diff --git a/SPMS.API/Controllers/DeviceController.cs b/SPMS.API/Controllers/DeviceController.cs
index b4658c0..77112cd 100644
--- a/SPMS.API/Controllers/DeviceController.cs
+++ b/SPMS.API/Controllers/DeviceController.cs
@@ -55,6 +55,24 @@ public class DeviceController : ControllerBase
         return Ok(ApiResponse.Success());
     }
 
+    [HttpPost("tags")]
+    [SwaggerOperation(Summary = "태그 설정", Description = "디바이스 태그를 설정합니다. 빈 배열 전달 시 모든 태그 해제.")]
+    public async Task<IActionResult> SetTagsAsync([FromBody] DeviceTagsRequestDto request)
+    {
+        var serviceId = GetServiceId();
+        await _deviceService.SetTagsAsync(serviceId, request);
+        return Ok(ApiResponse.Success());
+    }
+
+    [HttpPost("agree")]
+    [SwaggerOperation(Summary = "동의 설정", Description = "푸시/마케팅 수신 동의를 설정합니다.")]
+    public async Task<IActionResult> SetAgreeAsync([FromBody] DeviceAgreeRequestDto request)
+    {
+        var serviceId = GetServiceId();
+        await _deviceService.SetAgreeAsync(serviceId, request);
+        return Ok(ApiResponse.Success());
+    }
+
     [HttpPost("list")]
     [Authorize]
     [SwaggerOperation(Summary = "디바이스 목록", Description = "대시보드에서 디바이스 목록을 조회합니다. JWT 인증 필요.")]
diff --git a/SPMS.Application/DTOs/Device/DeviceAgreeRequestDto.cs b/SPMS.Application/DTOs/Device/DeviceAgreeRequestDto.cs
new file mode 100644
index 0000000..6d783cd
--- /dev/null
+++ b/SPMS.Application/DTOs/Device/DeviceAgreeRequestDto.cs
@@ -0,0 +1,19 @@
+using System.ComponentModel.DataAnnotations;
+using System.Text.Json.Serialization;
+
+namespace SPMS.Application.DTOs.Device;
+
+public class DeviceAgreeRequestDto
+{
+    [Required]
+    [JsonPropertyName("device_id")]
+    public long DeviceId { get; set; }
+
+    [Required]
+    [JsonPropertyName("push_agreed")]
+    public bool PushAgreed { get; set; }
+
+    [Required]
+    [JsonPropertyName("marketing_agreed")]
+    public bool MarketingAgreed { get; set; }
+}
diff --git a/SPMS.Application/DTOs/Device/DeviceTagsRequestDto.cs b/SPMS.Application/DTOs/Device/DeviceTagsRequestDto.cs
new file mode 100644
index 0000000..d2fe449
--- /dev/null
+++ b/SPMS.Application/DTOs/Device/DeviceTagsRequestDto.cs
@@ -0,0 +1,15 @@
+using System.ComponentModel.DataAnnotations;
+using System.Text.Json.Serialization;
+
+namespace SPMS.Application.DTOs.Device;
+
+public class DeviceTagsRequestDto
+{
+    [Required]
+    [JsonPropertyName("device_id")]
+    public long DeviceId { get; set; }
+
+    [Required]
+    [JsonPropertyName("tags")]
+    public List<int> Tags { get; set; } = new();
+}
diff --git a/SPMS.Application/Interfaces/IDeviceService.cs b/SPMS.Application/Interfaces/IDeviceService.cs
index 582eceb..9de2ff6 100644
--- a/SPMS.Application/Interfaces/IDeviceService.cs
+++ b/SPMS.Application/Interfaces/IDeviceService.cs
@@ -9,4 +9,6 @@ public interface IDeviceService
     Task UpdateAsync(long serviceId, DeviceUpdateRequestDto request);
     Task DeleteAsync(long serviceId, DeviceDeleteRequestDto request);
     Task<DeviceListResponseDto> GetListAsync(long serviceId, DeviceListRequestDto request);
+    Task SetTagsAsync(long serviceId, DeviceTagsRequestDto request);
+    Task SetAgreeAsync(long serviceId, DeviceAgreeRequestDto request);
 }
diff --git a/SPMS.Application/Services/DeviceService.cs b/SPMS.Application/Services/DeviceService.cs
index f3d18ea..69c232f 100644
--- a/SPMS.Application/Services/DeviceService.cs
+++ b/SPMS.Application/Services/DeviceService.cs
@@ -144,6 +144,33 @@ public class DeviceService : IDeviceService
         };
     }
 
+    public async Task SetTagsAsync(long serviceId, DeviceTagsRequestDto request)
+    {
+        var device = await _deviceRepository.GetByIdAndServiceAsync(request.DeviceId, serviceId);
+        if (device == null)
+            throw new SpmsException(ErrorCodes.DeviceNotFound, "존재하지 않는 디바이스입니다.", 404);
+
+        device.Tags = JsonSerializer.Serialize(request.Tags);
+        device.UpdatedAt = DateTime.UtcNow;
+        _deviceRepository.Update(device);
+        await _unitOfWork.SaveChangesAsync();
+    }
+
+    public async Task SetAgreeAsync(long serviceId, DeviceAgreeRequestDto request)
+    {
+        var device = await _deviceRepository.GetByIdAndServiceAsync(request.DeviceId, serviceId);
+        if (device == null)
+            throw new SpmsException(ErrorCodes.DeviceNotFound, "존재하지 않는 디바이스입니다.", 404);
+
+        device.PushAgreed = request.PushAgreed;
+        device.MarketingAgreed = request.MarketingAgreed;
+        device.AgreeUpdatedAt = DateTime.UtcNow;
+        if (request.MarketingAgreed != device.MarketingAgreed)
+            device.MktAgreeUpdatedAt = DateTime.UtcNow;
+        _deviceRepository.Update(device);
+        await _unitOfWork.SaveChangesAsync();
+    }
+
     private static Platform ParsePlatform(string platform)
     {
         return platform.ToLowerInvariant() switch