Koskamo

unbrowser MCP

A lightweight, Chrome-free MCP browser for LLM agents that provides stateful sessions, bounded JavaScript execution, form handling, and low-token BlockMaps for efficient web interaction without launching full Playwright or Chrome instances.

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Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

unbrowser MCP logo, by UnchainedCommunity listingLocal stdioSource reviewed; not executedPublished by Unchained
You need:Install locally session profile $ unbrowser --mcppip install pyunbrowser
Vendor documentation

What you can do with it

  • Navigate web pages and retrieve structured BlockMaps
  • Query elements, click buttons, and type into forms
  • Execute bounded JavaScript within sessions
  • Escalate to full Unchained Chrome for complex authentication

Source and maintenance

Community listingRegistry 0.0.21
mcp-registry: io.github.protostatis/unbrowser@0.0.21Source repositoryProject website
Maintenance checked

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

pyunbrowser 0.0.21

pypiuvx
pyunbrowser package definition
{
  "version": "0.0.21",
  "transport": "stdio",
  "identifier": "pyunbrowser",
  "runtimeHint": "uvx",
  "registryType": "pypi",
  "registryBaseUrl": "https://pypi.org",
  "packageArguments": [
    {
      "type": "positional",
      "value": "--mcp"
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

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Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.
Cursor configuration
{
  "mcpServers": {
    "unbrowser-mcp": {
      "command": "uvx",
      "args": [
        "pyunbrowser==0.0.21",
        "--mcp"
      ]
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "unbrowser-mcp": {
      "command": "uvx",
      "args": [
        "pyunbrowser==0.0.21",
        "--mcp"
      ]
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.
VS Code configuration
{
  "servers": {
    "unbrowser-mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "pyunbrowser==0.0.21",
        "--mcp"
      ]
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.
Claude Desktop configuration
{
  "mcpServers": {
    "unbrowser-mcp": {
      "command": "uvx",
      "args": [
        "pyunbrowser==0.0.21",
        "--mcp"
      ]
    }
  }
}

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