Challenges

A flexbox layout is not behaving as expected. The sidebar should stay fixed while content scrolls.

A REST API endpoint is crashing with a null reference error. Find and fix the bug that occurs when optional user data is missing.

Create a simple REST API for managing todos. Implement CRUD operations with the provided Express app skeleton.

Services in a Docker Compose stack cannot communicate with each other. Debug and fix the networking configuration.

The GitHub Actions workflow is failing. Debug and fix the configuration issues.

Analyze a requirement for a user notification system. Identify edge cases, write user stories, and ask clarifying questions.

Write AI-consumable documentation for a caching utility module. Include setup, usage examples, and API reference.

An AI generated API documentation. Spot the inaccuracies, made-up endpoints, and incorrect information before publishing.

Customers are complaining about wrong totals in their shopping carts! Some orders show $NaN, others have incorrect amounts. Can you find the bugs before Black Friday?