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CRO Optimization · rampstackco | DecimalAI

marketingby rampstackco

CRO Optimization

rampstackco/cro-optimization

Source rampstackco/claude-skills ↗License MIT

Run conversion rate optimization through hypothesis-driven testing including audit, hypothesis generation, test design, statistical analysis, and rollout decisions.

SkillScore100Maintained

Automatic

Marketing & Content pack

Last verified 8/19/2026

What it changes

Passed 22 of 22 test cases with the skill, and 17 of 22 without it.

Without skill77%

With skill100%

Checks it passed that the model alone missed

Recommends not shipping the tied or inconclusive variant.
Categorizes decision rules into distinct ship, kill, and extend conditions.
Defines explicit shipping, killing, and extending conditions in the decision criteria.

and 4 more in the full report

5 fixed17 passed either way0 still failing0 broke

Pass-rate lift: +23 pp
Tokens: +75%
Agent turns: 0%
Response time: -25%

Model gemini-3.6-flashMeasured 8/19/2026v222 of 22 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/rampstackco-cro-optimization/SKILL.md https://app.decimal.ai/s/rampstackco-cro-optimization/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add rampstackco-cro-optimization, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/rampstackco-cro-optimization/ and pins it in .decimal/skills.lock

decimalai skills add rampstackco-cro-optimization

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/rampstackco-cro-optimization/SKILL.md https://app.decimal.ai/s/rampstackco-cro-optimization/SKILL.md

Raw file: /s/rampstackco-cro-optimization/SKILL.md ↗ · machine-readable summary at /s/rampstackco-cro-optimization.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 5 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 5

Prompt

Our e-commerce store sees a 68% drop-off at the shipping selection step during checkout on desktop, with 40,000 monthly visitors. Session recordings show shoppers getting surprised by unexpected delivery costs. Please generate a formal CRO experiment plan in markdown following the standard test template layout, including the structured hypothesis statement, audit evidence, test parameters (primary and guardrail metrics, duration, and sample sizes), clear criteria for shipping or killing the test, and post-experiment placeholders for results, decision, and key learnings.

What was checked, without and with the skill
Checked	Without skill	With skill
Formulates the hypothesis starting with the observational audit evidence rather than an 'If... then...' statement.	Missed	Passed
Categorizes decision rules into distinct ship, kill, and extend conditions.	Missed	Passed
Includes post-experiment placeholder sections for test results, final decision, and key lessons.	Passed	Passed

case-01 · gemini-3.6-flash · 8/19/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md269 lines2 files

CRO Optimization

Run conversion rate optimization as a structured discipline: audit → hypothesize → test → decide. Stack-agnostic. Tool-agnostic.

This skill is for running tests against existing pages and flows. For writing landing page copy from scratch, use landing-page-copy. For setting up the analytics that make CRO possible, use analytics-strategy.

When to use

Converting traffic at lower rate than expected
Specific funnel step has high drop-off
Pages with high traffic that could move the needle if optimized
A/B testing infrastructure exists (or can be set up)
Statistical significance and sample size questions

When NOT to use

Without sufficient traffic to test (under ~5,000 monthly conversions per variant)
Pre-launch (no users to test on yet)
Strategy or messaging-level questions that need qualitative research first
Brand-defining choices (CRO can't optimize a fundamentally wrong brand)

Required inputs

The page or flow under optimization
Current conversion rate and traffic volume
Access to analytics (event tracking, funnel data)
An A/B testing tool (or willingness to set one up)
Time and budget for testing (typically 2 to 8 weeks per test)

The framework: 4 phases

1. Audit

Diagnose before treating.

Track record

Benchmark

22 / 22

test cases passed, vs 17 / 22 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/10/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

rampstackco / claude-skills

skills/cro-optimization/SKILL.md

View on GitHub ↗

License MITImported 9/17/2026Version v2Bundled 1 file

Other skills for the same job

Published skills whose descriptions closely match this one, with their headline benchmark lift.

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

CRO Optimization

When to use

When NOT to use

Required inputs

The framework: 4 phases

1. Audit

Track record

Benchmark

Adoption

SkillSafety

Source

Other skills for the same job

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