# Science of Apps AI Skills library

> 200 free, copy-paste AI skills for ChatGPT, Claude, Gemini and Microsoft Copilot, organised into 16 job profiles by demand. Each skill is a ready-to-run set of instructions: paste it into an AI assistant, send the input it asks for, and the first reply is the finished result in a fixed format.

- Library: https://scienceofapps.com/skills/
- All full skill definitions in one file: https://scienceofapps.com/skills/llms-full.txt
- The same skills as an article: https://scienceofapps.com/blog/ai-skills-by-job/
- Future-skills forecast: https://scienceofapps.com/blog/future-ai-skills/
- Install guide with screenshots (Claude, ChatGPT, Gemini, Copilot, Claude Code): https://scienceofapps.com/skills/how-to-install/
- Whole library as a git repository: git -c http.version=HTTP/1.1 clone https://scienceofapps.com/skills/ai-skills.git

Each skill has a page (problem, outcome preview, install steps per AI product, FAQ) and a plain-text SKILL.md in the open Agent Skills format (YAML front matter with name and description, then the instructions). Skills are free to use and adapt.

## How to install a skill

1. Copy the skill: Press Copy skill on any card to copy its full instructions.
2. Paste it into your AI assistant: Paste it as the first message of a new chat in ChatGPT, Claude, Gemini or Copilot — or into a Project, Gem or custom GPT to keep it.
3. Send your input: Send what the skill asks for (a draft, a table, a transcript). The first reply is the finished result in the skill's format.

To keep a skill in Claude: download its ZIP (https://scienceofapps.com/skills/zip/<skill>.zip), then Settings → Skills → Add → Upload skill. In Claude Code: copy the skill's folder into ~/.claude/skills/. In OpenAI's Codex app: copy it into ~/.codex/skills/ (or Customize → Skills → Add → Create skill).

## Software engineering (20 skills)

These 20 skills turn ChatGPT, Claude or Gemini into a specialist for one engineering job each — reading a stack trace, reviewing a diff, writing tests, explaining legacy code or planning a migration. Paste one in once, send it your code, and the first reply is something you can run, commit or put in a ticket. [Category page](https://scienceofapps.com/skills/engineering/)

- [Stack trace debugger](https://scienceofapps.com/skills/engineering/stack-trace-debugger/) ([SKILL.md](https://scienceofapps.com/skills/engineering/stack-trace-debugger/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/stack-trace-debugger.zip)): The most likely root cause, the exact line to change and a command to confirm the fix. For: Software engineer.
- [Pull request reviewer](https://scienceofapps.com/skills/engineering/pull-request-reviewer/) ([SKILL.md](https://scienceofapps.com/skills/engineering/pull-request-reviewer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/pull-request-reviewer.zip)): A review ranked by severity: bugs first, then risks, then optional nits, each with a suggested fix. For: Senior engineer / reviewer.
- [Unit test writer](https://scienceofapps.com/skills/engineering/unit-test-writer/) ([SKILL.md](https://scienceofapps.com/skills/engineering/unit-test-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/unit-test-writer.zip)): A ready-to-run test file covering the happy path, edge cases and failures for your function. For: Software engineer.
- [Legacy code explainer](https://scienceofapps.com/skills/engineering/legacy-code-explainer/) ([SKILL.md](https://scienceofapps.com/skills/engineering/legacy-code-explainer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/legacy-code-explainer.zip)): A plain-English walkthrough of what the code does, its hidden side effects and where it's safe to change. For: Software engineer joining a codebase.
- [Regex builder](https://scienceofapps.com/skills/engineering/regex-builder/) ([SKILL.md](https://scienceofapps.com/skills/engineering/regex-builder/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/regex-builder.zip)): A tested regex for your flavour, explained token by token, with matching and non-matching examples. For: Developer / data engineer.
- [SQL query optimizer](https://scienceofapps.com/skills/engineering/sql-query-optimizer/) ([SKILL.md](https://scienceofapps.com/skills/engineering/sql-query-optimizer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/sql-query-optimizer.zip)): A rewritten query, the indexes to add and how to verify the speed-up with EXPLAIN. For: Backend engineer / DBA.
- [API docs writer](https://scienceofapps.com/skills/engineering/api-docs-writer/) ([SKILL.md](https://scienceofapps.com/skills/engineering/api-docs-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/api-docs-writer.zip)): Reference docs for each endpoint: purpose, parameters, example request, example response and errors. For: Backend engineer / developer advocate.
- [Commit message writer](https://scienceofapps.com/skills/engineering/commit-message-writer/) ([SKILL.md](https://scienceofapps.com/skills/engineering/commit-message-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/commit-message-writer.zip)): A Conventional Commits message with a clear subject line and a body that explains why. For: Software engineer.
- [Refactor planner](https://scienceofapps.com/skills/engineering/code-refactor-planner/) ([SKILL.md](https://scienceofapps.com/skills/engineering/code-refactor-planner/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/code-refactor-planner.zip)): A refactor broken into small, safe, independently shippable steps with a test at each step. For: Tech lead.
- [Security code review](https://scienceofapps.com/skills/engineering/security-review/) ([SKILL.md](https://scienceofapps.com/skills/engineering/security-review/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/security-review.zip)): A list of vulnerabilities mapped to the OWASP Top 10, each with severity and a fixed code snippet. For: Security engineer / developer.
- [Dockerfile generator](https://scienceofapps.com/skills/engineering/dockerfile-generator/) ([SKILL.md](https://scienceofapps.com/skills/engineering/dockerfile-generator/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/dockerfile-generator.zip)): A small multi-stage Dockerfile and .dockerignore for your app, with each line explained. For: DevOps engineer.
- [CI pipeline writer](https://scienceofapps.com/skills/engineering/ci-pipeline-writer/) ([SKILL.md](https://scienceofapps.com/skills/engineering/ci-pipeline-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/ci-pipeline-writer.zip)): A working CI workflow file that installs, lints, tests and builds on every pull request. For: DevOps engineer.
- [Incident postmortem writer](https://scienceofapps.com/skills/engineering/incident-postmortem/) ([SKILL.md](https://scienceofapps.com/skills/engineering/incident-postmortem/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/incident-postmortem.zip)): A blameless postmortem with timeline, impact, root cause, contributing factors and owned actions. For: SRE / engineering manager.
- [Code translator](https://scienceofapps.com/skills/engineering/code-translator/) ([SKILL.md](https://scienceofapps.com/skills/engineering/code-translator/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/code-translator.zip)): Idiomatic code in the target language with notes on every behaviour that differs. For: Software engineer.
- [Architecture decision record](https://scienceofapps.com/skills/engineering/architecture-decision-record/) ([SKILL.md](https://scienceofapps.com/skills/engineering/architecture-decision-record/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/architecture-decision-record.zip)): An ADR with context, options considered, the decision and its consequences, ready to commit. For: Tech lead / architect.
- [Log pattern analyzer](https://scienceofapps.com/skills/engineering/log-pattern-analyzer/) ([SKILL.md](https://scienceofapps.com/skills/engineering/log-pattern-analyzer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/log-pattern-analyzer.zip)): Grouped error patterns with counts, first-seen times and the most likely culprit. For: SRE / backend engineer.
- [Spec to engineering tasks](https://scienceofapps.com/skills/engineering/spec-to-tasks/) ([SKILL.md](https://scienceofapps.com/skills/engineering/spec-to-tasks/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/spec-to-tasks.zip)): A list of small engineering tasks with acceptance criteria, dependencies and rough sizes. For: Engineering lead.
- [AI coding agent brief](https://scienceofapps.com/skills/engineering/prompt-to-app-spec/) ([SKILL.md](https://scienceofapps.com/skills/engineering/prompt-to-app-spec/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/prompt-to-app-spec.zip)): A precise brief for an AI coding agent: goal, files, constraints, acceptance tests and what not to touch. For: Developer using AI coding agents.
- [Dependency upgrade planner](https://scienceofapps.com/skills/engineering/dependency-upgrade-planner/) ([SKILL.md](https://scienceofapps.com/skills/engineering/dependency-upgrade-planner/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/dependency-upgrade-planner.zip)): An ordered upgrade plan with breaking changes that affect your code and a test checklist. For: Software engineer.
- [README writer](https://scienceofapps.com/skills/engineering/readme-writer/) ([SKILL.md](https://scienceofapps.com/skills/engineering/readme-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/readme-writer.zip)): A README with what it does, quick start, configuration, examples and contribution notes. For: Developer / open-source maintainer.

## Marketing (18 skills)

These 18 skills give marketers a specialist for each recurring job — ad copy that stays inside character limits, SEO and AI-search briefs, email sequences, positioning statements, landing-page critiques and campaign reports. Each one asks for the inputs a good marketer would, then returns a draft you can ship or test the same day. [Category page](https://scienceofapps.com/skills/marketing/)

