Just like the title like put in the big id “…”.
And then it gets all players in it.
Is this possible?
If we’re talking about other games, no, Roblox has taken action against this due to people targetting influencers(by looping through servers and checking). Even the images that the API returns of people’s avatars are limited now(if I’m not mistaken it only returns 5 per server) because people once used them as a comparison to the current influencer avatar to check in which server they are.
However, if this is about your own game, I’m pretty sure it’s possible for your servers to communicate with each other through something like MessagingService.
Fun fact: It’s still possible to find a target(let’s say an influencer) through the image comparison method, although it’s chance-based and it falls as the server size increases. For example, if we assume the average players per server to be 20, the chance you will find the target is 5/20 = 0.25 = 25%