Post to X from ChatGPT

How it works

1. ChatGPT calls list_channels to find your X channel.
2. It calls get_channel_rules to learn the X 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.

X rules ChatGPT follows

• 280 characters on standard accounts, 25,000 on X Premium. Every link counts as 23.
• Up to 4 images or 1 video.
• Follow-up comments become a thread. Set a wait between each part if you like.
• Choose who can reply. Auto repost and auto plug run on posts that pass a like count.

Rule summary from the X connector: Max 280 characters (links count as 23). Up to 4 images or 1 video. Follow-up comments become a thread.

X 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 X

• "Turn this blog post into an X thread of 5 posts, each under 280 characters, and schedule it for tomorrow 15:00."
• "Post this announcement on X and let only accounts I follow reply."
• "After the thread gets 100 likes, reply with a link to our signup page."
• "What were my top 3 X posts by impressions last week?"
• "Write 5 short X posts about our product tips and spread them over next week."

What the call looks like

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

{
  "type": "schedule",
  "date": "2026-10-01T09:30:00+05:30",
  "content": "Your X text",
  "channels": [
    {
      "channelId": "YOUR_X_CHANNEL_ID",
      "settings": {
        "reply": "Accounts you follow"
      }
    }
  ],
  "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 X account must be connected in Postozo first: see the X scheduler.

Also works with Claude and Cursor.

Tips for X posts written with ChatGPT

• Tell ChatGPT who the post is for and what you want people to do. "Write a X 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.