- [Ad variant generator](https://scienceofapps.com/skills/marketing/ad-variant-generator/) ([SKILL.md](https://scienceofapps.com/skills/marketing/ad-variant-generator/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/ad-variant-generator.zip)): Ten ad variants across five angles, each inside Google or Meta character limits, ready to upload. For: Performance marketer.
- [SEO content brief](https://scienceofapps.com/skills/marketing/seo-content-brief/) ([SKILL.md](https://scienceofapps.com/skills/marketing/seo-content-brief/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/seo-content-brief.zip)): A brief with search intent, outline, questions to answer, entities to cover and internal links. For: SEO specialist / content lead.
- [AI search (GEO) rewriter](https://scienceofapps.com/skills/marketing/geo-answer-rewriter/) ([SKILL.md](https://scienceofapps.com/skills/marketing/geo-answer-rewriter/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/geo-answer-rewriter.zip)): Your page rewritten so answer engines can lift it: answer-first lead, quotable facts, Q&A blocks. For: SEO / content marketer.
- [Email nurture sequence](https://scienceofapps.com/skills/marketing/email-nurture-sequence/) ([SKILL.md](https://scienceofapps.com/skills/marketing/email-nurture-sequence/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/email-nurture-sequence.zip)): A five-email sequence with timing, subject lines, preview text, body and one CTA each. For: Email / lifecycle marketer.
- [Positioning statement](https://scienceofapps.com/skills/marketing/positioning-statement/) ([SKILL.md](https://scienceofapps.com/skills/marketing/positioning-statement/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/positioning-statement.zip)): A positioning statement, a one-line tagline and the proof points that back it up. For: Product marketer / founder.
- [Landing page critique](https://scienceofapps.com/skills/marketing/landing-page-critique/) ([SKILL.md](https://scienceofapps.com/skills/marketing/landing-page-critique/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/landing-page-critique.zip)): A prioritised list of conversion issues tied to UX principles, with rewritten copy for the top fixes. For: Growth / CRO marketer.
- [Social post repurposer](https://scienceofapps.com/skills/marketing/social-post-repurposer/) ([SKILL.md](https://scienceofapps.com/skills/marketing/social-post-repurposer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/social-post-repurposer.zip)): Platform-native posts for LinkedIn, X, Instagram and a newsletter blurb from one source piece. For: Social media manager.
- [Campaign brief](https://scienceofapps.com/skills/marketing/campaign-brief/) ([SKILL.md](https://scienceofapps.com/skills/marketing/campaign-brief/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/campaign-brief.zip)): A one-page campaign brief: objective, audience, insight, message, channels, budget split and KPIs. For: Marketing manager.
- [Persona from reviews](https://scienceofapps.com/skills/marketing/customer-persona-from-reviews/) ([SKILL.md](https://scienceofapps.com/skills/marketing/customer-persona-from-reviews/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/customer-persona-from-reviews.zip)): Evidence-based personas with jobs, pains and quotes, each backed by the reviews you pasted. For: Product marketer.
- [Content calendar planner](https://scienceofapps.com/skills/marketing/content-calendar/) ([SKILL.md](https://scienceofapps.com/skills/marketing/content-calendar/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/content-calendar.zip)): A four-week content calendar with topics, formats, channels, owners and goals. For: Content marketer.
- [Brand voice guide](https://scienceofapps.com/skills/marketing/brand-voice-guide/) ([SKILL.md](https://scienceofapps.com/skills/marketing/brand-voice-guide/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/brand-voice-guide.zip)): A brand voice guide with traits, do/don't examples, a word list and before/after rewrites. For: Brand / content lead.
- [Competitor messaging teardown](https://scienceofapps.com/skills/marketing/competitor-messaging-teardown/) ([SKILL.md](https://scienceofapps.com/skills/marketing/competitor-messaging-teardown/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/competitor-messaging-teardown.zip)): A side-by-side table of competitor claims, audiences and gaps you can own. For: Product marketer.
- [UTM and tracking plan](https://scienceofapps.com/skills/marketing/utm-and-tracking-plan/) ([SKILL.md](https://scienceofapps.com/skills/marketing/utm-and-tracking-plan/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/utm-and-tracking-plan.zip)): A UTM naming convention and a ready list of tagged URLs for your campaign. For: Marketing ops / analyst.
- [Product description writer](https://scienceofapps.com/skills/marketing/product-description-writer/) ([SKILL.md](https://scienceofapps.com/skills/marketing/product-description-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/product-description-writer.zip)): A product description with a benefit-led opening, scannable bullets, specs and FAQs. For: E-commerce marketer.
- [Campaign report writer](https://scienceofapps.com/skills/marketing/campaign-report-writer/) ([SKILL.md](https://scienceofapps.com/skills/marketing/campaign-report-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/campaign-report-writer.zip)): A one-page report: headline result, what drove it, what underperformed and next steps. For: Marketing manager.
- [Webinar promo kit](https://scienceofapps.com/skills/marketing/webinar-promo-kit/) ([SKILL.md](https://scienceofapps.com/skills/marketing/webinar-promo-kit/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/webinar-promo-kit.zip)): A title, landing page copy, three emails and social posts for your webinar. For: Event / demand-gen marketer.
- [Newsletter issue writer](https://scienceofapps.com/skills/marketing/newsletter-writer/) ([SKILL.md](https://scienceofapps.com/skills/marketing/newsletter-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/newsletter-writer.zip)): A complete newsletter issue with a subject line, a lead story and curated sections in your voice. For: Content marketer / creator.
- [App Store listing optimizer](https://scienceofapps.com/skills/marketing/aso-keyword-optimizer/) ([SKILL.md](https://scienceofapps.com/skills/marketing/aso-keyword-optimizer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/aso-keyword-optimizer.zip)): A title, subtitle, keyword field and first lines of description within App Store and Google Play limits. For: App marketer / ASO specialist.

## Sales (16 skills)

These 16 skills cover the sales work that eats the day: researching an account, writing a cold email worth replying to, preparing discovery questions, answering objections, summarising calls into CRM notes and writing proposals. Paste a skill once, give it the deal context, and get a draft you can send or log in minutes. [Category page](https://scienceofapps.com/skills/sales/)

- [Cold email writer](https://scienceofapps.com/skills/sales/cold-email-writer/) ([SKILL.md](https://scienceofapps.com/skills/sales/cold-email-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/cold-email-writer.zip)): Three short, personalised cold emails (under 120 words) with subject lines and a soft call to action. For: SDR / account executive.
- [Discovery call prep](https://scienceofapps.com/skills/sales/discovery-call-prep/) ([SKILL.md](https://scienceofapps.com/skills/sales/discovery-call-prep/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/discovery-call-prep.zip)): A one-page call plan: account snapshot, hypotheses, 12 discovery questions and next-step options. For: Account executive.
- [Objection handler](https://scienceofapps.com/skills/sales/objection-handler/) ([SKILL.md](https://scienceofapps.com/skills/sales/objection-handler/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/objection-handler.zip)): A response to each objection that acknowledges it, asks a question and reframes with evidence. For: Sales rep.
- [Call notes to CRM](https://scienceofapps.com/skills/sales/call-notes-to-crm/) ([SKILL.md](https://scienceofapps.com/skills/sales/call-notes-to-crm/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/call-notes-to-crm.zip)): Structured CRM fields, a follow-up email and the next action, from a messy transcript. For: Account executive.
- [Sales proposal writer](https://scienceofapps.com/skills/sales/proposal-writer/) ([SKILL.md](https://scienceofapps.com/skills/sales/proposal-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/proposal-writer.zip)): A proposal with the client's problem in their words, solution, scope, timeline, price and next steps. For: Account executive / consultant.
- [Account research brief](https://scienceofapps.com/skills/sales/account-research-brief/) ([SKILL.md](https://scienceofapps.com/skills/sales/account-research-brief/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/account-research-brief.zip)): A one-page brief: what they do, likely priorities, trigger events and three outreach angles. For: SDR / account executive.
- [Follow-up sequence](https://scienceofapps.com/skills/sales/follow-up-sequence/) ([SKILL.md](https://scienceofapps.com/skills/sales/follow-up-sequence/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/follow-up-sequence.zip)): A four-touch follow-up sequence that adds value each time instead of 'just checking in'. For: Sales rep.
- [Pipeline review](https://scienceofapps.com/skills/sales/pipeline-review/) ([SKILL.md](https://scienceofapps.com/skills/sales/pipeline-review/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/pipeline-review.zip)): A deal-by-deal risk review with red flags, a realistic forecast and coaching questions. For: Sales manager.
- [LinkedIn outreach writer](https://scienceofapps.com/skills/sales/linkedin-outreach/) ([SKILL.md](https://scienceofapps.com/skills/sales/linkedin-outreach/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/linkedin-outreach.zip)): A connection note (≤ 300 characters) and a three-message follow-up that starts a conversation. For: SDR / founder.
- [Competitive battlecard](https://scienceofapps.com/skills/sales/battlecard-builder/) ([SKILL.md](https://scienceofapps.com/skills/sales/battlecard-builder/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/battlecard-builder.zip)): A one-page battlecard: where you win, where you lose, landmines to set and answers to their claims. For: Sales enablement.
- [Quote builder](https://scienceofapps.com/skills/sales/pricing-quote-calculator/) ([SKILL.md](https://scienceofapps.com/skills/sales/pricing-quote-calculator/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/pricing-quote-calculator.zip)): An itemised quote with tiers, discounts, GST or VAT and totals, with every calculation shown. For: Sales rep / ops.
- [Deal qualification check](https://scienceofapps.com/skills/sales/deal-qualification-scorer/) ([SKILL.md](https://scienceofapps.com/skills/sales/deal-qualification-scorer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/deal-qualification-scorer.zip)): A BANT or MEDDICC scorecard for the deal, the gaps and the questions that close them. For: Account executive / sales manager.
- [Renewal risk plan](https://scienceofapps.com/skills/sales/renewal-risk-plan/) ([SKILL.md](https://scienceofapps.com/skills/sales/renewal-risk-plan/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/renewal-risk-plan.zip)): A risk score, the signals behind it and a 30-day save plan for the account. For: Account manager / customer success.
- [Tricky reply drafter](https://scienceofapps.com/skills/sales/sales-email-reply/) ([SKILL.md](https://scienceofapps.com/skills/sales/sales-email-reply/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/sales-email-reply.zip)): A calm, firm reply that protects the deal and the price, in under 150 words. For: Sales rep.
- [Case study writer](https://scienceofapps.com/skills/sales/case-study-writer/) ([SKILL.md](https://scienceofapps.com/skills/sales/case-study-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/case-study-writer.zip)): A one-page case study in challenge → solution → result format, with a pull quote placeholder. For: Sales / product marketing.
- [Demo script builder](https://scienceofapps.com/skills/sales/demo-script/) ([SKILL.md](https://scienceofapps.com/skills/sales/demo-script/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/demo-script.zip)): A 20-minute demo script built around the buyer's top three pains, with talk track and checkpoints. For: Account executive / solutions engineer.

