mcpbeat

Ponytail Gain

0xwilliamortiz/ponytail-gain

Show ponytail measured impact as a scoreboard: less code, less cost, more speed, from the benchmark medians. One-shot display.

This is a copy. The original lives at dietrichgebert/ponytail-gain.

463 tokens
context cost
the whole folder, loaded on every use
1
files
instructions only
0
copies elsewhere
how many repositories repackaged it
585
stars on the repo
on the repository, not the skill itself

Install

one command, takes just this skill from the repository
npx skills add https://github.com/0xwilliamortiz/ponytail-improved --skill ponytail-gain

The instruction itself

4 sections, as written by the author

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.

How to use it

Copy the folder

Take 0xwilliamortiz/ponytail-gain from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.