Tool-to-Agent Protocol: tools can be smart without embedded LLM calls.
Specification and documentation for the Model Context Protocol
A community driven registry service for Model Context Protocol (MCP) servers.
The official Ruby SDK for the Model Context Protocol servers and clients.
The official PHP SDK for Model Context Protocol servers and clients. Maintained in collaboration with The PHP Foundation.
MCPSharp is a .NET library that helps you build Model Context Protocol (MCP) servers and clients - the standardized API protocol used by AI assistants and models.
Plane's Official Model Context Protocol Server 🔌 ⌨️ 🔥
A powerful Model Context Protocol server for LinkedIn API integration
A Model Context Protocol (MCP) server for Zammad integration, enabling AI assistants to interact with tickets, users, and organizations.
🗂️🤖 Airtable Model Context Protocol Server, for allowing AI systems to interact with your Airtable bases
A comprehensive collection of Model Context Protocol (MCP) servers
An integration that allows Claude Desktop to interact with Spotify using the Model Context Protocol (MCP).
A powerful Model Context Protocol (MCP) server for IMAP email integration with Claude
A server that integrates Linear's project management system with the Model Context Protocol (MCP) to allow LLMs to interact with Linear.
Model Context Protocol server implementation for Reddit

A Model Context Protocol server for Zendesk
Control and query Home Assistant from Claude and other LLMs — a Model Context Protocol (MCP) server.
A powerful Model Context Protocol (MCP) server providing comprehensive Google Maps API integration with LLM processing capabilities.
Model Context Protocol server for ActivityWatch time tracking data
A Model Context Protocol for checking domain name registration status in bulk.
TikTok Ads MCP Server – Model Context Protocol Server for TikTok Ads Marketing API Integration
🗓️ A CalDAV Model Context Protocol (MCP) server to expose calendar operations as tools for AI assistants.
A Model Context Protocol (MCP) server that provides seamless integration with OpenProject API v3.
Open-source AI agent with MCP UI, app builder, A2A protocol, skills marketplace, and multi-provider chat. Built with Mastra. Alternative to OpenClaw.