diff --git a/Kyoo.Common/Module.cs b/Kyoo.Common/Module.cs
index e8e23035..e8fcf1b6 100644
--- a/Kyoo.Common/Module.cs
+++ b/Kyoo.Common/Module.cs
@@ -2,7 +2,6 @@ using System;
 using System.Linq;
 using Kyoo.Controllers;
 using Kyoo.Models;
-using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 
 namespace Kyoo
diff --git a/Kyoo/CoreModule.cs b/Kyoo/CoreModule.cs
index 3111177e..3c637fce 100644
--- a/Kyoo/CoreModule.cs
+++ b/Kyoo/CoreModule.cs
@@ -1,10 +1,15 @@
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
 using Kyoo.Controllers;
 using Kyoo.Models.Permissions;
 using Kyoo.Tasks;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.StaticFiles;
+using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.FileProviders;
 
 namespace Kyoo
 {
@@ -66,9 +71,34 @@ namespace Kyoo
 			typeof(IProviderRepository)
 		};
 
+		
+		/// <summary>
+		/// The configuration to use.
+		/// </summary>
+		private readonly IConfiguration _configuration;
+
+		
+		/// <summary>
+		/// Create a new core module instance and use the given configuration.
+		/// </summary>
+		/// <param name="configuration">The configuration to use</param>
+		public CoreModule(IConfiguration configuration)
+		{
+			_configuration = configuration;
+		}
+
 		/// <inheritdoc />
         public void Configure(IServiceCollection services, ICollection<Type> availableTypes)
 		{
+			string publicUrl = _configuration.GetValue<string>("publicUrl");
+
+			services.AddControllers()
+				.AddNewtonsoftJson(x =>
+				{
+					x.SerializerSettings.ContractResolver = new JsonPropertyIgnorer(publicUrl);
+					x.SerializerSettings.Converters.Add(new PeopleRoleConverter());
+				});
+			
 			services.AddSingleton<IFileManager, FileManager>();
 			services.AddSingleton<ITranscoder, Transcoder>();
 			services.AddSingleton<IThumbnailsManager, ThumbnailsManager>();
@@ -99,5 +129,22 @@ namespace Kyoo
 			if (services.All(x => x.ServiceType != typeof(IPermissionValidator)))
 				services.AddSingleton<IPermissionValidator, PassthroughPermissionValidator>();
 		}
+
+		/// <inheritdoc />
+		public void ConfigureAspNet(IApplicationBuilder app)
+		{
+			FileExtensionContentTypeProvider contentTypeProvider = new();
+			contentTypeProvider.Mappings[".data"] = "application/octet-stream";
+			app.UseStaticFiles(new StaticFileOptions
+			{
+				ContentTypeProvider = contentTypeProvider,
+				FileProvider = new PhysicalFileProvider(Path.Join(AppDomain.CurrentDomain.BaseDirectory, "wwwroot"))
+			});
+			
+			app.UseEndpoints(endpoints =>
+			{
+				endpoints.MapControllers();
+			});
+		}
 	}
 }
\ No newline at end of file
diff --git a/Kyoo/Startup.cs b/Kyoo/Startup.cs
index e30f495e..361c1a27 100644
--- a/Kyoo/Startup.cs
+++ b/Kyoo/Startup.cs
@@ -8,10 +8,8 @@ using Kyoo.Tasks;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.AspNetCore.SpaServices.AngularCli;
-using Microsoft.AspNetCore.StaticFiles;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.FileProviders;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
 
@@ -22,10 +20,6 @@ namespace Kyoo
 	/// </summary>
 	public class Startup
 	{
-		/// <summary>
-		/// The configuration context
-		/// </summary>
-		private readonly IConfiguration _configuration;
 		/// <summary>
 		/// A plugin manager used to load plugins and allow them to configure services / asp net.
 		/// </summary>
@@ -44,11 +38,11 @@ namespace Kyoo
 		/// <param name="loggerFactory">A logger factory used to create a logger for the plugin manager.</param>
 		public Startup(IServiceProvider hostProvider, IConfiguration configuration, ILoggerFactory loggerFactory, IWebHostEnvironment host)
 		{
-			_configuration = configuration;
-			_plugins = new PluginManager(hostProvider, _configuration, loggerFactory.CreateLogger<PluginManager>());
+			_plugins = new PluginManager(hostProvider, configuration, loggerFactory.CreateLogger<PluginManager>());
 			
