Check Cryptocurrencies Price and Amount Coinbase Wallet with Powershell

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Powershell script to check cryptocurrencies current prices and wallet amounts of Coinbase account wallet through Coinbase API.
Save the script and before run fill mandatory parameters (api key and secret key generated from Coinbase account) and change base currency to account default currency.

Example:

.\cryptobalance.ps1 -api_key 1234567890abcdef -secret_key 1234567890abcdefghijklmnopqrstuv -basecurrency EUR -cryptos "BTC", "ETH", "LTC", "BCH"
<#
.SYNOPSIS 
Retrieve current price and wallet amount of cryptocurrencies from Coinbase account and coinbase API.
See Coinbase API documentation here: https://developers.coinbase.com/api/v2.
REQUIREMENTS: Powershell and Windows 7 at least.
Simply change api_key, secret_key and basecurrency (to the default currency of your account) before running cryptobalance.ps1.
To create API and SECRET key go to your account preferences in Coinbase and follow the procedure.

.EXAMPLE
Run .\cryptobalance.ps1 -api_key 1234567890abcdef -secret_key 1234567890abcdefghijklmnopqrstuv -basecurrency EUR -cryptos "BTC", "ETH", "LTC", "BCH"

.NOTES 
Name: bitbalance.ps1
Author: Marco Braidotti 
Version History 
    3.0 - 21/02/2018
#>

    Param(
        [Parameter(Mandatory=$true)][String] $api_key = '',  #change with your api key generated on your Coinbase account settings API section
        [Parameter(Mandatory=$true)][String] $secret_key = '', #change with your secret key generated on your Coinbase account settings API section
        [String] $basecurrency = 'EUR', #change with your desired fiat currency
        [String[]] $cryptos = @("BTC", "ETH", "LTC", "BCH") #change with your desired criptos
        )

try {
    
$totalbalance = 0

foreach ($crypto in $cryptos) {

    $urlAPICryptoPrice = 'https://api.coinbase.com/v2/prices/' + $crypto + '-' + $basecurrency + '/spot'
    $CryptoPrice = ((Invoke-WebRequest $urlAPICryptoPrice | ConvertFrom-Json).data).amount

    $accounts = 'https://api.coinbase.com/v2/accounts'
    $time = 'https://api.coinbase.com/v2/time'
    $epochtime = [string]((Invoke-WebRequest $time | ConvertFrom-Json).data).epoch

    $method = 'GET'
    $requestpath = '/v2/accounts'

    $sign = $epochtime + $method + $requestpath
    $hmacsha = New-Object System.Security.Cryptography.HMACSHA256
    $hmacsha.key = [Text.Encoding]::UTF8.GetBytes($secret_key)
    $computeSha = $hmacsha.ComputeHash([Text.Encoding]::UTF8.GetBytes($sign))

    $signature = ([System.BitConverter]::ToString($computeSha) -replace "-").ToLower()

    $header = @{
        "CB-ACCESS-SIGN"      = $signature
        "CB-ACCESS-TIMESTAMP" = $epochtime
        "CB-ACCESS-KEY"       = $api_key
    }

    $result = Invoke-WebRequest $accounts -Headers $header -Method Get -ContentType "application/json"
    $wallets = $result.Content | ConvertFrom-Json


    foreach ($wallet in $wallets.data.balance) {
        if ($wallet.currency -eq $crypto) {
            $total = [math]::Round([Double]$wallet.amount * $CryptoPrice, 2)
        }
    }

    $totalbalance += $total
    Write-Host $crypto "Current Price:" $CryptoPrice $basecurrency "- Wallet Amount:" $total $basecurrency -ForegroundColor Yellow

}
$totalfiat = (((Invoke-WebRequest $accounts -Headers $header -Method Get -ContentType "application/json").Content | ConvertFrom-Json).data | Where-Object {$_.type -match 'fiat'  } | Select-Object balance).balance.amount
write-host "Fiat Total Amount:" $totalfiat $basecurrency -ForegroundColor Yellow

$amount = $totalbalance + $totalfiat
write-host "Wallet Total Amount:" $amount $basecurrency -ForegroundColor Green

}
catch [Exception] {
    Write-Host $_.Exception.Message
  exit
}

 

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