PM Skills is a collection of plain-Markdown instructions that teach AI assistants structured methods for handling professional, personal, and life-admin tasks. People use it with Claude, ChatGPT, Gemini, Cursor, Codex, and other supported agents for work such as writing product requirements, reviewing documents, or planning difficult situations.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add mohitagw15856/pm-claude-skills --skill writing-great-skillsgit clone --depth 1 https://github.com/mohitagw15856/pm-claude-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/mohitagw15856/pm-claude-skills/writing-great-skills)<a href="https://agentmods.dev/skills/mohitagw15856/pm-claude-skills/writing-great-skills"><img src="https://agentmods.dev/badge/skills/mohitagw15856/pm-claude-skills/writing-great-skills/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/mohitagw15856/pm-claude-skills/writing-great-skills"><img src="https://agentmods.dev/badge/skills/mohitagw15856/pm-claude-skills/writing-great-skills.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00113 | $0.01355 |
| Opus 5.5 | $0.00045 | $0.00542 |
| Sonnet 5.5 | $0.00023 | $0.00271 |
| Haiku 4.5 | $0.00011 | $0.00136 |
Grade A, and why
writing-great-skills scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 87 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Skill para Escribir Excelentes Skills
Un skill es una promesa: dado este tipo de solicitud, produce este tipo de output profesional, siempre. Los mejores archivos SKILL.md ganan en dos cosas — el modelo los dispara en el momento correcto, y una vez disparado produce el artefacto correcto sin necesidad de intervención manual. Este skill te ayuda a escribir uno que haga ambas cosas.
Partiendo de un brief
Dado un concepto inicial ("un skill para escribir changelogs"), produce el SKILL.md completo de todas formas — infiere el deliverable, inputs y estructura, y marca las elecciones genuinamente abiertas. Nunca devuelvas un esqueleto con <!-- TODO --> pendiente; rellénalo.
Inputs Requeridos
Solicita (si no se proporcionan ya), o infiere y etiqueta:
- Qué debe hacer el skill y el artefacto concreto que produce
- Cuándo debe dispararse (las formas en que un usuario realmente escribiría la solicitud)
- Los inputs que necesita del usuario
- Cualquier framework o estándar que codifique (para atribución)
La anatomía de un excelente SKILL.md
1. Frontmatter (esto es lo que hace que tu skill sea encontrado)
---
name: kebab-case-name # coincide con la carpeta; corto, específico
description: "<una frase rica>"
---
La descripción es la línea más importante del archivo — es todo lo que el modelo ve cuando decide si cargar el skill (divulgación progresiva: solo nombres + descripciones están en contexto hasta que uno se invoca). Una descripción sólida tiene tres partes:
- Qué hace + el deliverable concreto.
- Una cláusula de activación "Úsalo cuando…" listando las formas reales ("Úsalo cuando te pidan escribir un postmortem, hacer un análisis de causa raíz o documentar un incidente").
- Una cláusula "Produce…" nombrando el output ("Produce un postmortem sin culpa con cronología, causa raíz e items de acción").
Escribe los disparadores como los usuarios hablan, no como los categorizarías. Cubre sinónimos.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 87 lines · 113 tokens per session scan A bf7143f2265e
writing-great-skills is a skill published in the GitHub repository mohitagw15856/pm-claude-skills (1,449 stars, last pushed today), licensed MIT. It adds 113 tokens to every session and 1,355 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-12.
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