Subagent-Driven Development

When to Use

• Task has 2+ independent workstreams
• Each workstream takes >10 minutes
• Workstreams do not share mutable state

The Pattern

1. Decompose - break into independent subtasks
2. Spec each subagent - clear, self-contained instructions
3. Launch in parallel - use exec with background:true
4. Monitor - check progress, do not micromanage
5. Integrate - run full test suite after all complete

Launch Pattern

exec command:"claude --permission-mode bypassPermissions --print '[spec A]'" background:true
exec command:"claude --permission-mode bypassPermissions --print '[spec B]'" background:true