Model Context Protocol Servers

Reference implementations of the Model Context Protocol, a standard for connecting AI assistants to tools and data sources. Includes working examples in multiple languages to learn from before building your own.

The official Python SDK for Model Context Protocol servers and clients

Official Python library for building servers that connect AI models to external data and tools via the Model Context Protocol (MCP).

The official TypeScript SDK for Model Context Protocol servers and clients

The official TypeScript SDK for building Model Context Protocol servers and clients, letting AI applications share tools, resources, and context with language models in a standardized way.

Visual testing tool for MCP servers

Specification and documentation for the Model Context Protocol

A community driven registry service for Model Context Protocol (MCP) servers.

The official Go SDK for Model Context Protocol servers and clients. Maintained in collaboration with Google.

The official C# SDK for Model Context Protocol servers and clients. Maintained in collaboration with Microsoft.

The official Rust SDK for the Model Context Protocol

The official Java SDK for Model Context Protocol servers and clients. Maintained in collaboration with Spring AI

Official repo for spec & SDK of MCP Apps protocol - standard for UIs embedded AI chatbots, served by MCP servers

Desktop Extensions: One-click local MCP server installation in desktop apps

The official PHP SDK for Model Context Protocol servers and clients. Maintained in collaboration with The PHP Foundation.

The official Swift SDK for Model Context Protocol servers and clients.

The official Kotlin SDK for Model Context Protocol servers and clients. Maintained in collaboration with JetBrains

A repository of servers and clients from the Model Context Protocol tutorials

No description.

The official Ruby SDK for the Model Context Protocol.

Create a Python MCP server

Documentation for the Model Context Protocol (MCP)

Reference MCP servers that are no longer maintained

CLI tool to create a new TypeScript MCP server

Experimental exploration of skills discovery and distribution through MCP primitives. Maintained by the Skills Over MCP Working Group.

Extensions to authorization

Discussions and README for Model Context Protocol

A hosted version of the Everything server - for demonstration and testing purposes, hosted at https://example-server.modelcontextprotocol.io/mcp

Conformance Tests for MCP

Financial Services Interest Group

Infrastructure as Code for MCP access management

No description.

Status: Experimental. This repository provides a multi-language reference implementation of the proposed interceptor extension for the Model Context Protocol (MCP), as described in SEP-2624.

Transports Working Group

Infrastructure as Code for MCP domains / DNS management

Incubation space for the MCP Triggers & Events Working Group

About experimental exploration of organization for MCP primitives. Maintained by the Primitive Grouping Interest Group.

want a static file hosted somewhere? static.modelcontextprotocol.io is somewhere!

Status: Experimental. This repository provides a multi-language reference implementation of the variants proposal for the Model Context Protocol (MCP), as described in SEP-2053.

Staging grounds for the Agents Working Group

Status: Experimental. This repository provides a reference for the tasks extensions to the MCP protocol, allowing for long-running operations, such as Agent communication, in MCP.

No description.

GitHub Actions relevant to the management of MCP repositories.

Repository for the Tool Annotations Interest Group