Assessment Center - CAT Registration APIs

How to register for a PROMIS assessment through the API

Syntax

https://www.assessmentcenter.net/ac_api/2014-01/Assessments/{OID}{.xml or .json}
This will return a token that will be used for accessing the assessment requested.

Remarks

OID is the 'primary key' to the form.
The request header for the API takes optional parameters ('UID' and 'Expiration').
You can either GET or POST requests to this API.
UID = a user-defined id for this assessment instance.
Expiration = time limit for when the assessment should be completed by (in days).

API Home

Try it!

Sample code for https://www.assessmentcenter.net/ac_api/2014-01/Assessments

Javascript
C#
JSON Formatted Response
XML Formatted Response

<script langauge="javascript" src="jquery-1.7.1.min.js"></script>
<script language="javascript" src="crypto.js"></script>
<script type='text/javascript' version='1.3'>

var Server = https://www.assessmentcenter.net/ac_api;
var FormOID = "FFCDF6E3-8B17-4673-AB38-C677FFF6DBAF";  // Sample form -- replace with your FormOID

function startAssessment(FormOID) {
    $.ajax({
        url: Server + "/2014-01/Assessments/" + FormOID + ".json",
        cache: false,
        type: "POST",
        data: "UID=" + document.getElementById("UID").value,
        dataType: "json",

        beforeSend: function(xhr) {
            var bytes = Crypto.charenc.Binary.stringToBytes(document.getElementById("txtRegistration").value + ":" + document.getElementById("txtToken").value);
            var base64 = Crypto.util.bytesToBase64(bytes);
            xhr.setRequestHeader("Authorization", "Basic " + base64);
        },
    
        success: function(data) {
            var container = document.getElementById("Content");
            for (var k= container.childNodes.length - 1 ; k > -1; k--) {
                container.removeChild(container.childNodes[k])
            }
            container.appendChild(document.createTextNode("AssessmentID:" + data.OID));
            container.appendChild(document.createElement("br"));
            container.appendChild(document.createTextNode("User-defined ID:" + data.UID));
            container.appendChild(document.createElement("br"));
            container.appendChild(document.createTextNode("Expiration:" + data.Expiration));
        },
	
        error: function(jqXHR, textStatus, errorThrown) {
            document.write(jqXHR.responseText + ':' + textStatus + ':' + errorThrown);
        }
    })
}

Based on twillio example to call RESTful services. (http://www.twilio.com/docs/api/rest)

using System;
using System.Collections;
using System.Configuration;
using System.IO;
using System.Net;
using System.Web;
using System.Text;
using System.Text.RegularExpressions;

public class TestHarness
{
    static void Main(string[] args)
    {
        string REGISTRATIONID ="31839849-ECE0-4F5E-BEAE-3D655ED65E31";              // Sample registration -- replace with your RegistrationOID
        string TOKEN ="F3738486-5A7D-41EF-8044-DCBAF800E2D4";                       // Sample token -- replace with your TokenOID
        string FormOID = "FFCDF6E3-8B17-4673-AB38-C677FFF6DBAF";                    // Sample form -- replace with your FormOID
        string API_URL =  "https://www.assessmentcenter.net/ac_api/2014-01/Assessments/" + FormOID + ".json";
        string UID = "UID=" + HttpUtility.UrlEncode(args[0]) + "&";                 // Optional user-defined id
        string Expiration = "Expiration=" + HttpUtility.UrlEncode(args[1]) + "&";   // Optional expiration (default = 3 days)
        string data = UID + Expiration;

        string authstring = Convert.ToBase64String(Encoding.ASCII.GetBytes(String.Format("{0}:{1}", REGISTRATIONID, TOKEN)));
        ServicePointManager.Expect100Continue = false;
        Byte[] postbytes = Encoding.ASCII.GetBytes(data);
        WebClient client = new WebClient();
        client.Headers.Add("Authorization", String.Format("Basic {0}", authstring)); 
        client.Headers.Add("Content-Type", "application/x-www-form-urlencoded");    
        byte[] resp = client.UploadData(API_URL, "post", postbytes);
        Console.WriteLine(Encoding.ASCII.GetString(resp));
    }
}

// Requesting to administer FormOID "C0E737C9-EF7C-4842-8661-4B00F82C0FED"
// NOTE: "OID" is the AssessmentOID, not the FormOID
Request:https://www.assessmentcenter.net/ac_api/2014-01/Assessments/C0E737C9-EF7C-4842-8661-4B00F82C0FED.json

Response:

{
    "OID": "901A493B-7A6E-4711-B483-82AB100FE430",
    "UID": "",
    "Expiration": "10/21/2015 12:13:57 PM"
}

// Requesting to administer FormOID "C0E737C9-EF7C-4842-8661-4B00F82C0FED"
Request:https://www.assessmentcenter.net/ac_api/2014-01/Assessments/C0E737C9-EF7C-4842-8661-4B00F82C0FED.json

Response:

<?xml version="1.0" encoding="utf-16"?>
<Assessment OID="901A493B-7A6E-4711-B483-82AB100FE430" UID="" Expiration="10/21/2015 12:13:57 PM" />