I've been building on the Model Context Protocol for a while, and the 2026-07-28 revision did something that looked tiny in the changelog and turned out to reshape how you write a server. It deleted the handshake. No more initialize .
Source: [Dev.to](https://dev.to/seek3r/mcp-deleted-the-handshake-and-thats-harder-than-it-sounds-b5h)