It isn't. MCP over streamable HTTP is just JSON RPC payload over HTTP. The internal interface for the ChatGPT app and Coded are all MCP based (stdio on local)

It isn't. MCP over streamable HTTP is just JSON RPC payload over HTTP. The internal interface for the ChatGPT app and Coded are all MCP based (stdio on local). All enterprise AI rollout is eventually going to converge on MCP as a key piece of that infra because it can mask credentials behind one gateway that's easier to control and more secure.