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# `@assistant-ui/react-a2a`
[A2A (Agent-to-Agent) v1.0](https://github.com/a2aproject/A2A) protocol integration for `@assistant-ui/react`. Built-in HTTP client with SSE streaming, agent-card discovery, multi-tenancy, and structured error handling.
## Installation
```bash
npm install @assistant-ui/react @assistant-ui/react-a2a
```
## Usage
```tsx
import { AssistantRuntimeProvider } from "@assistant-ui/react";
import { useA2ARuntime } from "@assistant-ui/react-a2a";
import { Thread } from "@/components/assistant-ui/thread";
export function App() {
const runtime = useA2ARuntime({ baseUrl: "http://localhost:9999" });
return (
<AssistantRuntimeProvider runtime={runtime}>
<Thread />
</AssistantRuntimeProvider>
);
}
```
Supports all 9 A2A task states (including `input_required` and `auth_required`), artifact streaming, push-notification config, extension negotiation, and streaming/non-streaming auto-fallback.
## See also
- `@assistant-ui/react-ag-ui` for the AG-UI protocol.
- `@assistant-ui/react-langgraph` for LangGraph agents.
Full reference at [assistant-ui.com/docs/runtimes/a2a](https://www.assistant-ui.com/docs/runtimes/a2a/overview).