Head Swap API reference

Call Head Swap 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: 1.95 credits per image ($0.0195)
Typical time: about 23 s
Model IDs: popnow/head-swap-v1/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/head-swap-v1/edit

Price

Option	Credits (per image)	US dollars
`Default`	1.95	$0.0195

Parameters

Field	Type	Default	Allowed	What it does
`image_url`Required	`string`	—	—	Target image. The head of the person in this image is the one that gets replaced.
`reference_image_url`Required	`string`	—	—	Reference head image. The whole head, including hair and head shape, is transferred onto the target.
`seed`Optional	`integer`	—	0 to 2147483647	Random seed; zero requests a random seed.

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/head-swap-v1/edit",
  "input": {
    "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"