Geoffrey Huntley's original Ralph essay introduced a primitive I keep coming back to: a coding agent in a while true loop reading the same prompt over and over until the work is done. The pattern is genuinely powerful, and the ecosystem around it has grown a lot since. Huntley's own follow-upgeneralizes it well beyond coding. The official Claude Code ralph-wiggum plugin ships a Stop-hook variant. Wiggum CLI checkpoints distinct phases with a TUI on top. Vercel's ralph-loop-agent adds completion verification and token-budget stops. Adjacent tools push the same idea from neighboring angles: Aider's architect/editor mode splits planning and editing across two models and posts SOTA numbers on its own benchmark, Cline's Plan & Act keeps a human approving every diff, OpenHands wraps an action-observation loop with critic models and stuck-loop detection, and recent essays on patterns like ASDLC's Ralph Loop sketch out adversarial dual-review approaches that closely match where I ended up.…