Scaling AI Agent Infrastructure with MCP Stateless Updates

Google has announced updates to the Model Context Protocol (MCP) that remove transportlevel session management and make the protocol fully stateless. The company says the new 20260728 specification is designed to help MCP scale more easily across cloudnative infrastructure and loadbalanced environments. The update replaces the old sessionbased handshake with selfcontained requests that carry protocol version, client information, and capabilities in each call. Google says this should improve routing, failover, and serverless deployment, while reducing the need for sticky sessions, Redisbased session storage, and deep packet inspection. The post also describes related changes for caching, multistep interactions, longrunning tasks, security boundaries, and deprecations. Google says beta support is already available in several SDKs, including TypeScript, Python, Go, and C, and encourages developers to test the new spec in staging environments.