[Extension Proposal] Model Context Protocol (MCP) server

[mkouba]

Description

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

In this extension, we would like to provide a declarative API that enables developers to implement MCP server features easily.

For example, an exposed prompt template could be implemented as a business method of a CDI bean:

public class MyPrompts {

    @Inject
    FooService fooService;

    @Prompt(description = "Not much we can say here.") // prompt name is derived from the method name, desc is optional
    PromptMessage foo(@PromptArg(description = "The name") String name) { // @PromptArg is optional
        return new PromptMessage("user", new TextContent(fooService.ping(name)));
    }

}

Repository name

quarkus-mcp-server

Short description

This extension enables developers to implement the MCP server features easily.

Repository Homepage URL

https://docs.quarkiverse.io/quarkus-mcp-server/dev/

Repository Topics

• quarkus-extension

...

Team Members

• @mkouba

Additional context

No response

[quarkus-bot]

/cc @aloubyansky (extension-proposal), @gastaldi (extension-proposal), @gsmet (extension-proposal), @maxandersen (extension-proposal)

[geoand]

🎉

[jmartisk]

I assume you plan to support the HTTP/SSE transport? Or also stdio transport (that may get tricky because Quarkus prints a lot of stuff to stdout, so we would have to turn all logging off I guess)

[mkouba]

I assume you plan to support the HTTP/SSE transport? Or also stdio transport (that may get tricky because Quarkus prints a lot of stuff to stdout, so we would have to turn all logging off I guess)

Good question. Yes, only HTTP/SSE transport at the moment.

[mkouba]

@gastaldi thanks!