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Offer Testing Playbooks Skill · gtmagents | DecimalAI

marketingby gtmagents

Offer Testing Playbooks Skill

gtmagents/offer-testing

Source gtmagents/gtm-agents ↗License Apache-2.0

Use when designing copy experiments to optimize hooks, offers, and CTAs.

SkillScore100Maintained

Automatic

Marketing & Content pack

Last verified 8/23/2026

What it changes

Passed 23 of 23 test cases with the skill, and 21 of 23 without it.

Without skill91%

With skill100%

Checks it passed that the model alone missed

Map this choice to Variable Selection under proof elements or offer framing.
Define statistical significance analysis methods such as chi-square, z-test, or a Bayesian approach.

2 fixed21 passed either way0 still failing0 broke

Pass-rate lift: +9 pp
Tokens: -6%
Agent turns: 0%
Response time: -15%

Model gemini-3.6-flashMeasured 8/23/2026v123 of 23 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/gtmagents-offer-testing/SKILL.md https://app.decimal.ai/s/gtmagents-offer-testing/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add gtmagents-offer-testing, 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/gtmagents-offer-testing/ and pins it in .decimal/skills.lock

decimalai skills add gtmagents-offer-testing

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

curl -fsSL --create-dirs -o .claude/skills/gtmagents-offer-testing/SKILL.md https://app.decimal.ai/s/gtmagents-offer-testing/SKILL.md

Raw file: /s/gtmagents-offer-testing/SKILL.md ↗ · machine-readable summary at /s/gtmagents-offer-testing.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 2 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 2

Prompt

We are planning a copy refresh cycle for our ad creative to test customer quotes against statistics. Which framework step governs this choice?

What was checked, without and with the skill
Checked	Without skill	With skill
Map this choice to Variable Selection under proof elements or offer framing.	Missed	Passed

case-23 · gemini-3.6-flash · 8/23/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md25 linessingle file

Offer Testing Playbooks Skill

When to Use

Planning subject line/CTA/offer tests across email, ads, or landing pages.
Validating new positioning or pricing language.
Running copy refresh cycles for campaigns.

Framework

Hypothesis – statement of expected lift + rationale.
Variable Selection – hook, CTA, body copy, offer framing, proof element.
Segmentation – define audience splits and holdouts.
Metrics – primary KPI + guardrails (opens, CTR, CVR, CPL, unsub, spam).
Analysis – statistical significance (chi-square, z-test) or Bayesian approach.

Templates

Experiment brief (variable, control, variant, KPI, sample size, duration).
Results report (metric table, significance, insight, next steps).
Prioritization matrix (ICE/RICE scoring).

Tips

Limit to one variable per test to isolate learnings.
Ensure minimum sample sizes per channel before declaring winners.
Log tests and learnings in a shared repository.

Track record

Benchmark

23 / 23

test cases passed, vs 21 / 23 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 — 8/3/2026

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

gtmagents / gtm-agents

plugins/copywriting/skills/offer-testing/SKILL.md

View on GitHub ↗

License Apache-2.0Imported 8/3/2026Version v1

Other skills for the same job

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

gtmagents/ab-testingUse when designing experiments for subject lines, offers, cadences, or journeys.Close match+9 pp pass-rate 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

Offer Testing Playbooks Skill

When to Use

Framework

Templates

Tips

Track record

Benchmark

Adoption

SkillSafety

Source

Other skills for the same job

Related skills