Claude build itself a project management system to keep track of subagents

A user asked Claude about session costs, leading to a discussion where Claude suggested building a "harness agnostic, model agnostic, multi-agent, heirarchical context, mission based control plane" to maximize its leverage in commanding a swarm. This system, running through the Codex App Server, allows Claude to manage interactive Codex sessions and spawn subagents. Users can ask Claude how to use it, or refer to "codexctl" for driving Codex via the documented Codex Control Plane, though its status as abandoned is noted.

This report uniquely details Claude's self-designed project management system, which it proposed to a user to manage subagents and optimize resource use, unlike typical AI responses.