uMCP (ultraMCP)

- Java 17 or higher
- Gradle 8.5+ (for building from source)

<dependency> <groupId>org.gegolabs</groupId> <artifactId>uMCP</artifactId> <version>1.0.0</version> </dependency>

implementation 'org.gegolabs:uMCP:1.0.0'

Note: Currently available in Maven Local. Run./gradlew publishToMavenLocalafter cloning.

# Clone the repository git clone https://github.com/cobach/uMCP.git cd uMCP # Build and install to local Maven repository ./gradlew publishToMavenLocal # Run tests ./gradlew test

Tools in uMCP implement theSyncCapabilityorAsyncCapabilityinterface:

@Name("my-tool") @Description("Description of what my tool does") public class MyTool implements SyncCapability<MyInput, MyOutput> { @Override public void initialize() throws CapabilityException { // Initialize resources if needed } @Override public void shutdown() throws CapabilityException { // Clean up resources if needed } @Override public MyOutput execute(MyInput input) throws CapabilityException { // Tool implementation return new MyOutput(result); } }

uMCP servers always use TCP transport. You can configure the host and port:

// Default: localhost:3000 MCPServer server = MCPServer.builder() .name("MyServer") .version("1.0.0") .tool(new MyTool()) .build(); // Custom port MCPServer server = MCPServer.builder() .name("MyServer") .version("1.0.0") .port(8080) .tool(new MyTool()) .build(); // Custom host and port MCPServer server = MCPServer.builder() .name("MyServer") .version("1.0.0") .host("0.0.0.0") .port(8080) .tool(new MyTool()) .tool(new AnotherTool()) .build(); // Start the server server.start();

After building your MCP server, you need to configure Claude Desktop to connect to it. The mcp-java-bridge JAR includes a CLI installer for this purpose.

When using uMCP, the bridge JAR is automatically included as a dependency. You can access it in two ways:

java -jar ~/.m2/repository/org/gegolabs/mcp/mcp-java-bridge/1.0.0/mcp-java-bridge-1.0.0.jar

task copyBridgeJar(type: Copy) { from configurations.runtimeClasspath.filter { it.name.contains('mcp-java-bridge') } into 'install' rename { 'mcp-bridge.jar' } }

Option A: Interactive Installation (Recommended)

Run the installer without arguments for a guided setup:

- Auto-detect the JAR location
- Prompt for server name (e.g., "my-server")
- Prompt for host (default: localhost)
- Prompt for port (default: 3000)
- Automatically configure Claude Desktop
- Create a backup of existing configuration

For automated setups, use specific parameters:

java -jar mcp-java-bridge-1.0.0.jar install \ -n "my-server" \ -c mcp-java-bridge-1.0.0.jar \ -h localhost \ -p 3000

- -n- Server name in Claude Desktop (required)
- -c- Path to the JAR that will act as connector
- -h- Server host (default: localhost)
- -p- Server port (default: 3000)

If you prefer to configure manually, edit~/Library/Application Support/Claude/claude_desktop_config.json:

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