Jsonbin.io example usage - this is how I sync minecraft between computers without overwriting newer data with older data

Sync-MultiMC.ps1

Class JsonBin {
    [string]$BinID
    [string]$SecretKey = '$xyz'
    [object]$Data
    JsonBin($binID){
        $this.BinID = $binID
        $this.Get()
    }
    Get(){
        $res = Invoke-RestMethod -Method Get -Uri "https://api.jsonbin.io/b/$($this.BinID)/latest" -Headers @{'secret-key'=$this.SecretKey}
        if(-not $res.success){
            Write-Error "Response did not contain required 'success' property! Please add it. Here's what we had: $($res | ConvertTo-Json)" -ErrorAction:Stop
        }
        $this.Data = $res
    }
    Put(){
        Invoke-RestMethod -Method Put -Uri "https://api.jsonbin.io/b/$($this.BinID)" -Headers @{'Content-Type'='application/json';'secret-key'=$this.SecretKey} -Body $($this.Data | ConvertTo-Json)
    }
}

Function Sync-MultiMC {
    [CmdletBinding()]
    Param(
        [Parameter(ParameterSetName = 'Upload', Mandatory = $true)]
        [switch]$Up,
        [Parameter(ParameterSetName = 'Download', Mandatory = $true)]
        [switch]$Down
    )
    Set-AllowedHosts DTGAME, DTRANCH, ENVY10
    $path = @{
        'DT1'  = 'C:\Bin\MultiMC';
        'DT2' = 'C:\Users\jh\Documents\bin\MultiMC';
        'LT1'  = 'C:\Bin\MultiMC'
    }[$env:COMPUTERNAME]
    $b = [JsonBin]::new('abc')
    Write-Output $b.Data
    if ($Up) {
        if(-not ($b.Data.last_device -eq $env:COMPUTERNAME)){
            Write-Error "You can't upload from this device! First upload from $($b.Data.last_device)" -ErrorAction:Stop
        }
        
        Write-Host 'Syncing client data up...'
        rclone sync $path b2p:multimc1/bin/MultiMC -v --transfers=8 --fast-list -P
        $b.Data.last_device = $env:COMPUTERNAME
        $b.Data.last_action = 'upload'
        $b.Put()

    } elseif ($Down) {
        if($b.Data.last_action -eq 'download'){
            Write-Error "You already downloaded to $($b.Data.last_device), please upload from that PC first!" -ErrorAction:Stop
        }
        Write-Host 'Syncing client data down...'
        rclone sync b2p:syncit/bin/MultiMC $path -v --transfers=8 --fast-list
        $b.Data.last_device = $env:COMPUTERNAME
        $b.Data.last_action = 'download'
        $b.Put()
    }
}