Skills
100,928 packaged capabilities and playbooks for agents. Install any of them with one command.
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Master ACX-compliant audiobook production using Audible's technical standards and Richard Mayer's multimedia learning principles to create engaging, professional audio. Use when producing an audiobook for Audible/ACX distribution; creating audio versions of courses or written content; setting up a narration workflow for long-form content; ensuring audio meets professional distribution standards; or self-producing an audiobook as an author.
Transforms analysis, data, and complex information into clear, persuasive narratives tailored to specific audiences—executives, customers, investors, or non-technical stakeholders. Provides story structures (Hero's Journey, Problem-Solution-Benefit, Situation-Complication-Resolution) and audience adaptation techniques. Use when presenting findings, explaining technical concepts to non-technical audiences, writing announcements, or when users mention “write this for,” “explain to,” “present findings,” “make this compelling,” or “audience is.”
When the user wants to create competitor comparison or alternative pages for SEO and sales enablement. Also use when the user mentions 'alternative page,' 'vs page,' 'competitor comparison,' 'comparison page,' '[Product] vs [Product],' '[Product] alternative,' or 'competitive landing pages.' Covers four formats: singular alternative, plural alternatives, you vs competitor, and competitor vs competitor. Emphasizes deep research, modular content architecture, and varied section types beyond feature tables.
Multiagent AI system for scientific research assistance that automates research workflows from data analysis to publication. This skill should be used when generating research ideas from datasets, developing research methodologies, executing computational experiments, performing literature searches, or generating publication-ready papers in LaTeX format. Supports end-to-end research pipelines with customizable agent orchestration.
Discovers business domains in a Swift codebase by tracing what users can DO — not by reading folder names or architecture docs. Maps each domain's vertical slice (Types → Config → Repo → Service → Runtime → UI), identifies providers (external SDK bridges), and separates cross-cutting concerns. Produces a domain map that drives all downstream decisions: folder structure, SPM targets, enforcement specs, migration plans. Use this skill whenever the user wants to understand their codebase domains, find what's cross-cutting vs domain-specific, restructure a Swift project, figure out where code belongs, or map a product's capabilities to architectural boundaries. Triggers on "what are my domains", "where does this belong", "map this codebase", "what's cross-cutting", "organize this project", "is this a domain or infra", "restructure this", "architecture review", or any request to understand the business domain structure of a Swift codebase.
AI-powered email triage that reads your inbox, classifies each message by importance and urgency (Eisenhower matrix), decides whether you need to reply, and drafts responses in your voice. Use this skill whenever the user asks to triage their email, process their inbox, check what needs a response, draft email replies, prioritize messages, do an inbox review, or anything related to email workflow automation. Also trigger when the user says things like "what emails need my attention", "help me get to inbox zero", "process my unread mail", "draft replies", "what's urgent in my inbox", or "catch me up on email".
Identifies upsell and cross-sell opportunities within existing customer accounts. Analyzes product usage, feature gaps, team growth, industry benchmarks, and competitive pressure to surface revenue expansion plays scored by potential, effort, and likelihood. Generates an expansion-playbook.md with account-by-account opportunities, recommended pitch, timing, and approach.
Frame a new design proposal (RFC-shape) under proposals/ — problem before solution, named beneficiary and observable change, real alternatives, honest drawbacks, and a live open-questions backlog. Read when asked to frame a proposal, write an RFC, propose a design, pitch a change, draft a PRD-style design doc, or open a design proposal for review. Do NOT read to record a decision after it is accepted (use record-a-decision), to write an implementation spec (use write-a-spec), to write a postmortem (use write-a-postmortem), or to review or critique an existing design (use review-a-design)
Behavior-driven UI testing patterns across Vitest Browser Mode, Playwright E2E evidence boundaries, and DOM Testing Library. Use when testing any front-end application, writing UI or end-to-end tests, querying DOM elements, simulating user interactions, or choosing the lightest harness that proves a browser-observable claim. For React-specific patterns, see the react-testing skill.
Building interactive experiences that engage, challenge, and delight playersUse when "game, gamedev, game development, phaser, unity, unreal, godot, gameplay, game loop, sprites, collision, physics, player, level, tilemap, games, gamedev, interactive, gameplay, physics, engines, performance, player-experience" mentioned.
Commit, push, and open a PR with an adaptive, value-first description. Use when the user says "commit and PR", "push and open a PR", "ship this", "create a PR", "open a pull request", "commit push PR", or wants to go from working changes to an open pull request in one step. Also use when the user says "update the PR description", "refresh the PR description", "freshen the PR", or wants to rewrite an existing PR description. Produces PR descriptions that scale in depth with the complexity of the change, avoiding cookie-cutter templates.
Publish files or Obsidian notes as GitHub Gists. Use when user wants to share code/notes publicly, create quick shareable snippets, or publish markdown to GitHub. Triggers include "publish as gist", "create gist", "share on github", "make a gist from this".
