rest-mcp-server

SpringBoot-MCP

A zero-configuration tool for automatically exposing Spring Boot endpoints as Model Context Protocol (MCP) tools.

Features

• Direct integration - Mount an MCP server directly to your Spring Boot application with zero configuration
• Automatic discovery of all Spring REST endpoints and conversion to MCP tools
• Preserving schemas of your request and response models

Installation

Add the dependency to your Maven pom.xml:

<dependency>
    <groupId>com.github.imthath-m</groupId>
    <artifactId>rest-mcp-server</artifactId>
    <version>0.2.1</version>
</dependency>

Currently, SpringBoot-MCP is not available on Maven central repository. So you have to add the following respoistory in pom.xml, to ensure JitPack serves it directly from GitHub.

<repositories>
    <repository>
        <id>jitpack.io</id>
        <url>https://jitpack.io</url>
    </repository>
</repositories>

Basic Usage

After adding the dependency, you need to remove the following starter web dependency from your pom.xml file.

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>

This step is required because, this package depends on spring-ai-starter-mcp-server-webflux which already does the basic setup with a Netty server.

That's it! Your auto-generated MCP server is now available at https://localhost:8080/sse. You can configure this and other features of the MCP server by using variables specified here.

Once you run the app, you should see the following line your console.

o.s.a.m.s.a.McpServerAutoConfiguration   : Registered tools: <number of endpoints>, notification: true

FYI, The REST endpoints in your service will continue to be available in the respective paths.

Tool Naming

SpringBoot-MCP uses the method names from your REST Controllers as the MCP tool names.

Connecting to the MCP Server

Once your Spring Boot app with MCP integration is running, you can connect to it with any MCP client supporting SSE or stdio protocols.

Using SSE (e.g., with Cursor)

1. Run your Spring Boot application
2. In Cursor -> Settings -> MCP -> Add new MCP server, use the URL http://localhost:8080/sse as SSE endpoint
3. Cursor will discover all available tools automatically

Example cursor config file named mcp.json.

{
    "mcpServers": {
      "server-name": {
        "url": "http://localhost:8080/sse"
      }
    }
}

Development and Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

Requirements

• Java 21 or higher
• Spring Boot 3.x

License

MIT License. Copyright (c) 2025. Mohammed Imthathullah.