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 alexdcd/Mafia-Claude-Skills --skill landing-page-masterygit clone --depth 1 https://github.com/alexdcd/Mafia-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/alexdcd/mafia-claude-skills/landing-page-mastery)<a href="https://agentmods.dev/skills/alexdcd/mafia-claude-skills/landing-page-mastery"><img src="https://agentmods.dev/badge/skills/alexdcd/mafia-claude-skills/landing-page-mastery/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/alexdcd/mafia-claude-skills/landing-page-mastery"><img src="https://agentmods.dev/badge/skills/alexdcd/mafia-claude-skills/landing-page-mastery.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00085 | $0.01571 |
| Opus 5 | $0.00043 | $0.00785 |
| Sonnet 5 | $0.00017 | $0.00314 |
| Haiku 4.5 | $0.00009 | $0.00157 |
Grade A, and why
landing-page-mastery 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 13d 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 — 169 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Landing Page Mastery
Sistema experto para la creación y optimización de landing pages de alta conversión.
IMPORTANTE: Todo el output generado por esta skill debe ser estrictamente en ESPAÑOL, independientemente del idioma de los archivos de referencia.
Selección de Flujo de Trabajo
- ¿Crear desde cero? → Sigue el "Flujo de Creación"
- ¿Auditar página existente? → Sigue el "Flujo de Auditoría"
Flujo de Creación
Paso 1: Descubrimiento (Requerido)
Antes de escribir código o copy, recopila esta información del usuario:
CONTEXTO DEL PRODUCTO:
- Tipo de producto: [SaaS/Curso/Ebook/Newsletter/Coaching/Herramienta]
- Precio: [Gratis/Bajo/Medio/Alto/Enterprise]
- Público objetivo: [¿Quién exactamente?]
- Problema principal: [Una frase]
- Diferenciador clave: [¿Por qué tú vs alternativas?]
CONTEXTO DE MARCA:
- Tono: [Profesional/Casual/Divertido/Autoritario]
- Estilo: [Moderno-pulido/Humano-auténtico/Híbrido]
- Colores de marca: [Si existen]
Paso 2: Selección de Estructura
Basado en el tipo de producto, selecciona la estructura adecuada de references/structures.md:
| Tipo de Producto | Estructura Recomendada |
|---|---|
| SaaS/Herramienta | Longitud completa (12-14 secciones) |
| Curso/Coaching | Basada en historia (10-12 secciones) |
| Ebook/Lead Magnet | Formato corto (6-8 secciones) |
| Newsletter | Ultra-corta (4-5 secciones) |
Paso 3: Redacción del Copy (Primero)
Utiliza los frameworks de copy de references/copywriting.md:
- Titular Hero → Usa la Fórmula de Resultado Específico
- Sección de Problema → Usa PAS (Problema-Agitación-Solución)
- Características → Mapeo Beneficio > Característica
- Testimonios → Usa el formato STAR
- Texto de CTA → Usa verbos de acción personalizados
Paso 4: Diseño y Construcción
Sigue las guías de diseño de references/design.md:
- Selecciona paleta de colores basada en psicología del producto
- Elige tipografía (evita fuentes genéricas)
- Implementa diseño responsive mobile-first
- Añade micro-interacciones para engagement
- Optimiza para tiempo de carga < 2 segundos
What ships with it
6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 13d ago First seen · 169 lines · 85 tokens per session scan A 41d9802b5681
landing-page-mastery is a skill published in the GitHub repository alexdcd/Mafia-Claude-Skills (51 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 85 tokens to every session and 1,571 once invoked, about $0.0004 per session on Opus 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 2026-08-30.
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