CatLeaks is an online service focused on searching Minecraft usernames and related information. Its website presents a Minecraft search engine and a database lookup tool, with results that may include account status, associated IP addresses, location or internet service provider details, and links between usernames and IPs. The site also advertises a separate CAT+ search for passwords and user credentials, which it says is restricted to members with the CAT+ rank.

CatLeaks offers paid CAT+ memberships, available for one month or for lifetime access, as well as API access sold in weekly, monthly, and lifetime plans. Additional listed services include unbanning and removing information from the website. Users can sign in through Discord, contact staff or support through the platform’s Discord server, and view search history and account settings. The site also promotes Discord server advertising and includes a changelog describing visual and audio updates. Its interface provides language, sound, cursor, and performance preferences.