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java-sdk
The official Java SDK for Model Context Protocol servers and clients. Maintained in collaboration with Spring AI
3.5kstars
893forks
Java
Quality signals
ActiveNo testsNo CIThin docsNo licensePopular
AI summary
Auto-generated overview of what this skill does and when to reach for it.
Java library to build or connect to AI agents via the Model Context Protocol (MCP) standard.
Use this when
- Need to expose Java functions as AI-accessible tools via MCP
- Building an AI agent that calls external MCP servers
- Integrating MCP into a Spring Boot application
- Running MCP over stdio, SSE, or HTTP transports
- Validating MCP conformance for Java implementations
Don't use when
- Only need simple REST APIs for AI tools (use plain Spring Web instead)
- Working in Python/Node.js (use their MCP SDKs instead)
- Don’t need MCP’s tool/resource/prompt model
Capabilities
- Implements MCP client/server transports (stdio, SSE, HTTP)
- Provides reactive and blocking APIs for async/streaming MCP calls
- Supports MCP tool/resource/prompt definitions and discovery
- Includes Jackson-based JSON serialization with pluggable backends
- Validates against MCP conformance test suite
- Offers Spring Boot starters for rapid MCP integration
Install
Universal installANY TOOL
$ npx skillcity@latest modelcontextprotocol/java-sdkAuto-detects the skill or MCP server in this repo and installs it for Claude Code, Codex, Cursor or Cline.
Requires Node.js 18+ (ships with npx).
Prefer to set it up by hand? Clone the repository:
git clone https://github.com/modelcontextprotocol/java-sdk.git
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