What is a REST API? Beginner’s Guide + Examples Using Strapi

REST APIs, or Representational State Transfer Application Programming Interfaces, enable communication between computer systems using HTTP, providing a standardized method for software to interact. They are designed following principles such as statelessness, resource-based structure, client-server separation, and uniform interfaces, which make them scalable, flexible, and easier to manage compared to older protocols. RESTful APIs use HTTP methods like GET, POST, PUT, PATCH, and DELETE to perform operations on resources identified by URLs. A REST API request includes an endpoint URL, method, headers, body, and optional query parameters, while responses typically contain a status code, body, and headers, often using JSON format. Authentication is commonly managed through API keys, bearer tokens, or OAuth 2.0. Strapi, a headless CMS, can quickly generate RESTful APIs, allowing users to perform CRUD operations on content types with minimal setup, making it a valuable tool for learning and rapid prototyping.