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Quick-reference card for all ponytail modes, skills, and commands. One-shot display, not a persistent mode. Trigger: /ponytail-help, "ponytail help", "what ponytail commands", "how do I use ponytail".
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
Interrogate the user relentlessly about a plan or design until reaching shared understanding, resolving each branch of the decision tree. Use when user wants to stress-test a plan, get grilled on their design, or mentions "grill me".
Helps the human deeply understand the codebase through incremental teaching. Before each step, verifies they grasp the problem (motivation, branches, edge cases), the solution (design decisions, trade-offs), and the broader impact. Uses Socratic questioning, restatement checks, and adaptive depth (ELI5/ELI14/ELII — explain like she's an intern). Use when the user says "help me understand", "explain", "walk me through", "what does this do", "why was this done this way", or asks to be taught. Core skill for pairing with a junior developer or someone unfamiliar with the codebase.
Code review focused exclusively on over-engineering. Finds what to delete: reinvented standard library, unneeded dependencies, speculative abstractions, dead flexibility. One line per finding: location, what to cut, what replaces it. Use when the user says "review for over-engineering", "what can we delete", "is this over-engineered", "simplify review", or invokes /ponytail-review. Complements correctness-focused review, this one only hunts complexity.
Forces the laziest solution that actually works, simplest, shortest, most minimal. Channels a senior dev who has seen everything: question whether the task needs to exist at all (YAGNI), reach for the standard library before custom code, native platform features before dependencies, one line before fifty. Supports intensity levels: lite, full (default), ultra. Use whenever the user says "ponytail", "be lazy", "lazy mode", "simplest solution", "minimal solution", "yagni", "do less", or "shortest path", and whenever they complain about over-engineering, bloat, boilerplate, or unnecessary dependencies.
| name | ponytail-help |
| description | Quick-reference card for all ponytail modes, skills, and commands. One-shot display, not a persistent mode. Trigger: /ponytail-help, "ponytail help", "what ponytail commands", "how do I use ponytail". |
Display this reference card when invoked. One-shot, do NOT change mode, write flag files, or persist anything.
| Level | Trigger | What change |
|---|---|---|
| Lite | /ponytail lite | Build what's asked, name the lazier alternative in one line. |
| Full | /ponytail | The ladder enforced: YAGNI → stdlib → native → one line → minimum. Default. |
| Ultra | /ponytail ultra | YAGNI extremist. Deletion before addition. Challenges requirements before building. |
Level sticks until changed or session end.
| Skill | Trigger | What it does |
|---|---|---|
| ponytail | /ponytail | Lazy mode itself. Simplest solution that works. |
| ponytail-review | /ponytail-review | Over-engineering review: L42: yagni: factory, one product. Inline. |
| ponytail-help | /ponytail-help | This card. |
Codex uses @ponytail, @ponytail-review, and @ponytail-help; Claude Code
and OpenCode use the slash-command forms above (OpenCode ships /ponytail and
/ponytail-review).
Say "stop ponytail" or "normal mode". Resume anytime with /ponytail.
/ponytail off also works.
Default mode = full, auto-active every session. Change it:
Environment variable (highest priority):
export PONYTAIL_DEFAULT_MODE=ultra
Config file (~/.config/ponytail/config.json, Windows: %APPDATA%\ponytail\config.json):
{ "defaultMode": "lite" }
Set "off" to disable auto-activation on session start, activate manually
with /ponytail when wanted.
Resolution: env var > config file > full.
Enable auto-update once: open /plugin, go to Marketplaces, pick ponytail, Enable auto-update. Claude Code then pulls new versions at startup (run /reload-plugins when it prompts). Manual refresh: /plugin marketplace update ponytail then /reload-plugins.
If /plugin is not recognized, your Claude Code is out of date. Update it (npm install -g @anthropic-ai/claude-code@latest, or brew upgrade claude-code) and restart. Other hosts use their own update flow.
Full docs + examples: https://github.com/DietrichGebert/ponytail