I open-sourced a 4-agent adversarial code review team. Any coding agent can call it as an MCP server. Built in heym.

I shipped an open-source workflow this week: a 4-agent adversarial code review team that runs on heym and exposes itself as an MCP server. Any coding agent (Cursor, Claude Code, Codex, custom Python, Antigravity) can call into it for a structured second-opinion review on its own output. MIT licensed. Fork it. It calls Ejentum's harness API for the cognitive scaffolds (free tier for experimentation, paid tier for ongoing use). Calling it "open" and ignoring that dependency would be dishonest, so I'm naming it up front. Look at where the field has landed.