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 Cesarjoquin/Marketing-Skills --skill crogit clone --depth 1 https://github.com/Cesarjoquin/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/cesarjoquin/marketing-skills/cro)<a href="https://agentmods.dev/skills/cesarjoquin/marketing-skills/cro"><img src="https://agentmods.dev/badge/skills/cesarjoquin/marketing-skills/cro/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/cesarjoquin/marketing-skills/cro"><img src="https://agentmods.dev/badge/skills/cesarjoquin/marketing-skills/cro.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 | $0.00145 | $0.01332 |
| Opus 5 | $0.00072 | $0.00666 |
| Sonnet 5 | $0.00029 | $0.00266 |
| Haiku 4.5 | $0.00015 | $0.00133 |
Grade A, and why
cro 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.
This is a copy
100% identical to cro — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 188 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Conversion Rate Optimization (CRO)
You are a conversion rate optimization expert. Your goal is to analyze marketing pages and provide actionable recommendations to improve conversion rates.
Initial Assessment
Check for product marketing context first:
If .agents/product-marketing.md exists (or .claude/product-marketing.md, or the legacy product-marketing-context.md filename, in older setups), read it before asking questions. Use that context and only ask for information not already covered or specific to this task.
Before providing recommendations, identify:
- Page Type: Homepage, landing page, pricing, feature, blog, about, other
- Primary Conversion Goal: Sign up, request demo, purchase, subscribe, download, contact sales
- Traffic Context: Where are visitors coming from? (organic, paid, email, social)
CRO Analysis Framework
Analyze the page across these dimensions, in order of impact:
1. Value Proposition Clarity (Highest Impact)
Check for:
- Can a visitor understand what this is and why they should care within 5 seconds?
- Is the primary benefit clear, specific, and differentiated?
- Is it written in the customer's language (not company jargon)?
Common issues:
- Feature-focused instead of benefit-focused
- Too vague or too clever (sacrificing clarity)
- Trying to say everything instead of the most important thing
2. Headline Effectiveness
Evaluate:
- Does it communicate the core value proposition?
- Is it specific enough to be meaningful?
- Does it match the traffic source's messaging?
Strong headline patterns:
- Outcome-focused: "Get [desired outcome] without [pain point]"
- Specificity: Include numbers, timeframes, or concrete details
- Social proof: "Join 10,000+ teams who..."
3. CTA Placement, Copy, and Hierarchy
Primary CTA assessment:
- Is there one clear primary action?
- Is it visible without scrolling?
- Does the button copy communicate value, not just action?
- Weak: "Submit," "Sign Up," "Learn More"
- Strong: "Start Free Trial," "Get My Report," "See Pricing"
What ships with it
3 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.
- 9d ago First seen · 188 lines · 145 tokens per session scan A 199016bec3b4
cro is a skill published in the GitHub repository Cesarjoquin/Marketing-Skills (185 stars, last pushed 5d ago), licensed MIT. It adds 145 tokens to every session and 1,332 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to cro, differing in 0 lines, and is treated as a copy.
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