My understanding is that this is essentially a hub for MCP servers?

The current and potential benefits are:

- Consistent authentication mechanism for all tools.

- Ease of tool registration/deregistration.

- Tool discovery.

Main drawbacks are:

- Trusting WebMCP npm package to run on your users' computers.

- Trusting WebMCP with access to your site or platform's functionality. Kind of like OAuth?

Does this sound right? Any other pros and cons versus integrating MCP server directly with specific LLMs?

That's not how I'd describe it- it's not meant to centralize servers, it's the idea: maybe you don't need to build and distribute a separate downloadable thing for users to interact with your service/product/whatever via agent, and instead they continue to use your website via an appropriate interface for agents.

(Here's another comment with an explanation https://news.ycombinator.com/item?id=45623782)

The npm package is only there as the browser doesn't natively support the behavior (yet). Similarly MCP clients don't have built in support. So it's a bridge/proxy to demonstrate what could be done.