(For Merchants) Where can I locate my Merchant ID / API key? You can find your Merchant ID and API key in the Merchant Portal under the Add Zip as a Payment Options tab. Should you require further assistance or have questions, you can email our Merchant Experience team. Related articles (For Merchants) I’ve integrated Zip but it is not working, what should I do? How do I contact Zip Support? (For Merchants) How will my business benefit from Zip? (For Merchants) What is Zip and how does it work? Why have I received the message "Identify verification failed" when signing up?