Master Claude Code for Production Shipping · 40 min · Claude Code

Subagents for Repeatable Work

A subagent isn't automatically better than doing the task inline -- it's a real tradeoff (context isolation, parallelism) that's sometimes worth paying for and sometimes just overhead.

Hiring signal: Knowing when delegating to a subagent genuinely helps -- versus when it's the wrong tool reached for out of habit -- is the mark of someone who understands Claude Code's architecture, not just its feature list.

What you will learn

Explain context isolation and when it's worth the overhead of a subagent
Design and run a subagent-based workflow for a real repeated task
Compare a subagent's output/context cost against doing the same task inline

What You're Building

One real subagent-based workflow for a task you actually repeat — and, just as importantly, a clear-eyed comparison of whether delegating it was actually worth it, versus doing the same thing in your main conversation.

Why delegate at all: context isolation

A subagent gets a fresh context window, which is the entire point
Your main Claude Code conversation accumulates context as you work — every file read, every edit, every tool result. A task like "review this 2000-line diff and summarize the risks" run inline adds all of that reading to YOUR context, permanently, even after you've gotten the summary you needed. Delegated to a subagent, that reading happens in an isolated context that closes when the subagent finishes — you get the summary back, not the 2000 lines of diff that produced it.

Unlock the full lesson

You've read the first 2 sections. The rest of this lesson covers Designing the subagent, When NOT to delegate, What you're building today — plus a hands-on lab, quiz, and project artifact.

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