# Tag System

A powerful Gmail - integrated MCP server that provides comprehensive email management functions, including sending and receiving emails, label management, search and filtering, etc., interacting with AI assistants through natural language.

Librarian is a knowledge base server based on the MCP protocol, providing reading, search, and retrieval functions for structured documents for large language models. It organizes document content through a tag system and directory hierarchy.

The ClickUp MCP Server is a model context protocol server for integrating ClickUp tasks with AI applications. It supports managing tasks, spaces, lists, folders, etc. through a standardized protocol and provides functions such as time tracking and tag management.