diff --git a/MMOTestServer/MMOserver/Api/BossRaidResult.cs b/MMOTestServer/MMOserver/Api/BossRaidResult.cs
new file mode 100644
index 0000000..4a9c629
--- /dev/null
+++ b/MMOTestServer/MMOserver/Api/BossRaidResult.cs
@@ -0,0 +1,13 @@
+namespace MMOserver.Api;
+
+// RestApi.BossRaidAccesssAsync 반환용 도메인 모델
+// API 응답(BossRaidAccessResponse)을 직접 노출하지 않고 이걸로 매핑해서 반환
+public sealed class BossRaidResult
+{
+    public int RoomId { get; init; }
+    public string SessionName { get; init; } = string.Empty;
+    public int BossId { get; init; }
+    public List<string> Players { get; init; } = new();
+    public string Status { get; init; } = string.Empty;
+    public string? Tokens { get; init; }
+}
diff --git a/MMOTestServer/MMOserver/Api/RestApi.cs b/MMOTestServer/MMOserver/Api/RestApi.cs
index 254f464..4de9bfa 100644
--- a/MMOTestServer/MMOserver/Api/RestApi.cs
+++ b/MMOTestServer/MMOserver/Api/RestApi.cs
@@ -70,8 +70,8 @@ public class RestApi : Singleton<RestApi>
     }
 
     // 레이드 채널 접속 여부 체크
-    // 성공 시 sessionName 반환, 실패/거절 시 null 반환
-    public async Task<bool?> BossRaidAccesssAsync(List<string> userNames, int bossId)
+    // 성공 시 BossRaidResult 반환, 실패/거절 시 null 반환
+    public async Task<BossRaidResult?> BossRaidAccesssAsync(List<string> userNames, int bossId)
     {
         string url = AppConfig.RestApi.BaseUrl + "/api/internal/bossraid/entry";
 
@@ -85,20 +85,31 @@ public class RestApi : Singleton<RestApi>
                 if (response.StatusCode == HttpStatusCode.Unauthorized)
                 {
                     Log.Warning("[RestApi] 보스 레이드 접속 인증 실패 (401)");
-                    return false;
+                    return null;
                 }
 
                 // 400: 입장 조건 미충족 (레벨 부족, 이미 진행중 등)
                 if (response.StatusCode == HttpStatusCode.BadRequest)
                 {
                     Log.Warning("[RestApi] 보스 레이드 입장 거절 (400) BossId={BossId}", bossId);
-                    return false;
+                    return null;
                 }
 
                 response.EnsureSuccessStatusCode();
 
-                BossRaidAccessResponse? result = await response.Content.ReadFromJsonAsync<BossRaidAccessResponse>();
-                return result?.BossId > 0 ? true : false;
+                BossRaidAccessResponse? raw = await response.Content.ReadFromJsonAsync<BossRaidAccessResponse>();
+                if (raw == null) return null;
+
+                // API 응답 → 도메인 모델 매핑
+                return new BossRaidResult
+                {
+                    RoomId = raw.RoomId,
+                    SessionName = raw.SessionName ?? string.Empty,
+                    BossId = raw.BossId,
+                    Players = raw.Players,
+                    Status = raw.Status ?? string.Empty,
+                    Tokens = raw.Tokens
+                };
             }
             catch (Exception ex) when (attempt < MAX_RETRY)
             {
@@ -111,7 +122,7 @@ public class RestApi : Singleton<RestApi>
             }
         }
 
-        return false;
+        return null;
     }
 
     private sealed class BossRaidAccessResponse
@@ -152,10 +163,10 @@ public class RestApi : Singleton<RestApi>
         }
 
         [JsonPropertyName("tokens")]
-        public Dictionary<string, string> Tokens
+        public string? Tokens
         {
             get;
             set;
-        } = new();
+        }
     }
 }
diff --git a/MMOTestServer/MMOserver/Game/GameServer.cs b/MMOTestServer/MMOserver/Game/GameServer.cs
index e02fd0f..d920875 100644
--- a/MMOTestServer/MMOserver/Game/GameServer.cs
+++ b/MMOTestServer/MMOserver/Game/GameServer.cs
@@ -1076,10 +1076,10 @@ public class GameServer : ServerBase
             userNames.Add(channel.GetPlayer(memberId).Nickname);
         }
 
-        bool? result = await RestApi.Instance.BossRaidAccesssAsync(userNames, 1);
+        BossRaidResult? result = await RestApi.Instance.BossRaidAccesssAsync(userNames, 1);
 
         // 입장 실패
-        if (result.Value == false)
+        if (result != null)
         {
             SendTo(peer,
                 PacketSerializer.Serialize((ushort)PacketCode.INTO_BOSS_RAID,
@@ -1087,6 +1087,7 @@ public class GameServer : ServerBase
 
             Log.Debug("[GameServer] INTO_BOSS_RAID HashKey={Key} PartyId={PartyId} AssignedRaidMapId={RaidId} Failed", hashKey,
                 party.PartyId, -1);
+            return;
         }
 
         // 레이드 맵 할당 (미사용 맵 탐색 → 없으면 동적 생성)
@@ -1146,7 +1147,8 @@ public class GameServer : ServerBase
         // 파티장에게 입장 성공 응답 (할당된 실제 레이드 맵 ID 전달)
         SendTo(peer,
             PacketSerializer.Serialize((ushort)PacketCode.INTO_BOSS_RAID,
-                new IntoBossRaidPacket { RaidId = assignedRaidMapId, IsSuccess = true }));
+                new IntoBossRaidPacket
+                    { RaidId = assignedRaidMapId, IsSuccess = true, Session = result.SessionName, Token = result.Tokens }));
 
         Log.Debug("[GameServer] INTO_BOSS_RAID HashKey={Key} PartyId={PartyId} AssignedRaidMapId={RaidId}", hashKey, party.PartyId,
             assignedRaidMapId);
diff --git a/MMOTestServer/MMOserver/Packet/PacketBody.cs b/MMOTestServer/MMOserver/Packet/PacketBody.cs
index bfc45c4..f440eaa 100644
--- a/MMOTestServer/MMOserver/Packet/PacketBody.cs
+++ b/MMOTestServer/MMOserver/Packet/PacketBody.cs
@@ -769,6 +769,20 @@ public class IntoBossRaidPacket
         get;
         set;
     }
+
+    [ProtoMember(3)]
+    public string Token
+    {
+        get;
+        set;
+    }
+
+    [ProtoMember(4)]
+    public string Session
+    {
+        get;
+        set;
+    }
 }
 
 // PARTY_CHANGE_MAP (클라 -> 서버 전용)