Groups

C→S 2991 - RequestGuildInfo

Nitro: GROUP_INFO - Guild→GROUP. Source: RequestGuildInfoEvent, GroupInformationComposer

Requests detailed information about a specific guild by ID.

Body: (empty)

C→S 367 - RequestOwnGuilds

Nitro: GROUP_MEMBERSHIPS

Source: RequestOwnGuildsEvent, CatalogGroupsComposer

Field	Type	Notes
(empty)	-	No body fields read

Requests the list of guilds the current user is a member of.

C→S 39 - SearchRoomsInGroup

Nitro: MY_GUILD_BASES_SEARCH Source: SearchRoomsInGroupEvent, MyGuildBasesSearchMessageComposer

Requests the list of rooms that belong to guilds the current user is a member of.

Body: (empty)

Requests a list of guild rooms the current user's guilds are based in. No parameters.

C→S 21 - GetHabboGuildBadgesMessage

Nitro: GROUP_BADGES

Source: GetHabboGuildBadgesMessageEvent, GetHabboGroupBadgesMessageComposer

Field	Type	Notes
(empty)	-	No body fields read

Requests badge data for the guilds the current user belongs to.

C→S 230 - RequestGuildBuy

Nitro: GROUP_BUY

Source: RequestGuildBuyEvent, GroupBuyComposer

Field	Type	Notes
name	string	Guild name (word-filtered)
description	string	Guild description (word-filtered)

Notes: Arcturus checks catalog.guild.hc_required config. If HC is required and the user is not a club member, the purchase is rejected before reading badge data.

Submits a guild purchase request with the proposed name and description.

C→S 798 - RequestGuildBuyRooms

Nitro: GROUP_CREATE_OPTIONS

Source: RequestGuildBuyRoomsEvent, GroupBuyDataComposer

Field	Type	Notes
(empty)	-	No body fields read

Notes: Requests the list of rooms the user owns that can be used as a guild base.

Requests the list of rooms the user owns that can be used as a guild base room.

C→S 998 - RequestGuildJoin

Nitro: GROUP_REQUEST - Guild→GROUP; Join→REQUEST. Source: RequestGuildJoinEvent, GroupJoinComposer

Submits a request to join a guild by ID; depending on the guild's join policy, this either adds the user immediately or creates a pending membership request.

Body: (empty)

C→S 3386 - GuildAcceptMembership

Nitro: GROUP_REQUEST_ACCEPT

Source: GuildAcceptMembershipEvent, GroupMembershipAcceptComposer

Field	Type	Notes
guildId	int	ID of the guild
userId	int	Account ID of the applicant to accept

Accepts a pending membership application for a guild.

C→S 1894 - GuildDeclineMembership

Nitro: GROUP_REQUEST_DECLINE

Source: GuildDeclineMembershipEvent, GroupMembershipDeclineComposer

Field	Type	Notes
guildId	int	ID of the guild
userId	int	Account ID of the request to decline

Declines a pending membership application for a guild.

C→S 3593 - GuildConfirmRemoveMember

Nitro: GROUP_MEMBER_REMOVE_CONFIRM

Source: GuildConfirmRemoveMemberEvent, GroupConfirmRemoveMemberComposer

Field	Type	Notes
guildId	int	ID of the guild
userId	int	Account ID of the member to confirm removing

Confirms removal of a member from a guild (second step of the remove flow).

---

C→S 593 - GuildRemoveMember

Nitro: GROUP_MEMBER_REMOVE

Source: GuildRemoveMemberEvent, GroupRemoveMemberComposer

Field	Type	Notes
guildId	int	ID of the guild
userId	int	Account ID of the member to remove

Removes a member from a guild.

C→S 1004 - RequestGuildManage

Nitro: GROUP_SETTINGS

Source: RequestGuildManageEvent, GroupSettingsComposer

Field	Type	Notes
guildId	int	ID of the guild to manage

Requests the management data for a guild (settings, colours, badge parts).

