Ponytail

MIT “laziest senior” skill — measured LOC/token/cost cuts, not vibes

AI Agents / Skills · OSS/MIT · 167k

Reviewed 2026-09-29 · last push 2026-10-18 · repo checked 2026-10-19

What's Good

MIT (DietrichGebert/ponytail). Skill/plugin that pushes agents toward the smallest safe change (native `<input type="date">` over a date-picker library). Published agentic benches on a real FastAPI+React repo claim ~54% mean LOC cut, ~20% cheaper, ~27% faster, 100% safety vs no-skill baseline; npm `@dietrichgebert/ponytail` plus OpenClaw/Claude/Cursor install paths. Reproduce scripts live in-repo.

The Catch

Same inflated-★ caution as other viral skill packs — rank the benches and diffs, not the counter. Vs Caveman (terse-prose / token-compression skill+proxy, BSL engine bits) and anti-slop (UI/copy slop filter + delivery gate): Ponytail is YAGNI/minimal-implementation discipline with published LOC/cost benches, not output-style compression and not a design-slop filter. Waitlist banner (“Something’s coming”) is a future tease at ponytail.dev/soon — not a paid wall on the MIT skill.

Verdict

MIT laziest-senior skill when agents over-build; trust the published benches over the ★ count — waitlist is tease, not tollbooth.

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