# MCP Java SDK — Model Context Protocol for Java (2026)

> MCP Java SDK brings Model Context Protocol to Java 17+; verified 3,412★ with Maven Central artifacts, Spring AI docs, and server conformance 40/40.

## Install

Merge the JSON below into your `.mcp.json`:

## Quick Use

```bash
git clone https://github.com/modelcontextprotocol/java-sdk.git
cd java-sdk
./mvnw clean install -DskipTests
# optional: see docs for client/server quickstarts
```

## Intro

MCP Java SDK brings Model Context Protocol to Java 17+; verified 3,412★ with Maven Central artifacts, Spring AI docs, and server conformance 40/40.

**Best for:** Java teams implementing MCP clients/servers or validating a Java MCP stack against conformance suites

**Works with:** Java 17+, Maven/Gradle, Docker + npx for test suites, and Spring AI integrations

**Setup time:** 10-20 minutes

## Main

- The repo is structured as a Java SDK (client + server) with reference documentation and links to dedicated quickstarts for dependencies and BOM usage.
- For correctness, it documents conformance testing via the official MCP conformance suite (0.1.15) and shows explicit pass/fail counts for server/client/auth scenarios.
- If you are a Spring shop, the README points directly at Spring AI MCP docs (boot starters, annotations, security), so you can choose plain Java or Spring-native paths.
- A practical rollout pattern: start by running the server conformance sample locally, then wire your own transports and auth once you can reproduce the baseline results.

### FAQ

- **Do I need Docker and npx?**: Only for running the test and conformance workflows the README describes; using the SDK in your app is just normal Java dependencies.
- **What is the fastest way to validate my stack?**: Run the included conformance modules, then run the official `@modelcontextprotocol/conformance` suite against the local endpoint.
- **Why publish this on TokRepo?**: It is a reference Java implementation with explicit conformance data, which helps teams avoid “it works on my machine” MCP drift.

## Source & Thanks

> Source: https://github.com/modelcontextprotocol/java-sdk
> License: MIT
> GitHub stars: 3412 · forks: 878

---

<!-- ZH -->

## Quick Use

```bash
git clone https://github.com/modelcontextprotocol/java-sdk.git
cd java-sdk
./mvnw clean install -DskipTests
# optional: see docs for client/server quickstarts
```

## Intro

MCP Java SDK 把 Model Context Protocol 带到 Java 17+；已核验 3,412★，提供 Maven Central 依赖、Spring AI 文档与 Server conformance 40/40。

**Best for:** 需要实现 MCP client/server，或希望用一致性测试验证 Java MCP 能力的团队

**Works with:** Java 17+、Maven/Gradle、用于测试的 Docker + npx，以及 Spring AI 集成

**Setup time:** 10-20 minutes

## Main

- 它提供面向 Java 的 MCP SDK（client + server）与完整参考文档，并给出依赖/BOM 的入门路径，适合落地到现有 Java 工程体系。
- 正确性维度做得很“工程化”：README 明确说明如何用官方 conformance suite（0.1.15）验证，并公开 Server/Client/Auth 的通过统计。
- 如果你在用 Spring，README 直接链接到 Spring AI MCP 文档（starter、注解、security），可以在纯 Java 与 Spring 路线之间自由选择。
- 推荐的落地顺序是：先把 server conformance 样例跑通并复现结果，再逐步接入自定义 transport 与鉴权。

### FAQ

- **一定要 Docker 和 npx 吗？**：只有在你要跑 README 提到的测试/一致性验证时才需要；把 SDK 引入业务应用本身就是常规的 Java 依赖管理。
- **最快的验证方式是什么？**：先运行仓库内的 conformance 模块，然后用官方 `@modelcontextprotocol/conformance` 套件对本地 MCP endpoint 做回归验证。
- **为什么值得收录？**：因为它是带明确 conformance 数据的 Java 参考实现，能显著降低 MCP 落地时的协议偏差与回归成本。

## Source & Thanks

> Source: https://github.com/modelcontextprotocol/java-sdk
> License: MIT
> GitHub stars: 3412 · forks: 878


---
Source: https://tokrepo.com/en/workflows/mcp-java-sdk-model-context-protocol-for-java-2026
Author: MCP Hub