There are two different types of API integrations you can set up in your Clickatell account:
Basic HTTP API - Ideal if you are planning on using SMS as your only channel.
One API - Utilize both WhatsApp and/or SMS channels without having to program them individually. Future-proof your implementation as Clickatell continues to add support for additional channels.
You will set up an API as part of the setup wizard when creating a new SMS or WhatsApp integration. WhatsApp integrations will always make use of the One API, whereas with new SMS setups you will have a choice between the two API types.
Once an API integration of any type is created, it is added to your API integrations table. To view a list of all integrations in your account, navigate to My Workspace and select the API Integrations card.
To view and/or update the details of a specific API, simply select it from the table.
Click 'Update Changes' to effect any edits you make.