Confirmation about _fbc cookie generation

I only have Facebook CAPI right now, and I’m using stape-io’s Facebook Conversion API tag. There are no client-side Facebook pixels. It seems like I should pass fbclid as fbc to the pixel. However, I noticed one thing: _fbc cookie is also created. I did enable _fbp cookie generation on the server-side tag, so I’m wondering if it also generates _fbc cookie too? I’m not complaining cause it does help me add a fallback if fbclid doesn’t exist. Right now, it doesn’t affect my tracking, but I just want to confirm whether the tag actually does it.

The fbc should pass the click id (a parameter that is generated and added to the user url when the user clicks on Facebook ads).
FB tag set this parameter automatically in the user’s cookie. This works if the url of the page on which the event occurred contains the url query ‘fbclid’.

Usually you don’t need to pass it manually, it will be automatically picked up by the tag from the cookie. Just like the fbp parameter.