Please use the Fetch action of the Web Connector.

https://www.microfocus.com/documentation/idol/IDOL_12_0/WebConnector/Help/index.html#Actions/Fetch/_CN_Synchronize.htm?TocPath=Reference|Actions|Fetch|_____3

Thanks - looking at that option it appears that will kick off a sync for a fetchtask.  There is an option to specify an identifier but unless that identifier can be be a URL I'm looking to insert new content without recrawling the whole site or even a section.

Can the call look something like

host:port/action=Fetch&FetchAction=Synchronize&Identifiers=<new_url>

Or do I want to create a dummyFeeder fetchtask and use 

host:port/action=Fetch&FetchAction=Synchronize&TaskSection=Feeder&[Feeder]Url0=<new url>

You will need to create the Config parameter to set the new URL and other parameters such as MaxPages=1 so that only that page is crawled. 

The config parameter expects the WebConnector.cfg task config section as a base 64 encoded string 

The configuration below will only index one URL. So, if the following is the FetchTask

Vinay,

Thank you for your response.  The first answer got me where I needed.  The final solution that we will be implementing is as follows.

To add a URL to the IDOL database issue the following command:

Note that the URLs supplied need to be URLEncoded.

The fetch task is defined as follows:

You only need to use base64 encoding if you are supplying a whole fetch task.

Note to find the port number look in the webconnector.cfg file in the [server] section for the port number.  You may need to add a line for Access-Control-Allow-Origin=<cms-server-name>  (or * if you don't mind who can affect your webconnector (not recommended for production!)