{"id":195184,"date":"2025-05-26T06:30:00","date_gmt":"2025-05-26T05:30:00","guid":{"rendered":"https:\/\/datascientest.com\/en\/?p=195184"},"modified":"2025-06-05T15:43:19","modified_gmt":"2025-06-05T14:43:19","slug":"all-about-creating-an-api","status":"publish","type":"post","link":"https:\/\/datascientest.com\/en\/all-about-creating-an-api","title":{"rendered":"Creating an API: Complete Guide for Developers"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"195184\" class=\"elementor elementor-195184\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3c782f8 e-flex e-con-boxed e-con\" data-id=\"3c782f8\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f57795c elementor-widget elementor-widget-text-editor\" data-id=\"f57795c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-widget-text-editor.elementor-drop-cap-view-stacked .elementor-drop-cap{background-color:#69727d;color:#fff}.elementor-widget-text-editor.elementor-drop-cap-view-framed .elementor-drop-cap{color:#69727d;border:3px solid;background-color:transparent}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap{margin-top:8px}.elementor-widget-text-editor:not(.elementor-drop-cap-view-default) .elementor-drop-cap-letter{width:1em;height:1em}.elementor-widget-text-editor .elementor-drop-cap{float:left;text-align:center;line-height:1;font-size:50px}.elementor-widget-text-editor .elementor-drop-cap-letter{display:inline-block}<\/style>\t\t\t\t<p><b>APIs are ubiquitous in our digital everyday lives. Every time you check the weather on an app, make an online payment, or get directions on a map, a web API operates behind the scenes to enable different services to communicate with one another. But in concrete terms, what exactly is an API? How does it work, and why is it crucial in the development of a web application? If you&#8217;re a beginner wanting to understand how to create an API, this article is for you.<\/b><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-dbd6e60 e-flex e-con-boxed e-con\" data-id=\"dbd6e60\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7506207 elementor-widget elementor-widget-heading\" data-id=\"7506207\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style><h2 class=\"elementor-heading-title elementor-size-xl\">What is an API?<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-62757a1 elementor-widget elementor-widget-text-editor\" data-id=\"62757a1\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><a href=\"https:\/\/datascientest.com\/en\/api-the-path-to-seamless-integration\"><span style=\"font-weight: 400;\">An API<\/span><\/a><span style=\"font-weight: 400;\"> (<\/span><b>Application Programming Interface<\/b><span style=\"font-weight: 400;\">) is a <\/span><b>set of rules and protocols<\/b><span style=\"font-weight: 400;\"> that allows applications to communicate with each other. It functions as an <\/span><b>intermediary<\/b><span style=\"font-weight: 400;\"> between different software and services, facilitating data exchange and <a href=\"https:\/\/datascientest.com\/en\/all-about-script-automation\">process automation<\/a>.<\/span><\/p><p><span style=\"font-weight: 400;\">In concrete terms, a <\/span><b>web API<\/b><span style=\"font-weight: 400;\"> enables a <\/span><b>client<\/b><span style=\"font-weight: 400;\"> (browser, mobile app, software) to send <\/span><b>HTTP requests<\/b><span style=\"font-weight: 400;\"> to a <\/span><b>server<\/b><span style=\"font-weight: 400;\"> that returns data in the form of <\/span><b>server responses<\/b><span style=\"font-weight: 400;\">. These interactions often take place through dedicated <\/span><b>endpoints<\/b><span style=\"font-weight: 400;\"> corresponding to specific resources.<\/span><\/p><p><span style=\"font-weight: 400;\">APIs can be classified into several types based on their usage and architecture: <\/span><b>RESTful<\/b><span style=\"font-weight: 400;\">, which uses standard HTTP methods; <\/span><b>SOAP<\/b><span style=\"font-weight: 400;\">, which is more structured and secure; and <\/span><b>GraphQL<\/b><span style=\"font-weight: 400;\">, offering flexibility in data retrieval. They play an essential role in modern development by allowing third-party services, such as payment gateways or mapping platforms, to integrate smoothly with existing applications.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c390018 e-flex e-con-boxed e-con\" data-id=\"c390018\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3aab51a elementor-widget elementor-widget-heading\" data-id=\"3aab51a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-xl\">Why use an API?<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8151f25 elementor-widget elementor-widget-text-editor\" data-id=\"8151f25\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Using an <\/span><b>API<\/b><span style=\"font-weight: 400;\"> offers numerous benefits:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Automation<\/b><span style=\"font-weight: 400;\">: Facilitates interaction with third-party services without manual intervention.