#RiotTechBlog 
Rioter @byrondover shares the unique ways that we leverage @SlackHQ. https://riot.com/3nO85rC pic.twitter.com/6iBk5zBdrT
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thanks for your answer. How would one add such buttons then? How does Riot do?
You're very welcome! It seems Riot built this using Docker and Jenkins, and are using Block Kit for the message payloads. You can test out Block Kit payloads and all the formatting that’s possible with that via Block Kit builder here: https://bit.ly/39VweId