Amazon Bedrock AgentCore Runtime Adds Support for AG-UI Protocol

AgentCore Runtime advances AI agent interactivity by enabling real-time user interface communication via AG-UI.

By Oliver Grant · Editorial pseudonym · 2026-03-13 · 1 min read

AI-ASSISTED REPORTING · RETROSPECTIVE ARCHIVE

Retrospective edition: 2026-03-13. Source published: 2026-03-13. Added to this archive: 2026-11-03. This briefing was prepared later from the linked announcement; it was not published on this website on the historical edition date.

Amazon Bedrock AgentCore Runtime incorporated support for the Agent-User Interaction (AG-UI) protocol, allowing developers to deploy servers that provide dynamic, real-time AI agent experiences in user-facing applications. AG-UI supports streaming text, reasoning steps, tool outputs, and synchronizes agent state with UI elements, enhancing responsiveness and transparency.

The protocol complements existing communication standards in AgentCore Runtime, facilitating bidirectional interaction through Server-Sent Events and WebSocket transports. Support is deployed across 14 AWS regions, broadening availability. This update focuses on developer enabling tools for interactive agent frontends rather than on new AI model capabilities.

Source & further reading

Amazon Bedrock AgentCore Runtime now supports the AG-UI protocol ↗

Source published 2026-03-13. This report was prepared with AI assistance from the linked primary-source material. Claims and limitations should be checked against the original announcement or research.