## Data & analytics (14 skills)

These 14 skills turn an AI assistant into a careful analyst: plain English to SQL, the right spreadsheet formula, a cleaning plan for a messy export, a sober read of an A/B test and dashboard specs your engineers can build. Each one shows its working, so you can check the logic before you trust the number. [Category page](https://scienceofapps.com/skills/data/)

- [SQL from plain English](https://scienceofapps.com/skills/data/sql-from-plain-english/) ([SKILL.md](https://scienceofapps.com/skills/data/sql-from-plain-english/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/sql-from-plain-english.zip)): A correct, commented SQL query for your database, with the assumptions it makes spelled out. For: Data / business analyst.
- [Spreadsheet formula helper](https://scienceofapps.com/skills/data/spreadsheet-formula-helper/) ([SKILL.md](https://scienceofapps.com/skills/data/spreadsheet-formula-helper/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/spreadsheet-formula-helper.zip)): The exact formula for Excel or Google Sheets, explained, with an example of the output. For: Analyst or Excel / Sheets user.
- [A/B test reader](https://scienceofapps.com/skills/data/ab-test-reader/) ([SKILL.md](https://scienceofapps.com/skills/data/ab-test-reader/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/ab-test-reader.zip)): A plain-English verdict with lift, confidence interval, p-value and whether the sample is big enough. For: Growth / product analyst.
- [Data cleaning plan](https://scienceofapps.com/skills/data/data-cleaning-plan/) ([SKILL.md](https://scienceofapps.com/skills/data/data-cleaning-plan/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/data-cleaning-plan.zip)): A step-by-step cleaning plan with the code (pandas, SQL or spreadsheet steps) to do it. For: Data analyst.
- [Dashboard spec writer](https://scienceofapps.com/skills/data/dashboard-spec/) ([SKILL.md](https://scienceofapps.com/skills/data/dashboard-spec/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/dashboard-spec.zip)): A dashboard spec: the questions it answers, metrics with definitions, charts, filters and layout. For: Analytics lead / PM.
- [Metric definition doc](https://scienceofapps.com/skills/data/metric-definition-doc/) ([SKILL.md](https://scienceofapps.com/skills/data/metric-definition-doc/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/metric-definition-doc.zip)): A precise metric definition: formula, inclusions, exclusions, grain, owner and SQL. For: Analytics engineer / data analyst.
- [Survey analysis](https://scienceofapps.com/skills/data/survey-analysis/) ([SKILL.md](https://scienceofapps.com/skills/data/survey-analysis/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/survey-analysis.zip)): Coded themes with counts, representative quotes and what to do about each. For: Research / insights analyst.
- [Chart picker](https://scienceofapps.com/skills/data/chart-recommender/) ([SKILL.md](https://scienceofapps.com/skills/data/chart-recommender/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/chart-recommender.zip)): The best chart for your data and message, with labelling advice and a mock-up in text. For: Analyst presenting data.
- [Cohort retention read](https://scienceofapps.com/skills/data/cohort-retention-analysis/) ([SKILL.md](https://scienceofapps.com/skills/data/cohort-retention-analysis/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/cohort-retention-analysis.zip)): A plain-English read of your cohort table: where users drop, which cohorts improved and what to test. For: Growth analyst.
- [Python analysis script](https://scienceofapps.com/skills/data/python-analysis-script/) ([SKILL.md](https://scienceofapps.com/skills/data/python-analysis-script/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/python-analysis-script.zip)): A commented pandas script that loads your file, does the analysis and saves a chart and summary. For: Data analyst.
- [KPI drop investigator](https://scienceofapps.com/skills/data/kpi-anomaly-explainer/) ([SKILL.md](https://scienceofapps.com/skills/data/kpi-anomaly-explainer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/kpi-anomaly-explainer.zip)): A structured investigation plan that rules out data issues first, then segments to find the cause. For: Analyst / business owner.
- [Data story writer](https://scienceofapps.com/skills/data/data-story-summary/) ([SKILL.md](https://scienceofapps.com/skills/data/data-story-summary/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/data-story-summary.zip)): A one-page summary: the headline, three supporting points, the 'so what' and a recommendation. For: Analyst presenting to leadership.
- [Simple forecast builder](https://scienceofapps.com/skills/data/forecast-builder/) ([SKILL.md](https://scienceofapps.com/skills/data/forecast-builder/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/forecast-builder.zip)): A transparent forecast with method, formulas, base, high and low cases. For: Analyst / planner.
- [Event tracking plan](https://scienceofapps.com/skills/data/event-tracking-plan/) ([SKILL.md](https://scienceofapps.com/skills/data/event-tracking-plan/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/event-tracking-plan.zip)): A tracking plan: events, properties, naming convention and the questions each answers. For: Product analyst.

## Product management (14 skills)

These 14 skills cover the product manager's writing and thinking load: one-page PRDs, user stories with testable acceptance criteria, prioritisation with RICE, interview synthesis, experiment design, release notes and stakeholder updates. Paste one in, give it your messy notes, and get a document your team can work from. [Category page](https://scienceofapps.com/skills/product/)

- [One-page PRD](https://scienceofapps.com/skills/product/one-page-prd/) ([SKILL.md](https://scienceofapps.com/skills/product/one-page-prd/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/one-page-prd.zip)): A one-page PRD: problem, goal metric, users, scope, requirements, risks and open questions. For: Product manager.
- [User story writer](https://scienceofapps.com/skills/product/user-story-writer/) ([SKILL.md](https://scienceofapps.com/skills/product/user-story-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/user-story-writer.zip)): User stories in INVEST shape with Given/When/Then acceptance criteria and edge cases. For: Product owner / PM.
- [RICE prioritizer](https://scienceofapps.com/skills/product/rice-prioritizer/) ([SKILL.md](https://scienceofapps.com/skills/product/rice-prioritizer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/rice-prioritizer.zip)): A ranked backlog with RICE scores, the maths shown and the assumptions to challenge. For: Product manager.
- [Interview synthesis](https://scienceofapps.com/skills/product/interview-synthesis/) ([SKILL.md](https://scienceofapps.com/skills/product/interview-synthesis/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/interview-synthesis.zip)): Themes, jobs to be done, pains and opportunities from your interviews, each backed by quotes. For: PM / UX researcher.
- [Experiment designer](https://scienceofapps.com/skills/product/experiment-designer/) ([SKILL.md](https://scienceofapps.com/skills/product/experiment-designer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/experiment-designer.zip)): An experiment plan with hypothesis, variants, metric, sample size, duration and decision rule. For: Growth PM.
- [Release notes writer](https://scienceofapps.com/skills/product/release-notes-writer/) ([SKILL.md](https://scienceofapps.com/skills/product/release-notes-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/release-notes-writer.zip)): User-facing release notes that lead with benefits, plus an internal changelog version. For: PM / product marketer.
- [Stakeholder update](https://scienceofapps.com/skills/product/stakeholder-update/) ([SKILL.md](https://scienceofapps.com/skills/product/stakeholder-update/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/stakeholder-update.zip)): A five-line update: status, progress, risks, decisions needed and next steps. For: Product manager.
- [Feedback triage](https://scienceofapps.com/skills/product/feature-feedback-triage/) ([SKILL.md](https://scienceofapps.com/skills/product/feature-feedback-triage/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/feature-feedback-triage.zip)): Feedback grouped into problems (not solutions), counted, with segment and revenue impact. For: PM / support lead.
- [Competitive feature matrix](https://scienceofapps.com/skills/product/competitive-feature-matrix/) ([SKILL.md](https://scienceofapps.com/skills/product/competitive-feature-matrix/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/competitive-feature-matrix.zip)): A feature matrix with parity, gaps and differentiators, and what to build or ignore. For: Product manager.
- [Onboarding flow audit](https://scienceofapps.com/skills/product/onboarding-flow-audit/) ([SKILL.md](https://scienceofapps.com/skills/product/onboarding-flow-audit/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/onboarding-flow-audit.zip)): A step-by-step review of your onboarding with friction points, the behavioural principle behind each and fixes. For: PM / growth.
- [Pricing tier designer](https://scienceofapps.com/skills/product/pricing-tier-designer/) ([SKILL.md](https://scienceofapps.com/skills/product/pricing-tier-designer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/pricing-tier-designer.zip)): Two or three tiers built on a value metric, with features per tier and the reasoning. For: PM / founder.
- [Metrics tree builder](https://scienceofapps.com/skills/product/product-metrics-tree/) ([SKILL.md](https://scienceofapps.com/skills/product/product-metrics-tree/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/product-metrics-tree.zip)): A metrics tree from your North Star to the input metrics each team can own. For: Product manager.
- [Launch checklist](https://scienceofapps.com/skills/product/launch-checklist/) ([SKILL.md](https://scienceofapps.com/skills/product/launch-checklist/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/launch-checklist.zip)): A launch checklist across product, engineering, marketing, support, legal and analytics with owners. For: Product manager.
- [AI feature spec](https://scienceofapps.com/skills/product/ai-feature-spec/) ([SKILL.md](https://scienceofapps.com/skills/product/ai-feature-spec/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/ai-feature-spec.zip)): A spec for an AI feature covering the job, model behaviour, evaluation set, guardrails and fallbacks. For: AI product manager.