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Interoperability<\/b><span style=\"font-weight: 400;\">: Eases communication between different <\/span><b>applications used<\/b><span style=\"font-weight: 400;\">.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Reusability<\/b><span style=\"font-weight: 400;\">: The same service can serve multiple clients.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Centralized update<\/b><span style=\"font-weight: 400;\">: Any improvement to the API benefits all applications using it immediately.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Security<\/b><span style=\"font-weight: 400;\">: Data access is restricted according to defined permissions.<\/span><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c31cd85 elementor-widget elementor-widget-image\" data-id=\"c31cd85\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.15.0 - 02-08-2023 *\/\n.elementor-widget-image{text-align:center}.elementor-widget-image a{display:inline-block}.elementor-widget-image a img[src$=\".svg\"]{width:48px}.elementor-widget-image img{vertical-align:middle;display:inline-block}<\/style>\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"449\" src=\"https:\/\/datascientest.com\/en\/files\/2025\/04\/Leonardo_Kino_XL_Un_programmeur_assis_son_bureau_observant_at_3-1024x575.webp\" class=\"attachment-large size-large wp-image-194968\" alt=\"\" srcset=\"https:\/\/datascientest.com\/en\/files\/2025\/04\/Leonardo_Kino_XL_Un_programmeur_assis_son_bureau_observant_at_3-1024x575.webp 1024w, https:\/\/datascientest.com\/en\/files\/2025\/04\/Leonardo_Kino_XL_Un_programmeur_assis_son_bureau_observant_at_3-300x168.webp 300w, https:\/\/datascientest.com\/en\/files\/2025\/04\/Leonardo_Kino_XL_Un_programmeur_assis_son_bureau_observant_at_3-768x431.webp 768w, https:\/\/datascientest.com\/en\/files\/2025\/04\/Leonardo_Kino_XL_Un_programmeur_assis_son_bureau_observant_at_3.webp 1368w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5462648 elementor-align-center button-principal elementor-widget elementor-widget-button\" data-id=\"5462648\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/datascientest.com\/en\/programming-and-documenting-an-api-with-python-flask-swagger-and-connexion\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Learn how to use an API<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2d83349 e-flex e-con-boxed e-con\" data-id=\"2d83349\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-62d3861 elementor-widget elementor-widget-heading\" data-id=\"62d3861\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-xl\">What are the different types of APIs?<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7947c70 elementor-widget elementor-widget-text-editor\" data-id=\"7947c70\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">There are several types of APIs, each suited for specific needs:<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ca42ea0 elementor-widget elementor-widget-heading\" data-id=\"ca42ea0\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">1. REST API (Representational State Transfer)<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e3e2d6e elementor-widget elementor-widget-text-editor\" data-id=\"e3e2d6e\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">REST APIs are the most common. They adhere to REST principles and use <\/span><b>HTTP methods<\/b><span style=\"font-weight: 400;\"> like <\/span><b>GET, POST, PUT, DELETE<\/b><span style=\"font-weight: 400;\"> to interact with data. Typically, they return <\/span><b>server responses<\/b><span style=\"font-weight: 400;\"> in <\/span><b>JSON or XML<\/b><span style=\"font-weight: 400;\"> format.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0d26b6d elementor-widget elementor-widget-heading\" data-id=\"0d26b6d\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2. SOAP API (Simple Object Access Protocol)<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4addec9 elementor-widget elementor-widget-text-editor\" data-id=\"4addec9\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">SOAP APIs utilize <\/span><b>XML<\/b><span style=\"font-weight: 400;\"> for their exchanges and are often employed in enterprise services that demand a high level of security.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-97149a8 elementor-widget elementor-widget-heading\" data-id=\"97149a8\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">3. GraphQL API<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f4b5add elementor-widget elementor-widget-text-editor\" data-id=\"f4b5add\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Developed by Facebook, <\/span><b>GraphQL<\/b><span style=\"font-weight: 400;\"> allows retrieving only the necessary data in a single request, thereby optimizing exchange performance.