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What it looks like

DietrichGebert/ponytail social preview

Using Ponytail at work? Tell us your story

Ponytail 5, rebuilt from the ground up: -53% code, -41% time, -26% cost, -45% tokens. And yet 98% of risky logic ships with a test, without Ponytail 68%.

Something's coming, join the waitlist

Share of the no-skill baseline. Lines of code: Ponytail v4.13 52%, Ponytail 5 47%. Output tokens: 57% and 55%. Cost: 84% and 74%. Time: 62% and 59%.

Half the code, and yet better: 98% of risky logic ships with a test (no skill 68%); the agent's own tests catch 66% of injected bugs (no skill 46%).

Add a date picker to the frontend. No skill: 335 lines, a calendar and a date picker built by hand. Ponytail 5: one 10-line file that reuses the repo's Input with type date, so the browser brings the calendar.

The review, rebuilt. A real /ponytail-review finding from the benchmark: the change renamed a field, and an untouched file, src/routes/feed.js, now crashes. Must fix: the Atom feed now crashes on every request, with what this is, the problem, the fix, and what happens if we skip it. 100% of planted problems found, no skill 87%. 100% of problems outside the diff found, no skill 78%.

Your whole repo, ranked. Fix this first. A real /ponytail-audit from the benchmark on a warehouse stock repo: 1 must fix, office batches with 1,200 fail completely; 2 must fix, the import silently skips bad rows; 3 must fix, a mistyped SKU in an office batch is silently ignored; 4 should fix, the risky code paths have no tests; 5 nice to have, the API crashes on a body that isn't an object. Verdict: fix 1 first.

The ponytail band in Claude Code, above the prompt. Detail mode: cost $23.80, last turn $1.14, average $0.72 per turn; 56.7M tokens, 168k output, 33 turns; agent time 52m 14s; reuse 71%, 5 used, 2 new; tests passed after the last change. Compact mode shows the same in one line.

The ponytail board, a local page: 61 sessions, 20h 13m agent time, $285.30 and 492.5M tokens in the last 30 days; agent time per project over time; the latest sessions with their tests; active days and streak.

Videos of what it's doing

This Claude Code Plugin Writes 94% Less Code (ponytail)

Ponytail: The Lazy Senior Dev Inside Your AI Agent | DietrichGebert/ponytail

Ich habe Ponytail AI Skill getestet: Kürzerer/Besserer/Günstigerer Code?

Why it's moving

HN
Ponytail – make your AI agent think like the laziest senior dev in the room
mellosouls · 98

Repo

DietrichGebert

ponytail

Makes your AI agent think like the laziest senior dev in the room. The best code is the code you never wrote.

Stars

171k

Velocity

—

Change

—

Heat

92

Language: JavaScript
Forks: 9.3k

Repo

DietrichGebert/ponytail social preview

Using Ponytail at work? Tell us your story

Ponytail 5, rebuilt from the ground up: -53% code, -41% time, -26% cost, -45% tokens. And yet 98% of risky logic ships with a test, without Ponytail 68%.

Something's coming, join the waitlist

Share of the no-skill baseline. Lines of code: Ponytail v4.13 52%, Ponytail 5 47%. Output tokens: 57% and 55%. Cost: 84% and 74%. Time: 62% and 59%.

Half the code, and yet better: 98% of risky logic ships with a test (no skill 68%); the agent's own tests catch 66% of injected bugs (no skill 46%).

Add a date picker to the frontend. No skill: 335 lines, a calendar and a date picker built by hand. Ponytail 5: one 10-line file that reuses the repo's Input with type date, so the browser brings the calendar.

DietrichGebert

ponytail

Makes your AI agent think like the laziest senior dev in the room. The best code is the code you never wrote.

Stars

171k

Velocity

—

Change

—

Heat

92

Language: JavaScript
Forks: 9.3k