Midjourney SwapFace

Submit a face swap (SwapFace) job. The documented format is with / files; the try-it panel demonstrates the gateway-compatible JSON Base64 format.

POST /mj/insight-face/swap

Request headers

Name	Type	Required	Description
	string	Yes	Bearer token, e.g.
	string	Yes	for multipart; for JSON

Request body (multipart)

Name	Type	Required	Description
	string	No	/
	file	Yes	Face source image
	file	Yes	Target image

Request body (JSON-compatible)

Name	Type	Required	Description
	string	No	/
	string	Yes	Face source Base64
	string	Yes	Target image Base64

Request example

multipart

curl -X POST https://octopusx.ai/mj/insight-face/swap \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -F "mode=RELAX" \
  -F "[email protected]" \
  -F "[email protected]"

JSON

curl -X POST https://octopusx.ai/mj/insight-face/swap \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "mode": "RELAX",
    "sourceBase64": "data:image/png;base64,source",
    "targetBase64": "data:image/png;base64,target"
  }'

Response example

{
  "code": 1,
  "description": "Submit success",
  "result": "1712158011464912"
}

Response fields

Name	Type	Description
	integer	ok, otherwise error
	string	Status text
	string	Task ID

Related

• Midjourney overview
• Task fetch