## Customer support (12 skills)

These 12 skills help support agents and leads answer faster without sounding like a bot: replies that acknowledge, answer and close the loop, ticket triage by urgency, macro libraries, help-centre articles from resolved tickets and weekly themes from CSAT comments. Each one keeps your policy as the source of truth. [Category page](https://scienceofapps.com/skills/customer-support/)

- [Empathetic reply writer](https://scienceofapps.com/skills/customer-support/empathetic-reply-writer/) ([SKILL.md](https://scienceofapps.com/skills/customer-support/empathetic-reply-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/empathetic-reply-writer.zip)): A reply that acknowledges the feeling, answers the question, states the next step and closes the loop. For: Customer support agent.
- [Ticket triage](https://scienceofapps.com/skills/customer-support/ticket-triage/) ([SKILL.md](https://scienceofapps.com/skills/customer-support/ticket-triage/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/ticket-triage.zip)): Each ticket tagged with category, priority, sentiment and the team it should go to. For: Support lead / support ops.
- [Macro library builder](https://scienceofapps.com/skills/customer-support/macro-library-builder/) ([SKILL.md](https://scienceofapps.com/skills/customer-support/macro-library-builder/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/macro-library-builder.zip)): A library of reusable macros for your top issues, with placeholders and when to use each. For: Support operations.
- [Help article from tickets](https://scienceofapps.com/skills/customer-support/help-article-from-tickets/) ([SKILL.md](https://scienceofapps.com/skills/customer-support/help-article-from-tickets/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/help-article-from-tickets.zip)): A help-centre article with a clear title, quick answer, steps, screenshots to add and related links. For: Help-centre writer.
- [Escalation summary](https://scienceofapps.com/skills/customer-support/escalation-summary/) ([SKILL.md](https://scienceofapps.com/skills/customer-support/escalation-summary/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/escalation-summary.zip)): A crisp escalation note: issue, impact, steps to reproduce, what's been tried and what's needed. For: Support agent.
- [CSAT comment analysis](https://scienceofapps.com/skills/customer-support/csat-theme-analysis/) ([SKILL.md](https://scienceofapps.com/skills/customer-support/csat-theme-analysis/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/csat-theme-analysis.zip)): Themes behind low and high scores with counts, quotes and the top fixes. For: Support team lead.
- [Policy explainer](https://scienceofapps.com/skills/customer-support/refund-policy-explainer/) ([SKILL.md](https://scienceofapps.com/skills/customer-support/refund-policy-explainer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/refund-policy-explainer.zip)): A plain-English explanation of the policy for the customer's exact case, with what happens next. For: Support agent.
- [Support chatbot flow](https://scienceofapps.com/skills/customer-support/chatbot-flow-designer/) ([SKILL.md](https://scienceofapps.com/skills/customer-support/chatbot-flow-designer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/chatbot-flow-designer.zip)): A conversation flow for your top intents, with clear exits to a human. For: Support operations.
- [Bug report from ticket](https://scienceofapps.com/skills/customer-support/bug-report-from-ticket/) ([SKILL.md](https://scienceofapps.com/skills/customer-support/bug-report-from-ticket/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/bug-report-from-ticket.zip)): An engineering-ready bug report with steps, expected vs actual, environment and severity. For: Support agent / QA.
- [Multilingual reply](https://scienceofapps.com/skills/customer-support/multilingual-reply/) ([SKILL.md](https://scienceofapps.com/skills/customer-support/multilingual-reply/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/multilingual-reply.zip)): A natural reply in the customer's language and register, with an English version for the record. For: Support agent.
- [Support QA reviewer](https://scienceofapps.com/skills/customer-support/support-qa-scorecard/) ([SKILL.md](https://scienceofapps.com/skills/customer-support/support-qa-scorecard/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/support-qa-scorecard.zip)): A scored review of a ticket against a rubric with specific coaching feedback. For: Support team lead / QA.
- [Outage communications](https://scienceofapps.com/skills/customer-support/outage-customer-comms/) ([SKILL.md](https://scienceofapps.com/skills/customer-support/outage-customer-comms/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/outage-customer-comms.zip)): Status page updates, an in-app banner, a social reply and a resolution email for the incident. For: Support lead / status page owner.

## Finance & accounting (12 skills)

These 12 skills take the writing and checking out of finance work: variance commentary from budget-vs-actual tables, 13-week cash-flow structures, invoice and expense checks, unit economics, pricing maths and plain-English summaries for founders and boards. Each one shows its formulas so the numbers can be audited. [Category page](https://scienceofapps.com/skills/finance/)

- [Variance commentary](https://scienceofapps.com/skills/finance/variance-commentary/) ([SKILL.md](https://scienceofapps.com/skills/finance/variance-commentary/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/variance-commentary.zip)): Line-by-line variance commentary with amounts, percentages and the likely drivers to confirm. For: FP&A analyst / controller.
- [13-week cash forecast](https://scienceofapps.com/skills/finance/cash-flow-forecast/) ([SKILL.md](https://scienceofapps.com/skills/finance/cash-flow-forecast/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/cash-flow-forecast.zip)): A 13-week cash-flow forecast structure with formulas, filled from your numbers. For: Finance manager / founder.
- [Invoice checker](https://scienceofapps.com/skills/finance/invoice-checker/) ([SKILL.md](https://scienceofapps.com/skills/finance/invoice-checker/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/invoice-checker.zip)): A pass/fail check of an invoice with every error, missing field and calculation listed. For: Accounts payable / bookkeeper.
- [Unit economics calculator](https://scienceofapps.com/skills/finance/unit-economics-calculator/) ([SKILL.md](https://scienceofapps.com/skills/finance/unit-economics-calculator/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/unit-economics-calculator.zip)): CAC, LTV, LTV:CAC, payback period and contribution margin, with each formula shown. For: Founder / finance lead.
- [Expense claim checker](https://scienceofapps.com/skills/finance/expense-policy-checker/) ([SKILL.md](https://scienceofapps.com/skills/finance/expense-policy-checker/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/expense-policy-checker.zip)): Each claim checked against your policy, with violations, missing receipts and the amount to approve. For: Finance operations.
- [Financial statement explainer](https://scienceofapps.com/skills/finance/financial-statement-explainer/) ([SKILL.md](https://scienceofapps.com/skills/finance/financial-statement-explainer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/financial-statement-explainer.zip)): A plain-English explanation of your statements with key ratios and three things to watch. For: Founder / non-finance manager.
- [Board finance summary](https://scienceofapps.com/skills/finance/board-finance-summary/) ([SKILL.md](https://scienceofapps.com/skills/finance/board-finance-summary/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/board-finance-summary.zip)): A one-slide financial summary: headline, five numbers, what changed and what you need. For: CFO / founder.
- [Price and margin calculator](https://scienceofapps.com/skills/finance/pricing-margin-calculator/) ([SKILL.md](https://scienceofapps.com/skills/finance/pricing-margin-calculator/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/pricing-margin-calculator.zip)): The selling price for your target margin, with markup, margin and break-even shown. For: Small business owner / finance.
- [Payment reminder writer](https://scienceofapps.com/skills/finance/accounts-receivable-chaser/) ([SKILL.md](https://scienceofapps.com/skills/finance/accounts-receivable-chaser/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/accounts-receivable-chaser.zip)): A polite-to-firm sequence of payment reminders for each stage of lateness. For: Accounts receivable / freelancer.
- [Department budget builder](https://scienceofapps.com/skills/finance/budget-builder/) ([SKILL.md](https://scienceofapps.com/skills/finance/budget-builder/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/budget-builder.zip)): A bottom-up budget by line and month tied to your plan's drivers, with assumptions listed. For: Department head / FP&A.
- [Audit prep checklist](https://scienceofapps.com/skills/finance/audit-prep-checklist/) ([SKILL.md](https://scienceofapps.com/skills/finance/audit-prep-checklist/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/audit-prep-checklist.zip)): A checklist of documents and reconciliations by area, with owners and due dates. For: Accountant / controller.
- [Financial report summarizer](https://scienceofapps.com/skills/finance/investment-memo-summary/) ([SKILL.md](https://scienceofapps.com/skills/finance/investment-memo-summary/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/investment-memo-summary.zip)): A one-page summary of the report: results, guidance, risks and questions, with page references. For: Analyst / investor relations.

## Operations & project management (12 skills)

These 12 skills handle the documents that keep operations running: SOPs from a messy explanation, meeting minutes with owners and dates, RACI charts, risk registers, weekly status reports, vendor comparisons and process maps. Paste one in, give it the raw notes, and get a document people can follow. [Category page](https://scienceofapps.com/skills/operations/)

- [Meeting minutes with owners](https://scienceofapps.com/skills/operations/meeting-minutes-with-owners/) ([SKILL.md](https://scienceofapps.com/skills/operations/meeting-minutes-with-owners/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/meeting-minutes-with-owners.zip)): Minutes with decisions, action items (owner and due date) and open questions, ready to send. For: Project manager / chief of staff.
- [SOP writer](https://scienceofapps.com/skills/operations/sop-writer/) ([SKILL.md](https://scienceofapps.com/skills/operations/sop-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/sop-writer.zip)): A standard operating procedure with purpose, roles, numbered steps, checks and exceptions. For: Operations manager.
- [RACI chart builder](https://scienceofapps.com/skills/operations/raci-chart/) ([SKILL.md](https://scienceofapps.com/skills/operations/raci-chart/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/raci-chart.zip)): A RACI matrix for your project's activities and roles, with conflicts flagged. For: Project / program manager.
- [Risk register](https://scienceofapps.com/skills/operations/risk-register/) ([SKILL.md](https://scienceofapps.com/skills/operations/risk-register/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/risk-register.zip)): A risk register with likelihood, impact, score, owner, mitigation and trigger for each risk. For: Project manager.
- [Project status report](https://scienceofapps.com/skills/operations/status-report/) ([SKILL.md](https://scienceofapps.com/skills/operations/status-report/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/status-report.zip)): A weekly status report with RAG by workstream, milestones, risks and decisions needed. For: Project manager.
- [Vendor comparison](https://scienceofapps.com/skills/operations/vendor-comparison/) ([SKILL.md](https://scienceofapps.com/skills/operations/vendor-comparison/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/vendor-comparison.zip)): A weighted scoring matrix of vendors with total cost, risks and a recommendation. For: Operations / procurement.
- [Process mapper](https://scienceofapps.com/skills/operations/process-map/) ([SKILL.md](https://scienceofapps.com/skills/operations/process-map/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/process-map.zip)): A step-by-step process map with handoffs, wait times, bottlenecks and a Mermaid diagram. For: Operations / business analyst.
- [OKR writer](https://scienceofapps.com/skills/operations/okr-writer/) ([SKILL.md](https://scienceofapps.com/skills/operations/okr-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/okr-writer.zip)): Objectives with three measurable key results each, plus initiatives and how to score them. For: Team lead / operations.
- [Inbox triage](https://scienceofapps.com/skills/operations/email-triage/) ([SKILL.md](https://scienceofapps.com/skills/operations/email-triage/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/email-triage.zip)): Your emails sorted into act now, reply today, delegate, read later and ignore, with draft replies. For: Executive assistant / manager.
- [Shift schedule planner](https://scienceofapps.com/skills/operations/shift-schedule-planner/) ([SKILL.md](https://scienceofapps.com/skills/operations/shift-schedule-planner/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/shift-schedule-planner.zip)): A weekly roster that meets coverage needs and availability, with conflicts flagged. For: Operations / store manager.
- [IT helpdesk troubleshooter](https://scienceofapps.com/skills/operations/it-helpdesk-troubleshooter/) ([SKILL.md](https://scienceofapps.com/skills/operations/it-helpdesk-troubleshooter/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/it-helpdesk-troubleshooter.zip)): Step-by-step troubleshooting for the user's exact device and problem, from simplest fix to escalation. For: IT administrator.
- [Phishing email checker](https://scienceofapps.com/skills/operations/phishing-email-checker/) ([SKILL.md](https://scienceofapps.com/skills/operations/phishing-email-checker/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/phishing-email-checker.zip)): A verdict on a suspicious email with the red flags found and what to do next. For: Employee / IT security.

