Comment by brookst

I agree that having auth outside of context window is good.

But the real value of MCP is adding a semantic layer on top of APIs. Skills are client side and don’t know the server’s capabilities. MCP lets the server explain its API in natural language so clients who have no prior knowledge of the server, it’s API, or its domain can use it intelligently.

I used to think MCP was dumb. I’ve written to large MCP servers, one for CAD and one for music, and I am a complete convert.