Automate your X posts with an AI agent
Connect your AI agent to posthell, turn on publishing, and it can post to X for you: single posts or full threads, in your voice. X is the one metered network, and your credit wallet is the hard cap on what it can spend.
By Rohan Gotwal, Founder, posthellUpdated July 6, 2026X is the network founders most want on autopilot and the one that actually costs money to publish to, so posthell meters it. Point your AI agent at posthell, enable publishing for its key, and it can shape a note into an X post or a whole thread and send it on its own. Every X post debits your X credits before it goes out (a link post costs about 13 times a plain one), and that wallet is the hard ceiling: when it is empty the X post is simply skipped, so an unattended agent can never run up an open-ended bill. You get an agent that posts to X for you, with your spend bounded by design.
Your agent posts to X (Twitter) on its own once you flip its key to Publishing. It asks first by default, and you can turn autonomous posting off anytime. X posts spend your X credits, and stop when you run out.
What your agent does
Threads and posts, sent for you
Your agent turns a one-line note into a finished X post or a full thread in your voice and publishes it, on schedule or on a heartbeat, without you opening the app.
Spend bounded by your wallet
Every X post debits your X credits before it sends. That wallet is the hard cap: when it runs out the X post is skipped, so a runaway loop can never drain more than the credits you have.
Honest, exact-rate metering
X is billed at the exact passthrough rate with no markup. A plain post is one credit and a post with a link costs more, priced the way X charges, and the agent spends accordingly.
One call, every network
Ask the agent to post an update everywhere and it publishes to X and your other networks in one go. The free networks cost nothing; X draws from your credit wallet.
How to automate X (Twitter) posts
Connect your agent
Create an API key in posthell Settings, then add posthell to Claude Code, Cursor, or OpenClaw with one line, or run the posthell CLI. It uses the same account you already have.
Turn on publishing
Flip the key to Publishing so your agent can post to your networks on its own. It stays off by default, and you can revoke it anytime.
Let it post to X (Twitter)
Tell your agent what you shipped. It shapes a post in your voice and publishes to X (Twitter) on schedule, or on a heartbeat if you have it check in on a loop.
Frequently asked questions
Can an AI agent auto-post to X through posthell?
Yes, once you enable Publishing on the agent's key. The agent publishes X posts and threads on its own. X is metered, so each post spends your X credits, and when the wallet is empty the X post is skipped while your other networks still go out.
Can an agent run up a huge X bill?
No. Every X post debits your credit wallet before it sends, and that wallet is the hard cap. An agent can spend at most the X credits you already have; it cannot go past them. Prefer to review first? Leave the key draft-only and approve each X post yourself.
What does an X post actually cost?
X is metered at the exact rate it costs us, with no markup. A plain post is one credit and a post with a link costs more, because X charges differently for them. Every other network is unlimited and free.
Can I keep a human in the loop for X instead?
Yes. Leave the agent's key on "asks first" and it queues X posts as drafts for you to approve, instead of publishing them. Autonomy is per key and off by default.
Point your AI agent at X (Twitter)
Connect your agent to posthell, enable publishing, and it posts to X (Twitter) and your other networks on its own. Honest founder pricing, with X metered at the exact rate (your credit wallet caps the spend) and every other network unlimited.