Twake Blocks and Elements are fully compatible with the Slack implementation here: https://api.slack.com/block-kit.
We define multiple additional block types that allows us to attach other resources types to our messages.
You can find a list of available blocks for Twake here:
Blocks can be put into surfaces, messages are the most common surface but we also offer modal and tabs as surface. See more on our yet-to-come developers Api documentation.