A safe way for AI to build UIs your app can render
A2UI is an open protocol by Google enabling agents to generate rich, interactive UIs. Instead of risky code execution, agents send declarative JSON that clients render natively (Flutter/Web/Mobile). Secure, framework-agnostic, and designed for LLMs.
A2UI tackles the specific problem of safely sending UI components across trust boundaries. We have already seen this concept in action with Gemini's Visual Layout, which inspired this protocol, and it is now powering Gemini Enterprise and Opal.
But protocols are only useful when they connect things.
The team at @CopilotKit (making @AG-UI ) has a great tutorial showing how to bring this stack to life. It demonstrates connecting an @A2A Protocol backend speaking A2UI directly to the frontend. It really shows how you can deliver a full-stack agentic experience where the UI is just as dynamic as the conversation.
About A2UI on Product Hunt
“A safe way for AI to build UIs your app can render”
A2UI launched on Product Hunt on December 24th, 2025 and earned 265 upvotes and 4 comments, placing #4 on the daily leaderboard. A2UI is an open protocol by Google enabling agents to generate rich, interactive UIs. Instead of risky code execution, agents send declarative JSON that clients render natively (Flutter/Web/Mobile). Secure, framework-agnostic, and designed for LLMs.
On the analytics side, A2UI competes within Open Source, User Experience, Artificial Intelligence and GitHub — topics that collectively have 940.3k followers on Product Hunt. The dashboard above tracks how A2UI performed against the three products that launched closest to it on the same day.
Who hunted A2UI?
A2UI was hunted by Zac Zuo. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Zac Zuo
Hi everyone!
A2UI tackles the specific problem of safely sending UI components across trust boundaries. We have already seen this concept in action with Gemini's Visual Layout, which inspired this protocol, and it is now powering Gemini Enterprise and Opal.
But protocols are only useful when they connect things.
The team at @CopilotKit (making @AG-UI ) has a great tutorial showing how to bring this stack to life. It demonstrates connecting an @A2A Protocol backend speaking A2UI directly to the frontend. It really shows how you can deliver a full-stack agentic experience where the UI is just as dynamic as the conversation.