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Swipe AI · free lessons

Learn Building With AI APIs

9 short lessons from the first two levels of the Building With AI APIs track — real examples, quick checks and a quiz after every chapter. About 5 minutes each.

Start with “What an API Actually Is” →

Level 1

What an API Actually Is

  1. 1What an API Actually Is→
  2. 2The Shape of a Request→
  3. 3Why Build With an API at All→

+ chapter quiz (10 questions) at the end

Level 2

Putting the Pieces Together

  1. 4Choosing the Right Endpoint→
  2. 5Attaching the API Key→
  3. 6Assembling the Full Request→

+ chapter quiz (10 questions) at the end

Continue in the app: levels 3–10

The full Building With AI APIs track goes much further. Here's what comes next:

Level 3🔒 in the app

The Messages Array Idea · Why This Structure Matters for Multi-Turn Conversations

Level 4🔒 in the app

Temperature and Randomness · Length Limits and Other Common Settings

Level 5🔒 in the app

What Tokens Mean for Billing · Building Rough Cost Awareness

Level 6🔒 in the app

Asking the API to Return Data Your Code Can Use · Function Calling / Tool Use, Conceptually

Level 7🔒 in the app

What a Rate Limit Actually Is · Handling Errors Instead of Assuming Success

Level 8🔒 in the app

Getting Output as It's Generated · When to Stream and When Not To

Level 9🔒 in the app

Walking Through One Real Example End to End · Where Real Systems Add More Than the Happy Path

Level 10🔒 in the app

The Full Request Lifecycle, Tied Together · Responsible, Practical Considerations