AG-UI 1.0: an open protocol for agent-app communication
CopilotKit's AG-UI reached a stable 1.0 release, adding metadata, subagents, interrupt and resumption, run outcomes and token usage, and forward compatibility.
Introducing AG-UI 1.0 The open protocol for how ANY agent communicates with ANY application. Now with a stable, versioned contract. Features included in 1.0: 1. Metadata - send backend data to the UI 2. Subagents - expose delegated agent work 3. Interrupts + resumption 3. Run outcomes and token usage 4. Forward compatibility Capabilities that have been part of AG-UI (streaming, tool calls, shared state, reasoning etc) are still covered. Thank you to those who shaped 1.0 🪁 Including builders at @Anthropic, @Google, @Microsoft, @Pydantic, @TanStack and more. Their feedback led directly to several critical improvements in the final release. AG-UI is built with those who build on it. 👉 Read more: https://go.copilotkit.ai/AG-UI-v1.0 The 1.0 spec will remain unchanged, while future protocol evolution will happen through new draft specifications and open community discussion, led by @CopilotKit. More details below