Design and build a REST API: resources, verbs, status codes, validation, paging, and real errors.
There is a moment in every developer's life when they realise the API they shipped works perfectly and is horrible to use. The routes are named after what the code does rather than what the data is, the same resource comes back in two different shapes, and everything answers 200 whether it succeeded or not. It runs. Nobody wants to consume it.
This course is the difference between an API that works and one that is good. You start from the Crew API you finished in Express.js Basics, audit it honestly, and write the fix list yourself. Then you work through it: resources with predictable URLs, verbs that mean what they say, status codes that tell a client what happened, bodies that stay the same shape, validation that reports every problem at once, paging that does not lose rows, and one error shape the whole API uses.
Nothing here re-teaches Express. That course taught you how to make the framework do a thing; this one is about which thing is the right one to do. By the end you have an API a real front end could consume without a single question, and, because this is the last course in the Full-Stack Development program, the capstone here is the program's final item.
50 Lessons • 60 Practices • 20 Quizzes • 4 Projects · ~11h Total
Not just theory. You finish this course with real work to show.
This is the same in-browser editor every lesson uses. Edit the code, hit Run.
Run code in the browser and see the result immediately. Every lesson works this way.
Stuck? Puff explains the error and nudges you forward, without giving the answer away.
Streaks, diamonds, and certificates. Your progress saves automatically, forever.
Every completed course issues a certificate with a public verification link.
Every certificate has a public verification link employers can check.
One certificate per course. Finish a program and earn its program certificate too.
LinkedIn-ready, with a PDF you can download and attach.
You have a working server. This is the step from working to well designed.
You have consumed a dozen APIs. This is why the good ones felt good.
This course's capstone is the program's final item and its certificate story.
REST API Basics is free to start, no credit card needed. Some later sections are part of Pro, and finishing every section, including the certificate, needs a Pro plan.
Yes. Every item here assumes you can route a request, read a parameter, write middleware, and send a JSON response. This course spends those skills from the first line and never re-teaches them.
Express.js Basics teaches how to make the framework do a thing. This course teaches which thing is the right one to do. Same runtime, same shim, entirely different question.
Because one exercise runs one runtime, so an item that executes SQL cannot also run JavaScript. The store here is an array shaped exactly like SQL Basics' crew table, and the course names the seam where the real INSERT would go rather than pretending it does not exist.
By Fielding's original definition, no. By the definition the industry actually uses, yes, and almost nothing you have ever consumed passes the strict test. The course names that honestly once, in Section 1, and then gets on with the constraints that pay off.
The Crew API, four times over: a contract, then writes, then paging, then the whole thing. You start from the API you built in Express.js Basics and finish with one a front end could consume without asking you a question.
Yes, a course certificate for this course. This is also the last course in the Full-Stack Development program, so finishing it is what issues the program certificate once every course in that program is complete.
How this course connects to the bigger picture, and what to explore next.
Query real data with SQL: SELECT, filtering, sorting, joins, grouping, and the tables behind every app.
Write real web pages by hand: document structure, text, links, lists, images, semantic HTML, and forms.
Style real pages with CSS: selectors, the cascade, color, the box model, backgrounds, and typography.
Free to start, no credit card required. Write real code from the first lesson and keep your progress forever.
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