Tool UI is a React framework for conversation-native UIs. Tools return JSON, and Tool UI renders it as inline, narrated, referenceable surfaces inside messages, optimized for chat width and scroll. It’s schema-first: every surface is driven by a serializable schema with stable IDs, so results stay consistent and reusable.
It’s assistant-anchored and stack-agnostic, working with any LLM/provider and orchestration layer. If you’re building agents, it’s a clean bridge from tool outputs to real product UX.
tool-ui.com/
0:13