[AccessD] Hooking into APIs of supplemental vendors

Example:

http://trumpia.com/main/Developer_SMS_Gateway_API.php

This was the message I got. I went to the Get Started section and started
reading about a whole variety of things I had no idea what I was looking at.
So I really don't know what an API is, I guess, I thought they were code
snippets that made things happen and that if I looked at them long enough
they would make sense to me. Apparently not. The email I got from some guy I
thought was going to show me how they work, included:

"...  Customers that are interested in our API are recommended to review the
API Functions to confirm they are compatible..... 

Well I looked at them and then made no sense to me:

Example Resource Request (Adding a Contact)
To demonstrate how our REST API works, let's take a look at how
subscriptions, or contacts, are added to your Trumpia database. First, you
would send the following resource request URI using the PUT method:

    PUT http://api.trumpia.com/rest/v1/{user_name}/subscription

    {
      "list_name" : "restapi",
      "subscriptions" : 
      [
        {
          "first_name":"firstname01",
          "last_name":"lastname01",
          "email":"email01 at address.com",
          "aim":"testaim",
          "mobile":
          {
            "number":"1010101010",
            "country_code":"1"
          },
          "voice_device" : "mobile"
        },
        {
          "first_name":"firstname02",
          "email":"email02 at address.com",
          "landline":
          {
            "number":"1234567890",
            "country_code":"1"
          },
          "voice_device" : "landline"
        }
      ]
    }

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