Type: url
Original: https://www.humanlayer.dev/blog/advanced-context-engineering
Status: partial
Summary
A HumanLayer blog post from August 29, 2025 arguing that today’s models can work in large brownfield codebases if the development workflow is designed around context management. It describes ‘frequent intentional compaction’ — a research, plan, implement workflow that keeps context utilization around 40-60% and puts human review on research and plans rather than only on code — and reports its use on the 300k-line Rust codebase of BAML. It also argues that the main value of reviewing specs, plans and research is keeping a team mentally aligned as AI produces more code.