Checkout links - Join Markt Docs

Checkout links are the lightest integration: a normal URL that lands the buyer on your store with a product (or cart) ready to purchase. Unlike a third-party hosted “checkout session” platform, Join Markt storefronts live on your subdomain or custom domain. Links therefore target that host.

Integration overview

When a customer opens a product or invoice link:

They land on your Join Markt storefront (or hosted checkout)
Cart / product context is already set
They complete payment with your connected methods
Delivery runs after settlement

No JavaScript SDK required for the basic case — use a button, anchor, email CTA, or ad destination.

HTML integration

<a
  href="https://{subdomain}.joinmarkt.com/products/{product-slug}"
  target="_blank"
  rel="noopener noreferrer"
>
  <span>Buy now</span>
</a>

On a custom domain:

<a href="https://shop.yourbrand.com/products/{product-slug}">Buy now</a>

Invoice / hosted checkout

For multi-item or scripted flows, create an order through your backend, then send the buyer to the hosted invoice:

https://joinmarkt.com/checkout/{invoiceId}

/checkout/[invoiceId] is served on the platform host and is not rewritten through store subdomains. Always use the platform origin for invoice URLs.

Optional parameters

Parameter	Use
UTM tags	Attribution in analytics
Coupon codes	If your theme / checkout reads them
Locale	If your theme supports it
Affiliate / referral	When your store has affiliates enabled

Keep links HTTPS-only in production.

When to use what

Need	Approach
Single product CTA in email / Discord	Product URL on store host
Embedded buy button on an external site	Embed SDK
Server-built cart with custom pricing	Create order server-side → invoice URL
Theme-native cart page	Theme cart / `checkout()` client

Example with marketing params

https://fivexx.joinmarkt.com/products/premium-key?utm_source=discord&utm_campaign=launch

⌘I

​Integration overview

​HTML integration

​Invoice / hosted checkout

​Optional parameters

​When to use what

​Example with marketing params

​Related

Integration overview

HTML integration

Invoice / hosted checkout

Optional parameters

When to use what

Example with marketing params

Related