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 JOINCLASS/ai-ceo-framework --skill generate-covergit clone --depth 1 https://github.com/JOINCLASS/ai-ceo-frameworkWrote 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/joinclass/ai-ceo-framework/generate-cover)<a href="https://agentmods.dev/skills/joinclass/ai-ceo-framework/generate-cover"><img src="https://agentmods.dev/badge/skills/joinclass/ai-ceo-framework/generate-cover/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/joinclass/ai-ceo-framework/generate-cover"><img src="https://agentmods.dev/badge/skills/joinclass/ai-ceo-framework/generate-cover.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 | $0.00000 | $0.00793 |
| Opus 5.5 | $0.00000 | $0.00317 |
| Sonnet 5.5 | $0.00000 | $0.00159 |
| Haiku 4.5 | $0.00000 | $0.00079 |
Grade A, and why
generate-cover 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 — 118 lines — stays where its author put it; the contents beside it link to each section on GitHub.
/generate-cover -- Book Cover Image Generation Skill
Design covers with HTML+CSS and render via Playwright screenshot. Fully code-based, no external tools.
Specifications
- Size: 1600x2560px (standard ebook ratio 1:1.6)
- Format: JPG (cover.jpg)
- Output:
{book-slug}/cover.jpg
Design Guidelines
- Background: Dark gradient (e.g., #1e3a8a -> #0f172a)
- Title: White, bold, large
- Subtitle: White, slightly smaller
- Accent: Orange line (#f97316) or brand color
- Author: White, positioned at bottom
- Overall feel: Technology x Professional
Customize colors and style to match .company/steering/brand.md if available.
Workflow
- Get title and subtitle from the book's config file
- Design cover in HTML+CSS (1600x2560px viewport)
- Save as temporary HTML file
- Launch Playwright headless browser -> open HTML -> screenshot
- Save as JPG
- Delete temporary HTML
HTML Template Structure
<!DOCTYPE html>
<html>
<head>
<style>
body {
margin: 0;
width: 1600px;
height: 2560px;
background: linear-gradient(180deg, #1e3a8a 0%, #0f172a 100%);
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
font-family: 'Segoe UI', Arial, sans-serif;
color: white;
text-align: center;
padding: 120px;
box-sizing: border-box;
}
.accent-line {
width: 200px;
height: 6px;
background: #f97316;
margin: 60px 0;
}
.title {
font-size: 96px;
font-weight: 800;
line-height: 1.2;
margin-bottom: 40px;
}
.subtitle {
font-size: 48px;
font-weight: 400;
opacity: 0.85;
line-height: 1.4;
}
.author {
position: absolute;
bottom: 120px;
font-size: 42px;
font-weight: 300;
opacity: 0.7;
}
</style>
</head>
<body>
<div class="title">{TITLE}</div>
<div class="accent-line"></div>
<div class="subtitle">{SUBTITLE}</div>
<div class="author">{AUTHOR}</div>
</body>
</html>
Prerequisites
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 · 118 lines · 0 tokens per session scan A db51af779bba
generate-cover is a skill published in the GitHub repository JOINCLASS/ai-ceo-framework (61 stars, last pushed yesterday), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 793 tokens. 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 2026-09-26.
generate-cover compared with skills from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| generate-coverJOINCLASS/ai-ceo-framework | Skill | 61 | yesterday | MIT | A | 0 | Claude Code, Codex |
| anti-slop-designsickn33/agentic-awesome-skills | Skill | 50k | yesterday | MIT | A | 34 | Claude Code |
| chakra-ui-builderchakra-ui/chakra-ui | Skill | 41k | today | MIT | A | 214 | Claude Code, Codex |
| visual-ralphYeachan-Heo/oh-my-codex | Skill | 34k | yesterday | MIT | A | 52 | Codex |
| open-design-setupcompozy/compozy | Skill | 2.9k | today | MIT | A | 67 | Claude Code, Codex |
| edit-sitemicrosoft/power-platform-skills | Skill | 1.1k | today | MIT | A | 104 | Claude Code |
| prototype-webnexu-io/html-anything | Skill | 9.5k | yesterday | Apache-2.0 | A | 24 | Claude Code, Codex |