Privacy policy

Last updated November 9, 2026. Castagent is made by mcstech, llc, Sarasota, Florida.

What we collect

• Store details from Shopify: store name, domain, currency, time zone and the store contact email (for failed-post alerts, which you can change).
• Product information you choose to post about: titles, descriptions, prices, images and stock levels.
• For revenue attribution: an order's id, total, currency, time and the landing page address it came from. We never store customer names, emails, phone numbers or addresses.
• The social accounts you connect: account name, picture and the access tokens the network issues. Tokens are encrypted at rest.
• Posts, captions and images you create, and click counts on tracked links (we don't store visitors' IP addresses or identities).

How we use it

Only to run Castagent for you: publishing the posts you create or approve, generating AI captions and images, tracking results, and billing. We don't sell data or use it for advertising.

Service providers

AI text is generated by Anthropic (Claude); AI images by Google (Gemini) and fal.ai. Only what the request needs is sent (for example product details and your prompt). We host on Fly.io and Neon (United States) and send email through Resend. Posts go to the social networks you choose.

Retention and deletion

If you uninstall, scheduled posts stop immediately and all store data is deleted 48 hours later when Shopify sends its deletion request. You can disconnect any social account at any time on the Accounts page, which deletes its tokens.

Contact

Questions or requests: support@castagent.app.