C→S 312 - RequestGuildMembers

Nitro: GROUP_MEMBERS - Guild→GROUP. Source: RequestGuildMembersEvent, GroupMembersComposer

Requests a paginated, optionally filtered member list for a guild.

Body:
  guildId:   int
  page:      int
  query:     string

C→S 813 - RequestGuildParts

Nitro: GROUP_PARTS - Guild→GROUP. Source: RequestGuildPartsEvent, GroupBadgePartsComposer

Requests the full catalogue of available guild badge parts (base shapes, symbols, and colour palettes) for the badge editor.

Body: (empty)

C→S 3137 - GuildChangeNameDesc

Nitro: GROUP_SAVE_INFORMATION

Source: GuildChangeNameDescEvent, GroupSaveInformationComposer

Field	Type	Notes
guildId	int	ID of the guild (implied from handle context)
newName	string	New guild name (word-filtered)
newDesc	string	New guild description (word-filtered)

Saves a new name and description for a guild.

C→S 3435 - GuildChangeSettings

Nitro: GROUP_SAVE_PREFERENCES

Source: GuildChangeSettingsEvent, GroupSavePreferencesComposer

Field	Type	Notes
guildId	int	ID of the guild
whoCanJoin	int	Join policy (0 = open, 1 = request, 2 = locked)
showOnlineMembers	int	0 = rights required, 1 = all members; read as == 0 boolean

Saves guild join policy and online member visibility settings.

C→S 1764 - GuildChangeColors

Nitro: GROUP_SAVE_COLORS

Source: GuildChangeColorsEvent, GroupSaveColorsComposer

Field	Type	Notes
guildId	int	ID of the guild
colorOne	int	Primary color index
colorTwo	int	Secondary color index

Saves the primary and secondary colour selections for a guild.

C→S 1991 - GuildChangeBadge

Nitro: GROUP_SAVE_BADGE

Source: GuildChangeBadgeEvent, GroupSaveBadgeComposer

Field	Type	Notes
guildId	int	ID of the guild
count	int	Number of badge parts that follow
parts[]	repeated	Per part: id:int, color:int, position:int

Saves a new badge design (part IDs, colours, positions) for a guild.

C→S 2894 - GuildSetAdmin

Nitro: GROUP_ADMIN_ADD

Source: GuildSetAdminEvent, GroupAdminGiveComposer

Field	Type	Notes
guildId	int	ID of the guild
userId	int	Account ID of the member to promote

Promotes a guild member to admin rank.

C→S 722 - GuildRemoveAdmin

Nitro: GROUP_ADMIN_REMOVE

Source: GuildRemoveAdminEvent, GroupAdminTakeComposer

Field	Type	Notes
guildId	int	ID of the guild
userId	int	Account ID of the member to demote

Demotes a guild admin back to regular member rank.

C→S 1134 - GuildDelete

Nitro: GROUP_DELETE

Source: GuildDeleteEvent, GroupDeleteComposer

Field	Type	Notes
guildId	int	ID of the guild to delete

Permanently deletes a guild. Only the guild owner can do this.

C→S 3549 - GuildSetFavorite

Nitro: GROUP_FAVORITE - Guild→GROUP; Set dropped. Source: GuildSetFavoriteEvent, GroupFavoriteComposer

Sets a guild as the user's favourite, displaying its badge on their room unit.

Body: (empty)

---

C→S 1820 - GuildRemoveFavorite

Nitro: GROUP_UNFAVORITE

Source: GuildRemoveFavoriteEvent, GroupUnfavoriteComposer

Field	Type	Notes
guildId	int	ID of the guild to un-favourite

Removes a guild from the user's favourite guilds list.

C→S 1855 - GuildForumMarkAsRead

Nitro: UPDATE_FORUM_READ_MARKER Source: UpdateForumReadMarkerMessageComposer

Field	Type	Notes
count	int	Number of forum-read marker entries
[count × k]	int	Thread / post ID
[count × _arg_2]	int	Forum / group ID
[count × _arg_3]	bool	Read marker value

Updates the read marker for one or more guild forum threads/posts.

