diff --git a/AMessanger.API/Program.cs b/AMessanger.API/Program.cs
index 76d39e5..b668b46 100644
--- a/AMessanger.API/Program.cs
+++ b/AMessanger.API/Program.cs
@@ -1,3 +1,4 @@
+using AMessanger.Application;
 using AMessanger.Application.Hubs;
 
 var builder = WebApplication.CreateBuilder(args);
@@ -12,6 +13,8 @@ builder.Services.AddSwaggerGen();
 
 builder.Services.AddSignalR();
 
+builder.Services.AddAuth(builder.Configuration);
+
 var app = builder.Build();
 
 // Configure the HTTP request pipeline.
diff --git a/AMessanger.Application/AMessanger.Application.csproj b/AMessanger.Application/AMessanger.Application.csproj
index 5cc5881..4022601 100644
--- a/AMessanger.Application/AMessanger.Application.csproj
+++ b/AMessanger.Application/AMessanger.Application.csproj
@@ -11,6 +11,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" />
     <PackageReference Include="Microsoft.AspNetCore.SignalR" />
   </ItemGroup>
 
diff --git a/AMessanger.Application/ApplicationExtensions.cs b/AMessanger.Application/ApplicationExtensions.cs
new file mode 100644
index 0000000..3a46a64
--- /dev/null
+++ b/AMessanger.Application/ApplicationExtensions.cs
@@ -0,0 +1,33 @@
+using System.Text;
+using Microsoft.AspNetCore.Authentication.JwtBearer;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.IdentityModel.Tokens;
+
+namespace AMessanger.Application;
+
+public static class ApplicationExtensions
+{
+    public static IServiceCollection AddAuth(this IServiceCollection services, IConfiguration configuration)
+    {
+        services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
+            .AddJwtBearer(options =>
+            {
+                options.TokenValidationParameters = new Microsoft.IdentityModel.Tokens.TokenValidationParameters
+                {
+                    ValidateIssuer = true,
+                    ValidateAudience = true,
+                    ValidateLifetime = true,
+                    ValidateIssuerSigningKey = true,
+
+                    ValidIssuer = configuration["Jwt:Issuer"],
+                    ValidAudience = configuration["Jwt:Audience"],
+                    IssuerSigningKey = new SymmetricSecurityKey(
+                        Encoding.UTF8.GetBytes(configuration["Jwt:Key"]!)
+                    )
+                };
+            });
+
+        return services.AddAuthorization();
+    }
+}
\ No newline at end of file
diff --git a/Directory.Packages.props b/Directory.Packages.props
index 77021a7..0f8ee79 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -3,6 +3,7 @@
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
   </PropertyGroup>
   <ItemGroup>
+    <PackageVersion Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="10.0.11" />
     <PackageVersion Include="Microsoft.AspNetCore.OpenApi" Version="10.0.11" />
     <PackageVersion Include="Microsoft.AspNetCore.SignalR" Version="1.2.12" />
     <PackageVersion Include="Newtonsoft.Json" Version="13.0.4" />