https://github.com/brndd/pol-discord-webhook

This package has some convenience functions for sending data to Discord webhooks using the HTTPRequest EScript function. It supports both simple messages and embeds, which can contain more complicated formatting like this: https://i.imgur.com/gxbOy9u.png

See the GitHub readme for more details -- I'll not repeat them here because I would almost certainly forget to keep this post up to date.

GitHub is also where you'll want to go to download it.