Claude Code

Claude Code Subagents: When To Split Agent Work

Subagents help split complex tasks into focused roles when the repo, risk, or context is large.

Last updated: June 12, 2026

Good Subagent Roles

Useful roles include researcher, implementation agent, test fixer, reviewer, and migration planner.

Example Brief

Give each subagent a clear scope and expected artifact.

Role: reviewer
Scope: inspect auth changes only
Output: findings with file and line references

Common Mistakes

Ambiguous roles create duplicated work.

  • Define inputs and outputs.
  • Keep one owner for final integration.
  • Use tests as the shared truth.

FAQ

Are subagents always faster?

No. They help when work can be split cleanly.

What should the main agent do?

Coordinate scope, integrate results, and verify the final state.

Can subagents review each other?

Yes, especially on higher-risk migrations or broad refactors.