a-b-test-design
FreeDesign rigorous A/B tests with hypotheses, variants, metrics, and sample size calculations.
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When the user wants to plan, evaluate, or build a free tool for marketing purposes — lead generation, SEO value, or brand awareness. Also use when the user mentions "engineering as marketing," "free tool," "marketing tool," "calculator," "generator," "interactive tool," "lead gen tool," "build a tool for leads," "free resource," "ROI calculator," "grader tool," "audit tool," "should I build a free tool," or "tools for lead gen." Use this whenever someone wants to build something useful and give it away to attract leads or earn links. For downloadable content lead magnets (ebooks, checklists, templates), see lead-magnets.
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See how to installReview the instructions the agent will receive before you install.
You are an expert in engineering-as-marketing strategy. Your goal is to help plan and evaluate free tools that generate leads, attract organic traffic, and build brand awareness.
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 designing a tool strategy, understand:
Business Context - What's the core product? Who is the target audience? What problems do they have?
Goals - Lead generation? SEO/traffic? Brand awareness? Product education?
Resources - Technical capacity to build? Ongoing maintenance bandwidth? Budget for promotion?
| Type | Examples | Best For |
|---|---|---|
| Calculators | ROI, savings, pricing estimators | Decisions involving numbers |
| Generators | Templates, policies, names | Creating something quickly |
| Analyzers | Website graders, SEO auditors | Evaluating existing work |
| Testers | Meta tag preview, speed tests | Checking if something works |
| Libraries | Icon sets, templates, snippets | Reference material |
| Interactive | Tutorials, playgrounds, quizzes | Learning/understanding |
For detailed tool types and examples: See references/tool-types.md
What problems does your audience Google? - Search query research, common questions
What manual processes are tedious? - Spreadsheet tasks, repetitive calculations
What do they need before buying your product? - Assessments, planning, comparisons
What information do they wish they had? - Data they can't easily access, benchmarks
| Approach | Pros | Cons |
|---|---|---|
| Fully gated | Maximum capture | Lower usage |
| Partially gated | Balance of both | Common pattern |
| Ungated + optional | Maximum reach | Lower capture |
| Ungated entirely | Pure SEO/brand | No direct leads |
Tool landing page: "[thing] calculator", "[thing] generator", "free [tool type]"
Supporting content: "How to [use case]", "What is [concept]"
Free tools attract links because:
When: Unique concept, core to brand, high strategic value, have dev capacity
Options: Outgrow, Involve.me, Typeform, Tally, Bubble, Webflow When: Speed to market, limited dev resources, testing concept
When: Something good exists, white-label available, not core differentiator
Account creation, saving results, advanced features, perfect design, every edge case
Rate each factor 1-5:
| Factor | Score |
|---|---|
| Search demand exists | ___ |
| Audience match to buyers | ___ |
| Uniqueness vs. existing | ___ |
| Natural path to product | ___ |
| Build feasibility | ___ |
| Maintenance burden (inverse) | ___ |
| Link-building potential | ___ |
| Share-worthiness | ___ |
25+: Strong candidate | 15-24: Promising | <15: Reconsider
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Design rigorous A/B tests with hypotheses, variants, metrics, and sample size calculations.
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When the user wants to plan, design, or implement an A/B test or experiment, or build a growth experimentation program. Also use when the user mentions "A/B test," "split test," "experiment," "test this change," "variant copy," "multivariate test," "hypothesis," "should I test this," "which version is better," "test two versions," "statistical significance," "how long should I run this test," "growth experiments," "experiment velocity," "experiment backlog," "ICE score," "experimentation program," or "experiment playbook." Use this whenever someone is comparing two approaches and wants to measure which performs better, or when they want to build a systematic experimentation practice. For tracking implementation, see analytics. For page-level conversion optimization, see cro.
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Format CVs for academic positions with publications, grants, and teaching
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Conduct a comprehensive accessibility audit against WCAG guidelines with severity ratings and remediation steps.
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Create accessibility testing plans covering assistive technologies and WCAG criteria.
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When the user wants to generate, iterate, or scale ad creative — headlines, descriptions, primary text, or full ad variations — for any paid advertising platform. Also use when the user mentions 'ad copy variations,' 'ad creative,' 'generate headlines,' 'RSA headlines,' 'bulk ad copy,' 'ad iterations,' 'creative testing,' 'ad performance optimization,' 'write me some ads,' 'Facebook ad copy,' 'Google ad headlines,' 'LinkedIn ad text,' or 'I need more ad variations.' Use this whenever someone needs to produce ad copy at scale or iterate on existing ads. For campaign strategy and targeting, see ads. For landing page copy, see copywriting.
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