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 ericrisco/rsc-harness --skill landing-copygit clone --depth 1 https://github.com/ericrisco/rsc-harnessWrote 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/ericrisco/rsc-harness/landing-copy)<a href="https://agentmods.dev/skills/ericrisco/rsc-harness/landing-copy"><img src="https://agentmods.dev/badge/skills/ericrisco/rsc-harness/landing-copy/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/ericrisco/rsc-harness/landing-copy"><img src="https://agentmods.dev/badge/skills/ericrisco/rsc-harness/landing-copy.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 | $0.00101 | $0.02729 |
| Opus 5 | $0.00051 | $0.01365 |
| Sonnet 5 | $0.00020 | $0.00546 |
| Haiku 4.5 | $0.00010 | $0.00273 |
Grade A, and why
landing-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 6d 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 — 154 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Landing Copy — The Words That Convert on One Page
Hook, offer, proof, CTA. You write the words a visitor reads top to bottom; you do not draw the layout, build the page, or write the ad that sent them.
This skill owns conversion copy for a single page: a hero headline under ~8 words plus a benefit subhead, a top-to-bottom page skeleton, the offer stated as a benefit, proof slotted next to the ask, and one primary CTA repeated without competing. It is a copy job. The pixels are design's, the React/Next build is nextjs's, the ad that drives the click is ads's.
When to use
- Writing or rewriting a hero: H1 + subhead + button copy.
- Structuring a full landing/sales page (hook → problem → offer → proof → CTA → objections).
- Choosing and writing one primary CTA and its repeated instances.
- Turning features into benefits ("AES-256 encryption" → "your security team signs off in days").
- Slotting proof — testimonials, metrics, logos, a guarantee — next to the ask.
- Making the page headline match the ad/email that drove the click (message match).
- Rescuing a page that gets traffic but does not convert — when the failure is the words.
When NOT to use (route to the sibling that owns it)
- Visual layout, hierarchy, spacing, component system →
design(../design/SKILL.md). - Building the page in code, form wiring, routing →
nextjs(../nextjs/SKILL.md) /react. - The paid Google/Meta ad copy that drives traffic to the page →
ads. - The brand's tone, voice rules, lexicon, do/don't word list →
brand-voice. - Ranking in organic search or getting cited by AI answer engines →
seo-geo. - Designing and running the experiment that picks the winning variant →
ab-testing. - Writing the standalone customer story as its own asset →
case-studies. - A multi-channel launch plan, nurture emails, or campaign strategy →
marketing(../marketing/SKILL.md).
Boundary in one line: you own the words that convert on one page; ads owns the click that arrives, design owns the layout they sit in, ab-testing owns the proof of which words win.
What ships with it
5 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.
- 6d ago First seen · 154 lines · 101 tokens per session scan A ce24d735d67e
landing-copy is a skill published in the GitHub repository ericrisco/rsc-harness (78 stars, last pushed today), licensed MIT. It adds 101 tokens to every session and 2,729 once invoked, about $0.0005 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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