Post to Facebook from ChatGPT

How it works

1. ChatGPT calls list_channels to find your Facebook channel.
2. It calls get_channel_rules to learn the Facebook limit, media needs and settings.
3. It writes the post and runs check_post, which returns any rule problems.
4. It picks a time with find_free_slot if you did not give one, shows you the post, and calls schedule_post after you say yes.

Facebook rules ChatGPT follows

• Up to 10 photos or 1 video. Facebook cannot mix photos and a video in 1 post.
• The link preview setting only works on posts without photos or video.
• Follow-up comments are posted by the Page, a good place for a link.

Rule summary from the Facebook connector: Up to 10 photos or 1 video. Follow-up comments are posted as comments by the page.

Facebook settings the agent can use

These go in channels[].settings of schedule_post. ChatGPT learns them from get_channel_rules, so you can just describe what you want.

Example prompts for Facebook

• "Write a Facebook post about our weekend opening hours and schedule it for Friday 18:00 on my Page."
• "Post these 4 product photos to Facebook as 1 post with a short caption, and add the shop link as the first comment."
• "Show me last month's Facebook results: views, reach and engagement."
• "Turn this press release into a Facebook post under 500 characters with a link preview to the article."
• "Plan 3 Facebook posts for next week about customer stories and save them as drafts."

What the call looks like

You never have to write this yourself. It shows what ChatGPT sends to schedule_post for Facebook, with real setting keys:

{
  "type": "schedule",
  "date": "2026-10-01T09:30:00+05:30",
  "content": "Your Facebook text",
  "channels": [
    {
      "channelId": "YOUR_FACEBOOK_CHANNEL_ID",
      "settings": {
        "link": "https://example.com/sale"
      }
    }
  ],
  "thread": [
    {
      "content": "First comment",
      "delay": 5
    }
  ]
}

Set up ChatGPT

Add Postozo to ChatGPT as a custom app in developer mode. Then ask ChatGPT to plan, write and schedule posts on your channels. Connection: your personal key URL. Full steps are on the ChatGPT setup page. Your Facebook account must be connected in Postozo first: see the Facebook scheduler.

Also works with Claude and Cursor.

Tips for Facebook posts written with ChatGPT

• Tell ChatGPT who the post is for and what you want people to do. "Write a Facebook post for small shop owners that asks them to book a demo" works better than "write a post".
• Start the chat with a few lines about your tone and the words to use or avoid. ChatGPT writes the text itself, so it needs this to sound like you.
• Ask for 2 or 3 versions and pick 1. It is faster than asking for changes 5 times.
• Say "save as drafts" when you want to check the posts on the calendar before they are scheduled.
• Add 1 detail only you know, like a real number from your business or a customer question. It makes the post yours.