Execute Actions

Execute Midjourney follow-up actions: upscale, variation, blend, describe, and more

Execute Actions

Action - Upscale / Variation

POST /mj/submit/action

Execute follow-up actions on a completed Imagine task, such as Upscale, Variation, etc.

Request Parameters

Parameter	Type	Required	Description
taskId	string	Yes	Original task ID
customId	string	Yes	The customId of the action button, obtained from the task’s buttons field
notifyHook	string	No	Callback URL
state	string	No	Custom state

Request Example

cURL

curl -X POST https://crazyrouter.com/mj/submit/action \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "taskId": "task_1234567890",
    "customId": "MJ::JOB::upsample::1::abc123"
  }'

Response Example

{
  "code": 1,
  "description": "Submitted successfully",
  "result": "task_action_001",
  "properties": {}
}

---

Blend - Image Blending

POST /mj/submit/blend

Blend multiple images to generate a new image.

Request Parameters

Parameter	Type	Required	Description
botType	string	No	MID_JOURNEY (default) or NIJI_JOURNEY
base64Array	array	Yes	Array of Base64-encoded images, 2-5 images
dimensions	string	No	Output dimensions: PORTRAIT, SQUARE, LANDSCAPE
notifyHook	string	No	Callback URL
state	string	No	Custom state

Request Example

cURL

curl -X POST https://crazyrouter.com/mj/submit/blend \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "base64Array": [
      "data:image/png;base64,iVBORw0KGgo...",
      "data:image/png;base64,iVBORw0KGgo..."
    ],
    "dimensions": "SQUARE"
  }'

Response Example

{
  "code": 1,
  "description": "Submitted successfully",
  "result": "task_blend_001"
}

---

Describe - Image Description

POST /mj/submit/describe

Upload an image and let Midjourney generate corresponding prompt descriptions.

Request Parameters

Parameter	Type	Required	Description
botType	string	No	MID_JOURNEY (default) or NIJI_JOURNEY
base64	string	Yes	Base64-encoded image
notifyHook	string	No	Callback URL
state	string	No	Custom state

Request Example

cURL

curl -X POST https://crazyrouter.com/mj/submit/describe \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "base64": "data:image/png;base64,iVBORw0KGgo..."
  }'

---

Modal - Dialog Confirmation

POST /mj/submit/modal

Submit a Midjourney modal confirmation action (e.g. Region Vary and other operations requiring secondary confirmation).

Request Parameters

Parameter	Type	Required	Description
taskId	string	Yes	Original task ID
prompt	string	No	Prompt in the modal dialog
maskBase64	string	No	Base64-encoded mask image

Request Example

cURL

curl -X POST https://crazyrouter.com/mj/submit/modal \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "taskId": "task_1234567890",
    "prompt": "add a rainbow in the sky"
  }'

All actions return a new task ID after submission. Use the Query Task Status endpoint to get results.