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ponytail-gain

View published benchmark results comparing ponytail with the same agent without the skill. A simple bar chart shows code volume, output tokens, cost, time, and quality checks, clearly separated from results for the current project.

OriginalShow the original description

Show ponytail's measured savings (code, cost, speed) from the benchmark. One-shot display. Use for /ponytail-gain, "what does ponytail save", "ponytail impact".

AI rating100/ 100See how to install

Good for

  • Check benchmark results for code and cost savings
  • Compare execution time and output tokens
  • Review quality checks alongside savings
  • Distinguish benchmark averages from project results

Overview

What it does

ponytail-gain displays reductions measured in ponytail’s published benchmark using text-based bar charts. It compares code volume, output tokens, cost, and elapsed time against the same agent running without the skill. The display also includes the pass rate for hidden correctness and safety checks, plus the rate of testing where the logic requires it.

When it helps

Use it to understand ponytail’s effects through measured results or to examine quality measures alongside reductions in code volume and cost. The comparison covers 39 types of tasks, each run five times, so you can also check the conditions behind the figures. It helps keep benchmark averages separate from results for an individual piece of work.

Example requests

  • “Show me the measured results with /ponytail-gain.”
  • “How much did ponytail reduce code volume and cost?”
  • “Show me the reductions and the quality check results.”

Notes

The figures are aggregate benchmark results for Ponytail 5 measured with Opus 5.5 in headless Claude Code. They are not savings calculated from your current repository and do not mean an individual task will achieve the same results. The skill only displays information; it changes neither files nor modes.

This overview was written by AI (OpenAI Codex) from the public SKILL.md. Check the original below for the exact behavior.

Objective evaluation

AI rated this skill on four points using only the contents of its SKILL.md. Stars and popularity are not taken into account.

Clear instructionsIs it clear when to use it and what it does?
AGoodIt explicitly states the purpose of displaying published benchmark savings and gives invocation examples.
Concrete stepsAre steps, inputs, outputs, and examples spelled out?
AGoodIt specifies 39 tasks with five runs each, the aggregation method, and an example bar chart.
SafetyAre sending data, deleting files, and running commands disclosed?
AGoodIt prohibits file or mode changes and fabricated savings figures for the current repository.
Easy setupDoes it need few tools or API keys, and are they documented?
AGoodIt displays supplied figures as text and specifies no additional tools or credentials.

The total counts each point as A = 25, B = 15, C = 5. Rated by AI (OpenAI Codex) as of Oct 20, 2026. Treat it as a guide and read the original before installing.

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Files included (1)

  • SKILL.md2.1 KB

SKILL.md (original)

Review the instructions the agent will receive before you install.

Ponytail Gain

Display this scoreboard when invoked. One-shot: do NOT change mode, write flag files, or persist anything.

The figures are the published agentic benchmark of Ponytail 5: headless Claude Code (Opus 5.5, default effort) on 39 tasks (feature tickets in a real FastAPI + React repo, bug fixes, security and privacy cases, small apps), 5 runs each, against the same agent without the skill. 18 of the tasks have hidden checks for correctness and safety. Each figure is the geometric mean of the per-task medians. They are measured, not computed from the current repo. Source: benchmarks/results/2026-10-07-agentic.md and the README.

Scoreboard

Render plain ASCII bars. The bar length shows ponytail as a share of the no-skill baseline; the label carries the exact figure:

  ponytail gain           benchmark · 39 tasks × 5 runs · Opus 5.5

  no-skill        ████████████████████  100%
  Lines of code   █████████···········   47%   ▼ 53%
  Output tokens   ███████████·········   55%   ▼ 45%
  Cost            ███████████████·····   74%   ▼ 26%
  Time            ████████████········   59%   ▼ 41%
  Hidden checks passed   97%  (no-skill 96%)
  Tests where the logic needs one   98%  (no-skill 68%)

  This repo:  /ponytail-debt  (shortcuts you deferred)
              /ponytail-audit (what's still cuttable)

Honesty boundary

These are benchmark averages, 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.

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