SPMS.API/Middlewares/ServiceCodeMiddleware.cs

@@ -34,7 +34,8 @@ public class ServiceCodeMiddleware
         // === OPTIONAL_FOR_ADMIN: 관리자는 X-Service-Code 선택 ===
         if (path.StartsWithSegments("/v1/in/stats") ||
             path.StartsWithSegments("/v1/in/device/list") ||
-            path.StartsWithSegments("/v1/in/message/list"))
+            path.StartsWithSegments("/v1/in/message/list") ||
+            path.StartsWithSegments("/v1/in/tag"))
         {
             if (context.Request.Headers.TryGetValue("X-Service-Code", out var optionalCode) &&
                 !string.IsNullOrWhiteSpace(optionalCode))

SPMS.Application/DTOs/Service/ServiceListResponseDto.cs

@@ -11,6 +11,7 @@ public class ServiceListResponseDto
 
 public class ServiceSummaryDto
 {
+    public long ServiceId { get; set; }
     public string ServiceCode { get; set; } = string.Empty;
     public string ServiceName { get; set; } = string.Empty;
     public string? Description { get; set; }

SPMS.Application/DTOs/Service/ServiceResponseDto.cs

@@ -2,6 +2,7 @@ namespace SPMS.Application.DTOs.Service;
 
 public class ServiceResponseDto
 {
+    public long ServiceId { get; set; }
     public string ServiceCode { get; set; } = string.Empty;
     public string ServiceName { get; set; } = string.Empty;
     public string? Description { get; set; }

SPMS.Application/DTOs/Tag/TagListResponseDto.cs

@@ -14,6 +14,9 @@ public class TagListResponseDto
 
 public class TagSummaryDto
 {
+    [JsonPropertyName("tag_index")]
+    public int TagIndex { get; set; }
+
     [JsonPropertyName("tag_id")]
     public long TagId { get; set; }
 

SPMS.Application/Services/ServiceManagementService.cs

@@ -982,6 +982,7 @@ public class ServiceManagementService : IServiceManagementService
     {
         return new ServiceSummaryDto
         {
+            ServiceId = service.Id,
             ServiceCode = service.ServiceCode,
             ServiceName = service.ServiceName,
             Description = service.Description,
@@ -997,6 +998,7 @@ public class ServiceManagementService : IServiceManagementService
     {
         return new ServiceResponseDto
         {
+            ServiceId = service.Id,
             ServiceCode = service.ServiceCode,
             ServiceName = service.ServiceName,
             Description = service.Description,

SPMS.Application/Services/TagService.cs

@@ -42,12 +42,22 @@ public class TagService : ITagService
         var tagIds = items.Select(t => t.Id).ToList();
         var deviceCounts = await _deviceRepository.GetDeviceCountsByTagIdsAsync(tagIds);
 
+        // 서비스별 태그 순번 계산 (Id 오름차순 기준 1-based)
+        var serviceIds = items.Select(t => t.ServiceId).Distinct().ToList();
+        var serviceTagOrders = new Dictionary<long, List<long>>();
+        foreach (var sid in serviceIds)
+        {
+            var allTags = await _tagRepository.FindAsync(t => t.ServiceId == sid);
+            serviceTagOrders[sid] = allTags.OrderBy(t => t.Id).Select(t => t.Id).ToList();
+        }
+
         var totalPages = (int)Math.Ceiling((double)totalCount / request.Size);
 
         return new TagListResponseDto
         {
             Items = items.Select(t => new TagSummaryDto
             {
+                TagIndex = serviceTagOrders[t.ServiceId].IndexOf(t.Id) + 1,
                 TagId = t.Id,
                 TagName = t.Name,
                 Description = t.Description,