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 simbajigege/book2skills --skill contagious-viral-content-bergergit clone --depth 1 https://github.com/simbajigege/book2skillsWrote 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/simbajigege/book2skills/contagious-viral-content-berger)<a href="https://agentmods.dev/skills/simbajigege/book2skills/contagious-viral-content-berger"><img src="https://agentmods.dev/badge/skills/simbajigege/book2skills/contagious-viral-content-berger/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/simbajigege/book2skills/contagious-viral-content-berger"><img src="https://agentmods.dev/badge/skills/simbajigege/book2skills/contagious-viral-content-berger.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 | $0.00039 | $0.02684 |
| Opus 5 | $0.00019 | $0.01342 |
| Sonnet 5 | $0.00008 | $0.00537 |
| Haiku 4.5 | $0.00004 | $0.00268 |
Grade A, and why
contagious-viral-content-berger 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 — 200 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Overview
This skill encodes Jonah Berger's STEPPS framework from Contagious: Why Things Catch On. Based on years of scientific research at Wharton, it explains why certain content, products, and ideas spread — and provides actionable principles for engineering virality.
Core insight: Virality isn't born, it's made. The message matters more than the messenger. Any product or idea — even a boring blender — can be engineered to spread.
Key fact: 93% of word of mouth happens offline, not on social media. The platform is not the strategy; the psychology of sharing is.
When to Use This Skill
Use this skill for queries that match the trigger phrases in the description and require applying the decision framework from Contagious: Why Things Catch On rather than summarizing the book.
The STEPPS Framework
S — Social Currency
People share things that make them look good.
We share content that enhances our image: makes us seem smart, funny, interesting, or in-the-know. Content that provides social currency gives people something worth talking about — a status signal they can pass on.
Three mechanisms for social currency:
- Inner Remarkability — Find the remarkable, surprising, or counterintuitive about your product/idea. Make it the conversation hook.
- Game Mechanics — Create achievements, milestones, or status levels that people want to display (frequent flier status, loyalty programs, leaderboards).
- Make People Feel Like Insiders — Exclusivity, secrets, and limited access make information feel more valuable to share. "Please Don't Tell" bar (hidden behind a phone booth) had zero advertising but constant full reservations because discovery itself was social currency.
Key question: "If someone shares this, does it make them look good, interesting, or in-the-know?"
T — Triggers
Top of mind, tip of tongue.
People share what's on their mind. Triggers are environmental cues that prompt people to think about your product or idea. The more frequently your product is triggered, the more word of mouth it generates.
What ships with it
4 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 · 200 lines · 39 tokens per session scan A ba53464f32a3
contagious-viral-content-berger is a skill published in the GitHub repository simbajigege/book2skills (163 stars, last pushed 17d ago), licensed MIT. It adds 39 tokens to every session and 2,684 once invoked, about $0.0002 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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