AG-UI Protocol Support in Spring AI?

[anupsajjan]

Hi Spring AI team,

I'm working on Spring AI from past 1.5 years and wanted to ask whether there are any plans to support the AG-UI (Agent-User Interaction) protocol.

AG-UI is an open protocol designed to standardize communication between AI agents and frontends, typically through a structured event stream (messages, tool calls, state updates, etc.). It enables UI frameworks to interact with agents in a consistent way using streaming mechanisms like SSE or WebSockets.

Reference:

https://www.copilotkit.ai/ag-ui/
https://docs.ag-ui.com

From what I understand, AG-UI essentially provides a standard interaction layer between agent backends and UI clients, similar to how other protocols in the ecosystem focus on specific layers (e.g., tools or agent-to-agent communication).

I had a few questions:

Are there any plans or discussions about supporting the AG-UI protocol in Spring AI?
If not directly supported yet, would the maintainers consider adding an AG-UI compatible event streaming layer in the future?
If someone wanted to integrate Spring AI with an AG-UI compatible frontend today, what would be the recommended approach?

Also, if Spring AI already supports something similar or compatible with AG-UI, please let me know — I may have missed it in the documentation. Basically I want my Agent to interact with UI and make UI tool calls.

Since Spring AI is becoming a major framework for building JVM-based AI applications, having support for a standardized agent-UI protocol could make integration with modern AI frontends much easier.

Happy to contribute or experiment with an implementation if there’s interest.

Thanks!

[mfialkowski]

I used https://github.com/pascalwilbrink/spring-ai-ag-ui. It works, but it seems to be a very early version. Check https://spring.io/blog/2025/10/07/spring-ai-community-announcement. It doesn't support webflux, but apart from DTOs the whole AG-UI doesn't seem to be rocket science, and probably you can try to implement it on your own.