API

REST vs SOAP APIs: The key differences explained for beginners

Kenny Lee
Updated 10/27/25
How to get a YouTube API key [tutorial + examples]

Clinton Joy
Updated 9/23/25
Application programming interface: How APIs work and how to manage them

Clinton Joy
Updated 12/10/25
API Calls: What They Are & How to Make Them in 5 Easy Steps

Clinton Joy
Updated 4/29/25
55 Free Open APIs for Marketers & Content Developers

Allie Decker
Updated 10/20/25
What Is an API Endpoint? Examples + Pro Dev Tips

Jamie Juviler
Updated 6/3/26
What is the cURL Command?

Jamie Juviler
Updated 2/11/25
X API Guide for Non-Techies: How to Use It If You Don't Code

Clint Fontanella
Updated 3/7/25
REST APIs: How They Work and What You Need to Know

Jamie Juviler
Updated 2/20/25
12 Essential Book APIs

Atul Jindal
Updated 7/1/25
25 Best API Testing Tools for Building Functional, Secure Applications

Jamie Juviler
Updated 4/29/26
What is Payload? A Quick Guide [+ Examples]

Danielle Ellis
Updated 10/31/24
The Marketer's Guide to API Integrations

Jamie Juviler
Updated 5/14/25
What Is an Idempotent API?

Danielle Ellis
Updated 1/28/25
25 REST API Interview Questions and Answers You Should Know

Jamie Juviler
Updated 5/9/25
55 Important API Testing Interview Questions & Answers

Danielle Ellis
Updated 2/27/25
What Is API Documentation? [+ How to Write and Read It]

Anna Fitzgerald
Updated 10/20/23
API Mocking: Meaning, Tools, and Examples

Marquel Ellis
Updated 7/1/25
API Rate Limiting — Everything You Need to Know

Marquel Ellis
Updated 7/1/25
What is an API Key? (And Are They Secure?)

Jamie Juviler
Updated 7/4/25

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