When setting up your Zap, you'll be asked to connect your Knack account.
You will be prompted to name your account and add your Knack Application ID and API Key. To locate these first login to your Knack account: https://builder.knack.com
Choose an app from your dashboard, and then click the “Settings” link from the top left and click the API and Code link from the left menu. You can copy the Application ID and API key and paste in the corresponding fields in the Zapier form:
Paste your Application ID and API key back into Zapier and click continue. If all goes well, you'll see a success message.