Module 12 — The API Connector: making your app talk to the world

No serious application is an island — payments, email, maps, CRMs. Module 12 taught integration as a reading skill first: the ability to open any service’s API documentation and see the same familiar shapes.

Every API integration is the same five questions: where do I send the request, how do I prove who I am, what do I send, what comes back, and what happens when it fails? Learn to extract those from any docs page and no integration will ever intimidate you again.

Underneath every integration is one shape: your app sends an authenticated request out, the external service sends a response back. The five questions are just the details of these two arrows.

The curriculum

Concepts built the REST mental model, then API documentation and authentication methods — the treasure-hunt skill. Authentication got the depth it deserves: Basic auth, Base64 encoding (what that header actually is), private-key auth built against a real service (Bitly) across three lessons, and the summit — OAuth2, taught properly in two: the setup, then exchanging the code for a token. Around it, the working craft: API calls as data versus as actions, one-to-many response handling, error handling (external services fail; your app degrading gracefully is your job, not theirs), debugging with raw requests and responses, calling your own workflows via the Data API, and a planning checklist so integrations start with thinking instead of pasting.

Try it yourself

Pick a free public API and, before building anything, write the five answers: endpoint, auth, request, response, failure. Then make one successful call with a test tool and one deliberately failed call. Watching a clean failure teaches error handling faster than any tutorial paragraph — you’ll never again ship an integration that assumes success.

This skill in the AI era

Here’s the pleasant surprise: Claude Code is exceptional at writing API integrations — it’s read every docs page on earth — but it implements what you specify, and the five questions are still yours to answer, especially auth flows and failure behaviour. A Module 12 graduate reviewing AI-written OAuth is a formidable combination; the same person without that knowledge is one token leak from a very bad week. Integration fluency powers everything from our marketing automation to the EA systems we build. The through-line.