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REST APIs

REST APIs expose application data through predictable HTTP resources.

What Are REST APIs​

REST stands for Representational State Transfer. In practice, REST APIs usually organize data around resources such as users, posts, orders, and files.

Each resource is accessed through URLs and HTTP methods.

How To Use REST APIs​

Call endpoints from a frontend, backend, script, or API client. Send data as JSON and handle the response.

Basic Example​

POST /api/posts HTTP/1.1
Content-Type: application/json

{
  "title": "Learning REST",
  "published": true
}

Common Concepts​

  • Resources represent things in the system.
  • Routes map URLs to behavior.
  • JSON is the most common payload format.
  • Authentication protects private endpoints.

What To Learn Next​

Learn pagination, filtering, validation, authentication, status codes, rate limits, and API versioning.