alt Hacker NewsMCP's key innovation isn't the format but its unidirectional, stateless design pattern that makes it fundamentally easier to implement than bidirectional protocols like OpenAPI, which is why it's gaining traction as a universal connector beyond just LLM contexts.
I really don't know where you're coming from with that statement.
1. No one asserted that MCP's key innovation was its format. In fact, what I strongly, almost explicitly implied with my previous comment is that MCP has made no key innovations beyond its marketing system (which does matter and has forced a lot of companies who would never have operated in this space to make an MCP system, and that is good. I like MCP.).
2. MCP is fundamentally bidirectional, not unidirectional. Its a schematized request-response protocol that defines a ton of the same primitives that OpenAPI defines, like available RPC methods, authorization, request parameters, and response schemas [1]. Of course, OpenAPI goes beyond that into HTTP-specific characteristics like status codes, and MCP goes beyond that into LLM-specific characteristics like a prompt catalogue.
3. I'm not aware of any problem domain outside of LLMs that is adopting MCP. In fact, its adoption even within the world of LLMs has been lackluster at best [2].
[1] https://modelcontextprotocol.io/docs/learn/architecture#data...
[2] https://modelcontextprotocol.io/clients