AI writes your code.
You should understand why it works.
Short lessons, interactive exercises validated by AI, and a tutor in every lesson that knows what you are reading.
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Tech Foundations
3 coursesUnderstand how tech works - no code required. Perfect for product managers, designers, and AI-first creators.
AI Tools
2 coursesMaster AI development tools - Claude Code, MCP, and production-grade code review
Builder Toolkit
4 coursesThe tools AI can't use for you - terminal, DevTools, Git, and JavaScript fundamentals
Frontend
4 coursesUnderstand what AI builds in the browser - HTML structure, CSS layout, and React components
Backend
3 coursesRead and evaluate AI-generated server code, database queries, and auth patterns
Fullstack
3 coursesShip what AI builds - Next.js, deployment pipelines, and production monitoring
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My Fullstack Path
How Tech Works100%HTML & CSS100%Next: Hooks / useEffect in depth
Git & GitHub~3hDeploy & Ship~4hHow Tech Works/APIs/1/4What is an API?
Essential to know
- •API stands for Application Programming Interface — a way for software to communicate
- •APIs define what operations are available and what data format to use
- •Web APIs use HTTP to communicate over the Internet
You use APIs every day. When you check the weather, pay online, or log in with Google — APIs make those connections happen.
fetch("https://api.weather.com")
.then(res => res.json())
.then(data => console.log(data.temp))What is an API?
Essential to know
- •API stands for Application Programming Interface — a way for software to communicate
- •APIs define what operations are available and what data format to use
- •Web APIs use HTTP to communicate over the Internet
You use APIs every day. When you check the weather, pay online, or log in with Google — APIs make those connections happen.
fetch("https://api.weather.com")
.then?(res => res.json())
.then(data => console.log(data.temp))AI Tutor
Reading "What is an API?"
What does .then() do here?
.then() runs after the API replies. Fetch is async — .then() is how you grab the result.
Covered in the "Promises" section of your lesson ↓
How Tech Works/APIs/1/4What is an API?
Essential to know
- •API stands for Application Programming Interface — a way for software to communicate
- •APIs define what operations are available and what data format to use
- •Web APIs use HTTP to communicate over the Internet
You use APIs every day. When you check the weather, pay online, or log in with Google — APIs make those connections happen.
fetch("https://api.weather.com")
.then(res => res.json())
.then(data => console.log(data.temp))AI Check
Testing your grasp of "What is an API?"
Explain it back
In your own words — what is an API and why do we use them?
An API is a contract between two programs — it says what data you can ask for and how to ask. We use them so apps can talk without sharing internals.
You nailed the contract idea. Bonus: APIs also let teams update one app without breaking the other.