Learn to connect anything with APIs
Go from "what's an API?" to shipping a real integration — using industry-standard tools like Postman, cURL, and OAuth — without needing a CS degree or years of experience.

"Once you see the pattern underneath APIs, every new integration stops being intimidating and starts being a puzzle you already know how to solve."— Freddy Foster

What you'll learn
What you'll be able to do
- Make authenticated HTTP requests to real-world REST APIs using tools like Postman and cURL
- Read and interpret API documentation to integrate any unfamiliar service quickly and independently
- Handle JSON responses, parse data structures, and manage errors gracefully in your code
- Build a working API integration project — such as a weather app or payment flow — from scratch
- Secure your API calls using API keys, OAuth tokens, and environment variables best practices
- Debug failed requests confidently by reading status codes, headers, and response payloads
How it works
A school that adapts to you
This isn't a set of static videos. Every lesson is generated live and tuned to where you actually are.
We learn your level
A quick placement check tailors your starting point so you're never bored or lost.
Lessons adapt as you go
Each lesson is written for your pace and your goal, adjusting as your skills grow.
Your AI coach keeps you moving
Checkpoints, feedback, and gentle nudges turn progress into a real result.
The curriculum
What's inside your school
6 modules · 24 lessons

How APIs Actually Work
Build a solid mental model of what APIs are, how the web communicates, and where APIs fit in real software.
- 1.1What Is an API and Why Should You Care?Included
- 1.2The Client-Server ModelIncluded
- 1.3HTTP Fundamentals: Verbs, URLs, and HeadersIncluded
- 1.4REST vs. Other API StylesIncluded
Your First API Calls
Make real HTTP requests using beginner-friendly tools before writing a single line of code.
- 2.1Setting Up PostmanIncluded
- 2.2Making Your First GET RequestIncluded
- 2.3Sending Data with POST, PUT, and DELETEIncluded
- 2.4Using cURL on the Command LineIncluded
Reading and Using API Documentation
Develop the skill of navigating unfamiliar API docs so you can integrate any service independently.
- 3.1Anatomy of Great API DocsIncluded
- 3.2Reading Endpoint ReferencesIncluded
- 3.3Exploring APIs with OpenAPI and SwaggerIncluded
- 3.4Picking Up an Unfamiliar API QuicklyIncluded
Working with JSON and Handling Errors
Parse, navigate, and safely handle the JSON data and error responses APIs send back.
- 4.1JSON Essentials: Objects, Arrays, and NestingIncluded
- 4.2Parsing and Extracting Data in CodeIncluded
- 4.3Understanding HTTP Status CodesIncluded
- 4.4Graceful Error Handling and RetriesIncluded
Authentication and Security
Protect your API calls and credentials using the authentication patterns every developer must know.
- 5.1API Keys: Getting, Sending, and Storing ThemIncluded
- 5.2Environment Variables and .env FilesIncluded
- 5.3OAuth 2.0 and Token-Based AuthIncluded
- 5.4Rate Limits, HTTPS, and Security Best PracticesIncluded
Build a Real API Integration Project
Apply every skill learned by designing, building, and debugging a complete API-powered project from scratch.
- 6.1Planning Your IntegrationIncluded
- 6.2Fetching and Displaying Live DataIncluded
- 6.3Debugging Failed Requests Like a ProIncluded
- 6.4Finishing and Shipping Your ProjectIncluded
Who it's for
Is this you?
Self-taught coders
You've built things by stitching together tutorials, but you want a solid mental model of APIs so you can integrate any service without guesswork.
Bootcamp graduates
Your course touched on APIs but moved fast — this fills the gaps so you can handle auth, error handling, and real integrations with confidence on the job.
Tech-curious professionals
You work alongside developers and want to genuinely understand the APIs and integrations your team discusses, not just nod along in meetings.
Junior developers
You're early in your career and want the foundational API skills — Postman, cURL, OAuth, JSON parsing — that senior devs expect you to already have.
No-code/low-code builders
You automate workflows with tools like Zapier or Make and want to understand what's actually happening under the hood so you can push beyond their limits.
Side-project developers
You have an app idea that needs to pull live data or process payments, and you want to build that integration correctly — securely and from scratch.
Questions
Frequently asked
Your teacher
A note from your teacher
Freddy Foster
If you've ever pasted an API key into a tutorial, hit a 401 error, and had no idea where to even start debugging — I built this course for that exact moment of frustration.
The truth is, APIs aren't complicated. But the way they're usually taught — buried in framework docs, scattered across Stack Overflow threads, or glossed over in a single "just call this endpoint" step — makes them feel like dark magic. They're not. They follow clear, consistent patterns. Once you see those patterns, you can't unsee them. Every new API you encounter becomes familiar territory instead of foreign ground.
Here's what we do in this course: we build your mental model from the ground up. We start with how HTTP actually works — verbs, headers, URLs, the whole picture — because that's the foundation everything else sits on. Then we get your hands dirty immediately, making real requests to real APIs using Postman and cURL, not toy examples. We dig into JSON so you know exactly how to pull the data you need out of any response. We cover authentication properly — API keys, OAuth 2.0, environment variables — because security habits formed early stick for a career. And we close by building and shipping an actual project, because that's the only way any of this becomes real.
I want to be honest with you about one thing: this course will ask you to do things, not just watch them. You'll make requests that fail. You'll misread a status code. You'll forget a header. That's not a bug in the curriculum — it's the point. I'll show you exactly how to work through those moments, because that's what senior developers actually do. The skill isn't never getting stuck. It's knowing how to get unstuck.
If you're a self-taught developer with gaps in your foundations, a bootcamp grad who wants to move faster and more confidently, or a technical professional who works alongside engineers and wants to genuinely understand what they're building — you're in the right place. Come build something real.
— Freddy Foster
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- 6 modules, 24 lessons
- AI-adaptive lessons tuned to your level
- Quizzes & checkpoints to lock in progress
- Your own AI learning coach
- Learn on any device, at your pace
- Full access for as long as you're subscribed