The AI X growth tool that writes in your voice.

The best AI X growth tool is the one that grows your account without making you sound generic. Xpert trains on your own posts, scores every draft against your history with an engagement predictor, schedules at your proven best times, and drafts replies to the posts worth answering. Nothing publishes without your approval.

No, that is the whole point. Xpert learns your voice from your own past posts and drafts in it: your phrasing, your rhythm, your stance. No hashtag spam, no thought-leader filler. You edit and approve everything before it ships, so nothing goes out that you would not have written.

Voice match compares each draft with six of your own posts closest to it in topic and gives a sounds-like-you percentage, with the lines that drift marked and one-tap fixes. AI phrases you never use cost points. Your Voice DNA (length, rhythm, line breaks, casing, punctuation, emoji, openers, endings, signature words and the words you never use) sits in Settings, where every trait has a switch, and Edit memory learns from every change you make to a draft.

Every draft is scored against your own posting history, not a generic viral template. The hit meter compares the draft with what has actually worked for your audience, gives a verdict, and highlights the weakest line. It recalibrates as new results come in, so the predictions track your account, not someone else's.

Before you post, Xpert checks the draft for voice match, AI tells, mute and report risk, creator payout safety (engagement asks and copied posts), originality, what a link costs and the AI-image label, and it can check facts against the web. X weights a mute at −58.8 and a report at −234, against 0.66 for a like: the weights scale each reader's predicted chance of the action, and these are rare, so even a small chance costs reach. If a draft fails a check, compose asks you once before posting it. The check is free; the fact check uses credits.

X's open-sourced ranker predicts what each viewer will do with a post and weights each action. A share via copy link is weighted 20, a reply, quote or share by DM 5, a follow 4, a repost 1 and a like 0.66. Negative signals weigh far more: a report is -234 and a mute -58.8. Posts shown to people who don't follow you are scored at 0.75x. Xpert ranks your past posts with these weights and scores drafts for what they reward.

Yes. The tweet scheduler handles single posts, full threads posted as real reply chains, and long-form X Articles with AI-generated covers. Queue slots are learned from when your audience engages, and you can send anything to drafts instead of the queue.

Xpert has three plans: Pro at $49 a month, Growth at $49 (the most popular; sale price for anyone who joins by October 31, 2026, normally $99 a month) and Scale at $199, each with a 3-day free trial. A card is required to start, nothing is charged during the trial, and you can cancel from Billing in one click. It includes the app, the REST API, the CLI and the MCP server.

X does not ban AI-assisted writing, and it explicitly allows scheduled original posts. What it removes is accounts that let AI engage with other people with no human involved: in July 2026 it deleted 42,000 of them in one sweep. Xpert cannot do that. Every reply and DM to another person waits in an approval inbox until you read it and send it, and there is no setting that turns that off. You still own what you post, so check drafts for accuracy before approving them.

Xpert is built human-in-the-loop: replies and DMs are drafted by the machine and sent by you. Outbound actions wait in an approval inbox, sends are capped and spaced like a person typing, and campaigns pause the moment X pushes back. Your account is the asset, so nothing risks it on autopilot.

Yes. Ask the assistant for people you can sell to and it searches X live for posts from people asking for what you sell, then qualifies each one against your product. You get a short list with a one-line reason each, ready to add to Contacts or to reply to in your voice.

Yes. Xpert ships an MCP server that agents connect to over OAuth, a CLI for scripting from the terminal, and a REST API. Claude, Cursor, or your own agent can draft, schedule, and read analytics through the same brain the app uses.

Learning mode is off by default. When you switch it on in Settings, Xpert records what you click, which pages you use, and what you write inside the app, and distils that into a private profile that tunes the assistant, the composer and your starter prompts. Raw signals are kept 60 days; the profile stays until you clear it, which you can do any time.