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Platforms

LinkedIn

LinkedIn appears as two independent channels: one for a personal profile and one for a company page. A single workspace can connect both at the same time and post to each separately.

Channel ID	Target
linkedin	Personal profile (the individual who connected the account)
linkedin_page	Company page (the organization whose page was selected during OAuth)

Both channels share a single LinkedIn OAuth token under the hood. Reconnecting either refreshes credentials for both.

Supported content types

Type	linkedin (Profile)	linkedin_page (Page)
Feed post	✅	✅
Story	-	-
Reel	-	-

LinkedIn does not support stories or reels through its API. Only feed posts work.

Minimal example

Posting to a personal profile:

Code
curl -X POST https://api.omnisocials.com/v1/posts/create \
  -H "Authorization: Bearer $OMNISOCIALS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "content": { "default": "Excited to share our latest update." },
    "accounts": ["your-linkedin-profile-account-id"]
  }'

Posting to a company page:

Code
curl -X POST https://api.omnisocials.com/v1/posts/create \
  -H "Authorization: Bearer $OMNISOCIALS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "content": { "default": "Company announcement." },
    "accounts": ["your-linkedin-page-account-id"]
  }'

Posting the same content to both simultaneously: include both account IDs in the accounts array. OmniSocials publishes to each independently.

Code
curl -X POST https://api.omnisocials.com/v1/posts/create \
  -H "Authorization: Bearer $OMNISOCIALS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "content": {
      "default": "Same content on both",
      "linkedin": "Personal voice for the profile",
      "linkedin_page": "Official company announcement"
    },
    "accounts": [
      "your-linkedin-profile-account-id",
      "your-linkedin-page-account-id"
    ]
  }'

Platform-specific options

LinkedIn has no required option fields. The default create-post body works for both channels.

Media requirements

Media	Requirement
Image	JPEG or PNG, max 10 MB, max 6 images per post
Video	MP4 or MOV, up to 10 minutes, max 200 MB
Carousel	Up to 6 images

LinkedIn supports text-only posts, single image, multi-image carousel, or video. Mixing image and video in the same post is not supported.

Mentions

LinkedIn mentions must reference either another LinkedIn member or a company, using the URN format the LinkedIn API expects. OmniSocials exposes mention handling through the mentions field on the post body. See the API reference for the full shape.

Limitations

• Stories and reels are not available through LinkedIn's public API
• LinkedIn enforces a 3,000 character limit per post. Posts exceeding this are rejected.
• Posting to company pages requires the connecting user to be an admin of the page
• The personal profile channel (linkedin) requires the Community Management API product on LinkedIn Developer, which is automatically configured for OmniSocials customers