Claude Code Subagents: The Claude Code Feature You Skip Every Day (And Why It Quietly Wrecks Your…

Your best Claude Code session quietly rots all afternoon, and you blame the model when the fix was one habit away. Claude Code subagents are the single highest-leverage habit separating casual users from experts. Most engineers never touch them. Here is what that costs you, and how to fix it in one afternoon.

In this article: Claude Code, Anthropic’s agentic coding tool, slowly degrades over a long session for a reason nobody warns you about: context pollution. Every detour you take leaves file reads piled up in your main conversation. This article explains Claude Code subagents, the built-in feature that fixes it by doing the reading somewhere else. You will learn what a subagent actually is, the three you can use right now with zero setup, how to invoke them, and when to write your own. By the end, delegation will stop being a feature you forget and become your first move.