API Reference

YouTube API

YouTube's Data API has a 10,000-unit daily quota, resumable upload sessions, and complex OAuth scopes. Zernio gives you one endpoint for videos, Shorts, and channel management with no quota headaches.

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Quick Start

1.
Get API Key
Sign up for free and get your API key in seconds.
2.
Connect Account
Use our OAuth flow to connect YouTube accounts.
3.
Start Posting
Make API calls to post content to YouTube.

Upload a YouTube video

JavaScript

const response = await fetch('https://zernio.com/api/v1/posts', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    content: 'Learn how to build a REST API from scratch...',
    mediaItems: [{ type: 'video', url: 'https://example.com/tutorial.mp4' }],
    platforms: [{
      platform: 'youtube',
      accountId: 'acc_abc123',
      platformSpecificData: {
        title: 'REST API Tutorial for Beginners',
        visibility: 'public'
      }
    }],
    tags: ['api', 'tutorial', 'programming'],
    publishNow: true
  })
});

const post = await response.json();
console.log(post.post._id); // '65f1c0a9e2b5af0012ab34cd'

YouTube Endpoints

POST/v1/posts

Upload or schedule a YouTube video or Short

GET/v1/posts/{id}

Get status and details of a YouTube upload

DELETE/v1/posts/{id}

Cancel a scheduled YouTube upload

GET/v1/profiles

List all connected YouTube channels

View full API reference →

Media Requirements

Type	Format	Max Size	Notes
Video	MP4, MOV, AVI, WMV	256 GB	Up to 12 hours duration
Shorts	MP4, MOV	256 GB	Up to 60 sec, 9:16 aspect
Thumbnail	JPEG, PNG	2 MB	1280x720 recommended
Title	Text	100 chars	Required for videos

Zernio automatically transcodes and optimizes media for YouTube's requirements.

API Limits

YouTube's Data API has quota limits that reset daily. Zernio manages your quota usage and queues uploads to avoid hitting limits.

Zernio handles all rate limiting automatically. We queue and retry requests as needed.

Features

✓Upload long-form videos and Shorts
✓Schedule video premieres
✓Custom thumbnails support
✓Tags, descriptions, and playlists
✓Privacy settings (public/unlisted/private)
✓Multi-channel management
✓Webhook notifications for processing status

Response Example

Response

JSON

{
  "post": {
    "_id": "65f1c0a9e2b5af0012ab34cd",
    "status": "published",
    "content": "Learn how to build a REST API from scratch...",
    "platforms": [{
      "platform": "youtube",
      "accountId": { "_id": "acc_abc123", "username": "YourChannel" },
      "status": "published",
      "platformPostId": "dQw4w9WgXcQ",
      "platformPostUrl": "https://youtube.com/watch?v=dQw4w9WgXcQ"
    }],
    "createdAt": "2025-01-10T10:30:00Z"
  },
  "message": "Post published successfully"
}

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