I did a count that afternoon. From 2pm to 8pm — six hours — I opened 16 subagents in Cursor. Four waves of four each, all running in parallel. Combined output: about 500 KB of documentation, roughly the size of a novella.
On the product side, a Cloudflare Worker upgraded from Stripe-only to Stripe + Creem parallel checkout. Four real products live in production. All 12 webhook event types verified end-to-end.
I did all of this by myself. But I didn't do it alone.
What a subagent is
Cursor (also Claude Code, Cline, Aider) can spawn subagents from a main agent. Each subagent gets an independent task prompt, independent context window, independent model instance. It can call tools, read files, write files.
