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 swan-gtm/gtm-skills --skill lead-magnet-welcome-emailgit clone --depth 1 https://github.com/swan-gtm/gtm-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/swan-gtm/gtm-skills/lead-magnet-welcome-email)<a href="https://agentmods.dev/skills/swan-gtm/gtm-skills/lead-magnet-welcome-email"><img src="https://agentmods.dev/badge/skills/swan-gtm/gtm-skills/lead-magnet-welcome-email/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/swan-gtm/gtm-skills/lead-magnet-welcome-email"><img src="https://agentmods.dev/badge/skills/swan-gtm/gtm-skills/lead-magnet-welcome-email.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 | $0.00117 | $0.00915 |
| Opus 5 | $0.00059 | $0.00458 |
| Sonnet 5 | $0.00023 | $0.00183 |
| Haiku 4.5 | $0.00012 | $0.00092 |
Grade A, and why
lead-magnet-welcome-email 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 9d 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 — 103 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Write A Lead Magnet Welcome Email
Write a welcome email for new newsletter subscribers that thanks them, sets expectations, delivers a quick win, builds personal connection, and invites engagement — all in under 400 words.
Why This Works
Your welcome email might be the most important email you ever send. It sets expectations for everything that follows. A great welcome email reduces unsubscribes, increases reply rates, and primes people to actually open your future emails. This skill helps you nail it.
How to Use This Skill
When triggered, interview the user one question at a time. Gather:
Newsletter Context:
- What's your newsletter name?
- What will subscribers receive? (topics, format)
- How often do you publish? (weekly, biweekly, daily)
About You: 4. Your name 5. Brief relevant background 6. Why you started this newsletter
Quick Win: 7. Do you have a resource, template, or guide to share in this email? (If not, we'll provide value directly in the email itself)
If any of this info is already available from context or memory, use it — don't ask again.
Email Structure
Write the welcome email following this exact framework:
1. Subject Line
Provide 3 options:
- One straightforward: "Welcome to [Newsletter Name]"
- One benefit-focused: "Here's what you'll get from [Newsletter]"
- One personal: "A quick note from [Your Name]"
2. Opening
A warm, friendly greeting that thanks them for subscribing. No corporate language.
3. Set Expectations
Tell them:
- What they'll receive and when
- What topics you'll cover
- What format the emails will be (length, style)
4. Quick Win
Either share a valuable resource/link OR provide one actionable insight they can use right now. This is key — give them value immediately.
5. Personal Connection
1-2 paragraphs about why you're writing this newsletter and what they can expect from you. Make this genuine, not salesy.
6. Call-to-Action
Invite them to:
- Reply with questions or feedback
- Follow on social media (optional)
- Whitelist the email address
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.
- 9d ago First seen · 103 lines · 117 tokens per session scan A d1175477c0ba
lead-magnet-welcome-email is a skill published in the GitHub repository swan-gtm/gtm-skills (150 stars, last pushed 2d ago), licensed MIT. It adds 117 tokens to every session and 915 once invoked, about $0.0006 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 2026-09-03.
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