What is an API key?

An API key is a unique code for the API between your Mollie account and another website. With this key, the API recognises the user. You can enter a Test API key or Live API key when you’re connecting Mollie to a third party.


Test and Live API keys

You can use 2 different kinds of API keys: a Test API key and a Live API key:

  • Test API key: With this API key, you can test the connection between a website and Mollie. You can test transactions without paying a fee to us.
  • Live API key: You can use this API key to process real transactions. After using this key to connect the two websites, your customers can make payments.


Where can I find the API key?

  1. Log in to your Mollie Dashboard
  2. Go to Developers > API keys
  3. Click on Copy.


I changed my website profile. Do I need a new API key?

When you make changes to your website profile, you do not need to get a new API key. Your live API key remains valid and the link between your Mollie account and your webshop will remain the same.


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