{"id":7905,"date":"2026-01-16T18:00:00","date_gmt":"2026-01-16T23:00:00","guid":{"rendered":"https:\/\/www.ciberjure.com\/?p=7905"},"modified":"2026-01-02T13:04:41","modified_gmt":"2026-01-02T18:04:41","slug":"el-truco-que-nadie-te-conto-para-crear-tu-primera-api-en-minutos","status":"publish","type":"post","link":"https:\/\/www.ciberjure.com\/?p=7905","title":{"rendered":"El truco que nadie te cont\u00f3 para crear tu primera API en minutos"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\"><\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/www.ciberjure.com\/wp-content\/uploads\/2026\/01\/image-3-1024x1024.png\" alt=\"\" class=\"wp-image-7912\" srcset=\"https:\/\/www.ciberjure.com\/wp-content\/uploads\/2026\/01\/image-3-1024x1024.png 1024w, https:\/\/www.ciberjure.com\/wp-content\/uploads\/2026\/01\/image-3-300x300.png 300w, https:\/\/www.ciberjure.com\/wp-content\/uploads\/2026\/01\/image-3-150x150.png 150w, https:\/\/www.ciberjure.com\/wp-content\/uploads\/2026\/01\/image-3-768x768.png 768w, https:\/\/www.ciberjure.com\/wp-content\/uploads\/2026\/01\/image-3-696x696.png 696w, https:\/\/www.ciberjure.com\/wp-content\/uploads\/2026\/01\/image-3-1068x1068.png 1068w, https:\/\/www.ciberjure.com\/wp-content\/uploads\/2026\/01\/image-3.png 1080w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center\"><em>Generado por Canvas IA<\/em><\/p>\n\n\n\n<p>Las APIs (Application Programming Interfaces) son esenciales en el desarrollo de software, ya que permiten la comunicaci\u00f3n entre aplicaciones y servicios. En este art\u00edculo, aprender\u00e1s a crear una API b\u00e1sica utilizando <strong>ASP.NET Core<\/strong>, un framework potente y flexible para desarrollar servicios web.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Requisitos previos<\/strong><\/h2>\n\n\n\n<p>Antes de comenzar, aseg\u00farate de tener instalado lo siguiente:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>.NET SDK<\/strong> (descargable desde<a href=\"https:\/\/dotnet.microsoft.com\/\"> dotnet.microsoft.com<\/a>)<\/li>\n\n\n\n<li><strong>Visual Studio<\/strong> o <strong>Visual Studio Code<\/strong><\/li>\n\n\n\n<li><strong>Postman<\/strong> o <strong>cURL<\/strong> para probar la API<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>1. Creaci\u00f3n del proyecto<\/strong><\/h2>\n\n\n\n<p>Abre una terminal y ejecuta el siguiente comando para crear un nuevo proyecto de API en ASP.NET Core:<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-f34bd9ff9fa1a9ce8a602a5e9c8037fd\">dotnet new webapi -n MiPrimeraAPI<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-02f5d62e7a74878bc4d7d4e423e2fe56\">cd MiPrimeraAPI<\/p>\n\n\n\n<p>Este comando genera una estructura de proyecto con controladores b\u00e1sicos y configuraciones iniciales.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>2. Creaci\u00f3n de un controlador<\/strong><\/h2>\n\n\n\n<p>En ASP.NET Core, los controladores manejan las solicitudes HTTP. Ve a la carpeta Controllers y crea un archivo llamado UsuariosController.cs con el siguiente c\u00f3digo:<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-a5795280d5155e7673ab5deea09af107\">using Microsoft.AspNetCore.Mvc;<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-ed2ce6ac044cbb35143553c9dfeff626\">using System.Collections.Generic;<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-f6714aa7664ec2d8a7f004e6153670ef\">[ApiController]<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-02111f64643f83e82e740e2b3cf9fd79\">[Route(\u00abapi\/[controller]\u00bb)]<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-80619125f7cfe962015abc2ca63f67ea\">public class UsuariosController : ControllerBase<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-a089372a6c732fa230cda3a4defbf1d8\">{<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-06d97373d2f5188dbd59b3e951bdad73\">&nbsp;&nbsp;&nbsp;&nbsp;private static readonly List&lt;string&gt; Usuarios = new List&lt;string&gt; { \u00abJuan\u00bb, \u00abMar\u00eda\u00bb, \u00abCarlos\u00bb };<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-68981acc0b9770410ddc12808f12f3a2\">&nbsp;&nbsp;&nbsp;&nbsp;[HttpGet]<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-118e4c682288a995a3eb58068fc676d9\">&nbsp;&nbsp;&nbsp;&nbsp;public IEnumerable&lt;string&gt; GetUsuarios()<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-b095907894b0da70fd8d917c673402d3\">&nbsp;&nbsp;&nbsp;&nbsp;{<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-8e75c179077eb8413bcb8b8b1df4772e\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return Usuarios;<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-77170827d0d856f3a912701f08eec2ee\">&nbsp;&nbsp;&nbsp;&nbsp;}<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-0543a0bad03472012c7a17045a2fc715\">&nbsp;&nbsp;&nbsp;&nbsp;[HttpPost]<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-47bfa56c005907c5df11458afd43fc2a\">&nbsp;&nbsp;&nbsp;&nbsp;public IActionResult AgregarUsuario([FromBody] string nombre)<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-b095907894b0da70fd8d917c673402d3\">&nbsp;&nbsp;&nbsp;&nbsp;{<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-4760643c83cc073312f89413cd536756\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if (string.IsNullOrWhiteSpace(nombre))<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-15ff4279a19700ed839d7c2ad84fc9a6\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-4e7ad2c2390afc2be375401808b27ce4\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return BadRequest(\u00abEl nombre no puede estar vac\u00edo.\u00bb);<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-1c9b4d1bcb66c5083ee1a39ee64d1515\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-777cf9974e7cf358d771e1ca19815bff\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Usuarios.Add(nombre);<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-efe80987dd39cbc0b66363033c0d5195\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return Ok($\u00bbUsuario {nombre} agregado correctamente.\u00bb);<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-77170827d0d856f3a912701f08eec2ee\">&nbsp;&nbsp;&nbsp;&nbsp;}<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-dfa98aa6452d2bf6dbc1f2b0f1237673\">}<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Explicaci\u00f3n del c\u00f3digo<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>[ApiController]: Define el controlador como una API.<\/li>\n\n\n\n<li>[Route(\u00abapi\/[controller]\u00bb)]: Define la ruta base como api\/usuarios.<\/li>\n\n\n\n<li>GetUsuarios(): Maneja solicitudes GET para devolver la lista de usuarios.<\/li>\n\n\n\n<li>AgregarUsuario(string nombre): Maneja solicitudes POST para agregar un nuevo usuario.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>3. Configuraci\u00f3n de la API<\/strong><\/h2>\n\n\n\n<p>En el archivo Program.cs, aseg\u00farate de que el servicio de controladores est\u00e1 habilitado:<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-22f754a9a56d816f4bfcf009063bec94\">var builder = WebApplication.CreateBuilder(args);<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-23a4deadbcf8dd4c389910dd161b7948\">builder.Services.AddControllers();<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-c3cf8d6f4385e227b10793af4cd5ba2e\">var app = builder.Build();<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-a0e81df6d9986e303a767df8fb573a71\">app.UseRouting();<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-808e3fc0ac2492aa792cb21f2bfd2c6f\">app.UseAuthorization();<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-33d2614a507094f7a10231574f699f83\">app.MapControllers();<\/p>\n\n\n\n<p class=\"has-vivid-red-color has-text-color has-link-color wp-elements-c805591e9c94d59b914fc00c15a02f59\">app.Run();<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>4. Ejecuci\u00f3n y prueba de la API<\/strong><\/h2>\n\n\n\n<p>Ejecuta el siguiente comando en la terminal para iniciar la API:<\/p>\n\n\n\n<p>dotnet run<\/p>\n\n\n\n<p>La API se ejecutar\u00e1 en http:\/\/localhost:5000 (o el puerto asignado).