How AgentCore Gateway supports the MCP 2026-07-28 spec
MCP's 2026-07-28 spec makes the protocol stateless, enabling standard HTTP horizontal scaling for enterprise agents
“remote MCP servers effectively become standard HTTPS endpoints, which scale cleanly with enterprise workloads”
The Model Context Protocol released its largest-ever revision on 2026-07-28, transitioning from a stateful session-pinned model to a fully stateless protocol that runs on ordinary HTTPS infrastructure — eliminating the need for sticky load-balancer sessions or shared session stores. AWS immediately shipped support in AgentCore Gateway as an opt-in version field, preserving backward compatibility for existing clients. This is a foundational infrastructure shift that removes a key scaling bottleneck for enterprise AI agent deployments.