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gary-halbert-voice

gary-halbert-voice is a skill for Claude Code from jpeslar1/john-peslar-ai-skills. It costs 200 tokens per session (3,446 once invoked), scanned A, original, MIT.

A writing guide for creating direct-response sales letters and offer-focused emails in a Gary Halbert-inspired voice. It also stresses learning what a market wants before writing.

In plain words
What is it for?
Use it to draft sales letters, promotional emails, and other direct-response copy. It guides letter structure, short paragraphs, conversational rhythm, and market-first messaging.
Why use it?
It gives sales copy a consistent, conversational style instead of leaving tone and structure to guesswork. It also helps keep the message focused on the buyer and the offer.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: positional $N argument.

Part of the voice-dna plugin — 79 skills shipped together

not rated 12repo +1 changed 18d ago A scan 200 tokens original MIT

Good fit Use it to draft sales letters, promotional emails, and other direct-response copy. It guides letter structure, short paragraphs, conversational rhythm, and market-first messaging.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/jpeslar1/john-peslar-ai-skills/gary-halbert-voice
View source ↗ jpeslar1/john-peslar-ai-skills
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 jpeslar1/john-peslar-ai-skills --skill gary-halbert-voice
Clone the repo
git clone --depth 1 https://github.com/jpeslar1/john-peslar-ai-skills

Made for: Claude Code.

Or install voice-dna, the plugin that ships this one along with the rest of its 79 skills.

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 gary-halbert-voice

README.md
[![agentmods](https://agentmods.dev/badge/skills/jpeslar1/john-peslar-ai-skills/gary-halbert-voice/github.svg)](https://agentmods.dev/skills/jpeslar1/john-peslar-ai-skills/gary-halbert-voice)
Your own site
<a href="https://agentmods.dev/skills/jpeslar1/john-peslar-ai-skills/gary-halbert-voice"><img src="https://agentmods.dev/badge/skills/jpeslar1/john-peslar-ai-skills/gary-halbert-voice/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 gary-halbert-voice

Your own site · 80×15
<a href="https://agentmods.dev/skills/jpeslar1/john-peslar-ai-skills/gary-halbert-voice"><img src="https://agentmods.dev/badge/skills/jpeslar1/john-peslar-ai-skills/gary-halbert-voice.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 200 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,446 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 $0.00200 $0.03446
Opus 5.5 $0.00080 $0.01378
Sonnet 5.5 $0.00040 $0.00689
Haiku 4.5 $0.00020 $0.00345

Measured 18d ago against content hash 8df056797874, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

gary-halbert-voice 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 18d 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.

gary-halbert-voice/SKILL.md · 200 lines

How it starts

The opening of the file, as written. The whole thing — 200 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Gary Halbert Voice DNA

Gary Halbert is the street-fighter ancestor of every offer-driven email ever sent. His copy does not sound like advertising, it sounds like a letter from a slightly dangerous friend who has information you need and is not going to be polite about it. Two things carry the voice: an obsessive belief that the market matters more than the copy, and a conversational rhythm built from ellipses, short paragraphs, and sudden bursts of capitalised emphasis. Ground every output in references/voice-corpus.md (short excerpts, with a copyright warning you must read) and references/source-map.md (sources and refresh notes).

Voice DNA

Cadence and rhythm

  • A letter, not an article. Dateline, salutation, body, sign-off, P.S. The furniture is never skipped.
  • Paragraphs of one to three sentences with generous white space. Many are a single line.
  • Ellipses used as breath marks inside sentences, not as trailing-off. "So, I got to thinking, "Well, hell... if what I write helps people this much, it should be available to everyone... even if... they can't afford to subscribe.""
  • Sentences vary wildly. A twelve-word declarative sits next to a forty-word run held together by ellipses and dashes.
  • Direct address in nearly every paragraph. "you", "guess what?", "here's why".
  • The P.S. is a real weapon and often carries the strongest line in the letter.

Hook patterns

  1. The confession of ignorance about the reader - "I have no idea how you got to this website." It disarms and it flatters at the same time.
  2. The stacked speculation - offer three possible reasons the reader is here, then dismiss all of them and get to the point.
  3. The outrageous claim, immediately backed - make the biggest claim in the piece, then say "Here's why" and pay it off with specifics.
  4. The origin date and the number - "Back in September of 1986, I began publishing a newsletter." A date and a price make it real.
  5. The dateline itself - place and time as the opening, which frames the whole piece as a personal letter.
  6. The enemy named - identify the thing you both hate and swear about it mildly.

Read the full file on GitHub · 200 lines

Files

What ships with it

2 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.

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. 18d ago Changed · +200 tokens per session 8df056797874
  2. 1mo ago First seen · 200 lines · 0 tokens per session scan A bdfbe3eeee87

Subscribe to this mod's changes

gary-halbert-voice is a skill published in the GitHub repository jpeslar1/john-peslar-ai-skills (12 stars, last pushed 18d ago), licensed MIT. It adds 200 tokens to every session and 3,446 once invoked, about $0.0008 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 2026-09-09.

Marketing and SEOWriting and docs
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gary-halbert-voice next to 6 skills from other repositories
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