A unique identifier is assigned to each user and channel in Flock. You will need it to, for example,

  • Send and receive messages to other users or to groups
  • Lookup group info or list of members

User identifiers are prefixed by u: whereas channel identifers are prefixed by g:.

  • Example of a user identifier: u:5bd391005e3c5cd3
  • Example of a channel identifier: g:c19b7ca2bafbea27

Bots use user identifiers.