Right now, the base URL or anything that isn't a video is giving the generic Open Graph embed. I suggest that for the tag links, that the embed shows the name of the tag and potentially allow an image to be uploaded as a preview, for example - something akin to that. Likewise, for the base URL allow for it to be customizable with the header and potentially image and text. I understand you want to default to sharing the project's name and description and would suggest having that as an addition at the bottom of these if it matters to you.
Right now, the base URL or anything that isn't a video is giving the generic Open Graph embed. I suggest that for the tag links, that the embed shows the name of the tag and potentially allow an image to be uploaded as a preview, for example - something akin to that. Likewise, for the base URL allow for it to be customizable with the header and potentially image and text. I understand you want to default to sharing the project's name and description and would suggest having that as an addition at the bottom of these if it matters to you.