https://jackmonte.com/tags/claude-code/Recent content in Claude Code on Jack Monte, AI Engineerhttps://jackmonte.com/images/og-image.pnghttps://jackmonte.com/images/og-image.pngHugoen-usSat, 15 Aug 2026 18:00:00 -0700https://jackmonte.com/posts/sub-agent-instruction-i-never-wrote/Sat, 15 Aug 2026 18:00:00 -0700https://jackmonte.com/posts/sub-agent-instruction-i-never-wrote/Sub-agents are sold on context isolation, and that part holds up. Less obvious is that three separate inputs cross into a sub-agent's context, and one of them is composed by a model on your behalf and never appears in your transcript. Here is which input won, and what delegation actually costs in tokens.