> ## Documentation Index
> Fetch the complete documentation index at: https://docs.crazyrouter.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Execute Actions

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

> Last updated: 2026-06-06

# 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

```bash cURL theme={null}
curl -X POST https://api.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

```json theme={null}
{
  "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

```bash cURL theme={null}
curl -X POST https://api.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

```json theme={null}
{
  "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

```bash cURL theme={null}
curl -X POST https://api.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

```bash cURL theme={null}
curl -X POST https://api.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"
  }'
```

<Note>
  All actions return a new task ID after submission. Use the [Query Task Status](/en/images/midjourney/query) endpoint to get results.
</Note>