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f312232 elementor-widget elementor-widget-heading\" data-id=\"f312232\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">4. WebSocket API<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d4d0ff8 elementor-widget elementor-widget-text-editor\" data-id=\"d4d0ff8\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">They enable real-time bidirectional communication, which is extremely useful for applications like instant messaging.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a88d469 elementor-widget elementor-widget-image\" data-id=\"a88d469\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"448\" src=\"https:\/\/datascientest.com\/en\/files\/2025\/04\/dst_acquisition_A_mid-range_shot_of_a_full-stack_web_developer__19f396a1-f0c0-471a-bc0e-5ffffc57d6f2-1024x574.webp\" class=\"attachment-large size-large wp-image-195196\" alt=\"\" srcset=\"https:\/\/datascientest.com\/en\/files\/2025\/04\/dst_acquisition_A_mid-range_shot_of_a_full-stack_web_developer__19f396a1-f0c0-471a-bc0e-5ffffc57d6f2-1024x574.webp 1024w, https:\/\/datascientest.com\/en\/files\/2025\/04\/dst_acquisition_A_mid-range_shot_of_a_full-stack_web_developer__19f396a1-f0c0-471a-bc0e-5ffffc57d6f2-300x168.webp 300w, https:\/\/datascientest.com\/en\/files\/2025\/04\/dst_acquisition_A_mid-range_shot_of_a_full-stack_web_developer__19f396a1-f0c0-471a-bc0e-5ffffc57d6f2-768x430.webp 768w, https:\/\/datascientest.com\/en\/files\/2025\/04\/dst_acquisition_A_mid-range_shot_of_a_full-stack_web_developer__19f396a1-f0c0-471a-bc0e-5ffffc57d6f2.webp 1456w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c2b4a58 elementor-align-center button-principal elementor-widget elementor-widget-button\" data-id=\"c2b4a58\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/datascientest.com\/en\/data-courses\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Learn to create an API<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-46ccdb8 e-flex e-con-boxed e-con\" data-id=\"46ccdb8\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-68de69f elementor-widget elementor-widget-heading\" data-id=\"68de69f\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-xl\">How to create an API in steps?<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4cb9041 elementor-widget elementor-widget-heading\" data-id=\"4cb9041\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">1. Define the goals and the data model<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8b9b2e7 elementor-widget elementor-widget-text-editor\" data-id=\"8b9b2e7\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Before starting, it&#8217;s crucial to <\/span><b>define the data model<\/b><span style=\"font-weight: 400;\"> and the API&#8217;s goals. What types of data will be exchanged? Who will be the users, and what permissions will they possess?<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-54b0d38 elementor-widget elementor-widget-heading\" data-id=\"54b0d38\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2. Choose a technology<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4811ea0 elementor-widget elementor-widget-text-editor\" data-id=\"4811ea0\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">APIs can be developed using multiple languages and frameworks:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Node.js + Express.js<\/b><span style=\"font-weight: 400;\"> (<a href=\"https:\/\/datascientest.com\/en\/javascript-unveiled-a-comprehensive-guide-to-the-language-of-the-web\">JavaScript<\/a>)<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Flask or Django REST Framework<\/b><span style=\"font-weight: 400;\"> (<\/span><a href=\"https:\/\/datascientest.com\/en\/python-for-devops-professionals\"><span style=\"font-weight: 400;\">Python<\/span><\/a><span style=\"font-weight: 400;\">)<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Spring Boot<\/b><span style=\"font-weight: 400;\"> (Java)<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><b>Ruby on Rails<\/b><span style=\"font-weight: 400;\"> (Ruby)<\/span><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d5e29bf elementor-widget elementor-widget-heading\" data-id=\"d5e29bf\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">3. Design the endpoints<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-74f5a03 elementor-widget elementor-widget-text-editor\" data-id=\"74f5a03\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Each resource should have its own <\/span><b>endpoints<\/b><span style=\"font-weight: 400;\"> with a clear structure. Example:<\/span><\/p><table><tbody><tr><td><p><b>HTTP Method<\/b><\/p><\/td><td><p><b>Endpoint<\/b><\/p><\/td><td><p><b>Description<\/b><\/p><\/td><\/tr><tr><td><p><span