Schedule X posts and threads.

Write a single post or a full thread, schedule it for the right time and let PostBoost publish it in order.

Free plan, no credit card. Paid plans include a 14-day free trial.

What you can post to X

Post

Up to 280 characters (25,000 for verified accounts), with up to 4 photos, one video or one GIF.

Thread

Add parts to a post and they publish as replies, in order.

Why teams schedule X with PostBoost

One calendar for every channel

See X next to your other 14 channels and move posts when plans change.

One post, a version per network

Write once, then adjust the text for X without copying the post.

Know when a post fails

If X rejects a post, you see why and can retry it once it is fixed. A webhook can tell your code too.

Threads without copy and paste

Split a long post into parts and PostBoost publishes the whole thread at the scheduled time.

Connect X in three steps

Open Accounts

Go to Accounts and choose Connect account, then X.
Sign in to X

Approve PostBoost on X. Your account appears in the composer.
Write and schedule

Write a post or a thread, pick a time or add it to the queue.

Post to X from your AI agent or your code

Ask your agent

“Turn this blog post into a 5-part X thread and schedule it for tomorrow at 9:00.”

text MCP tools

count-characters, create-post, schedule-post

Not connected yet? Ask your agent to connect X: it sends you a one-time sign-in link that works for 15 minutes.

Set up your agent

API

bash

curl -X POST https://postboost.co/app/api/{workspaceUuid}/posts \
  -H "Authorization: Bearer YOUR_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"accounts": [12], "queue": true, "versions": [{"account_id": 0, "is_original": true, "content": [{"body": "Our API 1.8 is live."}]}]}'

API reference: createPost

Good to know

Photos and videos cannot be mixed in one X post.
X has no first comment. Use a reply in the thread instead.

Network status: Network permissions

X on PostBoost in one paragraph

PostBoost schedules and publishes to X: post and thread. You connect it by signing in to X. Posts go out from the dashboard, from an AI agent over MCP or from the REST API, and each connected X account counts toward your plan's social accounts (Free: 3).

text

channel: X
providers: twitter
formats: Post, Thread
text_limit: 280
media: up to 4 photos, one video or one GIF; no mixing
connect: dashboard, or create-connect-link (MCP) / createConnectLink (API)
post: create-post, schedule-post, add-post-to-queue (MCP); POST /posts createPost (API)
page: https://postboost.co/integrations/x
docs: https://postboost.co/docs/permissions/
pricing: https://postboost.co/pricing.md
llms: https://postboost.co/llms.txt

Questions about X

Can I schedule X threads?

Yes. Each part of the thread publishes as a reply to the one before, in order, at the time you pick.

Can I post more than 280 characters?

Yes, if your X account is verified: verified accounts can post up to 25,000 characters. Other accounts have the 280-character limit.

Can I connect X on the Free plan?

Yes. Every plan can connect X. The Free plan includes 3 social accounts and 3 scheduled posts. Paid plans start at $29 a month with a 14-day free trial.

Can my AI agent post to X?

Yes. Connect PostBoost to Claude, ChatGPT, Cursor or another MCP client, then ask it to write or schedule a X post. Posts stay drafts until you or the agent schedule them.

Start scheduling X posts today.

Free plan, no credit card.