Finding "Player search" feature

Yesterday, I joined a game on Roblox called “Friend checker” and they have a feature where you can search other players and it would show their RAP, friends, and if they’re online or not.

I want to know what the API is or the feature. Thanks!
Screen Shot 2022-10-10 at 7.50.52 PM

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You can achieve this with an API.
Here are some nice API’s you can use:
https://api.roblox.com/docs

For this, I would use /users/{userId}/friends

Here’s an example of what it returns:

[
    {
        "Id": 12345678,
        "Username": "user",
        "AvatarUri": "",
        "AvatarFinal": true,
        "IsOnline": true
    }
]

You can use this API to get a list of friends and their data.

Never seen this, how would I do that?

Use HttpService to make a get request to fetch info from the roblox site with a proxy

You can find the different api’s used to get user or friend information here