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// 6 full challenges · AI Tool Proficiency
AI Tool Proficiency
easyBuild a REST API feature from scratch using AI tools
Use Claude Code, Cursor, or GitHub Copilot to build a complete REST API endpoint from a feature specification.
Avg 2–3 h·Any language
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hardDebug a performance incident using AI tools
Use AI tools to diagnose a production performance incident from metrics, traces, and source code, then propose or implement the fix.