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Probando con Postman o cURL<\/strong><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Obtener la lista de usuarios<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>En Postman, realiza una solicitud GET a http:\/\/localhost:5000\/api\/usuarios.<\/li>\n\n\n\n<li>En cURL, usa el siguiente comando:<\/li>\n<\/ul>\n\n\n\n<p>curl -X GET http:\/\/localhost:5000\/api\/usuarios<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Agregar un usuario<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>En Postman, selecciona POST, establece la URL http:\/\/localhost:5000\/api\/usuarios y en el cuerpo env\u00eda un JSON como este:<\/li>\n<\/ul>\n\n\n\n<p>\u00abPedro\u00bb<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>En cURL, usa:<\/li>\n<\/ul>\n\n\n\n<p>curl -X POST http:\/\/localhost:5000\/api\/usuarios -H \u00abContent-Type: application\/json\u00bb -d \u00ab\\\u00bbPedro\\\u00bb\u00bb<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Conclusi\u00f3n<\/strong><\/h2>\n\n\n\n<p>Crear una API en ASP.NET Core es m\u00e1s sencillo de lo que parece. Con solo unos pocos pasos, puedes construir un servicio funcional que gestione datos y responda a solicitudes HTTP. Este es el primer paso hacia el desarrollo de aplicaciones m\u00e1s avanzadas y conectadas.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Referencias<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/learn.microsoft.com\/en-us\/aspnet\/core\/web-api\/\">https:\/\/learn.microsoft.com\/en-us\/aspnet\/core\/web-api\/<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.openapis.org\">https:\/\/www.openapis.org<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Generado por Canvas IA Las APIs (Application Programming Interfaces) son esenciales en el desarrollo de software, ya que permiten la comunicaci\u00f3n entre aplicaciones y servicios. En este art\u00edculo, aprender\u00e1s a crear una API b\u00e1sica utilizando ASP.NET Core, un framework potente y flexible para desarrollar servicios web. Requisitos previos Antes de comenzar, aseg\u00farate de tener instalado [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":7906,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[59,37],"tags":[],"ppma_author":[27],"class_list":{"0":"post-7905","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-apis","8":"category-consultoria"},"authors":[{"term_id":27,"user_id":1,"is_guest":0,"slug":"ciberjurecom","display_name":"Dra. Hilda La Madrid","avatar_url":{"url":"https:\/\/www.ciberjure.com\/wp-content\/uploads\/2024\/05\/retrato3.jpg","url2x":"https:\/\/www.ciberjure.com\/wp-content\/uploads\/2024\/05\/retrato3.jpg"},"0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""}],"_links":{"self":[{"href":"https:\/\/www.ciberjure.com\/index.php?rest_route=\/wp\/v2\/posts\/7905","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ciberjure.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ciberjure.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ciberjure.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ciberjure.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7905"}],"version-history":[{"count":1,"href":"https:\/\/www.ciberjure.com\/index.php?rest_route=\/wp\/v2\/posts\/7905\/revisions"}],"predecessor-version":[{"id":7913,"href":"https:\/\/www.ciberjure.com\/index.php?rest_route=\/wp\/v2\/posts\/7905\/revisions\/7913"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ciberjure.com\/index.php?rest_route=\/wp\/v2\/media\/7906"}],"wp:attachment":[{"href":"https:\/\/www.ciberjure.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7905"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ciberjure.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7905"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ciberjure.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7905"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/www.ciberjure.com\/index.php?rest_route=%2Fwp%2Fv2%2Fppma_author&post=7905"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}