Retrieve Salesforce Daily API Request Limit

WebService static string GetAPIUsage() {
 PageReference pr = new PageReference('/00D20000000HsCQ');//use id of setup page
 pr.setRedirect(false);
 String result = pr.getContent().toString();
 Integer start_index = result.indexOf('API Requests, Last 24 Hours', 1) + 52;
 Integer end_index = result.indexOf ('<', start_index);
 result = result.substring(start_index, end_index);
 result = result.replaceAll(' ', '');
 return result; < br />}

Does anyone know how to pass SOAP or REST retrieval SFDC daily request api limit? I don’t see any requirements. Currently, I have to access this information on the company information page. I want to retrieve this information at the code level for batch processing.

Thank you!

We use custom code to solve this problem:

WebService static string GetAPIUsage( ) {
 PageReference pr = new PageReference('/00D20000000HsCQ');//use id of setup page
 pr.setRedirect(false);
 String result = pr.getContent().toString ();
 Integer start_index = result.indexOf('API Requests, Last 24 Hours', 1) + 52;
 Integer end_index = result.indexOf('<', start_index);
 result = result.substring(start_index, end_index);
 result = result.replaceAll(' ', '');
 return result; 
}

Hope It helps.

Regards, Lucas