After recently learning about MCP from HN, I started working on some demos. I jotted down my thoughts about my developer experience and potential room for improvement.
Do you have a link to the spec where they cover this use case?
Why is callback in OpenAPI not sufficient for this?
I think OpenAPI callback would certainly work but the client application must support this. For e.g. I don’t think ChatGPT supports callbacks (I might be wrong).
Broadly speaking I am agreed with you that OpenAPI can replicate much of the functionality of MCP, but what’s missing is the opinionated contract between client and server (similar to LSPs)
That makes it more of a DSL on a protocol (json-rpc) than a protocol itself
If you want to implement notifications without callbacks, you either (1) use an always connected session and pass messages or (2) have the client poll an endpoint
As an MCP fan, am curious! Care to share. Link maybe? Or even just a comment would be great!