> ## Documentation Index
> Fetch the complete documentation index at: https://docs.apowerb.com/llms.txt
> Use this file to discover all available pages before exploring further.

# SSE streaming

> Three server-sent event channels.

| Channel        | Endpoint                         | Events                            |
| -------------- | -------------------------------- | --------------------------------- |
| Agent response | `POST /api/adk/run_sse`          | Token-by-token output             |
| RAG progress   | `GET /api/rag/stream/{agent_id}` | `connected`, `status`, `complete` |
| Notifications  | `GET /api/notifications/stream`  | Real-time user notifications      |

## Consuming a stream

```js theme={null}
const res = await fetch("/api/adk/run_sse", {
  method: "POST",
  headers: {
    "Content-Type": "application/json",
    Authorization: `Bearer ${token}`,
  },
  body: JSON.stringify(payload),
});

const reader = res.body.getReader();
const decoder = new TextDecoder();

while (true) {
  const { done, value } = await reader.read();
  if (done) break;
  for (const line of decoder.decode(value).split("\n")) {
    if (line.startsWith("data: ")) {
      handle(JSON.parse(line.slice(6)));
    }
  }
}
```

<Note>
  Chunks do not align with event boundaries. Buffer the decoded text and split on
  newlines across reads rather than parsing each chunk on its own.
</Note>


## Related topics

- [Run Agent Sse](/api-reference/adk/run-agent-sse.md)
- [Introduction](/index.md)
- [Sessions and runs](/concepts/sessions-and-runs.md)
- [Rag Stream](/api-reference/rag/rag-stream.md)