Topaz Image Upscale

Endpoint

POST https://api.roasos.com/v1/image-edit/topaz-image

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

Topaz upscales one image and keeps the picture the same: same aspect ratio, more pixels, cleaner detail. Select the enhancement model for the source: Standard V2 fits most photos, High Fidelity V2 keeps the detail of professional shots, Low Resolution V2 recovers a compressed source, CGI targets art and rendered graphics, Text Refine keeps text and shapes crisp. Turn on face_enhancement when a person is the subject; keep it off for product images, because it can change a logo or a label. Use it after the image is otherwise final. It does not generate new content or change composition. The output is capped at 24 megapixels.

Pricing

The unit is one operation. Pricing key: topaz-image.

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

• upscale

Provider endpoints: fal-ai/topaz/upscale/image.

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. roasOS sends no prompt to this model. fal has a prompt field for the Redefine model only, and roasOS does not send it. 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.

• autoprompt — not accepted by this public endpoint.
• creativity — not accepted by this public endpoint.
• crop_to_fill — not accepted by this public endpoint.
• denoise — not accepted by this public endpoint.
• detail — not accepted by this public endpoint.
• enhancement_strength — not accepted by this public endpoint.
• face_enhancement_creativity — not accepted by this public endpoint.
• face_enhancement_strength — not accepted by this public endpoint.
• fix_compression — not accepted by this public endpoint.
• output_format — pinned to png.
• prompt — not accepted by this public endpoint.
• sharpen — not accepted by this public endpoint.
• strength — not accepted by this public endpoint.
• subject_detection — not accepted by this public endpoint.
• texture — 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": "topaz-image",
    "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/topaz-image \
  -H "Authorization: Bearer roasos_sk_live_..." \
  -H "Idempotency-Key: 0f1c9e2a-topaz-image-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": "topaz-image", "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/topaz-image \
  -H "Authorization: Bearer roasos_sk_live_..." \
  -H "Idempotency-Key: 0f1c9e2a-topaz-image-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/topaz-image is live. POST /v1/generations has no upscale type, so this endpoint is the only public surface; the app Effects page sends the same operation as scale, topazEnhanceModel and faceEnhancement. Before the quote, the source object is verified and pinned: the endpoint reads its true dimensions, proves that width x height x factor^2 stays at or under 24 megapixels, and copies the exact bytes, so the image that is quoted is the image that is upscaled.

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/topaz-image — 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/topaz/upscale/image.