XThe X Algorithm
Edition III drop · new drop on the 25th of every month

Stop guessing what X wants.

The answers are in X's own code and rules. X's For You feed code is public, but it is enormous, technical, and constantly changing. This book combines that code with X's rules, enforcement reports, and live-account measurements from the X API, then turns it into plain-English instructions for posting better, reaching more people, and qualifying for Original Content Rewards.

Buy the book, $24.99Also on Apple Books $24.99 once. Read online, or in any reader app. Twelve months of drops included.
The X Algorithm, the book cover
The next drop November drop
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The book is updated on the 25th of every month. If X changed something, the book gets changed too. Updates are free.

177parameters X publishes for its feed, and what every one of them does.
40times a like. What a reply weighs on your original post when you follow each other.
48hHow long a post stays in the pool the Home feed picks from. After that it is still on your profile, in search, and in any conversation.
500,000Verified impressions in 90 days to get into the program. Replies don't count.
Why you need it

Every guess you've made about X has an answer in the open-source code, and in real numbers.

What the feed rewards

The exact weight of a like, a reply, a share, a follow, and a report. Why questions beat statements three to one. Why a "not interested" tap is weighted so heavily against you. Why a reply from somebody you follow back is weighted four times a reply from anyone else.

What can silence you

The visibility rules in the order X runs them. Every label X can put on a post or an account, in X's own words, and what each one does. The spam rules that catch repeated text, machine-sounding text, and posting on a timer. How to read the monthly report X gives you.

How to get paid

The Original Content Rewards Program rule by rule, the legal terms clause by clause, what each account type gets, what counts as an impression and what doesn't, and a plan in phases to reach the threshold and apply.

The short version

The answers first. The proof behind them.

Chapter 2 is the card you keep next to the keyboard: what each action weighs next to a like, what to do before you post, the Do list, the Don't list, and what to do after you post. It is the fastest way to change how you post today. The other 33 chapters are everything under it: the code, the rules, every label X can put on you, the program, the numbers, and the plan to get paid.

What a viewer doesTimes a like
Reply to your post10
Reply, when you follow each other40
Somebody copies the link and sends your post on40
Follow you from the post8
Like1
Tap "not interested"-86.4
Report the post-468
From X's published weights. Each one multiplies how likely X predicts a reader is to do that thing before it decides whether to show them your post. None of them is a count of times anything happened. See all 223 of them, with the arithmetic.
The X Algorithm

Stop guessing what the feed wants.

A new drop on the 25th of every month. $24.99 once, twelve months of drops included.

Inside the book · a sample

Open the book.

These are the real pages in the same reader buyers get. Tap any page. The front matter, the contents, all of Chapter 1, and Chapter 2 up to the Do list read clearly; every page after that is blurred until you buy.

Post lab

See what a post that gets replies looks like.

Chapter 2, drawn as real posts: a good post and a bad post side by side for six subjects, the reply thread played out step by step with the points counted, and a composer that checks your post against the rules as you type. Buyers only.

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Post lab: the reply thread, played out
Post lab: the reply thread, played out
Highlights

Highlight it.

Select the words and pick a color. Click a highlight later to change its color, add a note, or remove it. A highlight can run across paragraphs, up to about a page. Only you see them.

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A highlighted passage in the reader
A highlighted passage in the reader
Notes

A note on any highlight.

Click a highlight, choose Note, and write. A small dot after the highlight shows there is a note; click the dot and it opens. Notes are private, and they stay with the book.

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The Marks panel with highlights and notes
The Marks panel with highlights and notes
Bookmarks and the Marks panel

Every mark, one panel.

Every page has a ribbon at its top-right corner; click it to bookmark the page. The Marks button lists every bookmark, highlight, and note with its chapter and page, and one click jumps you there.

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The Marks panel
The Marks panel
Contents, zoom, dark mode

Built like a book. Reads like a website.

The Contents panel jumps to any chapter. Zoom with the minus, Fit, and plus buttons. The sun and moon switch between light and dark, and the book follows.

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The Contents panel
The Contents panel
On any device

It remembers your page.

Open the book on your laptop, keep reading on your phone. It picks up where you left off on any device, in any browser, and nothing needs installing. Or take the EPUB into Apple Books, Kindle, Kobo, or any reader app.

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Your book
Your book
Drops

Always the current drop.

On the 25th of each month the book here becomes the new drop by itself, and an email tells you what changed. Your highlights and bookmarks are tied to the words, not the page numbers, so they find their places again in the new drop.

See the drops
The drops timeline
The drops timeline
Questions

Before you buy

All the questions

What do I get?

The book to read online here, in a reader that remembers your page, and an EPUB made for you to keep in Apple Books, Kindle, Kobo, or any reader app. Both are the current drop, and both are replaced when the next one lands.

What is a drop?

The monthly release of the book. On the 25th of each month the book is re-read against X's code and rules, the numbers are re-measured, and the new version drops. You get an email with what changed and a link; the book here is already the new drop. On Apple Books, Apple delivers it to the Books app.

Is there a subscription?

No. One price. Drops are included for twelve months from the day you buy. When they end, you keep the last drop you received, and you can add another twelve months of drops for $19.99 whenever you like. Nothing renews on its own.

Here or Apple Books: which one?

They're separate purchases of the same book. Here, $24.99: the online reader with highlights, notes, and bookmarks, an EPUB in your name, and twelve months of drops. On Apple Books, $31.99: the book in the Books app with Apple's own highlights and notes, and every drop for as long as the book is listed there. An Apple purchase doesn't include an account here, and a purchase here doesn't include the Apple edition.

Why isn't it on Amazon?

Because it drops monthly and Amazon can't deliver that. When a Kindle book is revised, only new buyers get the new version; people who already bought it keep the old one. Here and on Apple Books, every buyer gets every drop.

Where does the information come from?

Four places. X's open-source feed code. X's help center and the program's legal terms. X's monthly Under the Hood enforcement reports. And live accounts run through our own software on the X API: every post published for real, and its impressions, replies, follows, timing, and more read back and measured. The code says what X rewards. The measurements show what it did. That second half is ours, and it is why the book says things nobody can get from the code alone.

Do I need a Premium account?

To read the book, no. To join the Original Content Rewards Program, X requires Premium, Premium+, or Premium Business. The book explains exactly what each account type gets.

Is it technical?

No. It's written for people who have never read a line of code. Every term is defined the first time it's used, and every number says where it came from. 41 chapters across 13 parts, with a glossary and three appendices.

Buy once, drops included

Here, or on Apple Books.

Side by side

Here

  • Read online in the reader: highlights, notes, bookmarks, your place kept on every device.
  • An EPUB in your name for any reader app, replaced with each drop.
  • An email on drop day with what changed.
  • Twelve months of drops, $19.99 for each further twelve.

Apple Books

  • In the Books app on iPhone, iPad, and Mac, with the app's own highlights and notes.
  • Apple delivers each drop to your library, with "What's new" notes.
  • Drops for as long as the book is on Apple Books; Apple handles refunds.
  • $31.99, one time.

Not affiliated with X Corp. No result, number, or admission to any X program is guaranteed. Drops are included for twelve months from purchase; further drops are a separate purchase. Terms and disclaimer.