Débutant Quartier du code

API

REST, GraphQL, gRPC et WebSockets.

Every app you use is a conversation between programs. When you open your feed, a client asks a server for posts and gets JSON back, and the rules of that conversation are an API. This track starts from zero: HTTP requests and responses, status codes, JSON, curl and fetch, then designing clean REST resources. After that you learn what makes developers love an API: safe keys and tokens, pagination, errors that help, rate limits, versioning and webhooks, and when to reach for GraphQL, gRPC or WebSockets instead.

Every example is a real HTTP exchange you can read line by line.

Leçons: 14
Durée: 2 h
Niveau: Débutant

Commencer le parcours · What is an API?

Les leçons de ce parcours sont en anglais pour le moment.

Bronze disponible
Argent disponible
Or verrouillé

Envie de faire vos preuves ?

Trois examens vous attendent : Bronze, Argent et Or.

Aller aux examens

Ce que vous saurez faire

Read any HTTP request and response: method, path, headers, body and status
Call APIs from the terminal with curl and from JavaScript with fetch
Design clean REST resources and pick the right status codes
Keep keys safe, page through long lists and return errors that help
Change an API without breaking clients, and verify webhook signatures
Know when REST, GraphQL, gRPC or WebSockets fits best

L'itinéraire

1
Module 1
Talking HTTP

What an API is, requests and responses, status codes, JSON with curl and fetch, and REST design.

0 / 5
2
Module 2
APIs people love

Authentication, pagination, helpful errors, rate limits, versions, webhooks and other API styles.

0 / 5
3
Module 3
Next level

Describe, build, secure and test APIs for real users.

0 / 4