obi-jam pattern beginner Keep Your Agent Runtime Under 400 Lines If you can't diagnose a problem in your agent runtime in 30 minutes, your codebase is too big. Simplicity is a reliability feature. Mar 14, 2026 →
skills fix beginner 5 minutes Edit Tool Fails the Second Time the Same Field Gets Updated — Use sed Instead The Edit tool fails when old_string no longer exists. For dates, timestamps, and counters that update repeatedly, sed is the right tool. Mar 11, 2026 →