diff --git a/DoliMiddlewareApi/Program.cs b/DoliMiddlewareApi/Program.cs
new file mode 100644
index 0000000..e97329c
--- /dev/null
+++ b/DoliMiddlewareApi/Program.cs
@@ -0,0 +1,72 @@
+using DoliMiddlewareApi.Exceptions;
+using DoliMiddlewareApi.Services;
+using Microsoft.AspNetCore.Diagnostics;
+
+var builder = WebApplication.CreateBuilder(args);
+
+// Add services to the container.
+
+builder.Services.AddControllers()
+    .AddJsonOptions(options =>
+    {
+        // Serializar enums como strings en vez de números
+        options.JsonSerializerOptions.Converters.Add(new System.Text.Json.Serialization.JsonStringEnumConverter());
+
+        // Usar camelCase para propiedades (id en vez de Id)
+        options.JsonSerializerOptions.PropertyNamingPolicy = System.Text.Json.JsonNamingPolicy.CamelCase;
+    });
+// Learn more about configuring OpenAPI at https://aka.ms/aspnet/openapi
+builder.Services.AddOpenApi();
+
+
+// Typed Client - Inyecta HttpClient directamente en DolibarrApiClient
+builder.Services.AddHttpClient<DolibarrApiClient>(client =>
+{
+    client.BaseAddress = new Uri(builder.Configuration["Dolibarr:ApiUrl"]!);
+    client.DefaultRequestHeaders.Add("DOLAPIKEY", builder.Configuration["Dolibarr:ApiKey"]!);
+});
+
+var app = builder.Build();
+
+// Global exception handler
+app.UseExceptionHandler(errorApp =>
+{
+    errorApp.Run(async context =>
+    {
+        var exceptionHandler = context.Features.Get<IExceptionHandlerFeature>();
+        var exception = exceptionHandler?.Error;
+
+        var (statusCode, message) = exception switch
+        {
+            NotFoundException notFound => (StatusCodes.Status404NotFound, notFound.Message),
+            UnauthorizedException unauthorized => (StatusCodes.Status401Unauthorized, unauthorized.Message),
+            ForbiddenException forbidden => (StatusCodes.Status403Forbidden, forbidden.Message),
+            BadRequestException badRequest => (StatusCodes.Status400BadRequest, badRequest.Message),
+            ApiException apiEx => (StatusCodes.Status500InternalServerError, apiEx.Message),
+            _ => (StatusCodes.Status500InternalServerError, "An unexpected error occurred")
+        };
+
+        context.Response.StatusCode = statusCode;
+        context.Response.ContentType = "application/json";
+
+        await context.Response.WriteAsJsonAsync(new
+        {
+            error = message,
+            statusCode
+        });
+    });
+});
+
+// Configure the HTTP request pipeline.
+if (app.Environment.IsDevelopment())
+{
+    app.MapOpenApi();
+}
+
+app.UseHttpsRedirection();
+
+app.UseAuthorization();
+
+app.MapControllers();
+
+app.Run();
\ No newline at end of file
diff --git a/DoliMiddlewareApi/Properties/launchSettings.json b/DoliMiddlewareApi/Properties/launchSettings.json
new file mode 100644
index 0000000..c2c9f7a
--- /dev/null
+++ b/DoliMiddlewareApi/Properties/launchSettings.json
@@ -0,0 +1,23 @@
+{
+  "$schema": "https://json.schemastore.org/launchsettings.json",
+  "profiles": {
+    "http": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": false,
+      "applicationUrl": "http://localhost:5269",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "https": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": false,
+      "applicationUrl": "https://localhost:7010;http://localhost:5269",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}
diff --git a/DoliMiddlewareApi/appsettings.Development.json b/DoliMiddlewareApi/appsettings.Development.json
new file mode 100644
index 0000000..0c208ae
--- /dev/null
+++ b/DoliMiddlewareApi/appsettings.Development.json
@@ -0,0 +1,8 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}
diff --git a/DoliMiddlewareApi/appsettings.json b/DoliMiddlewareApi/appsettings.json
new file mode 100644
index 0000000..2917f4e
--- /dev/null
+++ b/DoliMiddlewareApi/appsettings.json
@@ -0,0 +1,13 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*",
+  "Dolibarr": {
+    "ApiUrl": "http://localhost/api/index.php/",
+    "ApiKey": "3004128e4cfbf5d0d9805d2e9cd8c79d015d0a25"
+  }
+}
\ No newline at end of file