AG-UI and A2UI Explained: How the Emerging Agentic Stack Fits Together

CopilotKit is actively shaping the evolving landscape of agent-driven applications by collaborating with Google on the A2UI protocol, which will soon be fully supported within their framework. This ecosystem features three foundational open protocols: AG-UI, MCP, and A2A, each addressing distinct layers of the agentic stack. AG-UI serves as the crucial runtime layer facilitating seamless communication between agentic frontends and backends, while A2UI focuses on the declarative generative UI aspect. CopilotKit is positioned as the comprehensive framework for developers, integrating these protocols to build agentic applications with robust support for generative UI, multi-agent interactions, and custom integrations. By doing so, it aims to play a pivotal role in advancing the interoperability and development of next-generation agentic applications, similar to how React revolutionized component-based UIs.

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