Xively request log subscriber. It takes two arguments: username and a master API key. It requires Ruby version 1.9.3.

xively_request_log.rb

require 'json'
require 'socket'

abort "Usage: #{$0} username xi_api_key" if ARGV.size != 2

username = ARGV[0]
xi_api_key = ARGV[1]

xi = TCPSocket.open('api.xively.com', 8081)
xi.puts({
    method: "subscribe",  
    resource: "/users/#{username}/requests",  
    headers: { "X-ApiKey" => "#{xi_api_key}" },  
}.to_json)

while line = xi.gets
  puts line
end
xi.close

xively_request_log.sh

#!/bin/sh
# You can do this with telnet:
#     telnet 'api.xively.com' 8081
#     Trying 64.94.18.120...
#     Connected to api.xively.com.
#     Escape character is '^]'.
#     {"method":"subscribe", "resource":"/users/<your_username>/requests", "headers":{ "X-ApiKey":"<your_api_key>" }}
# And you will get response similar to this followed by many log lines:
#     {"status":200,"resource":"/users/errordeveloper/requests"}
#
# Here is the version of this that is using netcat.
if [ ! $# = 2 ]
then
  echo  "Usage: $0 <username> <api_key>"
  exit 1
fi

json_call='{ "method":"subscribe", "resource":"/users/%s/requests", "headers":{ "X-ApiKey":"%s" }}\n'

tail -f <<< $(printf "$json_call" $1 $2) | nc api.xively.com 8081