## HR & recruiting (12 skills)

These 12 skills help recruiters and HR teams write fairer, faster: job descriptions that screen for skills not pedigree, structured interview kits and scorecards, onboarding plans, performance review drafts and plain-English policy explainers. They are built to support decisions people make, never to rank or reject candidates on their own. [Category page](https://scienceofapps.com/skills/hr/)

- [Inclusive job description](https://scienceofapps.com/skills/hr/inclusive-job-description/) ([SKILL.md](https://scienceofapps.com/skills/hr/inclusive-job-description/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/inclusive-job-description.zip)): A clear, inclusive job description with real must-haves, outcomes and salary range placeholder. For: Recruiter / hiring manager.
- [Structured interview kit](https://scienceofapps.com/skills/hr/structured-interview-kit/) ([SKILL.md](https://scienceofapps.com/skills/hr/structured-interview-kit/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/structured-interview-kit.zip)): An interview kit with competencies, behavioural questions, follow-ups and a scoring guide. For: Hiring manager / recruiter.
- [Interview scorecard](https://scienceofapps.com/skills/hr/candidate-scorecard/) ([SKILL.md](https://scienceofapps.com/skills/hr/candidate-scorecard/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/candidate-scorecard.zip)): A scorecard turning interview notes into evidence per competency, with a hire / no-hire rationale. For: Hiring manager.
- [Offer letter drafter](https://scienceofapps.com/skills/hr/offer-letter-drafter/) ([SKILL.md](https://scienceofapps.com/skills/hr/offer-letter-drafter/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/offer-letter-drafter.zip)): A complete offer letter from your terms, with every variable highlighted for checking. For: HR / people operations.
- [30-60-90 onboarding plan](https://scienceofapps.com/skills/hr/onboarding-plan-30-60-90/) ([SKILL.md](https://scienceofapps.com/skills/hr/onboarding-plan-30-60-90/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/onboarding-plan-30-60-90.zip)): A 30-60-90 day plan with goals, people to meet, training and check-ins. For: Hiring manager / HR.
- [Performance review writer](https://scienceofapps.com/skills/hr/performance-review-writer/) ([SKILL.md](https://scienceofapps.com/skills/hr/performance-review-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/performance-review-writer.zip)): A balanced review with specific examples, impact, growth areas and goals for next period. For: People manager.
- [HR policy explainer](https://scienceofapps.com/skills/hr/policy-explainer/) ([SKILL.md](https://scienceofapps.com/skills/hr/policy-explainer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/policy-explainer.zip)): A plain-English summary of a policy with an FAQ and examples employees can understand. For: HR business partner.
- [Exit interview analysis](https://scienceofapps.com/skills/hr/exit-interview-analysis/) ([SKILL.md](https://scienceofapps.com/skills/hr/exit-interview-analysis/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/exit-interview-analysis.zip)): Themes behind attrition with counts, quotes, the teams affected and actions to take. For: HR / people analytics.
- [Engagement survey builder](https://scienceofapps.com/skills/hr/employee-survey-builder/) ([SKILL.md](https://scienceofapps.com/skills/hr/employee-survey-builder/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/employee-survey-builder.zip)): A short, neutral engagement survey with scales, open questions and an analysis plan. For: HR / people operations.
- [Training needs analysis](https://scienceofapps.com/skills/hr/training-needs-analysis/) ([SKILL.md](https://scienceofapps.com/skills/hr/training-needs-analysis/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/training-needs-analysis.zip)): A skills gap analysis by role with priority training and how to measure impact. For: L&D specialist.
- [People announcement writer](https://scienceofapps.com/skills/hr/hr-announcement-writer/) ([SKILL.md](https://scienceofapps.com/skills/hr/hr-announcement-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/hr-announcement-writer.zip)): A clear announcement that says what's changing, why, when, what it means for each group and where to ask. For: HR / internal comms.
- [Pay band builder](https://scienceofapps.com/skills/hr/compensation-benchmark-prep/) ([SKILL.md](https://scienceofapps.com/skills/hr/compensation-benchmark-prep/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/compensation-benchmark-prep.zip)): Pay bands by level with min, midpoint and max, built from the market data you provide. For: HR / compensation.

## Design & UX (12 skills)

These 12 skills give designers a second pair of eyes grounded in UX research: heuristic reviews of a screen description, microcopy and error messages, accessibility checks against WCAG 2.2, usability test scripts, research-backed personas and structured critiques. Each one names the principle behind every suggestion. [Category page](https://scienceofapps.com/skills/design/)

- [Heuristic UX review](https://scienceofapps.com/skills/design/heuristic-ux-review/) ([SKILL.md](https://scienceofapps.com/skills/design/heuristic-ux-review/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/heuristic-ux-review.zip)): Usability issues mapped to Nielsen's 10 heuristics and the laws of UX, rated by severity, with fixes. For: Product / UX designer.
- [Microcopy writer](https://scienceofapps.com/skills/design/microcopy-writer/) ([SKILL.md](https://scienceofapps.com/skills/design/microcopy-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/microcopy-writer.zip)): Clear microcopy for every state of your component: labels, helper text, errors, empty and success states. For: UX writer / designer.
- [Accessibility checker](https://scienceofapps.com/skills/design/accessibility-checker/) ([SKILL.md](https://scienceofapps.com/skills/design/accessibility-checker/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/accessibility-checker.zip)): WCAG 2.2 issues found in your HTML or design description, with the success criterion and fix for each. For: Designer / front-end developer.
- [Usability test script](https://scienceofapps.com/skills/design/usability-test-script/) ([SKILL.md](https://scienceofapps.com/skills/design/usability-test-script/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/usability-test-script.zip)): A moderated test script with screener, warm-up, realistic tasks, neutral probes and a debrief. For: UX researcher / designer.
- [Design critique partner](https://scienceofapps.com/skills/design/design-critique/) ([SKILL.md](https://scienceofapps.com/skills/design/design-critique/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/design-critique.zip)): A structured critique against the design's goal: what works, what doesn't and why, with options. For: Product designer.
- [Research-based persona](https://scienceofapps.com/skills/design/persona-builder/) ([SKILL.md](https://scienceofapps.com/skills/design/persona-builder/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/persona-builder.zip)): Behaviour-based personas with goals, context, frustrations and quotes drawn from your research. For: UX researcher / designer.
- [User flow mapper](https://scienceofapps.com/skills/design/user-flow-mapper/) ([SKILL.md](https://scienceofapps.com/skills/design/user-flow-mapper/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/user-flow-mapper.zip)): A complete user flow with happy path, decisions, error states and a Mermaid diagram. For: Product designer.
- [Design token generator](https://scienceofapps.com/skills/design/design-system-tokens/) ([SKILL.md](https://scienceofapps.com/skills/design/design-system-tokens/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/design-system-tokens.zip)): A token set for colour, type, spacing and radius in JSON and CSS variables, with light and dark values. For: Design systems designer / front-end.
- [UX research plan](https://scienceofapps.com/skills/design/ux-research-plan/) ([SKILL.md](https://scienceofapps.com/skills/design/ux-research-plan/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/ux-research-plan.zip)): A research plan: decision to inform, questions, method, participants, timeline and outputs. For: UX researcher / PM.
- [Image prompt writer](https://scienceofapps.com/skills/design/image-prompt-writer/) ([SKILL.md](https://scienceofapps.com/skills/design/image-prompt-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/image-prompt-writer.zip)): Detailed prompts for Midjourney, DALL·E, Imagen or Firefly with style, composition and negative prompts. For: Designer / marketer.
- [Design handoff notes](https://scienceofapps.com/skills/design/figma-handoff-notes/) ([SKILL.md](https://scienceofapps.com/skills/design/figma-handoff-notes/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/figma-handoff-notes.zip)): Handoff notes covering states, interactions, responsive behaviour, content rules and accessibility. For: Product designer.
- [UX copy localizer](https://scienceofapps.com/skills/design/ux-copy-localizer/) ([SKILL.md](https://scienceofapps.com/skills/design/ux-copy-localizer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/ux-copy-localizer.zip)): Localised UI strings that sound natural, fit length limits and keep placeholders intact. For: UX writer / product designer.

