What it does
Everything a store needs to stay active on social, without leaving Shopify.
Write once, post everywhere
One composer for Facebook, Instagram, TikTok, Pinterest, LinkedIn, Threads, YouTube Shorts and X, inside your Shopify admin.
Captions native to each network
AI writes a version for every platform in your brand voice: hooks for Instagram, keywords for Pinterest, short and sharp for X.
Your real products in AI scenes
Put your actual product photo on a marble counter, a beach towel or a gift table. The product stays exactly as it is.
Posts that write themselves
New product, back in stock, price drop, low stock or a new sale: Castagent drafts the post and publishes it or waits for your OK.
See which posts sell
Every link is tracked. Results shows clicks, orders and revenue for each post and each network.
A claims check on every post
Flags wording that gets posts removed or brands in trouble, like disease claims on supplements, before anything goes out.
Pricing
Start free. Paid plans have a 7-day trial.
Free
Free
Write once and post to three accounts, with AI captions and a claims check on every post.
- 50 AI credits a month
- 3 social accounts
- 30 posts a month
- Compose once, post everywhere
- Scheduling and calendar
- AI captions for every platform
- Claims and policy check on every post
Starter
$19/month
Every network, AI images, click tracking, and posts that write themselves when your store changes.
- 500 AI credits a month
- 6 social accounts
- 150 posts a month
- Everything in Free, plus:
- AI images
- Store-event autoposts (new products, restocks, price drops, sales)
- Click tracking on every link
Growth
$49/month
See the orders and revenue each post brings in, and put your real products into AI scenes.
- 1,500 AI credits a month
- 14 social accounts
- 600 posts a month
- Everything in Starter, plus:
- Revenue attribution: orders and sales per post
- Your real product in AI lifestyle scenes
- Premium HD images
- Background removal
Pro
$99/month
A month of posts planned from your catalog in one click, plus the most credits and accounts.
- 4,000 AI credits a month
- 35 social accounts
- 1,500 posts a month
- Everything in Growth, plus:
- Plan my month: 30 days of posts from your catalog
Need more AI? Credit packs from $12 for 1,000 credits, billed through Shopify.