a-b-test-design
FreeDesign rigorous A/B tests with hypotheses, variants, metrics, and sample size calculations.
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Write a tailored cover letter for a specific job posting
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Run score Not tested
See how to installReview the instructions the agent will receive before you install.
Priority hierarchy: See
references/priority-hierarchy.mdfor conflict resolution.
Write natural, persuasive cover letters that sound like a real professional wrote them.
scripts/
write-cover-letter.md # Cover letter writing agent prompt
Resolve the data directory using references/data-directory.md.
Resolve the data directory, then check prerequisites per references/prerequisites.md. Resume is required; profile is recommended but not blocking.
If $ARGUMENTS is "last" or empty:
DATA_DIR/jobs/ for the most recently modified folderposting.md and resume.md from that folderIf $ARGUMENTS is a URL:
DATA_DIR/jobs/posting.md and resume.mdreferences/browser-setup.mdDATA_DIR/jobs/[company-slug]-[date]/posting.md if not already savedIf the page can't be loaded, ask the user to paste the job description directly.
For the target job folder, check what exists:
posting.md - the job description (required)resume.md - a tailored resume (optional, improves quality significantly)If no tailored resume exists, use the original resume and work history profile directly.
Follow the framework in scripts/write-cover-letter.md. Use:
The cover letter must:
Save to DATA_DIR/jobs/[company-slug]-[date]/cover-letter.md
Present the cover letter to the user with:
Ask if the user wants to adjust:
Apply changes and re-save.
Structure user-facing output with these sections:
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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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