{"slug": "ponytail-lazy-senior-engineer-skill", "title": "Ponytail: Lazy Senior Engineer Skill", "summary": "DietrichGebert released Ponytail, a ruleset for AI coding agents that enforces writing the least code that works, claiming benchmark medians across 12 feature tasks on a FastAPI and React repo. The tool, available for 14+ agents including Codex, Copilot, Gemini, and Cursor, offers commands like /ponytail-review to find over-engineering and /ponytail-audit to scan for bloat.", "body_md": "He says nothing. He writes one line. It works.\n\n// A ruleset that makes your AI coding agent write the least code that works — like a senior dev who's been paged at 3am one too many times.\n\nthe_whole_idea\n\n``` python\n- class CacheManager:-     def __init__(self, ttl, maxsize):-         self._store, self._lock = {}, Lock()-     # ...44 more lines you maintain forever+ @lru_cache(maxsize=1000)+ def fetch(...): ...\n```\n\n// same behavior. 48 fewer lines. zero bugs in code that no longer exists.\n\nthe_ladder\n\n`<input type=\"date\">` over a picker lib.\nbenchmarks\n\n// medians across 12 feature tasks on a FastAPI + React repo.\n\n// validation, error handling, security and accessibility are never simplified away.\n\ninstall\n\n`codex plugin marketplace add DietrichGebert/ponytail`` copilot plugin install ponytail@ponytail``gemini extensions install github.com/DietrichGebert/ponytail``pi install git:github.com/DietrichGebert/ponytail`\n// also OpenCode, Cursor, Windsurf, Cline, Kiro, Zed and more — 14+ agents.\n\n// full list in the [README](https://github.com/DietrichGebert/ponytail#readme).\n\ncommands\n\n| `/ponytail lite\\|full\\|ultra\\|off` | set intensity, or turn it off | \n| `/ponytail-review` | find over-engineering in the current diff | \n| `/ponytail-audit` | scan the whole repo for bloat | \n| `/ponytail-debt` | collect deferred shortcuts into a ledger | \n| `/ponytail-gain` | show the benchmark scoreboard | \n| `/ponytail-help` | quick command reference | \n\nintensity\n\nBuilds what you asked, names the lazier alternative in one line. You pick.\n\nThe ladder, enforced. Stdlib and native first. Shortest diff, shortest explanation.\n\nYAGNI extremist. Ships the one-liner and challenges the rest of the requirement in the same breath.", "url": "https://wpnews.pro/news/ponytail-lazy-senior-engineer-skill", "canonical_source": "https://ponytail.dev/", "published_at": "2026-09-07 01:18:17+00:00", "updated_at": "2026-09-07 02:11:54.177565+00:00", "lang": "en", "topics": ["developer-tools", "ai-tools", "artificial-intelligence"], "entities": ["DietrichGebert", "Ponytail", "FastAPI", "React", "Codex", "Copilot", "Gemini", "Cursor"], "alternates": {"html": "https://wpnews.pro/news/ponytail-lazy-senior-engineer-skill", "markdown": "https://wpnews.pro/news/ponytail-lazy-senior-engineer-skill.md", "text": "https://wpnews.pro/news/ponytail-lazy-senior-engineer-skill.txt", "jsonld": "https://wpnews.pro/news/ponytail-lazy-senior-engineer-skill.jsonld"}}