style=\"font-weight: 400;\">GET<\/span><\/p><\/td><td><p><span style=\"font-weight: 400;\">\/users<\/span><\/p><\/td><td><p><span style=\"font-weight: 400;\">Retrieve the list of users<\/span><\/p><\/td><\/tr><tr><td><p><span style=\"font-weight: 400;\">POST<\/span><\/p><\/td><td><p><span style=\"font-weight: 400;\">\/users<\/span><\/p><\/td><td><p><span style=\"font-weight: 400;\">Add a new user<\/span><\/p><\/td><\/tr><tr><td><p><span style=\"font-weight: 400;\">PUT<\/span><\/p><\/td><td><p><span style=\"font-weight: 400;\">\/users\/{id}<\/span><\/p><\/td><td><p><span style=\"font-weight: 400;\">Update a user<\/span><\/p><\/td><\/tr><tr><td><p><span style=\"font-weight: 400;\">DELETE<\/span><\/p><\/td><td><p><span style=\"font-weight: 400;\">\/users\/{id}<\/span><\/p><\/td><td><p><span style=\"font-weight: 400;\">Delete a user<\/span><\/p><\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-94bb6d6 elementor-widget elementor-widget-image\" data-id=\"94bb6d6\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"448\" src=\"https:\/\/datascientest.com\/en\/files\/2025\/04\/dst_acquisition_A_candid_shot_of_two_web_developers_reviewing_c_03f72346-b36c-422c-8605-03cb58416fc7-1-1024x574.webp\" class=\"attachment-large size-large wp-image-195197\" alt=\"\" srcset=\"https:\/\/datascientest.com\/en\/files\/2025\/04\/dst_acquisition_A_candid_shot_of_two_web_developers_reviewing_c_03f72346-b36c-422c-8605-03cb58416fc7-1-1024x574.webp 1024w, https:\/\/datascientest.com\/en\/files\/2025\/04\/dst_acquisition_A_candid_shot_of_two_web_developers_reviewing_c_03f72346-b36c-422c-8605-03cb58416fc7-1-300x168.webp 300w, https:\/\/datascientest.com\/en\/files\/2025\/04\/dst_acquisition_A_candid_shot_of_two_web_developers_reviewing_c_03f72346-b36c-422c-8605-03cb58416fc7-1-768x430.webp 768w, https:\/\/datascientest.com\/en\/files\/2025\/04\/dst_acquisition_A_candid_shot_of_two_web_developers_reviewing_c_03f72346-b36c-422c-8605-03cb58416fc7-1.webp 1456w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-01da5ec elementor-widget elementor-widget-heading\" data-id=\"01da5ec\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">4. Implement the API<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f9b3177 elementor-widget elementor-widget-text-editor\" data-id=\"f9b3177\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Let&#8217;s look at an <\/span><b>example<\/b><span style=\"font-weight: 400;\"> of an API using Node.js and Express.js:<\/span><\/p><p><span style=\"font-weight: 400;\">const express = require(&#8216;express&#8217;);<\/span><\/p><p><span style=\"font-weight: 400;\">const app = express();<\/span><\/p><p><span style=\"font-weight: 400;\">app.use(express.json());<\/span><\/p><p><span style=\"font-weight: 400;\">let users = [{ id: 1, name: &#8220;Alice&#8221; }, { id: 2, name: &#8220;Bob&#8221; }];<\/span><\/p><p><span style=\"font-weight: 400;\">\/\/ Retrieve all users (GET method)<\/span><\/p><p><span style=\"font-weight: 400;\">app.get(&#8216;\/users&#8217;, (req, res) =&gt; {<\/span><\/p><p><span style=\"font-weight: 400;\">res.json(users);<\/span><\/p><p><span style=\"font-weight: 400;\">});<\/span><\/p><p><span style=\"font-weight: 400;\">\/\/ Add a user<\/span><\/p><p><span style=\"font-weight: 400;\">app.post(&#8216;\/users&#8217;, (req, res) =&gt; {<\/span><\/p><p style=\"padding-left: 40px;\"><span style=\"font-weight: 400;\">const newUser = { id: users.length + 1, &#8230;req.body };<\/span><\/p><p style=\"padding-left: 40px;\"><span style=\"font-weight: 400;\">users.push(newUser);<\/span><\/p><p style=\"padding-left: 40px;\"><span style=\"font-weight: 400;\">res.status(201).json(newUser);<\/span><\/p><p><span style=\"font-weight: 400;\">});<\/span><\/p><p><span style=\"font-weight: 400;\">\/\/ Launch the server<\/span><\/p><p><span style=\"font-weight: 400;\">app.listen(3000, () =&gt; console.log(&#8220;Server listening on http:\/\/localhost:3000&#8221;));<\/span><\/p><p><span style=\"font-weight: 400;\">In this <\/span><b>example<\/b><span style=\"font-weight: 400;\">, <\/span><b>use<\/b><span style=\"font-weight: 400;\"> http:\/\/localhost:3000\/users to interact with the API.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-32334f7 elementor-widget elementor-widget-heading\" data-id=\"32334f7\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">5. Manage responses and HTTP status codes<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-958e775 elementor-widget elementor-widget-text-editor\" data-id=\"958e775\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><b>HTTP status codes<\/b><span style=\"font-weight: 400;\"> indicate the success or failure of a request:<\/span><\/p><ul><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">200 OK: Request succeeded.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">201 Created: Resource created successfully.