Post to X from Claude

How it works

1. Claude 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 Claude 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. Claude 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."

How Claude handles X

Claude is at its best when it plans before it writes. Ask for a table of X posts first, with a date, the opening line and the who can reply for each, and say OK before it saves anything. In a Claude Project, put your brand notes and the X rules you care about in the project instructions, so every chat about X starts from them. Claude then calls check_post on each draft, fixes what the X rules flag, such as text over 280 characters, and only then calls schedule_post.

More prompts in Claude's style

• "Make a table of 4 X posts for next month, 1 a week, with the date, the first line and why it matters. Wait for my OK, then save them as drafts."
• "Read the 3 X posts I published last, tell me what they have in common, and write the next one in the same style."
• "Check this X draft against the channel rules and fix anything that breaks them before you schedule it."

Before Claude schedules an X post

• The channel is connected in Postozo and shows in list_channels.
• The text is under 280 characters.
• You have seen the text, the time and the channel, and said yes.

What the call looks like

You never have to write this yourself. It shows what Claude 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 Claude

Add Postozo to Claude as a custom connector. Then ask Claude in plain English to plan, write and schedule posts on your connected channels. Connection: OAuth sign-in. Full steps are on the Claude setup page. Your X account must be connected in Postozo first: see the X scheduler.

Also works with ChatGPT and Cursor.

Tips for X posts written with Claude

• Tell Claude who the post is for and what you want people to do. "Write an 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. Claude 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.