# 3. PSP Integration
**Complete the following steps:**
1. Go to Settings
2. Choose “Billing”
3. In the newly opened window, choose the PSPs you will use to collect money
### **1) Stripe**
1. Click the **+ button** next to the **PSPs** section and **choose Stripe** from the list of integrations.
2. To set up the integration with Stripe, you will need to enter your **Key** and **Secret**.
3. Follow up on the instructions in the Platform
* Open your Stripe Dashboard and navigate to the "Developers" page. Find "Webhooks" in the tabs list and select it. Click the designed button to add an endpoint URL. Next, follow your unique, personalized link **available on the platform.**
* For the next step, add the events to listen to by selecting the following list of 9 events:
* charge.refunded
* charge.succeeded
* charge.updated
* setup\_intent.succeeded
* source.canceled
* source.chargeable
* payment\_intent.succeeded
* payment\_method.attached
* payment\_method.detached
* Save these settings by clicking the "Add endpoint" button to complete the Stripe webhook setup.
### **2) PayPal**
To integrate with PayPal, you will need to provide the following details:
* Endpoint
* Username
* Password
* Checkout
* Signature
### **3) Cardknox**** (pending)**
To integrate with Cardknox, you will need to provide the **X-key**
### **4) Mollie**
To integrate with Cardknox, you will need to provide the **API Key**
{% hint style="warning" %}
If you plan to use only the Subscription type, PSP is not needed
{% endhint %}
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