You can check OCR addon logs through myaccount portal web interface.
Log in to your account and go to Parsing Logs; then select the Resume Type as OCR.
Currently, we are not providing any value in API output for the same. There are no fields in the JSON output which indicate the type of add-ons and whether add-ons are on or off. As of now, there is only one way to check the OCR add-ons by checking the logs in the web interface manually.
You can always contact RChilli Support by creating an RChilli Helpdesk ticket or sending an email at email@example.com. The Support Team will help you in getting your OCR Parsing stats.