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 kostja94/marketing-skills --skill cardgit clone --depth 1 https://github.com/kostja94/marketing-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/kostja94/marketing-skills/card)<a href="https://agentmods.dev/skills/kostja94/marketing-skills/card"><img src="https://agentmods.dev/badge/skills/kostja94/marketing-skills/card/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/kostja94/marketing-skills/card"><img src="https://agentmods.dev/badge/skills/kostja94/marketing-skills/card.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- 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 | $0.00072 | $0.01112 |
| Opus 5 | $0.00036 | $0.00556 |
| Sonnet 5 | $0.00014 | $0.00222 |
| Haiku 4.5 | $0.00007 | $0.00111 |
Grade A, and why
card 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 12d 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 — 87 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Components: Card Layout
Guides card layout design for scannable, responsive content display. Cards are self-contained containers that group related content; used in grids for blog posts, products, templates, tools, features, galleries, and integrations.
When invoking: On first use, if helpful, open with 1–2 sentences on what this skill covers and why it matters, then provide the main output. On subsequent use or when the user asks to skip, go directly to the main output.
Card Anatomy
| Element | Purpose |
|---|---|
| Container | Border, background, shadow; consistent padding |
| Image / Thumbnail | Visual anchor; consistent aspect ratio (1:1, 4:3 common) |
| Title | Clear; keyword-rich where relevant |
| Description / Metadata | Supporting text; date, author, category |
| CTA | Action button or link; "View," "Use," "Connect," etc. |
Principle: One card = one topic. Keep each card focused for scannability.
Card Types by Use Case
| Type | Typical Elements | Page Skill |
|---|---|---|
| Product card | Image, name, price, CTA (Add to cart, View) | products-page-generator |
| Template card | Thumbnail, name, short description, "Use" or "Preview" CTA | template-page-generator |
| Tool card | Name, one-line benefit, CTA to tool page | tools-page-generator |
| Feature card | Name, benefit, optional screenshot | features-page-generator |
| Gallery / Showcase item | Thumbnail, title, creator, link | showcase-page-generator |
| Integration card | Logo, name, short description, "Connect" or "Install" | integrations-page-generator |
| Blog / Article card | Cover image, title, excerpt, date, author | blog-page-generator, article-page-generator |
| Resource card | Thumbnail, title, format (guide, webinar), CTA | resources-page-generator |
Layout & Responsiveness
- Grid: CSS Grid
repeat(auto-fill, minmax())or Flexbox; columns adapt to viewport - Mobile: Single column on small screens; 2–4 columns on desktop
- Consistency: Same padding, spacing, and aspect ratios across cards
- Hover: Subtle elevation (shadow, translate-y); avoid scale that causes layout shift (CLS)
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.
- 12d ago First seen · 87 lines · 72 tokens per session scan A ce98d67c1488
card is a skill published in the GitHub repository kostja94/marketing-skills (963 stars, last pushed 3mo ago), licensed MIT. It adds 72 tokens to every session and 1,112 once invoked, about $0.0004 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.
Other skills, from other repositories
efecto-social-media
Design social media assets with Efecto — Instagram posts, carousels, stories, YouTube thumbnails, TikTok covers, Twitter/X images, LinkedIn slides, Pinterest pins, and Facebook graphics. Use when asked to "design a post", "create a carousel", "make a thumbnail", "design social media", or any social content task.…
SEO Content Optimizer
Analyzes and rewrites content to maximize search engine visibility without sounding robotic.
saas-landing-pages
SaaS landing page strategy, planning, copy, and design for developers and technical founders building web-first software products — SaaS, developer tools/APIs, and enterprise software. Use this skill for any question about landing page strategy, conversion optimization, landing page copy, hero sections, CTAs, pricing…
analytics-tracking
Design, audit, and improve analytics tracking systems that produce reliable, decision-ready data.
onboarding-cro
When the user wants to optimize post-signup onboarding, user activation, first-run experience, or time-to-value. Also use when the user mentions "onboarding flow," "activation rate," "user activation," "first-run experience," "empty states," "onboarding checklist," "aha moment," "new user experience," "users aren't…
animate
Review a feature and enhance it with purposeful animations, micro-interactions, and motion effects that improve usability and delight. Use when the user mentions adding animation, transitions, micro-interactions, motion design, hover effects, or making the UI feel more alive.