launch_browser

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

Unbrowser Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "protostatis-unbrowser": {
      "command": "uvx",
      "args": [
        "pyunbrowser"
      ]
    }
  }
}

Aethyn Browser MCP Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "aethynio-aethyn-browser-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "aethyn-browser-mcp"
      ],
      "env": {
        "AETHYN_USERNAME": "YOUR_AETHYN_USERNAME_HERE",
        "AETHYN_PASSWORD": "YOUR_AETHYN_PASSWORD_HERE",
        "AETHYN_DEFAULT_TIER": "YOUR_AETHYN_DEFAULT_TIER_HERE",
        "AETHYN_HEADLESS": "YOUR_AETHYN_HEADLESS_HERE",
        "PROXY_HOST": "YOUR_PROXY_HOST_HERE",
        "PROXY_PORT": "YOUR_PROXY_PORT_HERE",
        "PROXY_USERNAME": "YOUR_PROXY_USERNAME_HERE",
        "PROXY_PASSWORD": "YOUR_PROXY_PASSWORD_HERE"
      }
    }
  }
}

Frequently Asked Questions

Unbrowser is categorized under Browser Automation and uses a local stdio subprocess. In contrast, Aethyn Browser MCP belongs to Browser Automation using local stdio subprocess. Select Unbrowser when you need capabilities focused on browser automation and Aethyn Browser MCP when you require tools for browser automation.

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