Bria Background Remove

Endpoint

POST https://api.roasos.com/v1/image-edit/bria-bg-remove

Send your API key as a bearer token. The key needs the scope api:write. Every paid request also needs an Idempotency-Key header.

The envelope fields quote_only, quote_id, webhook_url and wait_timeout_seconds behave the same on each model endpoint. Refer to Jobs and Quotes and credits.

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

The unit is one operation. Pricing key: bria-bg-remove.

The credits come from the roasOS pricing table. No other field changes the price. To get the exact price of your request, send it with quote_only: true first.

Modes

• background-remove

Provider endpoints: fal-ai/bria/background/remove.

Request fields

The schema is strict. A field that is not in this table gets 400 unsupported_option. The field names are the roasOS role names. One role has one name in every family.

Media

This endpoint accepts these media roles:

• image_url — first frame (or the single source image)

Every other role is 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 gets 400 unsupported_option.

Prompt

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

Not exposed

These catalog entries describe omitted inputs, pinned values and source constraints. They do not imply that the provider accepts every listed field.

• sync_mode — not accepted by this public endpoint.

Result

The result kind is image. Always present: nothing. Present when the run makes it: avatar_id, full_body_url, images, portrait_url, provider_seed, reference_sheet, url.

{
  "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"
    }
  }
}

The files are immutable objects on https://cdn.roasos.com. A result URL is a valid media input for your next request.

Example

The three steps are always the same: quote, run, poll.

# 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. Same body, same Idempotency-Key, quote_id in place 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_...", "status": "queued", "credits_reserved": 1 } }

# 3. Poll, then read the result.
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

• llms.txt for this model — the same facts as one plain-text file for an agent.
• GET https://api.roasos.com/v1/catalog/bria-bg-remove — the machine-readable form: enums, defaults, limits and prices. Refer to the API reference.
• Jobs — how to poll a job and read its result.
• Provider endpoints: fal-ai/bria/background/remove.