Amazon Bedrock AgentCore Gateway now supports the 2026-07-28 Model Context Protocol specification, a major update to the protocol used to connect AI systems with tools.
The MCP revision makes the protocol stateless, introduces a governed extension system, and hardens authorization. AWS says developers can enable the new version on AgentCore Gateway with a single UpdateGateway call.
Stateless operation matters because it can simplify scaling and reduce assumptions about long-lived sessions. Governed extensions give the ecosystem a more orderly way to add capabilities, while stronger authorization addresses one of the central risks in agent systems: models gaining access to tools they should not use.
For teams building on Bedrock, the update is mostly infrastructure plumbing. But it reflects the speed at which agent protocols are changing. Production users need to track those changes because protocol defaults can shape both security posture and developer workflow.