copy-fundamentals

copy-fundamentals is a skill for Claude Code from lckx777/copy-chief-black. It costs 59 tokens per session (868 once invoked), scanned A, original, MIT.

A reference skill covering the basic principles of persuasive writing, including audience psychology, message structure, hooks, and common copy errors.

In plain words
What is it for?
Use it as background when producing or reviewing sales copy, especially when choosing a central message, structure, or angle.
Why use it?
It gives copy-producing tools a shared set of principles to consult before writing, reducing avoidable problems in the draft.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it as background when producing or reviewing sales copy, especially when choosing a central message, structure, or angle.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/lckx777/copy-chief-black/copy-fundamentals
Install

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.

Any agent
npx skills add lckx777/copy-chief-black --skill copy-fundamentals
Clone the repo
git clone --depth 1 https://github.com/lckx777/copy-chief-black

Made for: Claude Code.

Wrote 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.

agentmods badge for copy-fundamentals

README.md
[![agentmods](https://agentmods.dev/badge/skills/lckx777/copy-chief-black/copy-fundamentals/github.svg)](https://agentmods.dev/skills/lckx777/copy-chief-black/copy-fundamentals)
Your own site
<a href="https://agentmods.dev/skills/lckx777/copy-chief-black/copy-fundamentals"><img src="https://agentmods.dev/badge/skills/lckx777/copy-chief-black/copy-fundamentals/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.

agentmods 80×15 button for copy-fundamentals

Your own site · 80×15
<a href="https://agentmods.dev/skills/lckx777/copy-chief-black/copy-fundamentals"><img src="https://agentmods.dev/badge/skills/lckx777/copy-chief-black/copy-fundamentals.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 868 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00059 $0.00868
Opus 5 $0.00030 $0.00434
Sonnet 5 $0.00012 $0.00174
Haiku 4.5 $0.00006 $0.00087

Measured 9d ago against content hash e4c3070099cd, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-13, from the pricing page.

Security

Grade A, and why

copy-fundamentals 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 9d 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.

framework/references/copy-fundamentals/SKILL.md · 79 lines

How it starts

The opening of the file, as written. The whole thing — 79 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Copy Fundamentals - Fundamentos Universais

OBRIGATÓRIO: Estes arquivos devem ser lidos ANTES de produzir qualquer copy. O sistema bloqueia produção de copy se estes arquivos não foram consultados.

Arquivos de Referência (Leitura Obrigatória)

Arquivo Conteúdo
references/psicologia-persuasao.md 16 Emoções, 4 Dominantes, Hierarquia de Dor, Vieses
references/estrutura-mecanismo.md Puzzle Pieces 4 camadas, One Belief, Awareness, Sophistication
references/principios-escrita.md Especificidade, Concisão, Fluidez, Frases de Poder, Hook 3 elementos
references/erros-fatais.md 10 Erros Técnicos, Cícero (Essenciais vs Acidentais), Anti-Patterns
references/disparos-dopamina.md 9 Tipos de Dopamine Triggers, Posicionamento Estratégico
references/big-ideas.md 3 Elementos, Teste Unicidade, Fontes de Big Ideas
references/revisao-universal.md 6 Checklists Pré-Entrega, Teste de Prolixidade
references/pesquisa-estrategica.md VOC Discovery, Triangulação, 4 Dominantes
references/glossario-copy.md Definições Técnicas, Distinções Críticas
references/escrita-viva-principios.md Tensão, Transições Invisíveis, Ritmo
references/antes-depois-tecnica.md 8 Casos de Transformação Mecânica → Viva

Quando Carregar

SEMPRE antes de:

  • Produzir criativo/anuncio
  • Escrever headline/hook
  • Criar VSL/script
  • Redigir landing page
  • Desenvolver email de vendas
  • Formular MUP/MUS
  • Qualquer output de copy

Workflow Obrigatorio

1. Detectar trigger de copy no prompt
2. LER arquivos de references/ relevantes
3. APLICAR princípios durante produção
4. VALIDAR output contra checklists

Referencias Complementares (On-Demand)

Para frameworks especificos por tipo de copy, consultar:

Tipo Arquivo de Referencia
Criativo DTC criativos-agent/references/frameworks/prsa-dtc.md
Headlines criativos-agent/references/frameworks/frases-de-poder.md
MUP/Vilao helix-system-agent/references/templates/briefing_fase05_problema_vilao_mup.md
MUS/Mecanismo helix-system-agent/references/templates/briefing_fase06_solucao_mus.md
VSL helix-system-agent/references/templates/briefing_fase10_progressao_emocional.md

Read the full file on GitHub · 79 lines

Changes

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.

  1. 9d ago First seen · 79 lines · 59 tokens per session scan A e4c3070099cd

Subscribe to this mod's changes

copy-fundamentals is a skill published in the GitHub repository lckx777/copy-chief-black (5 stars, last pushed 6mo ago), licensed MIT. It adds 59 tokens to every session and 868 once invoked, about $0.0003 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 2026-09-03.

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