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modelcontextprotocol/java-sdk

Java & Spring MCP

Java SDK for the Model Context Protocol (MCP), providing seamless integration between Java and Spring applications and MCP-compliant AI resources and tools.

Overview

Provides Java and Spring Framework integration for the Model Context Protocol. It enables Java applications to interact with AI models and tools through a standardized interface, supporting both synchronous and asynchronous communication patterns.

Modules

The project consists of two main modules:

Java implementation of the Model Context Protocol specification. It includes:

  • Synchronous and asynchronous MCP Client and MCP Server implementations
  • Standard MCP operations support (tool discovery, resource management, prompt handling, structured logging). Support for request and notification handling.
  • Stdio and SSE transport implementations.
  • Find more.

The Spring integration module provides Spring-specific functionality:

  • Integration with Spring AI's function calling system
  • Spring-friendly abstractions for MCP clients
  • Auto-configurations (WIP)

Requirements

  • Java 17 or later
  • Maven 3.6 or later
  • Spring AI 1.0.0-M4 or later

Installation

Add the following dependencies to your Maven project:

<!-- For core MCP functionality -->
<dependency>
    <groupId>org.springframework.experimental</groupId>
    <artifactId>mcp</artifactId>
    <version>0.4.0-SNAPSHOT</version>
</dependency>

<!-- For Spring AI integration -->
<dependency>
    <groupId>org.springframework.experimental</groupId>
    <artifactId>spring-ai-mcp</artifactId>
    <version>0.4.0-SNAPSHOT</version>
</dependency>

Example Demos

Explore these MCP examples in the spring-ai-examples/model-context-protocol repository:

  • SQLite Simple - Demonstrates LLM integration with a database
  • SQLite Chatbot - Interactive chatbot with SQLite database interaction
  • Filesystem - Enables LLM interaction with local filesystem folders and files
  • Brave - Enables natural language interactions with Brave Search, allowing you to perform internet searches.
  • Spring-ai-mcp-sample - Showcases how to create and use MCP servers and clients with different transport modes and capabilities.

Documentation

Development

Building from Source

mvn clean install

Running Tests

mvn test

Project Information

  • Group ID: org.springframework.experimental
  • Version: 0.4.0-SNAPSHOT
  • Java Version: 17
  • Spring AI Version: 1.0.0-M4

Contributing

This is an experimental Spring project. Contributions are welcome! Please:

  1. Fork the repository
  2. Create a feature branch
  3. Submit a Pull Request

Team

  • Christian Tzolov
  • Dariusz Jędrzejczyk

Links

License

This project is licensed under the Apache License 2.0.

About

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

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