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">400 Bad Request: Incorrect request from the client.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">404 Not Found: Resource not available.<\/span><\/li><li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">500 Internal Server Error: Server-side error occurred.<\/span><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7a211ff elementor-widget elementor-widget-image\" data-id=\"7a211ff\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"597\" src=\"https:\/\/datascientest.com\/en\/files\/2025\/04\/Capture-decran-2025-03-05-175134-1024x764.png\" class=\"attachment-large size-large wp-image-195198\" alt=\"\" srcset=\"https:\/\/datascientest.com\/en\/files\/2025\/04\/Capture-decran-2025-03-05-175134-1024x764.png 1024w, https:\/\/datascientest.com\/en\/files\/2025\/04\/Capture-decran-2025-03-05-175134-300x224.png 300w, https:\/\/datascientest.com\/en\/files\/2025\/04\/Capture-decran-2025-03-05-175134-768x573.png 768w, https:\/\/datascientest.com\/en\/files\/2025\/04\/Capture-decran-2025-03-05-175134.png 1249w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-66b3534 elementor-align-center button-principal elementor-widget elementor-widget-button\" data-id=\"66b3534\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/datascientest.com\/en\/data-courses\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Master web development<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6223641 elementor-widget elementor-widget-heading\" data-id=\"6223641\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">6. Secure the API<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a3d5878 elementor-widget elementor-widget-text-editor\" data-id=\"a3d5878\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">It&#8217;s essential to incorporate security measures:<\/span><\/p><ul><li><b>Authentication using tokens (JWT, OAuth)<\/b><\/li><li><b>Rate limiting<\/b><\/li><li><b>User input validation<\/b><\/li><li><b>Support<\/b><span style=\"font-weight: 400;\"> for HTTPS protocols<\/span><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cc2029e elementor-widget elementor-widget-heading\" data-id=\"cc2029e\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">7. Test the API<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b2c471e elementor-widget elementor-widget-text-editor\" data-id=\"b2c471e\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Before deploying your API, perform unit and functional tests to ensure its stability. You can use:<\/span><\/p><ul><li><b>Postman<\/b><span style=\"font-weight: 400;\">: To test requests manually.<\/span><\/li><li><b>Jest (Node.js), PyTest (Python), JUnit (Java)<\/b><span style=\"font-weight: 400;\">: To automate tests.<\/span><\/li><\/ul>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9010ceb elementor-widget elementor-widget-heading\" data-id=\"9010ceb\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">8. Consult the documentation<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fe9fddc elementor-widget elementor-widget-text-editor\" data-id=\"fe9fddc\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">A good API must be documented. <\/span><b>Consult the documentation<\/b><span style=\"font-weight: 400;\"> and automatically generate documentation with <\/span><b>Swagger<\/b><span style=\"font-weight: 400;\"> or <\/span><b>Postman Docs<\/b><span style=\"font-weight: 400;\">.<\/span><\/p><p><span style=\"font-weight: 400;\">Clear and detailed documentation simplifies the integration and use of the API for developers. It should include examples of requests and responses, potential error codes, and authentication guides. Well-documented APIs enhance the user experience, minimize errors, and expedite the development of applications that utilize them.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3772fb2 e-flex e-con-boxed e-con\" data-id=\"3772fb2\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-044f61e elementor-widget elementor-widget-heading\" data-id=\"044f61e\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-xl\">Conclusion<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-47e7e79 elementor-widget elementor-widget-text-editor\" data-id=\"47e7e79\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Creating an API is a crucial step in modern web application development. By clearly defining its data model, properly implementing the endpoints, and following best security practices, you ensure an efficient and scalable API. Finally, rigorous testing and comprehensive documentation facilitate seamless integration with other applications being used.<\/span><\/p><p><span style=\"font-weight: 400;\">Whether you&#8217;re developing an API for personal projects or enterprise solutions, these steps will help you establish a robust and high-performance API.