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7/23/2026
I Built CodeComplex: A Real-Time Competitive Coding Platform with AI Rivals and Bug-Fix Arenas

I Built CodeComplex: A Real-Time Competitive Coding Platform with AI Rivals and Bug-Fix Arenas

Short summary

The author built CodeComplex, a real-time competitive coding platform featuring DSA battles, a bug-fix arena, prompt wars, and an AI rival (DevBot V1) for solo practice. Key engineering decisions include containerized sandboxed code execution, Socket.IO for real-time match state sync, and atomic MongoDB updates to prevent race conditions. The platform also implements MCP and RFC 8288 discovery endpoints for AI coding agent integration.

  • •Real-time competitive coding platform with DSA, bug-fix, and prompt-war arenas
  • •Sandboxed containerized code execution with fallback strategies for judge resilience
  • •MCP server and well-known discovery endpoints for AI agent integration

Generated with AI, which can make mistakes.

#ai-tools#ai-agents#open-source
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