## Founders & small business (12 skills)

These 12 skills act as the team a founder doesn't have yet: an idea stress-test, a lean canvas, a pitch deck outline, monthly investor updates, a competitor teardown, pricing tiers and a one-page business plan. Each asks the questions a good advisor would, then gives you something to send or test this week. [Category page](https://scienceofapps.com/skills/founders/)

- [Idea stress test](https://scienceofapps.com/skills/founders/idea-stress-test/) ([SKILL.md](https://scienceofapps.com/skills/founders/idea-stress-test/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/idea-stress-test.zip)): Your idea's riskiest assumptions, ranked, with a one-week test for each. For: Startup founder.
- [Lean canvas builder](https://scienceofapps.com/skills/founders/lean-canvas/) ([SKILL.md](https://scienceofapps.com/skills/founders/lean-canvas/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/lean-canvas.zip)): A filled Lean Canvas with the weakest blocks highlighted and what to learn next. For: Startup founder.
- [Pitch deck outline](https://scienceofapps.com/skills/founders/pitch-deck-outline/) ([SKILL.md](https://scienceofapps.com/skills/founders/pitch-deck-outline/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/pitch-deck-outline.zip)): A 12-slide outline with the headline, content and evidence for each slide. For: Startup founder.
- [Monthly investor update](https://scienceofapps.com/skills/founders/investor-update/) ([SKILL.md](https://scienceofapps.com/skills/founders/investor-update/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/investor-update.zip)): A monthly update: headline, metrics, wins, misses, asks and what's next. For: Startup founder.
- [Competitor teardown](https://scienceofapps.com/skills/founders/competitor-teardown/) ([SKILL.md](https://scienceofapps.com/skills/founders/competitor-teardown/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/competitor-teardown.zip)): A teardown of a competitor's positioning, product, pricing, acquisition and weaknesses. For: Founder / product lead.
- [Pricing page writer](https://scienceofapps.com/skills/founders/pricing-page-copy/) ([SKILL.md](https://scienceofapps.com/skills/founders/pricing-page-copy/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/pricing-page-copy.zip)): Pricing page copy: tier names, who each is for, prices, key differences, FAQ and CTA. For: Founder / marketer.
- [One-page business plan](https://scienceofapps.com/skills/founders/one-page-business-plan/) ([SKILL.md](https://scienceofapps.com/skills/founders/one-page-business-plan/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/one-page-business-plan.zip)): A one-page business plan with the offer, customers, numbers, plan and risks. For: Small business owner.
- [GST invoice drafter](https://scienceofapps.com/skills/founders/gst-invoice-generator/) ([SKILL.md](https://scienceofapps.com/skills/founders/gst-invoice-generator/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/gst-invoice-generator.zip)): A GST invoice layout with all required fields and correctly split CGST/SGST or IGST. For: Freelancer / small business (India).
- [Co-founder alignment](https://scienceofapps.com/skills/founders/cofounder-agreement-checklist/) ([SKILL.md](https://scienceofapps.com/skills/founders/cofounder-agreement-checklist/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/cofounder-agreement-checklist.zip)): A structured list of decisions co-founders must agree on, with questions and options for each. For: Startup founder.
- [Customer interview guide](https://scienceofapps.com/skills/founders/customer-interview-guide/) ([SKILL.md](https://scienceofapps.com/skills/founders/customer-interview-guide/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/customer-interview-guide.zip)): An interview guide based on 'The Mom Test': questions about past behaviour, not opinions about your idea. For: Founder.
- [Grant and scheme applicant](https://scienceofapps.com/skills/founders/grant-application-writer/) ([SKILL.md](https://scienceofapps.com/skills/founders/grant-application-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/grant-application-writer.zip)): Draft answers for each question in the application, within word limits, with evidence to attach. For: Startup founder / nonprofit.
- [Launch week plan](https://scienceofapps.com/skills/founders/launch-week-plan/) ([SKILL.md](https://scienceofapps.com/skills/founders/launch-week-plan/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/launch-week-plan.zip)): A seven-day launch plan with posts, channels, outreach lists and what to measure each day. For: Founder / indie hacker.

## Legal & compliance (10 skills)

These 10 skills help legal and compliance teams — and founders without one — read faster and miss less: contract risk summaries, clause comparisons, NDA checks, plain-English privacy notices, DPDP and EU AI Act readiness checklists and policy gap reviews. They prepare work for a lawyer; they do not replace one. [Category page](https://scienceofapps.com/skills/legal/)

- [Contract risk summary](https://scienceofapps.com/skills/legal/contract-risk-summary/) ([SKILL.md](https://scienceofapps.com/skills/legal/contract-risk-summary/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/contract-risk-summary.zip)): A one-page summary of key terms and a red/amber/green list of risky clauses with suggested edits. For: In-house counsel / founder.
- [Clause comparison](https://scienceofapps.com/skills/legal/clause-comparison/) ([SKILL.md](https://scienceofapps.com/skills/legal/clause-comparison/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/clause-comparison.zip)): A side-by-side table of each changed clause, what changed, why it matters and a response. For: Contract manager / lawyer.
- [NDA checker](https://scienceofapps.com/skills/legal/nda-checker/) ([SKILL.md](https://scienceofapps.com/skills/legal/nda-checker/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/nda-checker.zip)): A quick check of an NDA against a standard checklist, with issues and suggested edits. For: Founder / business development.
- [Privacy notice drafter](https://scienceofapps.com/skills/legal/privacy-notice-drafter/) ([SKILL.md](https://scienceofapps.com/skills/legal/privacy-notice-drafter/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/privacy-notice-drafter.zip)): A plain-English privacy notice draft based on your real data practices, with gaps flagged. For: Founder / privacy officer.
- [DPDP Act readiness check](https://scienceofapps.com/skills/legal/dpdp-readiness-checklist/) ([SKILL.md](https://scienceofapps.com/skills/legal/dpdp-readiness-checklist/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/dpdp-readiness-checklist.zip)): A gap assessment against the main DPDP Act and Rules duties, with priorities and owners. For: Compliance / privacy officer (India).
- [EU AI Act risk check](https://scienceofapps.com/skills/legal/eu-ai-act-classifier/) ([SKILL.md](https://scienceofapps.com/skills/legal/eu-ai-act-classifier/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/eu-ai-act-classifier.zip)): A first-pass classification of your AI system under the EU AI Act with the duties that follow and dates. For: Compliance / AI product lead.
- [Terms explainer](https://scienceofapps.com/skills/legal/terms-of-service-explainer/) ([SKILL.md](https://scienceofapps.com/skills/legal/terms-of-service-explainer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/terms-of-service-explainer.zip)): A plain-English summary of the terms with the five things you should know before agreeing. For: Consumer or small business owner.
- [Policy gap review](https://scienceofapps.com/skills/legal/policy-gap-review/) ([SKILL.md](https://scienceofapps.com/skills/legal/policy-gap-review/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/policy-gap-review.zip)): A review of your policy against a named standard or law, with gaps, outdated sections and fixes. For: Compliance officer.
- [Formal letter drafter](https://scienceofapps.com/skills/legal/legal-letter-drafter/) ([SKILL.md](https://scienceofapps.com/skills/legal/legal-letter-drafter/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/legal-letter-drafter.zip)): A clear, formal letter with facts, the demand, the deadline and the next step, ready for review. For: Business owner / legal assistant.
- [Consumer complaint writer](https://scienceofapps.com/skills/legal/consumer-complaint-writer/) ([SKILL.md](https://scienceofapps.com/skills/legal/consumer-complaint-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/consumer-complaint-writer.zip)): A complaint for the company's grievance officer and a draft for the National Consumer Helpline or e-Daakhil. For: Consumer (India).

## Education & training (10 skills)

These 10 skills save teachers and corporate trainers hours of preparation: lesson plans tied to a learning objective, rubrics, quizzes with answer keys and explanations, worksheets at three levels, kind and specific feedback, and course outlines. Each output is ready to print or upload, and easy to check. [Category page](https://scienceofapps.com/skills/education/)

- [Lesson plan builder](https://scienceofapps.com/skills/education/lesson-plan-builder/) ([SKILL.md](https://scienceofapps.com/skills/education/lesson-plan-builder/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/lesson-plan-builder.zip)): A timed lesson plan with objective, warm-up, teaching, practice, check for understanding and homework. For: Teacher / trainer.
- [Rubric builder](https://scienceofapps.com/skills/education/rubric-builder/) ([SKILL.md](https://scienceofapps.com/skills/education/rubric-builder/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/rubric-builder.zip)): An analytic rubric with criteria, four performance levels and clear descriptors. For: Teacher / instructional designer.
- [Quiz generator](https://scienceofapps.com/skills/education/quiz-generator/) ([SKILL.md](https://scienceofapps.com/skills/education/quiz-generator/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/quiz-generator.zip)): A quiz with answer key, explanations and distractors based on common mistakes. For: Teacher / trainer.
- [Differentiated worksheet](https://scienceofapps.com/skills/education/differentiated-worksheet/) ([SKILL.md](https://scienceofapps.com/skills/education/differentiated-worksheet/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/differentiated-worksheet.zip)): The same worksheet at three levels — support, core and challenge — with an answer key. For: Teacher.
- [Student feedback writer](https://scienceofapps.com/skills/education/student-feedback-writer/) ([SKILL.md](https://scienceofapps.com/skills/education/student-feedback-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/student-feedback-writer.zip)): Specific feedback for a piece of work: what's working, one thing to improve and a next step. For: Teacher / tutor.
- [Course outline designer](https://scienceofapps.com/skills/education/course-outline-designer/) ([SKILL.md](https://scienceofapps.com/skills/education/course-outline-designer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/course-outline-designer.zip)): A course outline with outcomes, modules, activities, assessments and time per module. For: Instructional designer / corporate trainer.
- [Explain at three levels](https://scienceofapps.com/skills/education/concept-explainer-levels/) ([SKILL.md](https://scienceofapps.com/skills/education/concept-explainer-levels/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/concept-explainer-levels.zip)): Any concept explained for a 10-year-old, a student and an expert, with an analogy and a check question. For: Teacher / learner.
- [Exam study plan](https://scienceofapps.com/skills/education/study-plan-generator/) ([SKILL.md](https://scienceofapps.com/skills/education/study-plan-generator/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/study-plan-generator.zip)): A day-by-day study plan with spaced revision, practice tests and buffer days. For: Student.
- [Parent message writer](https://scienceofapps.com/skills/education/parent-communication/) ([SKILL.md](https://scienceofapps.com/skills/education/parent-communication/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/parent-communication.zip)): A clear, kind message to parents with the facts, what the school is doing and how they can help. For: Teacher / school administrator.
- [Workshop designer](https://scienceofapps.com/skills/education/training-session-designer/) ([SKILL.md](https://scienceofapps.com/skills/education/training-session-designer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/training-session-designer.zip)): A workshop agenda with activities, timings, facilitator notes and a follow-up to make it stick. For: Corporate trainer / facilitator.

