Channable
You can get that by logging in on channable.com, go to your company settings and select ‘channable API’.
Copy the token that is showed (once) in the box 'ew Channable API token generated'.
Using the pencil icons.
Search in Channable for a channel with the name 'Attalos' and fill the (required) fields.
For the product ID, use the field as defined in your product settings:
Run the feed and enter the URL in the products_url field in Attalos.