Build your own agent team.

Founder OS - Custom Subagents & Model Routing

Claude Code - Hidden Feature #004

Build your own agent team.

Custom subagents are isolated workers with their own model, tools, and memory. Route cheap tasks to Haiku. Route complex ones to Sonnet. Main context stays clean.

How subagents work

Isolated workers that keep your main context clean

Creating a custom agent

One file in .claude/agents/ - that's all it takes

Model routing - pick the right tool

Match the model to the task. Never use Opus for what Haiku can handle.

Built-in agents (already available)

These ship with Claude Code. No setup needed.

Fast codebase search. Haiku model. Read-only. Searches files fast.

Read-only planning. Used before plan mode executes.

Full tools, complex tasks. Full access.

Terminal in isolation. Runs terminal commands separately.

Real agent examples

Four production-ready agents. Drop them into .claude/agents/ and use immediately.

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Want this running in your business, not just your terminal? Our Claude Code development agency ships it for you, or book a free consultation to scope your setup.

Day 18: The Claude Code Resource Bible - 120+ Links

Day 20: Founder OS - Path-Scoped Rules