Answers

Answers

Straight, up-to-date answers to the questions people ask about posting to X (Twitter) with AI agents, MCP servers, and APIs. OpenTweet is a Twitter/X scheduler and posting API that holds the X connection for you, so an agent can post without a developer account.

Last updated: July 2026

Questions and answers

Each answer leads with the short version, then the detail, a comparison table, and an FAQ.

Is the official X MCP server free?

No subscription fee, but it bills X API pay-per-use: about $0.015 per post and $0.20 per post with a link.

Can Claude post to Twitter (X)?

Yes, through an MCP connector. Claude has no built-in X connection, so you add one.

Can Grok post to X for you?

Grok reads X natively, but posting on your behalf needs a posting tool or API connected to it.

Do I need an X developer account to automate tweeting?

No, not if you use a managed service that holds the X connection for you.

Can you schedule X Articles?

Not natively. X only offers Publish now. Here is how to schedule a long-form Article anyway.

What is the character limit for an X Article?

Up to roughly 100,000 characters, about 15,000 words, versus 280 for a tweet and 25,000 for a long post.

X Article vs long post vs thread: which to use?

Threads for reach, long posts for one in-feed take, Articles for deep evergreen pieces.

Does X API pay-per-use have a spend cap?

Yes, but the defaults can still surprise you. Auto-recharge tops up $200 whenever your balance drops under $10.

Why am I getting 403 Forbidden posting to the X API?

Usually one of five causes: the new reply restriction, a missing scope, read-only app permissions, account state, or a duplicate.

What causes an X API 429 rate limit error?

Which limits apply in 2026, the headers that tell you when to retry, and how to back off correctly.

Is the X API free in 2026?

No. The free tier is gone and posting bills per call, at about $0.015, or $0.20 when the post contains a link.

Can the official X MCP server schedule posts?

It can post, but it cannot schedule. It also bills pay-per-use and needs your own developer app.

Which ChatGPT plans can post via MCP?

MCP write actions run in Developer Mode, in beta on Business, Enterprise and Edu. Plus and Free cannot.

API or MCP: which should an agent use to post?

When a REST endpoint is the right call, when MCP is, and why the answer is usually not the same for both.

Can Perplexity post to X?

Perplexity researches well but does not hold your X account. Here is what it takes to close that gap.

Can Copilot post to X?

GitHub Copilot can, through an MCP server you add to your editor. Here is the config.

Can I post to multiple X accounts from one API key?

Yes. One key, an x_account_id per request, and 1, 3 or 10 accounts depending on plan.

How much does running an X bot cost per month?

The real monthly number once you add posting, link posts and reads, compared against a flat plan.

Is it safe to connect an MCP server to my X account?

What an MCP server can and cannot do with your account, and what to check before connecting one.

What replaced X Creator Revenue Sharing?

Original Content Rewards. The old program paid out for the last time on 7 September 2026.

Why did my X payout stop?

The old program ended and the new one has different gates. Here is what changed and what to do.

Did X suspend my bot in the purge?

X removed 42,000 accounts for automated replies. The signals it used, and what to do if you were caught.

Can I post to Bluesky without applying for an API key?

Yes, and there is nothing to apply for. Bluesky issues no API keys and runs no developer program.

How much does it cost to cross-post to X and Bluesky with an API?

The Bluesky half is $0, so your whole bill is the X half. Worked monthly math at $0.015 and $0.20 a post.

Is there an MCP server that posts to both X and Bluesky?

Yes. One tool call with a platforms array publishes natively to each, and one tool says where a post will land.

How do I get Claude Code to post my tweet to Bluesky too?

One command to add the MCP server, one parameter on the call, and the project rule that makes it stick.

Do I have to give a scheduling tool my Bluesky password?

Never your account password, but most tools want an App Password. What that grants and what OAuth avoids.

Why does my Zapier Bluesky action need a paid plan?

The app is Premium, so the gate is Zapier. Bluesky itself charges nothing to publish.

Can I cross-post to Bluesky if I self-host my own PDS?

Yes. OAuth resolves your server from your handle, which is exactly what most tools skip.

What happened to the $200 Twitter API tier and what do I use now?

Force-migrated to pay-per-use on 1 June 2026. The ceiling you lost, and the three replacements.

Is there one API endpoint that posts to X and Bluesky at once?

Yes, POST /api/v1/posts with a platforms array. Plus the gotcha about leaving the field out.

Skip the developer account

Connect your X account once, or paste one MCP URL into your AI client. Flat $11.99/mo, no per-post fee.

7-day free trial. Cancel anytime.