dummy java mcp server / published by https://github.com/dacr/code-examples-manager #f6ab2228-9d0c-48e3-8d3a-b11c46152484/e92bd567900ce32d8879b37b26fad3d9bfb02101

mcp-hello-mcp-server.sc

// summary : dummy java mcp server
// keywords : artificial-intelligence, generative-ai, llm, ai, mcp, mcp-server, @testable
// publish : gist
// authors : David Crosson
// license : Apache NON-AI License Version 2.0 (https://raw.githubusercontent.com/non-ai-licenses/non-ai-licenses/main/NON-AI-APACHE2)
// id : f6ab2228-9d0c-48e3-8d3a-b11c46152484
// created-on : 2025-07-18T15:24:45+02:00
// managed-by : https://github.com/dacr/code-examples-manager
// run-with : scala-cli $file

//> using scala 3.7.1
//> using dep org.slf4j:slf4j-api:2.0.17
//> using dep org.slf4j:slf4j-simple:2.0.17
//> using dep io.modelcontextprotocol.sdk:mcp:0.10.0

import io.modelcontextprotocol.server.McpServer
import io.modelcontextprotocol.server.transport.StdioServerTransportProvider
import io.modelcontextprotocol.spec.McpSchema.ServerCapabilities
import io.modelcontextprotocol.spec.McpServerTransportProvider

/*
{"jsonrpc":"2.0","id":0,"method":"initialize","params":{"protocolVersion": "2024-11-05"}}
{"jsonrpc":"2.0","id":1,"method":"tools/list","params":{}}
*/

object ExampleServer {
  def main(args: Array[String]): Unit = {
    val transportProvider = StdioServerTransportProvider()
    val capabilities = ServerCapabilities
      .builder()
      .resources(false, true)
      .tools(true)
      .prompts(true)
      .logging()
      .build()
    val helloServer =
      McpServer
        .sync(transportProvider)
        .serverInfo("hello-server", "1.0.0")
        .capabilities(capabilities)
        .build()

    Thread.sleep(60000)
    helloServer.close()
  }
}

ExampleServer.main(args)