How to Create Social Media Posts for an Ecommerce Brand with AI

Yes, AI can write social media posts for an ecommerce brand, and it’s good at it when you give it the right inputs. Without them, you get generic posts that could belong to any store. This guide gives you a method that keeps posts specific, accurate and on-brand.

1. Pick three to five content pillars

Pillars are the recurring themes of your feed. They stop you asking AI “write a post” with no direction. For a store, a good set might be:

• Problem and solution: the problem your product solves, in the customer’s words.
• Product in use: how and when people use it, with real details.
• Proof: genuine reviews, before-and-after results, or questions customers actually ask (never invented ones).
• Behind the scenes: how the product is made, packed or chosen.
• Offers: launches, bundles and seasonal promotions, used sparingly.

2. Write a product fact sheet

AI can’t know what makes your product different. Give it a short fact sheet for each product: what it is, who it’s for, the main benefit, three specific features, price, what’s in the box, and any claims you’re allowed to make. Every post is then built from facts you’ve checked, which also keeps you away from claims you can’t support.

3. Use a prompt you can reuse

Keep one prompt and change only the inputs:

You write social media posts for [brand], an online store selling [category].
Voice: [3 adjectives, e.g. warm, practical, no hype].
Audience: [who buys, and what they care about].

Write 5 [Instagram / Facebook / TikTok] captions for the pillar "[pillar]".
Use only the facts below. Don't invent reviews, numbers or health claims.
Each caption: a hook in the first line, 2–4 short lines, one call to action.
Suggest an image idea for each caption.

Product facts:
[paste the fact sheet]

Any chat assistant works with this prompt, such as ChatGPT or Claude. If your store runs on Shopify, Sidekick can also create content inside your admin, and Shopify’s Help Center says it can create blog posts, product descriptions and images. Our free AI Prompt Generator helps you build prompts like this one.

4. Create images you’re allowed to use

Your own product photos work best, because customers want to see the real product. AI images are useful for backgrounds, seasonal scenes and graphics around those photos.

• Design tools such as Canva help you turn photos and captions into on-brand templates.
• If you generate images, check the rules for commercial use. Adobe states that outputs from its own Firefly models are safe for commercial use, and that you’re responsible for deciding whether outputs from partner models fit your project.
• Never use AI to show your product doing something it can’t, or results it doesn’t deliver.

5. Tag every link so you know what sells

A post that gets likes but no sales tells you less than you think. Add UTM parameters to every link so Google Analytics shows which posts bring visits and orders, for example utm_source=instagram&utm_medium=social&utm_campaign=autumn_bundle. Build them in seconds with our free UTM Builder, and see the UTM parameters guide for a naming convention that keeps reports clean.

The card people see when you share a product link (image, title and description) comes from the page’s Open Graph tags. Many store platforms and themes add these automatically; if yours doesn’t, or you want to check what they say, our Open Graph Tag Generator builds them with a live preview.

6. Review before you post

• Is every fact in the post on your fact sheet?
• Are there any health, safety, results or “best” claims you can’t back up?
• Does it sound like your brand, not like a generic AI post?
• Is the price or offer correct, with an end date if it’s a promotion?
• Does the link have UTM tags and go to the right page?

A simple weekly routine

1. Monday (30 minutes): choose the week’s products and pillars, then generate 10 to 15 captions with the prompt.
2. Edit: cut the weakest half and rewrite hooks in your own words.
3. Design: pair each caption with a real photo or template.
4. Schedule: post at a steady rhythm rather than all at once.
5. Friday: check which posts brought clicks and sales, and make more like those next week.

For product pages, use the same fact-first approach in our guide to writing product descriptions with AI.