MCP Java SDK

MCP Java SDK is a Java software development kit that provides standardized integration between AI models and tools.

The MCP Java SDK enables developers to build Model Context Protocol clients and servers in Java. It provides protocol version compatibility negotiation, tools discovery and execution, resource management with URI templates, and prompt handling. The SDK supports sampling, elicitation, argument completions, progress tracking, and structured logging. It includes default transport implementations such as STDIO, Java HttpClient-based SSE, and streamable HTTP without requiring external web frameworks. Additionally, it offers pluggable JSON serialization and pluggable authorization hooks for server security.

MCP Java SDK at a glance

Best for: Software engineer
Pricing: Free
Released: January 2025
Category: AI coding tool
Website: java.sdk.modelcontextprotocol.io

Key features

MCP Client and Server implementations
Protocol version compatibility negotiation
Tools discovery and execution
Resources management with URI templates
Prompts handling and management
Sampling support for AI model interactions
STDIO and SSE transport implementations
Pluggable JSON serialization with Jackson

Use it for

Build MCP clients in Java
Implement MCP servers in Java
Manage AI tool discovery and execution
Handle prompts and resources with URI templates

Alternatives to MCP Java SDK

MCP Python SDK — Builds protocol servers and clients using standard Python type hints.
MCP TypeScript SDK — Official TypeScript implementation of the Model Context Protocol.
MCP C# SDK — Official C# implementation for the Model Context Protocol.
AWS MCP Servers — Provides real-time access to official AWS documentation and infrastructure tools.
MCP Rust SDK — Build official Model Context Protocol servers and clients in Rust.
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Spec Workflow MCP — It brings sequential spec creation and real-time tracking to your AI workflow.
jCodeMunch MCP — Cuts AI code-reading token costs by over 95 percent via tree-sitter symbol indexing.
FastMCP — The standard framework for building Model Context Protocol servers and clients.
MCP Toolbox for Databases — Connects AI agents to diverse enterprise databases with built-in security and observability.
MCP Server Finder — It provides a comprehensive directory with detailed profiles and compatibility matrices.
JADX AI MCP — Connects JADX directly to LLMs for live reverse engineering and code review.

All MCP Java SDK alternatives