Argus is a platform which can be used to coordinate and share information between users in a seamless way in a Minecraft server.
There are a collection of services that are available for this purpose and each have their own documentation describing their function and other relevant information for development/usage.
Services that are for authentication of an Argus user. More information can be found here.
Services that are for management of Argus groups. More information can be found here.
Services that are used to relay the locations of players between users based on their groups. More information can be found here.
Services that are used to relay the status of players between users based on their groups. More information can be found here.