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Free module

Web applications and APIs

Learn web APIs hands on: HTTP requests, REST design, JSON, status codes, API keys and tokens, rate limits and versioning.

6 lessons325 min lessonSoftware engineering

The lessons

Each lesson is free to read in full. Create a free account to run its commands in a live lab and to sit its quizzes and tasks.

  1. 1 · Container lab

    HTTP requests and responses

    I can read an HTTP request and its response.

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  2. 2 · Container lab

    REST API design

    I can design resource addresses and pick the right method for each job.

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  3. 3 · Container lab

    Reading, writing and checking JSON

    I can read, write and check JSON.

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  4. 4 · Container lab

    HTTP status codes and error messages

    I can choose the right status code and report an error clearly.

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  5. 5 · Container lab

    API keys, tokens and rate limits

    I can protect an API with keys, tokens and limits.

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  6. 6 · Container lab

    API versioning and breaking changes

    I can document an API and change it without breaking its users.

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Worked in a real lab

Every lesson of this module is worked in a lab started for you alone. The labs it uses:

Teaching a class? Set this module for your students with a teacher guide, marked assignments and a lab for every student.