Start here

Pick the path that matches where you are. Each lesson is short, uses plain words, and ends with something you have done yourself.

I have never used an API

Read these in order. They take about an hour together, and you do not need to write any code.

Lesson 1What is an API?The idea, in everyday terms, and why testers and developers care.→Lesson 2HTTP basicsRequests, responses, methods, status codes and headers.→Lesson 3JSON basicsHow to read the format most APIs speak.→Lesson 4Your first API callSend a real request with ApiWorkbench and read the answer.→Lesson 5Your first mock serverBuild a pretend API with Mock Studio and call it.→Lesson 6How APIs know who you areAPI keys, Basic auth, Bearer tokens and OAuth, without the fog.→

I know APIs and want to test them

GuideAPI testing fundamentalsWhat to check in every response, and the kinds of test worth writing.→LabTodo APIA complete first test suite against a mock you run yourself.→LabShop APILogin, tokens, chained requests and a data-driven run.→LabFlaky PaymentsTimeouts, random failures and rate limits, on purpose.→

I use Postman today

ApiWorkbench reads Postman collections, environments and globals, and runs pm scripts. Start with Coming from Postman, then Import from Postman. Mock Studio turns the saved examples in a collection into a mock server: see Import from Postman in the Mock Studio guide.

I came for another app

Every Dhiva Labs app has its own guide: an overview, install steps, a beginner guide, task guides and troubleshooting. Find yours in All apps. If you are not sure how to install from the Snap Store, a PPA, the Microsoft Store or an APK, read Installing Dhiva Labs apps first.

How this site is organised

Section	What is in it
Start here	Lessons for beginners, and a glossary of every term used on the site
ApiWorkbench	The full guide to the API client
Mock Studio	The full guide to the mock server
Testing guides	How to test APIs well, using both apps
Sample projects	Downloadable practice APIs with step-by-step labs
All apps	A guide for each of the other apps

Point at anything

ApiWorkbench and Mock Studio explain themselves. Point at a field, tab or button and a card appears with a title, an explanation and an example. Long-press does the same on a phone. You can turn the cards off in Settings once you know your way around.