Expert blueprint for physics queries using RayCast, ShapeCast, and DirectSpaceState. Covers hit detection, volume overlap, mouse picking, and high-performance server-side intersection queries. Use when implementing projectiles, LOS, terrain grounding, or AI sensors. Keywords raycast, shapecast, direct_space_state, intersect_ray, intersect_shape, PhysicsRayQueryParameters, collision mask, mouse picking.
Hunt JWT cryptographic failures, including alg:none signature stripping and RS256→HS256 key confusion, which let an attacker forge a token for any identity (such as an admin) without knowing a secret. Use when an app authenticates with a JSON Web Token (an `eyJ...` Bearer token in the Authorization header, a cookie, or a login response). This skill handles JWT signature/crypto forgery (alg:none, key confusion, kid/jku header injection); hunt-ato covers JWT as one ATO path, hunt-auth-bypass covers SSO/SAML token trust, and hunt-api-misconfig covers non-crypto JWT handling. Critical when a forged token grants access to another user's data or an admin-only endpoint.
Operates HyperExecute end to end for TestMu AI/LambdaTest cloud test execution: analyzes projects, creates YAML, validates locally, runs CLI jobs, debugs failures, and wires CI. Use when the user mentions HyperExecute, hyperexecute.yaml, HyperExecute CLI, autosplit, matrix execution, LambdaTest grid, cloud test runs, CI test orchestration, or migrating Playwright/Cypress/Selenium/Pytest/WebdriverIO tests to HyperExecute
Search and retrieve Japanese laws and regulations via the official e-Gov Law API V2 (no auth required). Supports law name search, article retrieval, amendment history, and full-text keyword search. Useful for legal research, compliance checks, contract review, and any task involving Japanese statutes (民法/Civil Code, 会社法/Companies Act, 個人情報保護法/APPI, 労働基準法/Labor Standards Act, etc.). 日本の法令をe-Gov法令API V2経由で検索・取得するスキル。法令名検索、条文取得、改正履歴、キーワード検索に対応。Use this skill when researching Japanese laws, regulations, or legal texts.
Compare keyword search popularity and analyze trends with Google Trends, supporting global regions and custom time ranges. Trigger this skill when users mention Google Trends, keyword popularity over time, search interest comparisons, keyword trend analysis, seasonal trend detection, regional search popularity, keyword heatmaps, comparisons of multiple keywords on Google, Google Trends, keyword popularity comparison, search trends, seasonal analysis, regional popularity, or keyword comparison. Trigger it even if users do not explicitly say “Google Trends” as long as their request involves comparing keyword search popularity trends across different time periods or regions.
Build a release APK and a simulator .app file locally for a React Native Expo app using gradlew and xcodebuild. Use when the user wants to produce installable artifacts without EAS (for e2e testing, sharing a build with a teammate, or quick iteration on a real device/simulator). Generates two shell scripts wired up to the user's actual app name, scheme, and bundle identifier.
Build and run a business owner's second brain: one vault, two wings (personal + four-layer business), operated through Claude Code with Obsidian as the viewing deck. Routes every entry to one of four modes: Setup, Capture, Distill, Create-My-Jarvis. Use when the user wants a second brain built or their business knowledge organized into a vault ("set up my second brain"), or asks to continue an installation paused between stations ("continue setup", "next station"), wants to move their business in one room at a time ("capture", "move in a room"), asks for the weekly maintenance ritual ("distill", "tidy my vault", "weekly review"), wants their AI given a persona ("create my jarvis"), or asks for a retrofit an older vault lacks: the safety lock, session memory ("make my sessions searchable"), the maintenance doorbell ("update my maintenance doorbell"), the boot gate ("upgrade my command base"), the end-of-day reconcile ("upgrade my end of day"), the Command Deck ("rebuild my deck", "fix my deck", "add my command deck", "my dashboard is empty", a pasted "# Deck edits" block their command base cannot apply yet), or a companion skill that joined the payload after setup ("install the missing skills", "add the wiki sync"), or the Lesson landing ("upgrade my lessons")
Use this skill whenever the user wants to do anything with PDF files. This includes reading or extracting text/tables from PDFs, combining or merging multiple PDFs into one, splitting PDFs apart, rotating pages, adding watermarks, creating new PDFs, filling PDF forms, encrypting/decrypting PDFs, extracting images, and OCR on scanned PDFs to make them searchable. If the user mentions a .pdf file or asks to produce one, use this skill.
Guard against breaking the @pierre/diffs integration in Plannotator's code review UI. Use this skill whenever modifying DiffViewer.tsx, upgrading the @pierre/diffs package, changing unsafeCSS injection, adding new props to FileDiff, or touching shadow DOM selectors or CSS variables that cross into Pierre's shadow boundary. Also trigger when someone asks "will this break the diff viewer", "is this safe to change", or when reviewing PRs that touch the review-editor package.
