Tampermonkey MCP

Install

Works with Claude Code, Codex, VS Code, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/tampermonkey-tampermonkey-mcp

About

Use cases: browser-automation

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Permissions

What this server can do and what it asks for, from its tool list, install config and code. Checked Oct 25, 2026.

Tools

3 read · 2 write · 1 delete

Secrets

None asked for

Install scripts

None found

Runs as

Node.js package

Tools (6)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

• tampermonkey_delete

  Delete a userscript by path. **Input:** - `path`: The script or resource path (<script-uuid>/source, <script-uuid>/storage or <script-uuid>/<external-resource-url>) **Output:** - `success`: true if script was deleted successfully - `error`: Error object if deletion failed (e.g., script not found)

• tampermonkey_get

  Get the content of a specific userscript. **Input:** - `path`: The script path (from list operation) - `ifNotModifiedSince` (optional): Unix timestamp - only return if script was modified after this time **Output:** - `value`: The script source code - `lastModified`: Unix timestamp of last modification - `error`: Error object if script not found or concurrent edit detected

• tampermonkey_get_connection_code

  REQUIRED FIRST STEP: Get the connection code to connect Tampermonkey Editors to the MCP server. **How it works:** The MCP server creates a WebSocket server that waits for Tampermonkey Editors to connect. You must call this tool FIRST to start the WebSocket server and get a connection code. Then enter the code in the Tampermonkey Editors extension - it will connect TO the MCP server. **Steps:** 1. Call this tool to get the connection code 2. Open Tampermonkey Editors extension in your browser 3. Enter the code in the ext…

• tampermonkey_list

  List all userscripts available in Tampermonkey. **Input:** - `pattern` (optional): Filter scripts by name pattern - `includePattern` (optional): Filter scripts by include URL pattern **Output:** Array of userscript metadata including: - `name`: Script name - `namespace`: Script namespace - `path`: Script path (used for get/patch operations) - `requires`: List of @require dependencies - `storage`: Storage path (if any)

• tampermonkey_patch

  Update the content of a userscript. **Input:** - `path`: The script or resource path (from list operation) - `value`: The new script content - `lastModified` (optional): Unix timestamp for optimistic locking **Output:** - `success`: true if patch was applied successfully - `error`: Error object if patch failed (e.g., concurrent edit conflict)

• tampermonkey_put

  Create a new userscript. **Input:** - `value`: The script source code content - `lastModified` (optional): Unix timestamp for optimistic locking **Output:** - `success`: true if script was created successfully - `path/name`: The path and name of the new script - `error`: Error object if creation failed (e.g., script already exists, concurrent edit conflict)

Signals

Stars

57

Forks

7

Open issues

1

Contributors

3

Last commit

Oct 8, 2026 (22 days ago)

Last release

May 13, 2026 (5 months ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name

io.github.Tampermonkey/tampermonkey-mcp

Version

0.0.4

Auth

No auth

Packages

npm tampermonkey-mcp

License

License unknown

Repository

github.com/Tampermonkey/tampermonkey-mcp

First seen

Oct 24, 2026

Last checked

Oct 24, 2026

Source

Official MCP Registrygithub-graphql