# `POST /serper/images`

Protected. Requires a valid session cookie (`credentials: 'include'`).

Search images via Serper.dev and stream WebP thumbnails (SSE)

Queries Google Image search via `https://google.serper.dev/images` using the
company setting `keys.serper`, and streams the
results via Server-Sent Events (`text/event-stream`).

1. First emits an `images` event with the full search result list (including `imageUrl`).
2. Then streams `thumb` events with WebP base64 thumbnails (max 200×200) as they are generated.
3. Emits `done` when all thumbnails have completed (or `error` on failure).


## Body (JSON)

| Field | Required | Type | Description |
|-------|----------|------|-------------|
| `q` | yes | string | Image search query (e.g. "Purize logo") |
| `gl` | no | string | Country code |
| `hl` | no | string | Language code |
| `num` | no | integer | Number of search results to fetch |
| `preferSource` | no | boolean | Whether to prefer downloading from the full imageUrl before falling back to Google thumbnailUrl |

```json
{
  "q": "Purize logo",
  "gl": "de",
  "hl": "de",
  "num": 100
}
```

## SSE Events

The response is a `text/event-stream`. Events are emitted in order until the stream closes.

| Event | Description | Payload |
|-------|-------------|---------|
| `images` | First event; list of search result images with id, url, width, and height | `{ "images": [ { "id": 0, "url": "…", "width": 1000, "height": 800 } ] }` |
| `thumb` | Emitted for each image as its 200×200 max WebP thumbnail is generated | `{ "id": 0, "dataUrl": "data:image/webp;base64,…" }` |
| `done` | Emitted after all thumbnails have finished streaming; closes the SSE stream | `{ "total": 100 }` |
| `error` | Emitted when an error occurs during Serper request or processing | `{ "error": "…" }` |

## Response `200`

`text/event-stream` — emits `images`, `thumb`, `done` (and `error` on failure).


## Errors

| Status | Description |
|--------|-------------|
| 400 | Query missing, invalid input, or Serper API key not configured — `{"error":"…"}` |
| 401 | Unauthorized — `{"error":"…"}` |
| 403 | Not authorized — `{"error":"…"}` |
| 404 | Company not found — `{"error":"…"}` |

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