cro
An agent skill by coreyhaines31, from coreyhaines31/marketingskills. Tags: analytics, conversion, optimization, testing, web.
What it does
When the user wants to optimize, improve, or increase conversions on any marketing page or form — including homepage, landing pages, pricing pages, feature pages, lead capture forms, or contact forms. Also use when the user says 'CRO,' 'conversion rate optimization,' 'this page isn't converting,' 'improve conversions,' 'why isn't this page working,' 'my landing page sucks,' 'form abandonment,' 'nobody's converting,' 'low conversion rate,' or 'this page needs work.' Use this even if the user just shares a URL and asks for feedback. For signup/registration flows, see signup. For post-signup activation, see onboarding. For popups/modals, see popups.
Install
With the skills CLI, which installs into Claude Code, Codex, Cursor and other agents:
npx skills add coreyhaines31/marketingskills --skill croOr copy the skill folder into Claude Code's skills directory by hand (~/.claude/skills for every project, or .claude/skills inside one):
git clone --depth 1 https://github.com/coreyhaines31/marketingskills
cp -r marketingskills/skills/cro ~/.claude/skills/croSafety box score
Grade A, minimal risk: 7 of 100 risk points, rated 2026-10-21. The grade rates what the skill and its scripts can reach on the machine of whoever installs it, across eight categories from shell execution to secrets access. How the score works.
This is a read-only CRO advisory skill for marketing pages and forms. It does not ship executable code or make changes, but it can read local context files if present and points to one external GitHub playbook link for form-routing guidance.
| Category | Level | Why |
|---|---|---|
| Code & shell execution | 0 (none) | No scripts, shell commands, or code evaluation are included; the skill is only markdown guidance and reference docs. |
| Network access | 1 (low) | `SKILL.md` points to an external GitHub playbook link for form routing: `https://github.com/coreyhaines31/marketingskills/blob/main/skills/revops/references/inbound-routing.md`. |
| Filesystem reach | 1 (low) | The skill explicitly tells the agent to read local context files if present, including `.agents/product-marketing.md`, `.claude/product-marketing.md`, or `product-marketing-context.md`. |
| Secrets & credentials | 0 (none) | It does not ask for passwords, tokens, keychain data, `.env` files, or other secrets. |
| Privilege & persistence | 0 (none) | No sudo, global installs, services, shell startup edits, or OS-level changes are requested. |
| Instruction hijack surface | 0 (none) | There are no instructions to ignore higher-priority rules, hide behavior, or follow untrusted remote instructions. |
| Irreversible actions | 0 (none) | The skill only analyzes pages and suggests optimizations; it does not send messages, publish, book, pay, deploy, or delete anything. |
| Transparency | 0 (none) | All shipped files are readable markdown/config; there are no binaries, minified assets, or decoded-at-runtime code. |
Before installing
- Check whether you want the skill to read `.agents/product-marketing.md` / `.claude/product-marketing.md` on your machine.
- Review the external GitHub playbook link in `SKILL.md` and confirm remote doc fetches are acceptable.
- Skim `references/form.md` and `references/experiments.md` to verify they are guidance only, not runnable scripts.
Rated 2026-10-21 by an automated review of 4 files from the skill's repository.
Source
- Repository
- coreyhaines31/marketingskills (all skills from this repository)
- Path
- skills/cro/SKILL.md
- Branch
- main
- Collection
- marketingskills
- Updated
- 2026-09-21
Related skills
- popups — When the user wants to create or optimize popups, modals, overlays, slide-ins, or banners for conversion purposes.
- ab-testing — When the user wants to plan, design, or implement an A/B test or experiment, or build a growth experimentation program.
- paywalls — When the user wants to create or optimize in-app paywalls, upgrade screens, upsell modals, or feature gates.
- ads — When the user wants help with paid advertising campaigns on Google Ads, Meta (Facebook/Instagram), LinkedIn, Twitter/X, or other ad platforms.
- aso — When the user wants to audit or optimize an App Store or Google Play listing.
- onboarding — When the user wants to optimize post-signup onboarding, user activation, first-run experience, or time-to-value.