C→S 2908 - RequestPromotedRooms

Nitro: GET_UNREAD_FORUMS_COUNT

Source: RequestPromotedRoomsEvent, GetUnreadForumsCountMessageComposer

Field	Type	Notes
(empty)	-	No body fields read

Notes: Nitro name GET_UNREAD_FORUMS_COUNT suggests this fetches unread forum counts, but the Arcturus handler is RequestPromotedRoomsEvent in the navigator package - discrepancy between Nitro intent and Arcturus routing.

Requests the unread forums count. Note: Arcturus routes this to RequestPromotedRoomsEvent - naming discrepancy with Nitro.

C→S 882 - ApproveAllMembershipRequests

Nitro: APPROVE_ALL_MEMBERSHIP_REQUESTS Note: No Arcturus handler - Nitro only. Source: ApproveAllMembershipRequestsMessageComposer

Field	Type	Notes
groupId	int	Guild ID whose pending membership requests should all be approved

Approves all pending membership requests for a guild in one operation. Nitro-only.

C→S 2864 - GroupUnblockMember

Nitro: GROUP_UNBLOCK_MEMBER Note: No Arcturus handler - Nitro only. Source: UnblockGroupMemberMessageComposer

Field	Type	Notes
groupId	int	Guild ID
userId	int	User ID of the member to unblock

Unblocks a previously blocked guild member. Nitro-only.

C→S 2930 - GuildBaseSearch

Nitro: GUILD_BASE_SEARCH Note: No Arcturus handler - Nitro only. Source: GuildBaseSearchMessageComposer

Field	Type	Notes
k	int	Guild / group ID to search base rooms for

Searches for guild base rooms by name or category. Nitro-only.

Searches for guild base rooms by guild ID. Nitro-only.

S→C 1702 - GuildInfo

Source: GuildInfoComposer, GroupInformationEvent

Delivers full details for a guild: name, description, badge, owner, member counts, and whether the requesting user is a member or owner.

Body:
  guildId:       int
  name:          string
  description:   string
  roomId:        int
  badge:         string
  created:       string
  ownerId:       int
  ownerName:     string
  isOwner:       boolean
  isMember:      boolean
  memberCount:   int
  pendingCount:  int
  adminCount:    int
  homeRoomId:    int

S→C 420 - GuildList

Source: GuildListComposer, GuildMembershipsMessageEvent

Delivers the list of guilds the current user belongs to, including membership status, favourite flag, and online member counts.

Body:
  count: int
  [count]:
    guildId:    int
    name:       string
    badge:      string
    roomId:     int
    ownerId:    int
    memberCount: int
    onlineMemberCount: int
    isMember:   boolean
    isPending:  boolean
    isAdmin:    boolean

S→C 1200 - GuildMembers

Nitro: GROUP_MEMBERS Source: GuildMembersComposer, GroupMembersEvent

Delivers a paginated guild member list with group metadata (guild ID, name, badge, member count) wrapping the per-member entries sent via S→C 265.

S→C 265 - GroupMember

Nitro: GROUP_MEMBER Source: GuildMemberUpdateComposer

Field	Type	Notes
count	int	Number of members on this page
[count × entry]	-	Member entry
entry.rank	int	0=owner, 1=admin, 2=member, 3=requested, 4=deleted
entry.id	int	Account ID
entry.name	string	Username
entry.figure	string	Avatar figure string
entry.joinedAt	string	Join date string
isAdmin	boolean	Whether the requesting user is an admin
pageSize	int	Members per page
pageIndex	int	Current page index
level	int	Filter level (0=all, 1=admins, 2=pending)
query	string	Search query string

This is the full member list page; see also the wrapping GROUP_MEMBERS (S→C 1200) which adds group metadata.

Delivers detailed data for a single guild member (rank, join date, online status).

S→C 1180 - GroupMembershipRequested

Nitro: GROUP_MEMBERSHIP_REQUESTED Source: GroupMembershipRequestedMessageEvent

Field	Type	Notes
groupId	int	Guild ID for the membership request
member.id	int	Account ID of the requester
member.name	string	Requester username
member.figure	string	Requester figure string
member.joinedAt	string	Date string

Notifies a guild admin that a new membership request has been submitted.

