Not showing my custom api in wsdl(url) and web service list?

Question

I have created Api in my module, when I accessing through coding it is working fine, but in url (wsdl format) & web services list (Back-End) are not showing. If I give my custom Api to others, it should be in web services list because we will provide permissions for that. So, how can I configure the custom api in wsdl & web service list?

my code is:

local->Course->Mca->etc->api.xml

<?xml version="1.0"?>
<config>
    <api>
        <resources>
            <mca translate="title" module="mca">
                <model>mca/api</model>
                <title>MCA Student Resources</title>
                <methods>
                    <create translate="title" module="mca">
                    </create>
                </methods>
                <faults module="mca"><!-- module="mca" specifies the module which will be used for translation. -->
                    <data_invalid> <!-- if we get invalid input data for customers -->
                        <code>100</code >
                        <!-- we cannot know all the errors that can appear, their details can be found in error message for call -->
                        <message>Invalid Student data. Details in error message.</message>
                    </data_invalid>

                </faults>
            </mca>
        </resources>
    </api>
</config>

local->Course->Mca->Model->Api.php

<?php
class Course_Mca_Model_Api extends Mage_Api_Model_Resource_Abstract
{
    public function create($stuData)
    {
        return $stuData . ' My Custom Student Message';
    }

    public function info($stuId)
    {
    }

    public function items($filters)
    {
    }

    public function update($stuId, $stuData)
    {
    }

    public function delete($stuId)
    {
    }
}

thanks in advance.

Answer 1

To allow access to your api via the roles section on the of the "web services" section you will need to update your code to include the <acl> node in-between api and resources.

<?xml version="1.0"?>
<config>
    <api>
        <acl>
            <resources>
                <mca translate="title" module="mca">
                    <model>mca/api</model>
                    <title>MCA Student Resources</title>
                    <methods>
                        <create translate="title" module="mca">
                        </create>
                    </methods>
                    <faults module="mca"><!-- module="mca" specifies the module which will be used for translation. -->
                        <data_invalid> <!-- if we get invalid input data for customers -->
                            <code>100</code >
                            <!-- we cannot know all the errors that can appear, their details can be found in error message for call -->
                            <message>Invalid Student data. Details in error message.</message>
                        </data_invalid>
                    </faults>
                </mca>
            </resources>
        </acl>
    </api>
</config> 

Answer 2

Create a file calles app/code/local/Course/Mca/etc/wsdl.xml and compare its contents with one of those in core.

find app/code/core/Mage -iname 'wsdl.xml'