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Introduction to APIs

8 Topics • 22 Lessons

A hands-on, step-by-step introduction to APIs for dealership builders: how systems talk over HTTP, JSON, authentication, making requests, and building integrations.

Course Contents

Start Here

1 lesson

Welcome & How to Use This Course

What an API Is

3 lessons

What an API Is (and the client-server model)

Anatomy of a Request and Response

Check Yourself

HTTP Basics: Endpoints, Methods & Status Codes

3 lessons

Endpoints and HTTP Methods

Status Codes and How to React

Check Yourself

Data Formats: JSON

3 lessons

What JSON Is and Its Building Blocks

Reading a Response and Sending a Body

Check Yourself: JSON

Authentication: Keys, Tokens & OAuth

3 lessons

How APIs Verify Who You Are

Keeping Secrets Safe and Reading Auth Errors

Check Yourself: Authentication

Making Requests: Params, Body, curl & Postman

3 lessons

Query Params, Bodies, and the Tools

POST a JSON Body and Read the Response\

Check Yourself

Reading Docs & Common Patterns

3 lessons

How to Read API Documentation

Pagination, Rate Limits, Errors, Versioning & Idempotency

Check Yourself

Webhooks & Putting It Together

3 lessons

Webhooks: When the API Calls You

Putting It Together: A Lead-to-SMS Integration

Check Yourself