S→C 1876 - GuildConfirmRemoveMember

Nitro: GROUP_MEMBER_REMOVE_CONFIRM

Source: GuildConfirmRemoveMemberComposer, GroupConfirmMemberRemoveEvent

Field	Type	Notes
userId	int	Account ID of the member being removed
furniCount	int	Number of guild furni the member has placed (may be returned)

Prompts the guild admin to confirm removal of a member.

S→C 762 - GuildJoinError

Nitro: GROUP_HABBO_JOIN_FAILED

Source: GuildJoinErrorComposer, HabboGroupJoinFailedMessageEvent

Field	Type	Notes
errorCode	int	Error code (e.g. 1 = HC required, 2 = guild full)

Reports that joining a guild failed (e.g. already a member, locked).

S→C 818 - GuildAcceptMemberError

Nitro: GUILD_MEMBER_MGMT_FAILED

Source: GuildAcceptMemberErrorComposer, GuildMemberMgmtFailedMessageEvent

Field	Type	Notes
guildId	int	ID of the guild
errorCode	int	Error code

Reports that accepting a guild membership request failed.

S→C 3988 - GuildEditFail

Nitro: GUILD_EDIT_FAILED

Source: GuildEditFailComposer, GuildEditFailedMessageEvent

Field	Type	Notes
errorCode	int	Error code indicating what went wrong

Reports that a guild settings edit operation failed.

S→C 1459 - GroupDetailsChanged

Nitro: GROUP_DETAILS_CHANGED Source: UnknownGuild2Composer, GroupDetailsChangedMessageEvent

Field	Type	Notes
groupId	int	Guild ID whose details changed

Notifies clients in the guild's base room that guild settings (name, badge, colours) have changed.

S→C 2445 - GuildRefreshMembersList

Nitro: GROUP_MEMBERS_REFRESH

Source: GuildRefreshMembersListComposer

Field	Type	Notes
guildId	int	ID of the guild
unknown	int	Always 0

Signals the client to refresh the guild members list.

S→C 2808 - GuildBought

Nitro: GROUP_PURCHASED

Source: GuildBoughtComposer, GroupPurchasedEvent

Field	Type	Notes
roomId	int	Room ID the guild was created for
guildId	int	Newly created guild's ID

Confirms that a guild was successfully created, returning the new guild's ID and base room ID.

S→C 2159 - GuildBuyRooms

Nitro: GROUP_CREATE_OPTIONS

Source: GuildBuyRoomsComposer, GroupBuyDataEvent

Field	Type	Notes
guildPrice	int	Cost in credits to create a guild
roomCount	int	Number of owned rooms available
rooms[]	repeated	Per room: roomId:int, roomName:string, unknown:boolean(false)
symbolCount	int	Always 5
symbolData[]	repeated	Static badge geometry data (5 × 3 ints each)

Notes: The trailing symbol/geometry data is hardcoded in Arcturus (5, 10, 3, 4, 25, 17, etc.) - static display hints for the badge editor UI.

Delivers the list of rooms the user owns that are eligible to be a guild base.

S→C 2238 - GuildParts

Nitro: GROUP_BADGE_PARTS

Source: GuildParts, GroupBadgePartsEvent

Field	Type	Notes
baseCount	int	Number of base shapes
bases[]	repeated	Per base: id:int, valueA:string, valueB:string
symbolCount	int	Number of symbols
symbols[]	repeated	Per symbol: id:int, valueA:string, valueB:string
baseColorCount	int	Number of base colors
baseColors[]	repeated	Per color: id:int, valueA:string
symbolColorCount	int	Number of symbol colors
symbolColors[]	repeated	Per color: id:int, valueA:string
bgColorCount	int	Number of background colors
bgColors[]	repeated	Per color: id:int, valueA:string

Delivers the list of available guild badge parts (bases, symbols, colours) for the badge editor.