## Job seekers & careers (10 skills)

These 10 skills help you get hired without making anything up: tailor a resume to a job description, find missing keywords, write a cover letter that sounds like you, rehearse STAR answers, practise a mock interview, negotiate an offer and rewrite your LinkedIn profile. Every claim stays true to the experience you give it. [Category page](https://scienceofapps.com/skills/careers/)

- [Resume tailor](https://scienceofapps.com/skills/careers/resume-tailor/) ([SKILL.md](https://scienceofapps.com/skills/careers/resume-tailor/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/resume-tailor.zip)): Your resume rewritten for one job: matched keywords, reordered bullets and quantified impact — all true. For: Job seeker.
- [ATS keyword check](https://scienceofapps.com/skills/careers/ats-keyword-check/) ([SKILL.md](https://scienceofapps.com/skills/careers/ats-keyword-check/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/ats-keyword-check.zip)): A match score, missing keywords by priority and formatting issues that break ATS parsing. For: Job seeker.
- [Cover letter writer](https://scienceofapps.com/skills/careers/cover-letter-writer/) ([SKILL.md](https://scienceofapps.com/skills/careers/cover-letter-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/cover-letter-writer.zip)): A 250-word cover letter that opens with why this company, proves fit with two stories and sounds like you. For: Job seeker.
- [STAR answer builder](https://scienceofapps.com/skills/careers/star-answer-builder/) ([SKILL.md](https://scienceofapps.com/skills/careers/star-answer-builder/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/star-answer-builder.zip)): Your experience turned into crisp STAR answers (under two minutes each) for likely questions. For: Job seeker / interview candidate.
- [Mock interviewer](https://scienceofapps.com/skills/careers/mock-interviewer/) ([SKILL.md](https://scienceofapps.com/skills/careers/mock-interviewer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/mock-interviewer.zip)): A live mock interview, one question at a time, with feedback and a score after each answer. For: Interview candidate.
- [Salary negotiation script](https://scienceofapps.com/skills/careers/salary-negotiation-script/) ([SKILL.md](https://scienceofapps.com/skills/careers/salary-negotiation-script/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/salary-negotiation-script.zip)): A negotiation plan with your target and walk-away numbers, a script and replies to common pushback. For: Job seeker with an offer.
- [LinkedIn profile rewrite](https://scienceofapps.com/skills/careers/linkedin-profile-rewrite/) ([SKILL.md](https://scienceofapps.com/skills/careers/linkedin-profile-rewrite/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/linkedin-profile-rewrite.zip)): A rewritten headline, About section and experience bullets built around your target role. For: Job seeker / professional.
- [Career switch planner](https://scienceofapps.com/skills/careers/career-switch-planner/) ([SKILL.md](https://scienceofapps.com/skills/careers/career-switch-planner/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/career-switch-planner.zip)): A transferable-skills map, the gaps to close and a 90-day plan with portfolio projects. For: Career switcher.
- [Job offer comparator](https://scienceofapps.com/skills/careers/job-offer-comparator/) ([SKILL.md](https://scienceofapps.com/skills/careers/job-offer-comparator/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/job-offer-comparator.zip)): A side-by-side comparison of your offers on total pay and what matters to you, with a weighted score. For: Job seeker with offers.
- [Networking message writer](https://scienceofapps.com/skills/careers/networking-message-writer/) ([SKILL.md](https://scienceofapps.com/skills/careers/networking-message-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/networking-message-writer.zip)): A short, specific message asking for advice or a referral that's easy to say yes to. For: Job seeker / student.

## Healthcare administration (8 skills)

These 8 skills cover the paperwork side of healthcare — appeal letters for denied claims, prior authorisation checklists, plain-language patient letters, appointment reminders, staff rosters and front-desk scripts. They are for administrators and billing teams, never for clinical decisions, and are designed to work without patient-identifying data. [Category page](https://scienceofapps.com/skills/healthcare-admin/)

- [Claim denial appeal](https://scienceofapps.com/skills/healthcare-admin/claim-denial-appeal/) ([SKILL.md](https://scienceofapps.com/skills/healthcare-admin/claim-denial-appeal/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/claim-denial-appeal.zip)): An appeal letter that addresses the denial reason, cites the policy and lists the evidence to attach. For: Medical billing / reimbursement specialist.
- [Prior authorisation checklist](https://scienceofapps.com/skills/healthcare-admin/prior-auth-checklist/) ([SKILL.md](https://scienceofapps.com/skills/healthcare-admin/prior-auth-checklist/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/prior-auth-checklist.zip)): A checklist of everything the insurer's criteria require, with gaps marked, before you submit. For: Practice coordinator.
- [Plain-language patient letter](https://scienceofapps.com/skills/healthcare-admin/plain-language-patient-letter/) ([SKILL.md](https://scienceofapps.com/skills/healthcare-admin/plain-language-patient-letter/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/plain-language-patient-letter.zip)): A clear patient letter at about a Year 6 reading level, with what to do, when and what to bring. For: Patient services / practice manager.
- [Appointment reminder set](https://scienceofapps.com/skills/healthcare-admin/appointment-reminder-scripts/) ([SKILL.md](https://scienceofapps.com/skills/healthcare-admin/appointment-reminder-scripts/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/appointment-reminder-scripts.zip)): Reminder messages for SMS, WhatsApp, email and phone at each stage, with confirm and reschedule options. For: Front-desk coordinator.
- [Clinic roster planner](https://scienceofapps.com/skills/healthcare-admin/staff-roster-planner/) ([SKILL.md](https://scienceofapps.com/skills/healthcare-admin/staff-roster-planner/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/staff-roster-planner.zip)): A weekly roster meeting coverage and skill mix, with rule checks and unfilled gaps flagged. For: Practice / nursing administrator.
- [Billing code checklist](https://scienceofapps.com/skills/healthcare-admin/medical-coding-lookup-helper/) ([SKILL.md](https://scienceofapps.com/skills/healthcare-admin/medical-coding-lookup-helper/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/medical-coding-lookup-helper.zip)): A documentation checklist for the codes you're considering, with what the note must show. For: Medical coder / billing specialist.
- [Front-desk scripts](https://scienceofapps.com/skills/healthcare-admin/front-desk-script/) ([SKILL.md](https://scienceofapps.com/skills/healthcare-admin/front-desk-script/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/front-desk-script.zip)): Scripts for common front-desk situations: delays, billing questions, insurance, complaints. For: Front-desk / reception.
- [Clinic admin SOP](https://scienceofapps.com/skills/healthcare-admin/healthcare-sop-writer/) ([SKILL.md](https://scienceofapps.com/skills/healthcare-admin/healthcare-sop-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/healthcare-sop-writer.zip)): A clear SOP for an admin process with steps, roles, privacy checks and exceptions. For: Practice manager / hospital administrator.

## Writing & communications (8 skills)

These 8 skills help anyone who writes for a living, or for their job, say more with less: press releases in the inverted pyramid, holding statements for a crisis, tone rewrites, executive summaries, newsletters, speeches and a fact-check for AI-written drafts. Each returns a clean draft and the choices it made. [Category page](https://scienceofapps.com/skills/communications/)

- [Executive summary](https://scienceofapps.com/skills/communications/executive-summary/) ([SKILL.md](https://scienceofapps.com/skills/communications/executive-summary/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/executive-summary.zip)): A one-page executive summary: the bottom line first, three supporting points and the decision needed. For: Manager / analyst / consultant.
- [Press release writer](https://scienceofapps.com/skills/communications/press-release-writer/) ([SKILL.md](https://scienceofapps.com/skills/communications/press-release-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/press-release-writer.zip)): A press release in inverted-pyramid style with a news headline, dateline, quotes and boilerplate. For: PR / communications manager.
- [Crisis holding statement](https://scienceofapps.com/skills/communications/crisis-holding-statement/) ([SKILL.md](https://scienceofapps.com/skills/communications/crisis-holding-statement/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/crisis-holding-statement.zip)): A short holding statement that acknowledges, states what's known, what you're doing and when you'll update. For: Communications lead.
- [Tone rewriter](https://scienceofapps.com/skills/communications/tone-rewriter/) ([SKILL.md](https://scienceofapps.com/skills/communications/tone-rewriter/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/tone-rewriter.zip)): Your text rewritten in the tone you need, in three versions, with the meaning unchanged. For: Professional who writes at work.
- [AI draft fact-checker](https://scienceofapps.com/skills/communications/ai-draft-fact-checker/) ([SKILL.md](https://scienceofapps.com/skills/communications/ai-draft-fact-checker/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/ai-draft-fact-checker.zip)): Every checkable claim in your draft listed, rated by risk, with what to verify and where. For: Writer or editor publishing AI-assisted work.
- [Speech and talk writer](https://scienceofapps.com/skills/communications/speech-writer/) ([SKILL.md](https://scienceofapps.com/skills/communications/speech-writer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/speech-writer.zip)): A speech written for the ear: an opening story, three points, a memorable close, with timing marks. For: Leader / speaker.
- [Email thread summarizer](https://scienceofapps.com/skills/communications/email-thread-summarizer/) ([SKILL.md](https://scienceofapps.com/skills/communications/email-thread-summarizer/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/email-thread-summarizer.zip)): A summary of the thread: current status, decisions, open questions, who owes what, and a reply draft. For: Manager / executive assistant.
- [Line editor](https://scienceofapps.com/skills/communications/blog-post-editor/) ([SKILL.md](https://scienceofapps.com/skills/communications/blog-post-editor/SKILL.md), [ZIP for Claude](https://scienceofapps.com/skills/zip/blog-post-editor.zip)): A tightened draft that keeps your voice, with every edit explained and a readability check. For: Writer / content editor.

