You joke, but with the right prompt, I am almost certain that an LLM would've written a better spec than MCP. Like others said, there are many protocols that can be used as inspiration for what MCP tries to achieve, so LLMs should "know" how it should be done... which is definitely NOT by using SSE and a freaking separate "write" endpoint.
That's LLM in a nutshell though. A naive prompt + taking the first output = high probability of garbage. A thoughtful prompt informed by subject matter expertise + evaluating, considering, and iterating on output = better than human-alone.
But the pre-knowledge and creative curation are key components of reliable utility.