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9f8214d elementor-align-center button-principal elementor-widget elementor-widget-button\" data-id=\"9f8214d\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/datascientest.com\/en\/data-courses\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Become a Web Developer<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-60fff63 e-flex e-con-boxed e-con\" data-id=\"60fff63\" data-element_type=\"container\" data-settings=\"{&quot;content_width&quot;:&quot;boxed&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2d557f2 elementor-widget elementor-widget-html\" data-id=\"2d557f2\" data-element_type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<script type=\"application\/ld+json\">\r\n{\r\n  \"@context\": \"https:\/\/schema.org\",\r\n  \"@type\": \"FAQPage\",\r\n  \"mainEntity\": [\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"What is an API?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"An API (Application Programming Interface) is a set of rules and protocols that allow applications to communicate with each other. It acts as an intermediary between different software and services, facilitating data exchange and process automation.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"Why use an API?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"Using an API has many advantages: task automation, interoperability between applications, service reusability, centralized updates, and improved security.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"What are the different types of APIs?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"There are several types of APIs: REST APIs (use HTTP for exchanges), SOAP APIs (based on XML, often used for enterprise services), GraphQL APIs (allow optimized queries), and WebSocket APIs (real-time communication).\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"How to create an API?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"The main steps are: define the objectives and data model, choose a technology (Node.js, Django, Spring Boot, etc.), design the endpoints, implement the API, manage HTTP responses, secure the API, test with Postman or Jest, and document with Swagger.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"What are the best practices for securing an API?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"To secure an API, it is essential to use authentication via JWT or OAuth, limit the number of requests, validate user inputs, and prefer HTTPS to secure exchanges.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"What are the most commonly used HTTP status codes in APIs?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"The main HTTP status codes in APIs are: 200 OK (success), 201 Created (resource created), 400 Bad Request (client error), 404 Not Found (resource not found), and 500 Internal Server Error (server error).\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"What tools are used to test an API?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"The most common tools are Postman for manual testing, Jest (Node.js), PyTest (Python), and JUnit (Java) for automated testing.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"Why is it important to document an API?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"A well-documented API makes it easier for developers to integrate and use. Tools like Swagger allow for automatically generating clear documentation with example requests and responses.\"\r\n      }\r\n    }\r\n  ]\r\n}\r\n<\/script>\r\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>APIs are ubiquitous in our digital everyday lives. Every time you check the weather on an app, make an online payment, or get directions on a map, a web API operates behind the scenes to enable different services to communicate with one another. But in concrete terms, what exactly is an API? How does it [&hellip;]<\/p>\n","protected":false},"author":45,"featured_media":195186,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_theme","format":"standard","meta":{"content-type":"","inline_featured_image":false},"categories":[2421],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.7 (Yoast SEO v21.7) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Creating an API: Complete Guide for Developers<\/title>\n<meta name=\"description\" content=\"Are you looking to create an efficient and secure API? Discover the essential steps: types of APIs, HTTP methods, endpoints, unit testing, and best practices for developing a high-performing web API.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/datascientest.com\/en\/all-about-creating-an-api\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Creating an API: Complete Guide for Developers\" \/>\n<meta property=\"og:description\" content=\"APIs are ubiquitous in our digital everyday lives. 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