humanlayer/12-factor-agents at 21K Stars With +733 Today: Production Principles for LLM-Powered Software Codify Hard-Won Deployment Lessons

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12-Factor Agents adapts the classic twelve-factor app methodology for LLM-powered production systems, defining principles for building agents that are suitable for real customer environments. At 21K stars with 733 new stars today, the project resonates with teams struggling to move agents from demos to production. It addresses the gap between agent frameworks (which optimize for capability) and production systems (which optimize for reliability, observability, and graceful degradation).