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Challenges Leaderboard Jobs Blog Pricing Hiring?

// Challenge library

Challenges

Complete a challenge to add a verified artifact to your public profile. Build in any language — evaluated on behaviour, not syntax.

// not ready for a full challenge?

~10 min

Try a prompt challenge — write a system prompt in the browser, scored in seconds. No setup needed.

Meeting Action Items →RAG Relevance Judge →

RAG Pipelines AI Agents MCP Servers Coding Agents Evals & Testing AI Tool Proficiency

Difficultyeasy medium hard

// 3 full challenges · AI Tool Proficiency · hard

AI Tool Proficiency

Debug 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.

Avg 8–12 h·Any language·1 engineer completed

AI Tool Proficiency

Debug a production incident using AI tools only

CTryCrucible

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Use Claude Code, Cursor, or GitHub Copilot to diagnose a production incident from logs, traces, and source code — without running the code.

Avg 8–12 h·Any language

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AI Tool Proficiency

Review and patch security vulnerabilities using AI tools

Use Claude Code, Cursor, or GitHub Copilot to review a vulnerable code package, identify security issues, explain impact, and produce minimal patches.

Avg 8–12 h·Any language