# WebSocket /v1/medical/stream

Part of the HebrewCore documentation. Web: https://hc.itsbaba.com/docs#medical-stream · Whole docs: https://hc.itsbaba.com/docs.md · Index: https://hc.itsbaba.com/llms.txt

`GET /v1/medical/stream` (WebSocket upgrade)

For an answer your model is still generating. Send the English as it arrives; each Hebrew sentence comes back as soon as it is verified, typically about 2–3 seconds after the English sentence completes. Authenticate with the `Authorization` header on the upgrade request.

| Message | Direction | Meaning |
| --- | --- | --- |
| `{"type":"start", …options}` | → | First message. Takes every option of `/v1/medical/translate` except `text`. |
| `{"type":"delta","text":"…"}` | → | The next piece of English. Any size, in order. Up to 100,000 characters per session. |
| `{"type":"end"}` | → | No more English. The rest is flushed. |
| `{"type":"ready"}` | ← | Options accepted. |
| `{"type":"segment", …}` | ← | One sentence, the same shape as a `segments[]` entry, strictly in order. |
| `{"type":"done","stats","usage"}` | ← | Everything delivered. The socket then closes with code 1000. |
| `{"type":"error","error":{type,message}}` | ← | The session stops and the socket closes. `quota_exceeded` closes with 1008. |

```js
// Server-side only. Pipes your model's English answer through HebrewCore
// and shows each verified Hebrew sentence as soon as it is ready.
import OpenAI from "openai";

const ws = new WebSocket("wss://hc.itsbaba.com/v1/medical/stream", {
  headers: { Authorization: `Bearer ${process.env.HEBREWCORE_MEDICAL_KEY}` },
});
await new Promise((r) => ws.addEventListener("open", r));

ws.addEventListener("message", (e) => {
  const msg = JSON.parse(e.data);
  if (msg.type === "segment") sendToUser(msg.prefix + msg.text + msg.suffix, msg.status);
  if (msg.type === "error") handleError(msg.error);
  if (msg.type === "done") finish(msg.stats);
});

ws.send(JSON.stringify({
  type: "start",
  audience: "patient",
  reader_gender: "male",
  protected_terms: patient.medications,   // from your record search
  redact_terms: [patient.fullName],
}));

const stream = await new OpenAI().chat.completions.create({ model, messages, stream: true });
for await (const chunk of stream) {
  const delta = chunk.choices[0]?.delta?.content;
  if (delta) ws.send(JSON.stringify({ type: "delta", text: delta }));
}
ws.send(JSON.stringify({ type: "end" }));
```

Characters are charged per sentence as it starts, so a session that hits the quota stops exactly there. A session idle for 60 seconds is closed.