Meta Built a 50-Agent AI Swarm That Mapped 4,100 Files

Meta's AI agents wrote broken code because undocumented conventions lived only in engineers' heads 50+ specialized agents mapped 4 repos, 3 languages, and 4,100 files in sequential phases 59 context files at 25-35 lines each gave agents a compass, not an encyclopedia Results: 40% fewer tool calls, 2-day research compressed to 30 minutes, quality jumped to 4.20/5.0 You don't need bigger models to fix AI coding failures. You need structured context. Meta just dropped an engineering blog post that's worth your time.