ponytail
> 编程语言Makes your AI agent think like the laziest senior dev in the room. The best code is the code you nev
About
Makes your AI agent think like the laziest senior dev in the room. The best code is the code you nev
Ponytail
He says nothing. He writes one line. It works.
~54% less code (up to 94%) · ~20% cheaper · ~27% faster · 100% safe
Measured on real Claude Code sessions editing a real open-source repo (FastAPI + React), against the same agent with no skill. ~54% is the mean across 12 feature tasks (Haiku 4.5, n=4); it reaches 94% where an agent over-builds (a date picker) and is near zero where the code is already minimal. ponytail keeps every safety guard while a bare "write one-liners" prompt drops one. (The earlier single-shot benchmark reported 80-94% as a flat figure; against a fair agentic baseline that is the per-task ceiling, not the average.) Full writeup · reproduce it.
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You know him. Long ponytail. Oval glasses. Has been at the company longer than the version control. You show him fifty lines; he looks at them, says nothing, and replaces them with one.
Ponytail puts him inside your AI agent.
Before / after
You ask for a date picker. Your agent installs flatpickr, writes a wrapper component, adds a stylesheet, and starts a discussion about timezones.
With ponytail:
More survivors in examples/.
Numbers
The honest measurement is a real agent doing real work: a headless Claude Code session editing tiangolo's full-stack-fastapi-template (a real FastAPI + React repo), scored on the `git diff` it leaves behind. Twelve feature tickets, the same agent with and without the skill, n=4, Haiku 4.5.
Issues· 337 open
- #974
benchmarks: preserve AISOP/AISP workflow entrypoints during Python cleanup
Updated Oct 2, 2026 - #973
Pony
Updated Oct 2, 2026 - #953
Pi: replacement systemPrompt can defeat structured prompt-section cache preservation
Updated Oct 1, 2026 - #925
`hermes plugins install DietrichGebert/ponytail --enable` fails. wrong schema.
Updated Oct 1, 2026 - #645
POSIX hooks error (exit 127) when Node.js is not on PATH — Windows variant is guarded, POSIX is not
Updated Sep 30, 2026 - #941
Plugin fails to load on OpenCode v2: v1 plugin API (default export is a function, not an object)
Updated Sep 30, 2026 - #937
Muse Code CLI
Updated Sep 30, 2026 - #949
ponytail-help: Codex invocation should be $skill-name, not @skill-name
Updated Sep 30, 2026 - #948
ponytail-debt: scan command doesn't skip .git or node_modules
Updated Sep 30, 2026 - #863
OpenCode 2 support: plugin uses V1-only API, does nothing on V2
Updated Sep 27, 2026