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 naveedharri/benai-skills --skill marketing-os-newslettergit clone --depth 1 https://github.com/naveedharri/benai-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/naveedharri/benai-skills/marketing-os-newsletter)<a href="https://agentmods.dev/skills/naveedharri/benai-skills/marketing-os-newsletter"><img src="https://agentmods.dev/badge/skills/naveedharri/benai-skills/marketing-os-newsletter/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/naveedharri/benai-skills/marketing-os-newsletter"><img src="https://agentmods.dev/badge/skills/naveedharri/benai-skills/marketing-os-newsletter.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 | $0.00225 | $0.03766 |
| Opus 5 | $0.00112 | $0.01883 |
| Sonnet 5 | $0.00045 | $0.00753 |
| Haiku 4.5 | $0.00022 | $0.00377 |
Grade A, and why
marketing-os-newsletter 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 7d 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 — 197 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Marketing OS Newsletter
Write one edition, in the operator's voice, from what the OS already knows. Then put it back in the OS.
This skill carries no context of its own. No ICP file, no offer summary, no voice guide, no example folder. Every one of those exists once in the OS and this skill reads it there. That is the whole point: the original newsletter skill shipped ten reference files and six of them were copies that went stale the moment the business changed. A price baked into a skill is wrong within days.
Run from the OS root. Stay inside that root. Read and write only within it, and do not go looking for other vaults on the machine. Start from zero on identity. Every name, handle, price and number comes from the OS or from the user in this conversation, never from your context, the system username or the folder name. If the OS does not name it, you do not know it.
First, check the OS is there
| State | Do |
|---|---|
No Context/config.md |
Not a Marketing OS. Point at marketing-os-setup and stop |
No Channels/newsletter/ |
The channel does not exist here. Say so and stop |
Both exist, broadcasts/ empty |
Run anyway. Say the style ground truth is missing and name what would fix it |
Both exist, broadcasts/ populated |
Normal run |
The read map
Read these before drafting, and read them from the OS every run. Full contract in references/os-contract.md.
| What you need | Where it lives |
|---|---|
| Instance literals: handles, cadence, connectors | Context/config.md |
| Who the reader is, and the pain to name | Context/icp/*.md, one file per segment |
| The master voice register | Context/personal-brand/voice.md |
| The newsletter delta only | Channels/newsletter/voice.md |
| Role in the funnel, format contract, cadence | Channels/newsletter/strategy.md |
| Subject line mechanics | Channels/newsletter/sop-subject-line-playbook.md |
| The edition structure | Intelligence/research/frameworks/newsletter-structure.md |
| Proven openers, subjects, CTAs | Intelligence/research/swipe/ |
| The style ground truth | Channels/newsletter/broadcasts/, the real sends |
| What has actually performed | Analytics/what-works.md |
| Verbatim customer language | Intelligence/research/voice-of-customer.md |
| The promise, the proof, the live price | Offers/{offer}/offer.md and Offers/{offer}/proof/ |
| Operator background, only if the edition needs it | Context/personal-brand/background.md |
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.
- 7d ago First seen · 197 lines · 225 tokens per session scan A 9478141e3644
marketing-os-newsletter is a skill published in the GitHub repository naveedharri/benai-skills (61 stars, last pushed today), licensed MIT. It adds 225 tokens to every session and 3,766 once invoked, about $0.0011 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 2026-09-05.
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