If you have the lifetime subscription, you will get an API key immediately. You can check it from your account page
Example URL: https://api.leaked.site/?key=[key]&action=[action]&str=[str]
|geoip||Gets Geolocation Information About an IP.|
|btc||Get Current Bitcoin Pricing In 3 Currencies.|
|cloudflare||Checks Cloudflare Nameservers, Gives Crimeflare Links, And Checks If IP Is Leaked.|
Also, There is a free-to-use API that checks if a certian username, ip, email, and so on is a known Scammer.
Example URL: https://dreamninjas.eu/api/scammer.db.php?search=[str]
Return type for all of these APIs are JSON.
Read the Terms of Service
for more information on the rules of the API. If you don't follow them, your account can be terminated.