diff --git a/packages/api/src/nitro/session/IUserDataSnapshot.ts b/packages/api/src/nitro/session/IUserDataSnapshot.ts
index 84c971f..9d7a24f 100644
--- a/packages/api/src/nitro/session/IUserDataSnapshot.ts
+++ b/packages/api/src/nitro/session/IUserDataSnapshot.ts
@@ -19,4 +19,13 @@ export interface IUserDataSnapshot
     isSystemShutdown: boolean;
     uiFlags: number;
     tags: ReadonlyArray<string>;
+    // Rank metadata mirrored from `permission_ranks` (Arcturus emulator
+    // ≥ 4.2.10 ships these via `UserPermissionsComposer`). Older
+    // emulators leave them at the defaults (rankId=0, empty strings)
+    // because the renderer-side parser short-circuits on bytesAvailable.
+    rankId: number;
+    rankName: string;
+    rankBadge: string;
+    rankPrefix: string;
+    rankPrefixColor: string;
 }
diff --git a/packages/communication/src/messages/parser/user/access/UserPermissionsParser.ts b/packages/communication/src/messages/parser/user/access/UserPermissionsParser.ts
index 4f40f45..20d5fb6 100644
--- a/packages/communication/src/messages/parser/user/access/UserPermissionsParser.ts
+++ b/packages/communication/src/messages/parser/user/access/UserPermissionsParser.ts
@@ -5,12 +5,22 @@ export class UserPermissionsParser implements IMessageParser
     private _clubLevel: number;
     private _securityLevel: number;
     private _isAmbassador: boolean;
+    private _rankId: number;
+    private _rankName: string;
+    private _rankBadge: string;
+    private _rankPrefix: string;
+    private _rankPrefixColor: string;
 
     public flush(): boolean
     {
         this._clubLevel = 0;
         this._securityLevel = 0;
         this._isAmbassador = false;
+        this._rankId = 0;
+        this._rankName = '';
+        this._rankBadge = '';
+        this._rankPrefix = '';
+        this._rankPrefixColor = '';
 
         return true;
     }
@@ -23,6 +33,18 @@ export class UserPermissionsParser implements IMessageParser
         this._securityLevel = wrapper.readInt();
         this._isAmbassador = wrapper.readBoolean();
 
+        // Optional trailing block (Arcturus-Morningstar-Extended ≥ 4.2.10):
+        // rank metadata appended in a backward-compatible way. Older
+        // emulators don't write these bytes so we keep the defaults
+        // from flush().
+        if(!wrapper.bytesAvailable) return true;
+
+        this._rankId = wrapper.readInt();
+        this._rankName = wrapper.readString();
+        this._rankBadge = wrapper.readString();
+        this._rankPrefix = wrapper.readString();
+        this._rankPrefixColor = wrapper.readString();
+
         return true;
     }
 
@@ -40,4 +62,29 @@ export class UserPermissionsParser implements IMessageParser
     {
         return this._isAmbassador;
     }
+
+    public get rankId(): number
+    {
+        return this._rankId;
+    }
+
+    public get rankName(): string
+    {
+        return this._rankName;
+    }
+
+    public get rankBadge(): string
+    {
+        return this._rankBadge;
+    }
+
+    public get rankPrefix(): string
+    {
+        return this._rankPrefix;
+    }
+
+    public get rankPrefixColor(): string
+    {
+        return this._rankPrefixColor;
+    }
 }
diff --git a/packages/session/src/SessionDataManager.ts b/packages/session/src/SessionDataManager.ts
index c2f15e9..c6c8b9b 100644
--- a/packages/session/src/SessionDataManager.ts
+++ b/packages/session/src/SessionDataManager.ts
@@ -32,6 +32,11 @@ export class SessionDataManager implements ISessionDataManager
     private _clubLevel: number = 0;
     private _securityLevel: number = 0;
     private _isAmbassador: boolean = false;
+    private _rankId: number = 0;
+    private _rankName: string = '';
+    private _rankBadge: string = '';
+    private _rankPrefix: string = '';
+    private _rankPrefixColor: string = '';
     private _noobnessLevel: number = -1;
     private _isEmailVerified: boolean = false;
 
@@ -89,7 +94,12 @@ export class SessionDataManager implements ISessionDataManager
             isSystemOpen: this._systemOpen,
             isSystemShutdown: this._systemShutdown,
             uiFlags: this._uiFlags,
-            tags: Object.freeze<string[]>([...this._tags]) as ReadonlyArray<string>
+            tags: Object.freeze<string[]>([...this._tags]) as ReadonlyArray<string>,
+            rankId: this._rankId,
+            rankName: this._rankName,
+            rankBadge: this._rankBadge,
+            rankPrefix: this._rankPrefix,
+            rankPrefixColor: this._rankPrefixColor
         });
 
         return this._userDataSnapshot;
@@ -239,9 +249,16 @@ export class SessionDataManager implements ISessionDataManager
     {
         if(!event || !event.connection) return;
 
-        this._clubLevel = event.getParser().clubLevel;
-        this._securityLevel = event.getParser().securityLevel;
-        this._isAmbassador = event.getParser().isAmbassador;
+        const parser = event.getParser();
+
+        this._clubLevel = parser.clubLevel;
+        this._securityLevel = parser.securityLevel;
+        this._isAmbassador = parser.isAmbassador;
+        this._rankId = parser.rankId;
+        this._rankName = parser.rankName;
+        this._rankBadge = parser.rankBadge;
+        this._rankPrefix = parser.rankPrefix;
+        this._rankPrefixColor = parser.rankPrefixColor;
 
         this.invalidateUserDataSnapshot();
     }