Get the current price in USD from SnapSwap (essentially, how many dollars it costs to buy 1 XRP).

xrp_price.rb

#!/usr/bin/env ruby
require 'json'
require 'yaml'

ripple=YAML.load_file("ripple.yml")
server=ripple["server"]["api"]
snapswap=ripple["address"]["snapswap"]
bitstamp=ripple["address"]["bitstamp"]
info="/v1/accounts/#{snapswap}/payments/paths/#{snapswap}/1.0+XRP"
endpoint="#{server}#{info}"

cmd_curl=`curl -H "Content-Type: application/json" "#{endpoint}"`
output=JSON.parse(cmd_curl)
pays= output["payments"]
pays.each do |pay|
  source= pay["source_account"]
  pay_this= pay["source_amount"]
  currency= pay_this["currency"]
  amount= pay_this["value"]
  if currency=="USD"
    puts amount
  end
end