SmallRye MCP

"Model Context Protocol (MCP) is an open protocol that enables seamless integration between LLM applications and external data sources and tools."

This extension define a declarative APIs that enable developers to implement the MCP server features easily.

Example of usage

Add server features (prompts, resources and tools) represented by annotated business methods of beans.

public class ServerFeatures {

    @Inject
    CodeService codeService;

    @Tool(description = "Converts the string value to lower case")
    String toLowerCase(String value) {
        return value.toLowerCase();
    }

    @Prompt(name = "code_assist")
    PromptMessage codeAssist(@PromptArg(name = "lang") String language) {
        return PromptMessage.withUserRole(new TextContent(codeService.assist(language)));
    }

    @Resource(uri = "file:///project/alpha")
    BlobResourceContents alpha(RequestUri uri) throws IOException{
        return BlobResourceContents.create(uri.value(), Files.readAllBytes(Paths.ALPHA));
    }

}

History

This is a copy (with some modifications) from the API defined in https://github.com/quarkiverse/quarkus-mcp-server/tree/main/core/runtime/src/main/java/io/quarkiverse/mcp/server.