
Claude Code v2.1.172 Unlocks Recursive Sub-Agents. My Fleet Found Three Walls.
On June 10, Claude Code v2.1.172 let sub-agents spawn their own sub-agents, five levels deep, and the patches through June 26 show how load-bearing that depth cap already is. I have run seven interactive CLI agents at once on one box for weeks. Recursion is real, and it multiplies the three things that already break a fleet: cold prompt-cache, dropped sockets, and the supervision tax.










