How to write a launch post on X, starting from the ones that worked

You have shipped something. You have one post to tell the world, and the temptation is to make it carry the whole product: every feature, the pricing, the team, the vision, a thank-you. That post reads like a press release and travels like one. The launch posts in the library that actually moved did something narrower and harder.

Start from the board

This board is the launch post as a form, drawn from the most-watched product category on the platform. Open it before you write; you are not looking for words, you are looking for the move each one makes in its first two lines.

What the best launches do instead of everything

Read the top of the board and a pattern is hard to miss.

Introducing Claude Design by Anthropic Labs: make prototypes, slides, and one-pagers by talking to Claude.

Introducing Claude Opus 4.7, our most capable Opus model yet.

Three things, and they are the whole tutorial:

1. The thing, named, in the present tense, in line one. Not "excited to announce". The name and what it is, in a sentence a stranger can repeat.
2. Line two is a capability, not a feature. "Make prototypes, slides and one-pagers by talking to Claude" tells the reader what they can now do. A feature list tells them what you built.
3. One thing. The strongest launch posts in the library announce one product and stop. The rest of the story lives in the replies, the link, and next week's post.

The pattern guide on announcements has the numbers across every announcement in the library, if you want the case made in full.

The steps, in ViralLoop

1. Open the board above and press Remix this board. The studio arrives with the board's strongest posts as sources and its pattern already read.
2. Say what you are launching in the brief, in plain words — the thing, who it is for, and one true number if you have one (customers, a time saved, a price). Skip adjectives; the draft will be better without them and cannot invent a number you did not give.
3. Point at the parts you want. On the source you like most, press Take → Opening and Take → Structure. You are telling the engine: this move, this shape, none of these words.
4. Set the audience and goal — "Launch a product" is one of the goal chips — and choose X. Generate three.
5. Read the first line of each draft on its own. That is how a reader meets it. Keep the one whose first line you would stop for; discard the ones that open with ceremony.
6. Refine, don't re-roll. On the kept draft, press Refine → version 2: keep the opening, change the length if it ran long, add a note like "line two should be what the reader can now do". You get two takes on that draft, not three new posts.
7. Check it against the rule. Every fact in the draft is yours; not a phrase belongs to a source. If a sentence would be recognised by a reader of the original, cut it.

What to publish

The version whose first two lines a stranger would understand without knowing your company. Post it as a single post, not a thread — the launch posts that travelled here were single posts — and put the link in the first reply, where the algorithm leaves it alone.

Then write the second post: the one about what the thing let one customer do. That is the launch that compounds.