Peering Inside Subagents, and Cache Costs Split by "5 Minutes or 1 Hour"──Claude Code v2.1.300 Takes Observability for Unattended Operation One Step Further
Claude Code v2.1.300 is out. It logs cache writes split by 5-minute/1-hour lifetime, adds a window into subagent logs and a spawn-time rewrite hook. A developer's-eye look at an update that advances observability for unattended, multi-agent operation one more step.