API Reference

LinkedIn API

Post updates, articles, images, and videos to LinkedIn profiles and company pages.

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Quick Start

Get started in 3 steps

Get API Key

Connect Account

Use our OAuth flow to connect LinkedIn accounts.

Start Posting

Make API calls to post content to LinkedIn.

Post to LinkedIn

JavaScript

const response = await fetch('https://getlate.dev/api/v1/posts', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    content: 'Excited to announce our new API! 🚀\n\nWe just launched...',
    mediaItems: [{ type: 'image', url: 'https://example.com/announcement.png' }],
    platforms: [{
      platform: 'linkedin',
      accountId: 'acc_abc123'
    }],
    publishNow: true
  })
});

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

Endpoints

LinkedIn Endpoints

POST/v1/posts

Create or schedule a LinkedIn post (text, image, video, or article)

GET/v1/posts/{id}

Get status and details of a LinkedIn post

DELETE/v1/posts/{id}

Cancel a scheduled LinkedIn post

GET/v1/profiles

List all connected LinkedIn profiles and pages

View full API reference

Media Specs

Media Requirements

Type	Format	Max Size	Notes
Image	PNG, JPEG, GIF	8 MB	1200x627 recommended
Video	MP4	5 GB	3 sec - 10 min duration
Document	PDF	100 MB	Up to 300 pages
Article	Rich text	110,000 chars	With thumbnail image

Late automatically transcodes and optimizes media for LinkedIn's requirements.

Rate Limits

API Limits

LinkedIn's API has daily limits based on your app tier. Late manages rate limits automatically, queuing posts when limits are approached.

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

Capabilities

Features

Post to personal profiles and company pages
Schedule posts for optimal engagement
Support for images, videos, and documents
Article publishing with rich formatting
Multi-account management
Webhook notifications for post status
Visibility controls (public/connections)

Response

Response Example

Response

200 OK

{
  "post": {
    "_id": "65f1c0a9e2b5af0012ab34cd",
    "status": "published",
    "content": "Excited to announce our new API! 🚀\n\nWe just launched...",
    "platforms": [{
      "platform": "linkedin",
      "accountId": { "_id": "acc_abc123", "username": "acme-corp" },
      "status": "published",
      "platformPostId": "urn:li:share:7012345678901234567",
      "platformPostUrl": "https://linkedin.com/feed/update/urn:li:share:7012345678901234567"
    }],
    "publishedAt": "2025-01-10T10:30:00Z",
    "createdAt": "2025-01-10T10:29:55Z"
  },
  "message": "Post published successfully"
}

Start building with LinkedIn API

Skip the LinkedIn Marketing API complexity. Late handles OAuth, media uploads, and rate limits so you can ship faster.

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