Face Swap Plus API reference

Call Face Swap Plus from your own code with one PopNow API key. Below are the exact model IDs to send, every input field the model accepts, what each request costs in credits, and a request you can paste into a terminal.

At a glance

Made by: PopNow
Output: Image
From: 24 credits per image ($0.24)
Typical time: about 31 s
Model IDs: popnow/face-swap-v1-plus/edit

1 credit = $0.01. A task holds the highest possible charge when it is accepted and settles the real amount when it finishes, rounded up to whole credits; failed tasks are not charged. Ask POST /api/v1/jobs/quote for the exact figure before you run.

Face Swap

popnow/face-swap-v1-plus/edit

Price

Option	Credits (per image)	US dollars
`Default`	24	$0.24

Parameters

Field	Type	Default	Allowed	What it does
`image_url`Required	`string`	—	—	Target image. The face of the person in this image is the one that gets replaced.
`reference_image_url`Required	`string`	—	—	Reference face image. The facial identity from this image is transferred onto the target.
`prompt`Optional	`string`	—	up to 200 characters	Optional short note guiding one subtle attribute of the result, such as an accessory, an expression or a different hairstyle.
`output_format`Optional	`string`	`jpeg`	png, jpeg, webp	File format of the returned image.
`output_quality`Optional	`integer`	`95`	10 to 100	Requested image quality for the result, from 10 to 100.
`seed`Optional	`integer`	—	0 to 2147483647	Random seed; reuse it to keep two runs over the same image pair comparable.

Example request

This request runs as it is; any field you leave out uses its default. Put your key in POPNOW_API_KEY first.

The example uses PopNow sample files in image_url, reference_image_url. Replace them with your own public HTTPS links, uploads or saved assets.

POST /api/v1/jobs/createTask?wait=60

curl -X POST "https://api.popnow.ai/api/v1/jobs/createTask?wait=60" \
  -H "Authorization: Bearer $POPNOW_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
  "model": "popnow/face-swap-v1-plus/edit",
  "input": {
    "prompt": "Change the orange jacket to deep forest green and add soft golden-hour light; keep the face, pose and background unchanged",
    "image_url": "https://media.popnow.ai/influencer/examples/marco.webp",
    "reference_image_url": "https://media.popnow.ai/influencer/examples/ava.webp"
  }
}'

The response carries a taskId straight away. Read the result with GET /api/v1/jobs/recordInfo, or add callBackUrl to be notified.

GET /api/v1/jobs/recordInfo

curl "https://api.popnow.ai/api/v1/jobs/recordInfo?taskId=TASK_ID_FROM_CREATE_TASK" \
  -H "Authorization: Bearer $POPNOW_API_KEY"