## Forecast: skills in demand next

- **Briefing and delegating to AI agents** (6 months): Assistants are moving from answering to doing: automation is already about three-quarters of AI API use, and leaders expect agents on their teams within 18 months. The bottleneck becomes the human brief — a clear goal, scope, acceptance tests and limits. Library skills: AI coding agent brief, AI feature spec.
- **Checking AI output before it ships** (6 months): Most companies use AI but few have scaled it, and Gartner expects over 40% of agentic projects to be cancelled for unclear value and weak risk controls. The skill that separates useful AI work from embarrassing AI work is verification: fact-checking drafts and building evaluation sets. Library skills: AI draft fact-checker, AI feature spec, Pull request reviewer.
- **Writing for AI answer engines (GEO / AEO)** (6 months): Seeking information is one of the three biggest uses of ChatGPT, so a growing share of research starts in an AI answer rather than a list of links. Pages that state answers plainly, with specific and attributable facts, are the ones assistants can quote. Library skills: AI search (GEO) rewriter, SEO content brief.
- **Everyday security against AI-made scams** (6 months): Networks and cybersecurity is the second fastest-growing skill to 2030 and information security analysts are among the fastest-growing jobs. Generative AI makes phishing fluent and personal, so every employee needs a quick, reliable way to check a message. Library skills: Phishing email checker, Security code review.
- **DPDP privacy compliance (India)** (6 months): The DPDP Rules' main duties — notices, consent, children's data and breach notification — apply from May 2027. Most Indian startups have no privacy team, so readiness checks and plain-language notices will be in demand through the first half of 2027. Library skills: DPDP Act readiness check, Privacy notice drafter.
- **EU AI Act and AI governance** (1 2 years): High-risk duties under the EU AI Act now start in December 2027 for stand-alone systems such as hiring and credit tools, and August 2028 for AI inside regulated products. Any team selling AI into Europe will need to classify its systems and document oversight. Library skills: EU AI Act risk check, AI feature spec.
- **Data analysis with AI as the default** (1 2 years): Nearly half of data and analytics job postings already mention AI, and data scientists are projected to grow 34% by 2034. Expect plain-English querying and AI-assisted analysis to become a baseline skill for every analyst and manager, not a specialism. Library skills: SQL from plain English, A/B test reader, KPI drop investigator.
- **Healthcare revenue-cycle paperwork** (1 2 years): Healthcare reimbursement specialist is LinkedIn's sixth fastest-growing US job and healthcare dominates long-run job growth, while administrative work is where AI applies most. Appeals, prior authorisation and patient letters are high-volume, rules-based writing. Library skills: Claim denial appeal, Prior authorisation checklist.
- **Redesigning team workflows around agents** (1 2 years): Leaders expect to use agents to expand capacity, but agent use is scaled in no more than 10% of companies in any single function. The next wave of demand is for people who can map a process and decide which steps an agent should own and where a human signs off. Library skills: Process mapper, SOP writer.
- **Managing fleets of agents (the 'agent boss')** (beyond): Leaders expect teams to be training and managing AI agents as part of their jobs within five years. That means setting goals for agents, reviewing their work in bulk and handling exceptions — a management skill, not a prompting one. Not in the library yet.
- **Judgement, creativity and resilience** (beyond): Alongside AI and data, employers rank creative thinking and resilience, flexibility and agility among the fastest-growing skills to 2030. As AI drafts more, the human contribution shifts to choosing the problem, critiquing the work and owning the decision. Library skills: Design critique partner, Idea stress test, Architecture decision record.
- **AI-assisted teaching and tutoring** (beyond): Education is already the second-largest use of Claude and grew from 9% to 15% of conversations in 2025. Over several years, expect lesson design, assessment and personalised practice to be built with AI by default — making teaching skills that direct AI well more valuable. Library skills: Lesson plan builder, Explain at three levels, Exam study plan.

## FAQ

### What is an AI skill?

An AI skill is a ready-made set of instructions that turns a general AI assistant such as ChatGPT, Claude or Gemini into a specialist for one job — for example writing a cold email, reviewing a pull request or checking an invoice. You paste it in once, send your input, and the assistant follows the same steps and format every time.

### How do I install an AI skill in ChatGPT, Claude or Gemini?

Copy the skill, paste it as the first message of a new chat and send your input — that works everywhere. To keep a skill, paste it into a ChatGPT Project or custom GPT's instructions, a Claude Project's instructions or a Gemini Gem. In Claude you can also upload the SKILL.md file as a Claude Skill.

### Are these AI skills free?

Yes. All 200 skills are free to copy, use and adapt, with no sign-up. They work in the free tiers of ChatGPT, Claude, Gemini and Copilot, though longer inputs such as contracts or large data samples work better in paid plans with bigger context windows.

### What is the difference between a prompt and a skill?

A prompt is a one-off request. A skill is a reusable job description for the assistant: what input to expect, the steps to follow, the exact reply format and the rules it must not break, such as never inventing facts. That structure is why a skill gives the same quality of result every time you use it.

### Is it safe to paste work data into these skills?

Treat any AI tool as an outside service. Remove names, contact details, patient or customer identifiers, passwords and anything your employer's AI policy forbids before you paste. Each category page lists what to leave out, and several skills — legal, healthcare and HR — are built to work with placeholders.

### How were the skill categories chosen?

Categories are ordered by demand: what people use AI assistants for most (Anthropic Economic Index, the NBER study of ChatGPT use, Microsoft Research), which jobs are growing fastest (WEF Future of Jobs 2025, US BLS projections, LinkedIn Jobs on the Rise 2026) and where employers ask for AI skills (Indeed Hiring Lab). Each category page names its sources.

### What is a SKILL.md file?

SKILL.md is the file format of the open Agent Skills specification: a short header with the skill's name and description, followed by its instructions. Claude Skills and a growing number of AI agents and coding tools load skills in this format. Every skill here has a SKILL.md you can download or read as plain text.

## Sources for the categories

- [Anthropic Economic Index — Economic primitives report (January 2026)](https://www.anthropic.com/research/anthropic-economic-index-january-2026-report): Computer and mathematical tasks were about a third (34%) of Claude.ai conversations and nearly half (46%) of API traffic in November 2025; education and instruction was second at 15%; office and administrative support was 13% of API use. The single most common task was fixing software errors (6%).
- [Chatterji et al. — How People Use ChatGPT (NBER Working Paper 34255, September 2025)](https://www.nber.org/papers/w34255): Practical guidance, seeking information and writing make up nearly 80% of ChatGPT conversations, and writing is the most common use at work, most of it editing and improving text people already have.
- [World Economic Forum — Future of Jobs Report 2025](https://www.weforum.org/publications/the-future-of-jobs-report-2025/): Employers expect big data specialists, fintech engineers and AI and machine learning specialists to be the fastest-growing jobs to 2030, with software developers, security management specialists and UI/UX designers also in the top ten. AI and big data, networks and cybersecurity and technological literacy are the fastest-growing skills.
- [US Bureau of Labor Statistics — Employment Projections 2024–34](https://www.bls.gov/news.release/ecopro.nr0.htm): Data scientists (+34%) and information security analysts (+29%) are among the fastest-growing occupations to 2034, against 3% growth for all jobs; healthcare roles such as nurse practitioners are on the same list.
- [LinkedIn Jobs on the Rise 2026, as reported by Becker's Hospital Review (January 2026)](https://www.beckershospitalreview.com/workforce/25-fastest-growing-jobs-in-the-us-linkedin): AI engineer is the fastest-growing US job title, with AI consultant/strategist second; healthcare reimbursement specialist is sixth. Built from millions of jobs LinkedIn members started between January 2023 and July 2025.
- [Tomlinson et al., Microsoft Research — Working with AI: Measuring the Applicability of Generative AI to Occupations (2025)](https://arxiv.org/abs/2507.07935): Across 200,000 Bing Copilot conversations, AI applicability is highest for computer and mathematical work, office and administrative support, and sales and other jobs built on providing and communicating information; the authors stress this is not a forecast of job loss.
- [Indeed Hiring Lab — January 2026 labor market update: jobs mentioning AI are growing](https://hiringlab.indeed.com/2026/01/22/january-labor-market-update-jobs-mentioning-ai-are-growing-amid-broader-hiring-weakness/): 4.2% of US job postings mentioned AI in December 2025, a record; nearly 45% of data and analytics postings did, against about 15% in marketing and 9% in HR.
- [McKinsey — The state of AI in 2025: Agents, innovation and transformation](https://www.mckinsey.com/capabilities/quantumblack/our-insights/the-state-of-ai): 88% of organisations use AI in at least one business function (survey of 1,993 people, mid-2025), but most have not scaled it; AI agent use is most often reported in IT and knowledge management, and no more than 10% scale agents in any one function.
- [Microsoft — 2025 Work Trend Index: The year the Frontier Firm is born](https://www.microsoft.com/en-us/worklab/work-trend-index/2025-the-year-the-frontier-firm-is-born): 82% of leaders expect to use AI agents to expand workforce capacity in the next 12–18 months, and expect teams to be training and managing agents within five years (the 'agent boss').
- [Gartner — Over 40% of agentic AI projects will be canceled by end of 2027 (June 2025)](https://www.gartner.com/en/newsroom/press-releases/2025-06-25-gartner-predicts-over-40-percent-of-agentic-ai-projects-will-be-canceled-by-end-of-2027): Rising costs, unclear business value and weak risk controls will end over 40% of agentic AI projects by the end of 2027.
- [Gibson Dunn — EU AI Act Omnibus agreement: postponed high-risk deadlines (May 2026)](https://www.gibsondunn.com/eu-ai-act-omnibus-agreement-postponed-high-risk-deadlines-and-other-key-changes/): The provisional Digital Omnibus deal moves EU AI Act high-risk obligations to 2 December 2027 (stand-alone systems) and 2 August 2028 (AI in regulated products); transparency duties for AI-generated content stay largely on schedule.
- [Government of India (PIB) — Digital Personal Data Protection Rules, 2025](https://static.pib.gov.in/WriteReadData/specificdocs/documents/2025/nov/doc20251117695301.pdf): The DPDP Rules were notified in November 2025 with phased commencement: the Data Protection Board at once, consent managers after 12 months, and notice, breach and children's-data duties after 18 months (May 2027).
- [Agent Skills — open specification (agentskills.io, December 2025)](https://agentskills.io): A skill is a folder with a SKILL.md file (name and description metadata, then instructions) that an AI agent loads when relevant; Anthropic published it as an open standard and other AI tools have adopted the same format.