Expert project manager orchestrating backlog-curator, work-delegator, workstream-coordinator, and roadmap-strategist sub-skills. Coordinates complex software projects through delegation and strategic oversight. Activates when managing projects, coordinating work, or tracking overall progress.
Generate a premium 6-slide presentation design board as one single composite image. Use this skill whenever the user asks for PPT design concepts, keynote-style slide mockups, a strategy deck visual, an editorial / sports / news / business analysis deck, a TV-friendly slide layout, or any "6-page slide board" / "design these slides" / "PPT 设计稿" / "幻灯片设计图" request. The skill plans the deck slide-by-slide, asks the user to pick light vs dark mode, selects layouts from a named layout library, has the user approve the plan, then generates the composite image and self-reflects on the rendered result. Do NOT trigger for text-only deck outlines (the user wants writing, not visuals), single-slide design (this skill always produces 6), or live editable PPTX/Keynote files (this skill produces a rendered image)
When the user wants to create SEO-driven pages at scale using templates and data. Also use when the user mentions "programmatic SEO," "template pages," "pages at scale," "directory pages," "location pages," "[keyword] + [city] pages," "comparison pages," "integration pages," or "building many pages for SEO." For auditing existing SEO issues, see seo-audit.
Integrates react-native-nitro-google-signin (Nitro Universal Google Sign-In) in React Native and Expo apps. Use when adding Google Sign-In, One Tap sign-in, GoogleOneTapSignIn, Credential Manager, SHA-1 OAuth setup, google-services.json, GoogleService-Info.plist, Expo config plugin, DEVELOPER_ERROR, or webClientId autoDetect.
Integrate and troubleshoot React Native Update OTA for Pushy and Cresc. Use when wiring react-native-update into React Native CLI, Expo prebuild, tvOS/react-native-tvos, HarmonyOS, brownfield, monorepo, or mixed native apps; configuring update.json/appKey, Pushy/Cresc clients, UpdateProvider/useUpdate, native bundle loading, release baseline upload, native cold-start recovery/forceBoot/purgeRestore, bundleHash and error metadata, source maps, checkStrategy/updateStrategy, canary/metaInfo flows, Hermes-base verification, expo-updates conflicts, or OTA failures.
Evaluates which SaaS tools can be replaced with AI agents. Takes a list of current SaaS subscriptions with costs, assesses replacement feasibility, estimates build vs buy economics, identifies Claude+MCP alternatives, and generates a comprehensive replacement plan with priority matrix, ROI analysis, implementation timeline, and risk assessment
Expert sales operations and analytics guidance for revenue teams. Use when designing CRM workflows, building sales dashboards, optimizing pipeline analytics, creating lead routing rules, designing territories, calculating commissions, managing data quality, building forecasting models, or integrating sales tech stack. Covers Salesforce, HubSpot, Outreach, Gong, and RevOps best practices.
Perform language- and framework-specific security best-practice reviews and suggest improvements. Trigger only when the user explicitly requests security best-practice guidance, a security review/report, or secure-by-default coding help. Trigger only for supported languages (python, javascript/typescript, go). Do not trigger for general code review, debugging, or non-security tasks.
Design, implement, and review Supabase solutions — Postgres, Auth, Row Level Security, Storage, Realtime, Edge Functions, and local environments. Use when `supabase/config.toml`, Supabase migrations, or `@supabase/*` clients are involved; do not use as a substitute for in-depth Postgres analysis of schemas, indexes, or plans — combine with `specsfy-specialist-postgres` for that.
Transcription factor binding, cis-regulatory elements (cCREs), chromatin accessibility, and regulatory annotation using JASPAR (motifs), UniBind, ENCODE (cCREs, ChIP-seq), RegulomeDB (regulatory variant scoring), UCSC, and the Ensembl Regulatory Build (motif instances, evolutionarily constrained elements, TF binding matrices) — plus sequence-based deep-learning prediction of regulatory activity and non-coding variant effects (AlphaGenome, Enformer, Borzoi, ChromBPNet, Evo 2). Use for regulatory element annotation, TF-binding-site prediction, regulatory-region functional impact assessment, and predicting how a non-coding variant or a raw DNA sequence affects expression/chromatin/accessibility. Use this whenever a user asks what regulates a gene, whether a SNP hits a regulatory element, or to predict a non-coding variant's functional effect from sequence.
Inspects PostHog Visual Review (VR) runs that gate PR merges with screenshot regression checks. Use when the user mentions "visual review", "VR", "snapshot diff", "screenshot test", "storybook regression", "playwright snapshot", or "quarantine"; asks why a PR is blocked or what changed visually; wants to triage the VR backlog, decide whether a snapshot diff is real or flaky, quarantine or lift a flaky story, or check whether a story has been changing across runs. Also invoke when a PR has a failing `visual-review` status check, when a PR comment mentions "Visual review", when a PR from a fork fails a screenshot check, or when the user's branch has an open VR run.
New to MCP?
From what the protocol is to installing your first server, these answers cover most first questions.
An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.