Marketing Prompts for Social Media: 5 Templates to Copy

Ask an AI to "write a LinkedIn post about our new offer" and you'll probably read something like "We're thrilled to announce." The tool isn't to blame: without material, it produces the average of all the posts it has ingested, and nobody stops for an average.

Take a small coffee roaster in Nantes launching a coffee subscription for offices. Here's the request most people type:

Write a LinkedIn post to present our coffee subscription for businesses.

And here's the same request, with what only the company can know:

Write a LinkedIn post for an artisan coffee roaster in Nantes.
Reader: office manager at a company of 10 to 50 people, who handles all the office purchasing on her own.
Her pain point: the pod machine is expensive and nobody likes the coffee.
Our offer: whole-bean coffee delivered every two weeks, quantity adjustable from one month to the next, grinder on loan.
Fact to use: we roast on Tuesday and deliver on Thursday.
Angle: start from the scene where she's ordering pods in a rush on a Friday evening.
Constraints: 90 words maximum, short sentences, no emoji, no superlatives, no "thrilled to announce." The first line must make sense on its own, because the rest is folded away in the feed.
End with a question she can answer in one word.

The second text will need a proofread, but it starts from a scene and a verifiable fact (roasted Tuesday, delivered Thursday) that a competitor can't copy as is. All the work that follows consists of feeding the AI this kind of material without retyping it every time.

Build a voice sheet once and for all

Describing your tone with adjectives ("warm but professional") doesn't give you much. Your old posts say far more. Pick five that performed well or that sound like you, and have the rules extracted from them.

Here are 5 posts from [BRAND OR PERSON]:
[PASTE THE 5 TEXTS]

Analyze these texts and write a voice sheet I can reuse. Describe only what you observe in the texts:
- average sentence length and how posts begin
- register, and how the reader is addressed
- recurring expressions
- what never appears (humor, numbers, calls to action, emojis)
- 3 rules to follow and 3 phrasings to avoid, each illustrated with an exact quote

If a point isn't clear enough from 5 texts, write "to be confirmed" rather than assuming.

Then paste this sheet at the start of each request, or store it in your tool's custom instructions. The full method is in our guide to getting the AI to write in your style.

An editorial calendar that doesn't go in circles

A calendar requested in one go gives you twenty variations of "3 tips for." To avoid that, impose content categories and force the AI to build on your own events of the month.

You're preparing the publishing calendar for [BUSINESS] for [MONTH], on [NETWORK], at [NUMBER] posts per week.

Audience: [PRECISE DESCRIPTION]
Goal for the month: [E.G.: get 10 quote requests]
What's happening on our side this month: [OUTINGS, TRADE SHOWS, JOB SITES, SEASONALITY, BEHIND THE SCENES]
Topics already covered recently: [LIST]

Distribute the posts among these four categories, without putting two identical ones in a row: proof (a real result or case), behind the scenes, answer to a common objection, committed point of view.

Present a table with: date, category, idea in one sentence, information I need to provide for the post to be written.
If a post relies on a fact you don't know, flag it in the last column instead of inventing it.

The last column is the most useful. It shows you at a glance which posts are waiting for a job site photo, a real number or a client's approval. A nonprofit will see, for example, that it's missing the number of volunteers at its collection drive, and will go get it instead of letting the AI make one up.

Hooks tested against a criterion, not at random

On most feeds, the text is cut off after a few lines. The first sentence therefore decides the rest. Asking for "10 hooks" produces ten phrasings of the same idea. Ask instead for different mechanics, then a critique.

Post topic: [TOPIC]
Reader: [READER]
Central fact: [VERIFIABLE FACT]

Write 8 first lines, 12 words maximum, each with a different mechanic: specific scene, real number drawn from the central fact, common mistake, contrarian opinion, question the reader is really asking, concrete comparison, confession, unexpected result.

Then rank them by this single criterion: can the reader guess what comes next without clicking? Discard the ones where the answer is yes, and explain why in one sentence.
Use no number that isn't in the central fact.

A restaurant owner announcing her new fall menu can thus go from "Discover our fall menu" to a line about the mushroom supplier who called her at 7 a.m. Provided that call actually happened: if you have no real fact to give, the AI will fabricate one that sounds right, and you'll have published a lie under your name.

Adapt a piece of content by channel without copy-pasting

A blog article or a webinar can feed several networks, provided you rethink the format for each. Rephrasing isn't enough: a story, a carousel and a text post don't follow the same reading logic.

Here is a source piece of content:
[PASTE THE TEXT OR TRANSCRIPT]

Voice sheet: [PASTE THE SHEET]

First extract the 3 most concrete ideas from this content, without adding any.
Then produce:
1. A LinkedIn post of 120 words maximum, built around a single idea.
2. An Instagram carousel of 6 slides: one sentence of 12 words maximum per slide, plus a note on the visual for each.
3. A short video script of about 30 seconds, with what's said and what's seen, written to be understood without sound.

Each format must start from a different idea. Flag any passage where you had to extrapolate from the source content.

If the result is shaky, do the steps separately: idea extraction first, then each format in a separate message. That's the principle of the prompt chain, and it often rescues an overloaded prompt.

What to check before you publish

None of these prompts spares you from proofreading. The AI can attribute to your product a feature it doesn't have, pick up a sensitive topic at the wrong time or slip in a promise you won't be able to keep. Check every fact, then ask yourself one last question: could a competitor sign this post without changing anything? If so, it's missing material.

Formats and features on social networks change often, so check the length and visual constraints in each app at the time you publish. For longer writing, like a sales page or an email sequence, you can also compare specialized prompts in the copywriting section of YouPrompt, where the excerpt and a real result are visible before you buy.

Start with the most profitable step: find your five best posts today and run the voice sheet prompt. You'll reuse its result in everything else.