# Bria Background Remove (image-edit)

> Bria RMBG 2.0 removes the background from one image and returns a transparent PNG at the source dimensions. It is the roasOS cut-out step before a composite.

Status: roasOS API v1.1. Catalog `model-catalog@2026-10-06.v5`, pricing `customer-pricing@2026-11-05.v15`. The endpoint `POST /v1/image-edit/bria-bg-remove` is live. `POST /v1/generations` has no `image-edit` type, so this endpoint is the only path to this model.

## Endpoint
POST https://api.roasos.com/v1/image-edit/bria-bg-remove
Auth: Authorization: Bearer roasos_sk_… (scope api:write). Idempotency-Key required. quote_only / quote_id / webhook_url as in https://docs.roasos.com/llms.txt.

## Good at
Bria RMBG 2.0 "enables seamless removal of backgrounds from images, ideal for professional editing tasks." Use it to make a transparent-background PNG of a product or a person. The output keeps the source dimensions. Bria trained the model on licensed data only, so the output is safe for commercial use. Use it before a composite step: a cut-out product image is a better `product_images` reference than a photo with a busy background. The model takes no prompt; the caller controls nothing except the source image.

## Pricing
Unit: operation. Pricing key: `bria-bg-remove`.

| request | credits |
|---|---|
| `1_image` | 1 |

Credits come from the roasOS pricing table (`MODEL_COSTS`) through the catalog. No other field changes the price.

## Modes
- `background-remove`
Provider endpoints: `fal-ai/bria/background/remove`.

## Request fields
| field | type | required | default | rule |
|---|---|---|---|---|
| `image_url` | string | yes | — | https URL; ≤ 4,096 characters |
| `quote_id` | string | no | — | UUID |
| `quote_only` | boolean | no | `false` | — |
| `wait_timeout_seconds` | integer | no | `0` | 0–60 |
| `webhook_url` | string | no | — | https URL; ≤ 4,096 characters |

The schema is strict: a field that is not in this table returns `400 unsupported_option`. Field names are the roasOS role names, one name per role across every family.

## Media
- `image_url` — first frame (or the single source image)

| role | items | max size | content types | duration |
|---|---|---|---|---|
| `image_url` | ≤ 1 | 10 MB | `image/jpeg`, `image/png`, `image/webp` | — |

- Refused: `avatar_id`, `elements`, `product_id`, `product_images`, `references`, `reference_images`, `end_image_url`, `scene_id`, `scene_image`, `video_urls`, `video_url`, `audio_urls`, `audio_url`, `voice_id`. A refused role returns `400 unsupported_option`.
- Every URL must be an immutable object on `https://cdn.roasos.com/…` that your workspace owns; any other URL is `400 reference_media_not_workspace_owned`. Upload with `POST /v1/uploads` (direct POST of the bytes to `put_url`, or a `source_url` import), then use the returned CDN URL.

## Prompt
None. The model takes no prompt. A `prompt` field returns 400 invalid_request.

## Not exposed
- `sync_mode`: not accepted by this public endpoint.

## Result
Result kind `image`. Always present: nothing. Present when the run produces it: `avatar_id`, `full_body_url`, `images`, `portrait_url`, `provider_seed`, `reference_sheet`, `url`.
```json
{ "data": { "id": "gen_…", "kind": "image", "model": "bria-bg-remove", "status": "completed", "result": {"avatar_id":"00000000-0000-4000-8000-000000000000","full_body_url":"https://cdn.roasos.com/workspaces/ws_01/full_body_url","images":["https://cdn.roasos.com/workspaces/ws_01/images-1.png"],"portrait_url":"https://cdn.roasos.com/workspaces/ws_01/portrait_url","provider_seed":0,"reference_sheet":"https://cdn.roasos.com/workspaces/ws_01/reference_sheet","url":"https://cdn.roasos.com/workspaces/ws_01/result"} } }
```
Files live on `https://cdn.roasos.com` and are immutable; a result URL can be a media input to the next call. Poll `GET /v1/jobs/{id}/status` → `{ id, status, updated_at }`, then `GET /v1/jobs/{id}/result` (`409 run_not_completed` until the job is `completed`, `failed` or `canceled`). Statuses: `queued → processing → completed | failed | canceled`.

## Example
```bash
# 1. quote — nothing is spent
curl -X POST https://api.roasos.com/v1/image-edit/bria-bg-remove \
  -H "Authorization: Bearer roasos_sk_live_…" \
  -H "Idempotency-Key: 0f1c9e2a-bria-bg-remove-0001" \
  -H "Content-Type: application/json" \
  -d '{"quote_only":true,"image_url":"https://cdn.roasos.com/workspaces/ws_01/uploads/image_url.png"}'
# → 200 { "data": { "kind": "quote", "quote_id": "q_7Hk…", "credits": 1, "expires_at": "…", "confirmation": { "model": "bria-bg-remove", "example": "1_image" } } }

# 2. run — the same body and the same Idempotency-Key, quote_id instead of quote_only
curl -X POST https://api.roasos.com/v1/image-edit/bria-bg-remove \
  -H "Authorization: Bearer roasos_sk_live_…" \
  -H "Idempotency-Key: 0f1c9e2a-bria-bg-remove-0001" \
  -H "Content-Type: application/json" \
  -d '{"quote_id":"q_7Hk…","image_url":"https://cdn.roasos.com/workspaces/ws_01/uploads/image_url.png"}'
# → 201 { "data": { "id": "gen_…", "kind": "image", "model": "bria-bg-remove", "status": "queued", "credits_reserved": 1, "links": { "status": "/v1/jobs/gen_…/status", "result": "/v1/jobs/gen_…/result" } } }

# 3. poll
curl https://api.roasos.com/v1/jobs/gen_…/status -H "Authorization: Bearer roasos_sk_live_…"
curl https://api.roasos.com/v1/jobs/gen_…/result -H "Authorization: Bearer roasos_sk_live_…"
```

## Today
`POST /v1/image-edit/bria-bg-remove` is live. `POST /v1/generations` has no `bg_remove` type, so this endpoint is the only public surface; the app Effects page reaches the same provider endpoint through `POST /api/generate/effect`.

## See also
https://docs.roasos.com/models/image-edit/bria-bg-remove · https://api.roasos.com/v1/catalog/image-edit/bria-bg-remove · fal-ai/bria/background/remove