S→C 3965 - GuildManage

Nitro: GROUP_SETTINGS

Source: GuildManageComposer, GroupSettingsEvent

Field	Type	Notes
unknown	int	Always 1
homeRoomId	int	Room ID of the guild base
homeRoomName	string	Name of the guild base room
unknown2	boolean	Always false
unknown3	boolean	Always true
guildId	int	ID of the guild
guildName	string	Name of the guild
description	string	Guild description
roomId	int	Room ID (repeated)
colorOne	int	Primary color index
colorTwo	int	Secondary color index
stateValue	int	Join policy (0=open, 1=request, 2=locked)
rightsPolicy	int	0 = all members get rights, 1 = admin only
unknown4	boolean	Always false
unknown5	string	Always empty
badgeCount	int	Number of badge parts
badgeParts[]	repeated	Per part: baseId:int, colorOrPos:int; extra int(0) if applicable

Delivers the full guild management data (settings, colours, badge, member counts) for the admin panel.

S→C 3129 - RemoveGuildFromRoom

Nitro: GROUP_DEACTIVATE

Source: RemoveGuildFromRoomComposer, HabboGroupDeactivatedMessageEvent

Field	Type	Notes
guildId	int	ID of the guild being removed/deactivated

Notifies clients that a guild has been disassociated from the current room.

S→C 3293 - GuildFurniWidget

Nitro: FURNITURE_GROUP_CONTEXT_MENU_INFO

Source: GuildFurniWidgetComposer, GroupFurniContextMenuInfoMessageEvent

Field	Type	Notes
itemId	int	ID of the guild furniture item
guildId	int	ID of the guild
guildName	string	Name of the guild
guildRoomId	int	Room ID of the guild base
userJoined	boolean	Whether the requesting user is a member
hasForum	boolean	Whether the guild has a forum

Delivers guild data (badge, name, member count) for a guild furniture widget in the room.

S→C 3403 - GuildFavoriteRoomUserUpdate

Nitro: FAVORITE_GROUP_UDPATE

Source: GuildFavoriteRoomUserUpdateComposer, FavoriteMembershipUpdateMessageEvent

Field	Type	Notes
roomUnitId	int	Room unit ID of the user
guildId	int	Guild ID (0 if no favourite guild)
guildState	int	Guild membership state (3 if no guild)
guildName	string	Guild name (empty if no guild)

Notes: Nitro constant has a typo: FAVORITE_GROUP_UDPATE (missing D). Sent when a user's favourite guild changes while in a room.

Notifies the client that a guild member's online/in-room status has changed for the favorite room display.

S→C 2402 - RoomUsersGuildBadges

Nitro: GROUP_BADGES

Source: RoomUsersGuildBadgesComposer, HabboGroupBadgesMessageEvent

Field	Type	Notes
count	int	Number of guild badge entries
badges[]	repeated	Per entry: guildId:int, badgeCode:string

Notes: Sent to clients in a room to display guild badges on room unit overlays.

Delivers the guild badge codes for all users currently in the room.

S→C 2379 - GroupForumUnreadCount

Nitro: GROUP_FORUM_UNREAD_COUNT Source: GuildForumsUnreadMessagesCountComposer, UnreadForumsCountMessageEvent

Field	Type	Notes
count	int	Number of unread guild forum messages

Delivers the count of unread guild forum posts across all the user's guilds.

S→C 324 - GroupForumUpdateMessage

Nitro: GROUP_FORUM_UPDATE_MESSAGE Source: PostUpdateMessageComposer, UpdateMessageMessageEvent

Field	Type	Notes
groupId	int	Guild ID
threadId	int	Forum thread ID
message.id	int	Message ID
message.authorId	int	Author account ID
message.authorName	string	Author username
message.authorFigure	string	Author figure string
message.timestamp	int	Unix timestamp
message.messageText	string	Message body text
message.adminAction	int	Admin action applied (0 = none)
message.reporterName	string	Name of reporter if reported

Delivers an updated or newly posted guild forum message, including author details, timestamp, and any admin action applied.