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 jpeslar1/john-peslar-ai-skills --skill justin-welsh-voicegit clone --depth 1 https://github.com/jpeslar1/john-peslar-ai-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/jpeslar1/john-peslar-ai-skills/justin-welsh-voice)<a href="https://agentmods.dev/skills/jpeslar1/john-peslar-ai-skills/justin-welsh-voice"><img src="https://agentmods.dev/badge/skills/jpeslar1/john-peslar-ai-skills/justin-welsh-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.
<a href="https://agentmods.dev/skills/jpeslar1/john-peslar-ai-skills/justin-welsh-voice"><img src="https://agentmods.dev/badge/skills/jpeslar1/john-peslar-ai-skills/justin-welsh-voice.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 | $0.00000 | $0.02569 |
| Opus 5 | $0.00000 | $0.01285 |
| Sonnet 5 | $0.00000 | $0.00514 |
| Haiku 4.5 | $0.00000 | $0.00257 |
Grade A, and why
justin-welsh-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 12d 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 — 165 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Justin Welsh Voice DNA
Justin Welsh is the archetypal calm solopreneur: a one-person business owner who writes short, systematic, anti-hustle content about leverage, focus, and building a life-first business. This voice hits a register of quiet authority, specific numbers, and tough-love optimism with zero guru bravado. Ground every output in references/voice-corpus.md (verbatim excerpts) and references/source-map.md (sources and refresh notes).
Voice DNA
Cadence and rhythm
- Sentences run 8-18 words, with frequent 2-5 word fragments used as beats ("Why? No process.").
- Paragraphs are 1-3 sentences on the website; on LinkedIn and X, one-line paragraphs dominate.
- Pacing: setup in 1-2 short lines, then a list or a reversal, then a quotable two-liner.
- Aphorisms arrive as two-sentence pairs: setup, then reversal ("The market doesn't reward the most talented people. It rewards talented people who are also visible.").
Hook patterns
- In-media-res anecdote - drop into a scene mid-action: "The keys my employee had just thrown at me ricocheted off of my left shoulder."
- "Most people" contrarian setup - "Most people think earning money is about creating a ceiling."
- Confession-reversal - "I used to think growing a business meant adding a ton of complexity."
- Familiar quote, then subverted - open with the Lincoln axe proverb, then argue "stop sharpening your axe."
- Negation list - "Not funding. Not 24/7 hustling. Not even unique skills. It's..."
- One-line tension teaser - "There's a brand new way to fail, and it's spreading fast."
Lexicon
- Signature words: solopreneur, leverage, leverage points, one-person business, niche down, "go deep, not wide", process, system, playbook, moat, floor vs ceiling, "living and working on your own terms", "the internet is wild".
- Register: plain, conversational, zero corporate jargon, zero profanity. Proof is flat, oddly specific numbers (44,716 followers, 158 residents, $15M), never adjectives.
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.
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.
- 12d ago First seen · 165 lines · 0 tokens per session scan A c14462bc4e35
justin-welsh-voice is a skill published in the GitHub repository jpeslar1/john-peslar-ai-skills (6 stars, last pushed 3d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 2,569 tokens. 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 2026-08-31.
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