Koskamo

Tampermonkey MCP

An MCP server that enables AI assistants to manage Tampermonkey userscripts. It allows agents to list, read, write, patch, and delete userscripts by communicating with the Tampermonkey Editors browser extension via a WebSocket connection established through a connection code.

Package and access

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

Tampermonkey MCP logo, by TampermonkeyCommunity listingLocal stdioSource reviewed; not executedPublished by Tampermonkey
You need:First install the following browser extensions: Tampermonkey Tampermonkey Editors for Firefox or ChromeThen install tampermonkey-mcp globally: npm install -g tampermonkey-mcp@latest
Vendor documentation

What you can do with it

  • List existing userscripts in the browser
  • Read the content of a specific userscript
  • Write or patch userscript code
  • Delete unwanted userscripts

Source and maintenance

Community listingRegistry 0.0.4
mcp-registry: io.github.Tampermonkey/tampermonkey-mcp@0.0.4Source repository
Maintenance checked

Packages and installation

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

tampermonkey-mcp 0.0.4

npm
tampermonkey-mcp package definition
{
  "version": "0.0.4",
  "transport": "stdio",
  "identifier": "tampermonkey-mcp",
  "registryType": "npm",
  "registryBaseUrl": "https://registry.npmjs.org"
}

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.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.
Cursor configuration
{
  "mcpServers": {
    "tampermonkey-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "tampermonkey-mcp@0.0.4"
      ]
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "tampermonkey-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "tampermonkey-mcp@0.0.4"
      ]
    }
  }
}

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": {
    "tampermonkey-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "tampermonkey-mcp@0.0.4"
      ]
    }
  }
}

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": {
    "tampermonkey-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "tampermonkey-mcp@0.0.4"
      ]
    }
  }
}

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