 			// TODO remove postgres from here and load it like a normal plugin.
-			_plugins.LoadPlugins(new IPlugin[] {new CoreModule(), 
+			_plugins.LoadPlugins(new IPlugin[] {
+				new CoreModule(configuration), 
 				new PostgresModule(configuration, host),
 				new AuthenticationModule(configuration, loggerFactory, host)
 			});
@@ -60,8 +54,6 @@ namespace Kyoo
 		/// <param name="services">The service collection to fill.</param>
 		public void ConfigureServices(IServiceCollection services)
 		{
-			string publicUrl = _configuration.GetValue<string>("publicUrl");
-
 			services.AddMvc().AddControllersAsServices();
 			
 			services.AddSpaStaticFiles(configuration =>
@@ -72,13 +64,7 @@ namespace Kyoo
 			{
 				x.EnableForHttps = true;
 			});
-
-			services.AddControllers()
-				.AddNewtonsoftJson(x =>
-				{
-					x.SerializerSettings.ContractResolver = new JsonPropertyIgnorer(publicUrl);
-					x.SerializerSettings.Converters.Add(new PeopleRoleConverter());
-				});
+			
 			services.AddHttpClient();
 			
 			services.AddTransient(typeof(Lazy<>), typeof(LazyDi<>));
@@ -99,22 +85,14 @@ namespace Kyoo
 				app.UseDeveloperExceptionPage();
 			else
 			{
-				app.UseExceptionHandler("/Error");
+				app.UseExceptionHandler("/error");
 				app.UseHsts();
 			}
-
-			FileExtensionContentTypeProvider contentTypeProvider = new();
-			contentTypeProvider.Mappings[".data"] = "application/octet-stream";
-			app.UseStaticFiles(new StaticFileOptions
-			{
-				ContentTypeProvider = contentTypeProvider,
-				FileProvider = new PhysicalFileProvider(Path.Join(AppDomain.CurrentDomain.BaseDirectory, "wwwroot"))
-			});
+			
 			if (!env.IsDevelopment())
 				app.UseSpaStaticFiles();
 
 			app.UseRouting();
-
 			app.Use((ctx, next) => 
 			{
 				ctx.Response.Headers.Remove("X-Powered-By");
@@ -131,12 +109,6 @@ namespace Kyoo
 			
 			_plugins.ConfigureAspnet(app);
 
-			app.UseEndpoints(endpoints =>
-			{
-				endpoints.MapControllers();
-			});
-			
-			
 			app.UseSpa(spa =>
 			{
 				spa.Options.SourcePath = Path.Join(AppDomain.CurrentDomain.BaseDirectory, "Kyoo.WebApp");
diff --git a/Kyoo/Views/ConfigurationApi.cs b/Kyoo/Views/ConfigurationApi.cs
index ef346979..83cd80d5 100644
--- a/Kyoo/Views/ConfigurationApi.cs
+++ b/Kyoo/Views/ConfigurationApi.cs
@@ -40,8 +40,10 @@ namespace Kyoo.Api
 		/// <summary>
 		/// Get a permission from it's slug.
 		/// </summary>
-		/// <param name="slug">The permission to retrieve. You can use __ to get a child value.</param>
+		/// <param name="slug">The permission to retrieve. You can use ':' or "__" to get a child value.</param>
 		/// <returns>The associate value or list of values.</returns>
+		/// <response code="200">Return the configuration value or the list of configurations</response>
+		/// <response code="404">No configuration exists for the given slug</response>
 		[HttpGet("{slug}")]
 		[Permission(nameof(ConfigurationApi), Kind.Admin)]
 		public ActionResult<object> GetConfiguration(string slug)
@@ -57,5 +59,28 @@ namespace Kyoo.Api
 			_configuration.Bind(slug, option);
 			return option;
 		}
+
+		/// <summary>
+		/// Edit a permission from it's slug.
+		/// </summary>
+		/// <param name="slug">The permission to edit. You can use ':' or "__" to get a child value.</param>
+		/// <param name="newValue">The new value of the configuration</param>
+		/// <returns>The edited value.</returns>
+		/// <response code="200">Return the edited value</response>
+		/// <response code="404">No configuration exists for the given slug</response>
+		[HttpPut("{slug}")]
+		[Permission(nameof(ConfigurationApi), Kind.Admin)]
+		public ActionResult<object> EditConfiguration(string slug, [FromBody] object newValue)
+		{
+			slug = slug.Replace("__", ":");
+			if (!_references.TryGetValue(slug, out Type type))
+				return NotFound();
+			// object ret = _configuration.(type, slug);
+			// if (ret != null)
+			// 	return ret;
+			// object option = Activator.CreateInstance(type);
+			// _configuration.Bind(slug, option);
+			return newValue;
+		}
 	}
 }
\ No newline at end of file