# WebFinger Protocol used by [[Mastodon]] for something. > [!quote] WebFinger is used to discover information about people or other entities on the Internet that are identified by a URI using standard Hypertext Transfer Protocol (HTTP) methods over a secure transport. A WebFinger resource returns a JavaScript Object Notation (JSON) object describing the entity that is queried. The JSON object is referred to as the JSON Resource Descriptor (JRD). Webpage: [WebFinger](https://webfinger.net) RFC: [RFC 7033: WebFinger](https://www.rfc-editor.org/rfc/rfc7033) ## Links A short write-up on what webfinger entails: - [The Fediverse, And Custom Domains - Aeracode](https://aeracode.org/2022/11/01/fediverse-custom-domains/)