WebFinger

WebFinger is a protocol specified by the Internet Engineering Task Force IETF in RFC 7033 that allows for discovery of information about people and things identified by a URI. Information about a person might be discovered via an acct: URI, for example, which is a URI that looks like an email address.

WebFinger is specified as the discovery protocol for OpenID Connect, which is a protocol that allows one to more easily log in to various sites on the Internet.

The WebFinger protocol is used by federated software, such as GNU social, Diaspora, or Mastodon, to discover users on federated nodes and pods, as well as the remoteStorage protocol.

As a historical note, the name "WebFinger" is derived from the old ARPANET Finger protocol, but it is a very different protocol designed for HTTP.

The protocol payload is represented in JSON format.

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