MCP Stateless Updates: Scaling AI Agent Infrastructure

The Model Context Protocol, or MCP, now has a new specification release candidate, dated 2026-07-28, which removes transport-level session management. This makes the protocol core stateless. What's interesting is this change allows MCP to scale on standard HTTP load-balanced infrastructure. The original protocol, introduced in late 2024, was session-oriented and required persistent state, which created bottlenecks for cloud-native deployments. Google, working with Hugging Face and other partners, led the effort to decouple the protocol from these stateful transport constraints. The new specification means the handshake and session ID are gone. Instead, every request is self-describing, with details like protocol version and client capabilities included in a meta field on each request. This is the biggest change to the MCP specification since its launch. The bottom line is this update provides more scale and security, making it ready for real-world enterprise use.