Round Robin & knockout tournament

[Vavo77]

How can I create a knockout or Round robin tournament using lichess api?
I heard NoJoke mentioning it in his last stream.
Thank you.

[benediktwerner]

You can create games between players using https://lichess.org/api#operation/challengeCreate (for a single game) or https://lichess.org/api#operation/bulkPairingCreate (for many games) if you have their tokens. You can get tokens from players by letting them authorize via Oauth: https://lichess.org/api#tag/OAuth. You'll have to write the pairing logic yourself though. The #general-programming or #api-bots-boards channels on Discord generally are a better place to ask for help with the API. Though you'll certainly need a bit of programing experience to do something more complicated like this.