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Introduction to Subagents
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Introduction to Subagents in Claude Code
Subagents are specialized assistants that Claude Code can delegate tasks to, each running in its own isolated context window. In this course, you'll learn how subagents work, how to create your own, and when to use them to keep your main conversation clean and focused. No programming experience is required — just basic comfort with a command line. Start learning how to break complex work into focused pieces and get more out of longer Claude Code sessions.Create and Configure Custom Subagents
Claude Code ships with built-in subagents for exploration and planning, but the real power comes from building your own. You'll walk through the /agents command to create a custom subagent from scratch, configuring its description, system prompt, tool access, and model. You'll learn how each field in the config file influences when Claude delegates to the subagent and what instructions it receives.Design Subagents That Stay Focused and Finish on Time
A poorly configured subagent will wander, run too long, or produce output the main agent can't use. You'll learn four design patterns that fix this: writing descriptions that shape input prompts, defining structured output formats as natural stopping conditions, surfacing obstacles so the main thread doesn't rediscover them, and restricting tool access to match each subagent's role.Know When to Delegate and When to Stay on the Main Thread
Not every task benefits from a subagent. You'll learn which patterns work — research, code reviews, and tasks needing custom system prompts — and which ones don't, like expert-persona prompts, sequential pipelines, and test runners that hide the output you need.By the time you complete this course, you'll be able to create, configure, and deploy subagents that keep your context window clean, produce structured and actionable output, and make your Claude Code workflow significantly more effective.
What you'll learn
- Explain how subagents run in isolated context windows and return summaries to the main thread without exposing intermediate work.
- Create custom subagents using the /agents command, configuring their description, system prompt, tools, and model.
- Design effective subagent configs by defining structured output formats, reporting obstacles, and restricting tool access to match the subagent's role.
- Evaluate whether a task should be delegated to a subagent or kept on the main thread based on whether the intermediate work matters.
- Identify common subagent anti-patterns, including expert-persona prompts, sequential pipelines, and test-runner subagents that hide critical output.
Feels like what you want to learn?
Start Course for FreePrerequisites
Claude Code 101Introduction to Subagents
Designing and Using Effective Subagents
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FAQs
What is a subagent?
A subagent is a specialized assistant that Claude Code can delegate tasks to. Each subagent runs in its own isolated context window with a custom system prompt, works autonomously, and returns only a summary to your main conversation, keeping your context window clean.
Do I need to know how to code to take this course?
No programming experience is required. The course uses Claude Code's terminal interface, and all exercises involve writing natural-language prompts and navigating text-based menus. You should be comfortable using a command line, but you won't need to write any code yourself.
What will I be able to do after completing this course?
You will be able to create custom subagents using the /agents command, design effective subagents with structured outputs and appropriate tool access, and decide when to delegate a task to a subagent versus handling it on the main thread.
Is this course free to take?
Yes. This course can be completed from beginning-to-end without a paid DataCamp subscription.
Do I need to install Claude Code before starting?
No. The course runs entirely in DataCamp's browser-based terminal environment with Claude Code pre-installed. You do not need to set anything up locally.
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