MoneyMotion

MoneyMotion is a hosted checkout session.

What you need

Field	Where to find it
API key	MoneyMotion developer dashboard. Starts with `mk_live_` or `mk_test_`
Webhook secret	shown when you create the webhook

Create an API key

In the MoneyMotion developer dashboard, create an API key.

Add the webhook

Create a webhook for checkout_session:complete with this URL:

https://dash.joinmarkt.com/api/moneymotion/webhook

Connect in Join Markt

Go to Payment methods → MoneyMotion. Paste the API key and the webhook secret.

Turn it on

Turn on Sandbox if you use an mk_test_ key. Enable Active at checkout, then save.

The order is marked paid only when the webhook arrives. Never deliver before that.