Agent skill · software engineering · dietrichgebert
ponytail-gain
Show ponytail's measured impact as a compact scoreboard: less code, less cost, more speed, from the benchmark medians. One-shot display, not a persistent mode, and not a per-repo number. Trigger: /ponytail-gain, "ponytail gain", "what does ponytail save", "show ponytail impact", "ponytail scoreboard".
Why this skill is useful
Adds a compact scoreboard display for measuring code efficiency and performance metrics specific to the Ponytail framework that the AI wouldn't generate on its own.
What it needs
About 1k tokens when loaded. Last updated 2026-07-15. 97,533 stars on the source repository.
What this skill does
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: 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
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills dietrichgebert/ponytail-gain--1c8c7a