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Java 8 SDK

v1.0.0•Developer Tools•stable

Backported Model Context Protocol SDK for Java 8

java-8mcpmcp-serverspring-mvc
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What is Java 8 SDK?

Java 8 SDK is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to backported model context protocol sdk for java 8

Backported Model Context Protocol SDK for Java 8

This server falls under the Developer Tools category on MCPgee, the world's largest MCP server directory with 33,000+ servers.

Features

  • Backported Model Context Protocol SDK for Java 8

Use Cases

Build MCP servers using Java 8 backported SDK
Enable Spring MVC and enterprise Java integration
krrr

Maintainer

LicenseMIT
Languagejava
Versionv1.0.0
UpdatedApr 8, 2026
Statushealthy
Maintenanceactive

Works with

ClaudeOpenAIwindowsmacoslinux
View SourceBrowse All Servers

Installation

Manual Installation

npx mcp-java8-sdk

Configuration

Configuration Details

Config File

claude_desktop_config.json

Performance

Response Metrics

Response Time< 200ms
ThroughputMedium

Resource Usage

Memory UsageLow
CPU UsageLow

How to Set Up and Use Java 8 SDK

The MCP Java 8 SDK is a backport of the official Model Context Protocol Java SDK (v0.8.1) that restores compatibility with Java 8, Spring Boot 2.x, and Solon 3.x. The official SDK requires Java 17+, making it unusable in legacy enterprise environments; this project downgrades the dependency chain so that teams on older Java runtimes or Spring Boot 2 can build MCP servers and clients without upgrading their platform. It ships as a multi-module Maven project with modules for the core SDK, Spring MVC integration (mcp-spring), Solon integration (mcp-solon), and a test harness (mcp-test).

Prerequisites

  • Java 8 or later (JDK, not just JRE) installed
  • Maven 3.6 or later (or use the included ./mvnw wrapper)
  • Spring Boot 2.x project if using the mcp-spring module, or Solon 3.x if using mcp-solon
  • An MCP client (Claude Desktop, Claude Code, etc.) to connect to the MCP server you build
1

Clone the repository

Clone the mcp-java8-sdk repository to get the source code and Maven wrapper.

git clone https://github.com/krrr/mcp-java8-sdk.git
cd mcp-java8-sdk
2

Build the SDK modules

Use the Maven wrapper to build all modules and install them into your local Maven repository so your own projects can depend on them.

./mvnw clean install -DskipTests
3

Add the SDK as a Maven dependency

In your own Java project's pom.xml, add the core SDK dependency. Replace the version with the latest from the repository (currently 0.8.1).

<dependency>
  <groupId>io.modelcontextprotocol.sdk.j8</groupId>
  <artifactId>mcp</artifactId>
  <version>0.8.1</version>
</dependency>

<!-- For Spring Boot 2.x integration: -->
<dependency>
  <groupId>io.modelcontextprotocol.sdk.j8</groupId>
  <artifactId>mcp-spring</artifactId>
  <version>0.8.1</version>
</dependency>
4

Use the BOM for dependency management

Import the mcp-bom artifact in your dependencyManagement section to align all SDK module versions automatically.

<dependencyManagement>
  <dependencies>
    <dependency>
      <groupId>io.modelcontextprotocol.sdk.j8</groupId>
      <artifactId>mcp-bom</artifactId>
      <version>0.8.1</version>
      <type>pom</type>
      <scope>import</scope>
    </dependency>
  </dependencies>
</dependencyManagement>
5

Implement and expose your MCP server

Use the SDK's server builder APIs (same interface as the official SDK) to define tools and resources, then expose the server via stdio or HTTP transport. Refer to the mcp-test module for working examples.

Java 8 SDK Examples

Client configuration

Once your Java 8 MCP server is built and packaged as an executable JAR, configure your MCP client to launch it via stdio transport.

{
  "mcpServers": {
    "my-java8-server": {
      "command": "java",
      "args": ["-jar", "/path/to/your-mcp-server.jar"]
    }
  }
}

Maven dependency snippet

Minimal pom.xml additions to use the Java 8 MCP SDK in a Spring Boot 2.x project.

<!-- In pom.xml dependencyManagement -->
<dependency>
  <groupId>io.modelcontextprotocol.sdk.j8</groupId>
  <artifactId>mcp-bom</artifactId>
  <version>0.8.1</version>
  <type>pom</type>
  <scope>import</scope>
</dependency>

<!-- In pom.xml dependencies -->
<dependency>
  <groupId>io.modelcontextprotocol.sdk.j8</groupId>
  <artifactId>mcp-spring</artifactId>
</dependency>

Troubleshooting Java 8 SDK

Build fails with 'unsupported class file major version' errors.

Ensure you are building with a Java 8 JDK, not a newer JDK with --release 8. The Maven compiler properties in pom.xml set source and target to 8, but the compiler itself must be Java 8 compatible. Check with 'java -version' and 'mvn -version'.

Dependency resolution fails because artifacts are not in Maven Central.

The SDK must be built and installed locally first with './mvnw clean install'. The groupId io.modelcontextprotocol.sdk.j8 is not published to Maven Central — it lives only in your local ~/.m2 repository after the local install step.

Spring Boot 2.x auto-configuration conflicts with the mcp-spring module.

Check the migration guide (migration-0.8.0.md) in the repository for any breaking changes from the upstream SDK. Exclude conflicting auto-configuration classes in your @SpringBootApplication annotation if needed, and ensure your Spring Boot version matches 2.x (not 3.x).

Frequently Asked Questions about Java 8 SDK

What is Java 8 SDK?

Java 8 SDK is a Model Context Protocol (MCP) server that backported model context protocol sdk for java 8 It connects AI assistants to external tools and data sources through a standardized interface.

How do I install Java 8 SDK?

Follow the installation instructions on the Java 8 SDK GitHub repository. Clone the repo, install dependencies, and add the server config to your AI client.

Which AI clients work with Java 8 SDK?

Java 8 SDK works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.

Is Java 8 SDK free to use?

Yes, Java 8 SDK is open source and available under the MIT license. You can use it freely in both personal and commercial projects.

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Quick Config Preview

{ "mcpServers": { "mcp-java8-sdk": { "command": "npx", "args": ["-y", "mcp-java8-sdk"] } } }

Add this to your claude_desktop_config.json or .cursor/mcp.json

Read the full setup guide →

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