YAGNI

Ever watched your AI agent turn “add a date picker” into 404 lines of code, a flatpickr npm dependency, and a wrapper component with its own CSS? Yeah. Me too. So when I saw a GitHub repo called Ponytail hit 83,449 stars in its first month—with a tagline that reads “He says nothing. He writes one line. It works."—I had to install it immediately. TL;DR: Ponytail is a plugin for Claude Code, Codex, and 20+ agent CLIs that installs a 7-rung “ladder of restraint” before every code generation step. But the result? 54% less code, 22% fewer tokens, 20% lower cost, 27% faster sessions—and 100% safety on adversarial inputs. Yet a bare “write one-liners” prompt only manages 95% safety. ...

Ever asked your AI coding agent to simplify something and watched it add three more dependencies instead? Yeah, me too. That’s exactly why ponytail exists — a YAGNI plugin that puts a “stop and think” ladder inside Claude Code, Codex, Cursor, and practically every other AI coding agent out there. 916 GitHub stars in its first 24 hours. Not bad for a tool whose entire philosophy is “write less code.” ...