Can the official X MCP server schedule posts?

Two ways to get scheduling anyway

1. Build the scheduler yourself

Store the text and the target time somewhere durable, run a process that wakes up every minute, and have it call the MCP publish tool when a row comes due. This works, and it is more work than it sounds: you own retries, you own the case where the process was down at the target minute, you own duplicate suppression when a retry fires after a call that actually succeeded, and you own the timezone handling.

You also still pay per post, including the $0.20 link surcharge, so the scheduler you built does not change the bill.

2. Connect an MCP server that already schedules

The OpenTweet MCP server exposes scheduling as a tool, so the model passes a time and the queue is somebody else's problem. It is a hosted Streamable HTTP endpoint, so there is nothing to install and no process of yours to keep alive.

{
  "mcpServers": {
    "opentweet": {
      "type": "streamable-http",
      "url": "https://mcp.opentweet.io/mcp",
      "headers": { "Authorization": "Bearer ot_your_key" }
    }
  }
}

After that, the agent can say a time out loud: schedule this for Tuesday at 9am, queue these five for the week, move the one at noon to 4pm. Setup for each client is in the MCP docs, and the full tool list is on the Twitter MCP server page.