Ponytail, a free 'laziest senior dev' prompt for Claude Code and other coding agents, cut a 335-line date picker to 10 lines by using the browser's own calendar
Dietrich Gebert's Ponytail is one prompt file that makes a coding agent check what already exists before writing anything. His 585-session benchmark says it cut code 53% and cost 26%, and admits where it lost.
By Chris PirilloRead the story