Five setups, taken apart.

013–8 Codex agents, one folder, one 800-line AGENTS.mdNo worktrees, no subagents, almost no MCPs. Just a grid of Codex terminals sharing one folder and one long rules file.Peter Steinberger →02Four tools. No MCP. No sub-agents. It ships.The author of Pi built a harness around four tools and deliberately left out what most agents ship by default.Mario Zechner →03103 capabilities installed, 90 never fired in 30 daysA month of session logs, mined for what actually ran. Almost nothing did.pycomet →04Broke up with Claude Code: open-weight models at about two cents a taskHe moved his default coding agent off Claude Code in October 2026. The interesting part is the plumbing.Joe Karlsson →0522 MCP servers, 300+ tools, two used daily22 MCP servers and 300+ tools connected. Two used daily.Flavio Copes →