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 cwinvestments/memstack --skill landing-page-copygit clone --depth 1 https://github.com/cwinvestments/memstackWrote 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/cwinvestments/memstack/landing-page-copy)<a href="https://agentmods.dev/skills/cwinvestments/memstack/landing-page-copy"><img src="https://agentmods.dev/badge/skills/cwinvestments/memstack/landing-page-copy.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Memory Poisoning · line 60 Skill manipulates agent memory, state, or stored context. Memory corruption can alter personality, override safety rules, or cause unpredictable behavior.Fix: Protect agent memory and state from modification by untrusted content. Use read-only memory for critical instructions and validate all state changes.
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 | $0.00062 | $0.03072 |
| Opus 5 | $0.00031 | $0.01536 |
| Sonnet 5 | $0.00012 | $0.00614 |
| Haiku 4.5 | $0.00006 | $0.00307 |
Grade A, and why
memstack-content-landing-page-copy 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 4d 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 — 346 lines — stays where its author put it; the contents beside it link to each section on GitHub.
🎯 Landing Page Copy: Writing conversion-optimized page copy...
Produces structured landing page copy blocks (hero, problem, solution, features, social proof, FAQ, CTA) ready to drop into any template or design.
Activation
When this skill activates, output:
🎯 Landing Page Copy, Gathering product and audience details...
Then execute the protocol below.
| Context | Status |
|---|---|
| User says "write landing page" or "landing page copy" | ACTIVE |
| User says "sales page" or "hero section" or "conversion copy" | ACTIVE |
| Creating copy for a product, service, or signup page | ACTIVE |
| Writing blog content (long-form, educational) | DORMANT: use blog-post |
| Writing email copy | DORMANT: use email-sequence |
| Designing the page layout (not writing copy) | DORMANT |
Anti-patterns
| Trap | Reality Check |
|---|---|
| "Describe all the features" | Features tell. Benefits sell. Lead with what the customer gets, not what the product does. |
| "Make the headline clever" | Clever headlines confuse. Clear headlines convert. Clarity beats creativity every time. |
| "Everyone is our audience" | Speaking to everyone means connecting with no one. Pick one persona and write to them. |
| "Long copy won't be read" | Long copy outperforms short copy when every sentence earns the next. Cut filler, not length. |
| "We don't need social proof yet" | No testimonials? Use stats, logos, case study snippets, or "built by" credibility. Something is always better than nothing. |
Protocol
Step 1: Gather Product Details
If the user hasn't provided details, ask:
I need a few details for the landing page:
- Product/service name: what are we selling?
- Target audience: who is the ideal customer? (role, pain point, situation)
- Key benefit: what's the #1 thing they get? (in their words, not yours)
- Price point: free, freemium, one-time, subscription? (affects urgency strategy)
- CTA goal: what's the primary action? (sign up, buy, book a call, download)
- Existing copy or brand voice: any tone/style to match?
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.
- 4d ago Changed c6bb8bcc8554
- 8d ago First seen · 346 lines · 62 tokens per session scan A c8d8f4cc60be
memstack-content-landing-page-copy is a skill published in the GitHub repository cwinvestments/memstack (419 stars, last pushed 2d ago), licensed MIT. It adds 62 tokens to every session and 3,072 once invoked, about $0.0003 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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