There is no Purity app for BigCommerce. Add Purity's code with the Script Manager and use Purity add-to-cart buttons on your pages. Buyers pay on your Purity checkout, not BigCommerce's.
Open Website, choose BigCommerce under "Where do you sell today?", then follow these steps:
- Create a site key. It lets your site show live prices and stock. Use "Create a site key" or "Create a secret key" on the Website page.
- Copy this code. The Website page has this ready to copy.
- In BigCommerce: Storefront > Script Manager > Create a Script. Name it Purity, set Placement to Footer, Location to Storefront pages, Script type to Script, paste the code, and Save.
- Put this on any button or link that should add a product to the cart. Change YOUR-SKU to the product's SKU in Purity. The Website page has this ready to copy.
- Publish your site, then paste your site address below and choose "Check my site". Purity looks for the code on your page.
Connected looks like: Purity finds the code on your page and shows when your site last loaded your products.
Stock: the buttons read Purity's live stock every time a page loads, and orders are placed on your Purity checkout, so a sale takes stock off in Purity at once and sold-out products update on their own (Sold out, Pre-order or hidden, as you choose under "Stock on your website"). BigCommerce's own inventory is not updated; there is no Purity app for BigCommerce, so sell these products only through the Purity buttons.
Check the platform's rules on what can be sold before you build on it. Their rules: https://www.bigcommerce.com/terms/acceptable-use-policy/