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ponytail-gain
Ponytail Gain displays a read-only ASCII scoreboard comparing code efficiency metrics (lines of code, cost, and speed) across five benchmark tasks measured on three Claude models. Use it to visualize the published median performance gains from the ponytail shorthand methodology without modifying any repository state or configuration.
Install in Claude Code
Copygit clone --depth 1 https://github.com/DietrichGebert/ponytail /tmp/ponytail-gain && cp -r /tmp/ponytail-gain/skills/ponytail-gain ~/.claude/skills/ponytail-gainThen start a new Claude Code session; the skill loads automatically.
Definition
SKILL.md
# Ponytail Gain
Display this scoreboard when invoked. One-shot: do NOT change mode, write flag
files, or persist anything.
The figures are the published benchmark medians (5 everyday tasks: email
validator, debounce, CSV sum, countdown timer, rate limiter; three models:
Haiku, Sonnet, Opus). They are measured, not computed from the current repo.
Source: `benchmarks/` and the README.
## Scoreboard
Render plain ASCII bars. The bar length shows the measured range; the label
carries the exact figure:
```
ponytail gain benchmark median · 5 tasks · 3 models
Lines of code no-skill ████████████████████ 100%
ponytail ██▌················· 6–20% ▼ 80–94%
Cost no-skill ████████████████████ 100%
ponytail █████▌·············· 23–53% ▼ 47–77%
Speed ponytail ▸ 3–6× faster
This repo: /ponytail-debt (shortcuts you deferred)
/ponytail-audit (what's still cuttable)
```
## Honesty boundary
These are benchmark medians, not this repo. NEVER print a per-repo savings
number ("you saved X lines/tokens here"): the unbuilt version was never
written, so there is no real baseline to subtract from in a live repo. The
only real per-repo figures come from `/ponytail-debt` (a counted ledger), and
this card points there instead of inventing one.
## Boundaries
One-shot display. Edits nothing, changes no mode.
"stop ponytail" or "normal mode": revert.