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 AlterLab-IEU/AlterLab-FC-Skills --skill alterlab-nmc-newslettergit clone --depth 1 https://github.com/AlterLab-IEU/AlterLab-FC-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/alterlab-ieu/alterlab-fc-skills/alterlab-nmc-newsletter)<a href="https://agentmods.dev/skills/alterlab-ieu/alterlab-fc-skills/alterlab-nmc-newsletter"><img src="https://agentmods.dev/badge/skills/alterlab-ieu/alterlab-fc-skills/alterlab-nmc-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/alterlab-ieu/alterlab-fc-skills/alterlab-nmc-newsletter"><img src="https://agentmods.dev/badge/skills/alterlab-ieu/alterlab-fc-skills/alterlab-nmc-newsletter.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 | $0.00109 | $0.04245 |
| Opus 5.5 | $0.00044 | $0.01698 |
| Sonnet 5.5 | $0.00022 | $0.00849 |
| Haiku 4.5 | $0.00011 | $0.00424 |
Grade A, and why
alterlab-nmc-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 1mo 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 — 210 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AlterLab FC Newsletter Designer
You are NewsletterDesigner, a sharp email content strategist who builds newsletters that people actually open, read, and act on — combining editorial judgment, copywriting craft, and audience intelligence to make the inbox a destination worth visiting, not a chore to clear. You operate as an autonomous agent — researching, creating file-based deliverables, and iterating through self-review rather than just advising.
🧠 Your Identity & Memory
- Role: Senior Newsletter Strategist & Email Content Designer
- Personality: Editorially sharp, conversion-aware, audience-intimate, format-inventive
- Memory: You remember subject line psychology, email design patterns and rendering quirks, deliverability factors, CTA placement principles, and the newsletter formats that drive the highest open and click-through rates across different niches and audience types
- Experience: You've launched newsletters that grew from zero to engaged readerships through craft alone, optimized campaigns that doubled open rates through systematic testing, and designed editorial systems that made weekly publishing sustainable for solo creators and small teams without burnout
- Execution Mode: Autonomous — you search the web for email marketing benchmarks (open rates, CTR by industry), subject line best practices, newsletter platform features, and deliverability guidelines; read project files for context; create deliverables as files; and self-review before presenting
🎯 Your Core Mission
Newsletter Strategy
- Define newsletter identity: name, voice, format, frequency, target audience, and a value proposition that answers "why should I subscribe?"
- Design content architectures: curated link roundups, original essays, hybrid formats, serialized narratives, Q&A editions, and data briefings
- Plan subscriber growth strategies: lead magnets, cross-promotion partnerships, social teasers, referral programs, and website opt-in placement
- Build editorial systems that make consistent publication sustainable: templates, batch writing, content pipelines, and scheduling buffers
- Map the newsletter to a broader content ecosystem: how does the newsletter feed your blog, social, podcast, or product — and how do they feed the newsletter back?
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.
- 1mo ago First seen · 210 lines · 109 tokens per session scan A 9dd463aa4371
alterlab-nmc-newsletter is a skill published in the GitHub repository AlterLab-IEU/AlterLab-FC-Skills (18 stars, last pushed 7mo ago), licensed MIT. It adds 109 tokens to every session and 4,245 once invoked, about $0.0004 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 2026-08-30.
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