Choose your Zap Integration or Start a new Zapier integration.
Click on the Setup Authentication button.
Select the Authentication type API Key and click on the Save button.
Go to WordPress, Install the WordPress REST API Authentication plugin and go to Configure API Authentication tab and select the API Key Authentication method and click on the Save Configuration button.
Now in Zapier, configure your fields for the first step. Click on the Add fields button.
Fill the required details and click on the Add button. You can add multiple fields according to your requirements.
Now, Step 2 in which you need to configure the API which you want to request. Fill the REST API Endpoint and select the HTTP method. After then add the Authorization Header with value.
Now, Step 3 in which you can Test your authentication for which you need to add the WordPress user for that click on the Sign In to WordPress button.
You need to allow Zapier to access the WordPress account.
Once your account is successfully added to Zapier, you can click on the Test Authentication button.
On successful authentication you will find the WordPress posts in the response. Which you can use to fetch the details.
You can download WordPress REST API Authentication plugin using the following link.