Execute Midjourney Buttons

October 27, 2025

Table of contents

  1. Request Headers
  2. Request Body
  3. Parameters
    1. Supported Buttons
  4. Responses
  5. Model
  6. Examples
  7. Try It

Execute button actions on completed Midjourney jobs (upscale, variations, zoom, pan, reroll, etc.).

Execute-Once Pattern: U1-U4 upscale buttons can only be executed once per job. Subsequent requests return the existing child job immediately.

https://api.useapi.net/v3/midjourney/jobs/button

Request Headers 

Authorization: Bearer {API token}
Content-Type: application/json

Request Body 

{
  "jobId": "j1023141520123456789i-u12345-c1234567890123456789-bot:midjourney",
  "button": "U1",
  "stream": true,
  "replyUrl": "https://your-server.com/webhook",
  "replyRef": "your-reference-id"
}

Parameters

  • jobId is required. Parent job ID from completed imagine/button job. Must be a valid v3 job ID format. Parent job must have status: "completed".

  • button is required. Button label to execute from the parent job’s response.buttons array. Only buttons available in completed parent job can be used. See Supported Buttons below.

  • mask is optional. Required only for Vary (Region) button. See Vary Region Mask Editor for details.

  • prompt is optional. Required for Custom Zoom button. When Remix mode is active, variation buttons (V1, V2, V3, V4, Vary (Region), Vary (Strong), Vary (Subtle)), pan buttons (⬅️, ➡️, ⬆️, ⬇️), and 🔄 (Reroll) also accept a prompt. If not provided, the original prompt will be used.

  • stream is optional (default: true).
    • true - Returns Content-Type: text/event-stream with live progress events. See SSE Streaming Guide
    • false - Returns Content-Type: application/json with initial job state. Use GET /jobs/jobid to retrieve updates and results

  • replyUrl is optional. Webhook URL for real-time job event callbacks. If channel has default replyUrl configured, it will be used when job-specific one is not provided. All job events POST-ed to this URL as they occur.
    Overrides channel-level replyUrl if specified.
    Maximum length 1024 characters.

  • replyRef is optional. Your reference ID stored with job.
    Returned in all responses and callbacks as response.replyRef.
    Maximum length 1024 characters.

Note: Button job executes in the same channel as the parent job.

Supported Buttons

Upscale (Execute-Once):

  • U1, U2, U3, U4 - Upscale one of four grid images
  • Note: Can only be executed once per parent job. Subsequent requests return existing child job.

Variations:

  • V1, V2, V3, V4 - Create variations of one of four grid images
  • Make Variations - Create variations
  • Vary (Strong) - Strong variation
  • Vary (Subtle) - Subtle variation
  • Vary (Region) - Regional variation (requires mask parameter)

Zoom:

  • Zoom Out 1.5x - Zoom out 1.5x
  • Zoom Out 2x - Zoom out 2x
  • Custom Zoom - Custom zoom (prompts for parameters)

Pan:

  • ⬅️, ➡️, ⬆️, ⬇️ - Pan in direction

Upscale Quality:

  • Upscale (2x), Upscale (4x) - Upscale resolution
  • Upscale (Subtle), Upscale (Creative) - Upscale variants
  • Redo Upscale (2x), Redo Upscale (4x) - Redo upscale
  • Redo Upscale (Subtle), Redo Upscale (Creative) - Redo upscale variants

Video:

  • Animate (Low motion), Animate (High motion) - Animate image
  • Extend (Low motion), Extend (High motion) - Extend video

Other:

  • 🔄 - Reroll (regenerate with same prompt)
  • Make Square - Make image square
  • Remaster - Remaster image

Responses

  • Real-time SSE streaming (stream: true)

    Returns Content-Type: text/event-stream with live events. See SSE Event Format for details.

  • 200 OK

    Execute-once button (U1-U4) already executed - returning existing child job.

    {
  "jobid": "j1023141525987654321i-u12345-c1234567890123456789-bot:midjourney",
  "verb": "button",
  "status": "completed",
  "created": "2025-10-23T14:15:25.987Z",
  "updated": "2025-10-23T14:16:30.123Z",
  "request": {
    "jobId": "j1023141520123456789i-u12345-c1234567890123456789-bot:midjourney",
    "button": "U1"
  },
  "response": {
    "attachments": [{"url": "https://cdn.discordapp.com/..."}]
  }
}

    Note: U1-U4 buttons return existing child job on subsequent executions (no 409 error).

  • 201 Created

    New button job created (stream: false).

    {
  "jobid": "j1023141525987654321i-u12345-c1234567890123456789-bot:midjourney",
  "verb": "button",
  "jobType": "image",
  "status": "created",
  "created": "2025-10-23T14:15:25.987Z",
  "updated": "2025-10-23T14:15:25.987Z",
  "request": {
    "jobId": "j1023141520123456789i-u12345-c1234567890123456789-bot:midjourney",
    "button": "U1",
    "stream": false
  }
}

  • 400 Bad Request

    {
  "error": "jobId is required"
}

  • 401 Unauthorized

    {
  "error": "Unauthorized"
}

  • 402 Payment Required

    {
  "error": "Account has no subscription or subscription expired"
}

  • 404 Not Found

    {
  "error": "Parent job not found"
}

  • 410 Gone

    Parent job is older than 62 days.

    {
  "error": "Parent job has expired"
}

  • 429 Too Many Requests

    Channel at capacity or rate limited. Wait 10-30 seconds and retry.

    {
  "error": "Channel 1234567890123456789 is busy executing 3 image jobs"
}

  • 596 Pending Moderation

    Channel has pending moderation/CAPTCHA. Email notification sent. Log into Discord and address moderation message/CAPTCHA. Execute POST /accounts/channel/reset.

    {
  "error": "All configured Midjourney channels (2) have errors (pending moderation, CAPTCHA, etc.). Please resolve channel issues before making new requests."
}

Model

See Job Response Model for complete response structure.

Examples 

  • curl -H "Authorization: Bearer YOUR_API_TOKEN" \
     -H "Content-Type: application/json" \
     -X POST "https://api.useapi.net/v3/midjourney/jobs/button" \
     -d '{"jobId":"j1023...","button":"U1","stream":true}'

  • const response = await fetch('https://api.useapi.net/v3/midjourney/jobs/button', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_API_TOKEN',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    jobId: 'j1023141520123456789i-u12345-c1234567890123456789-bot:midjourney',
    button: 'U1',
    stream: true
  })
});

  • import requests

response = requests.post(
    'https://api.useapi.net/v3/midjourney/jobs/button',
    headers={'Authorization': 'Bearer YOUR_API_TOKEN'},
    json={'jobId': 'j1023...', 'button': 'U1', 'stream': True}
)

Try It