If you don't have an API Key, please login or register for free tier access. Credits are not deducted for the first 1000 records of a match report.
The API Key is linked to your account and how we track usage.
If you would like to try a sample file, use CSV file https://dl.interzoid.com/csv/companies.csv and select a company name match on column number "1". This will not use any of your credits.