Claude Code Skills · page 136

Document decisions, not just implementations. ADRs for architectural choices, inline docs for non-obvious code, and runbooks for operational knowledge.

Graceful degradation and meaningful error messages. Errors are first-class citizens, not afterthoughts. Every error path is designed, not discovered.

Accessible, performant, responsive UI patterns. Component design, state management discipline, and Core Web Vitals compliance.

Trunk-based development with atomic commits, clean history, and meaningful commit messages. Every commit should be deployable.

Transforms imperative instructions into declarative goals with verifiable success criteria. Enables autonomous looping until verified completion.

Detects and mitigates LLM hallucinations in production pipelines. Validates AI-generated facts, code, and decisions before they reach end users or downstream systems.

Converts vague ideas into concrete, testable specifications with acceptance criteria. No implementation begins without a spec.

Build in verifiable increments. Never implement more than can be tested right now. Ship partial working systems over complete broken ones.

Test real system boundaries, not mocks of mocks. Integration tests verify that components work together, not that they work in isolation.

Converts unstructured meeting notes into structured, assigned, time-bounded action items. Never leave a meeting without knowing who does what by when.

Designs and coordinates multi-agent pipelines where specialized agents collaborate to complete complex tasks. Includes communication protocols, failure handling, and state management.

Structured logging, distributed tracing, and alerting for AI systems and traditional services. You can't fix what you can't see.

Measure first, optimize second. Data-driven performance improvements with before/after benchmarks and production validation.

Zero-downtime deployments with pre-flight checks, staged rollouts, and rollback plans. Never ship to production without a verified rollback strategy.

Guards AI agents and LLM-powered applications against prompt injection attacks — both direct and indirect. Validates AI inputs and outputs at every trust boundary.

Patterns for Retrieval-Augmented Generation (RAG) and agent memory systems. Retrieves only relevant context, prevents context bloat, and maintains coherent state across sessions.

Safe, behavior-preserving code transformation backed by tests. Refactor with evidence, not instinct.

Distill complex topics into layered, actionable summaries. Start with the key insight, layer in detail, end with recommended next action.

Applies OWASP Top 10, secrets management, and least-privilege principles before any code ships. Security is a build step, not an afterthought.

Prevents overengineering by enforcing minimum viable code. No speculative features, no premature abstractions, no unnecessary complexity.

Enforces minimal code modifications — touch only what you must. Prevents drive-by refactoring, comment deletions, and style changes unrelated to the task.

Breaks features into atomic, independently verifiable tasks. No task should take more than 4 hours. Unblocks parallel work and reduces integration risk.

Red-green-refactor cycle with meaningful coverage. Tests are written before implementation. Coverage is a side effect of good tests, not the goal.

Forces explicit reasoning before writing any code. Surfaces assumptions, manages confusion, and prevents hallucination by demanding clarity upfront.

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Business model classification, business model analysis, structural analysis of how a company makes money, product offering decomposition, distribution channel analysis, customer segment analysis, revenue model identification, market sizing TAM SAM SOM, competitive positioning, business unit performance, management team & leadership analysis, what does the company sell, how does the company go to market, business model type platform service product, channel mix direct vs indirect, revenue concentration risk, CEO CFO executive backgrounds and changes

Competitive landscape analysis, competitor comparison, peer positioning, market share dynamics, competitive moat assessment, Porter five forces, industry competition, competitive advantage analysis, market positioning, strategic group mapping, compare competitors

Earnings sentiment analysis, analyst estimates vs guidance, earnings surprise history, consensus sentiment, earnings revision trends, analyst rating changes, earnings beat miss track record, guidance accuracy, whisper numbers, pre-announcement sentiment

Growth strategy analysis, organic growth decomposition, inorganic growth, M&A strategy, pipeline analysis, revenue growth drivers, strategic initiatives, expansion strategy, growth trajectory, product pipeline growth

Recent quarter performance analysis, quarterly earnings review, last quarter results, quarterly financial performance, analyze recent quarter, Q4 earnings, quarterly revenue breakdown, EPS this quarter, margin analysis recent quarter, sequential growth, quarterly performance review

Risk analysis, regulatory risk assessment, competitive risk, macro risk, technology risk, litigation risk, financial risk assessment, enterprise risk, operational risk, geopolitical risk exposure

Secular technology trends, technology adoption cycle, disruption risk, AI impact analysis, digital transformation, industry 4.0 trends, technology moat, innovation trajectory, R&D effectiveness, tech competitive positioning

Turnaround analysis, stagnation detection, performance inflection, operational improvement, restructuring analysis, management change impact, cost cutting effectiveness, business transformation, recovery trajectory, operational metrics improvement

Valuation methods analysis, DCF inputs, comparable multiples, P/E ratio, EV/EBITDA, price to book, valuation assumptions, relative valuation, intrinsic value, fair value estimate

Operational KPI tracking, headcount trends, utilization rates, backlog analysis, book-to-bill ratio, operational efficiency metrics, capacity utilization, productivity metrics, operational leverage, same-store sales

Revenue decomposition, segment breakdown, geographic revenue split, product-line waterfall, revenue mix analysis, business segment performance, divisional revenue, revenue concentration, customer revenue dependency, channel revenue analysis

Unit economics analysis, CAC LTV estimation, churn inference, gross margin per unit, customer economics, subscription economics, per-unit profitability, contribution margin, payback period, cohort economics

What-if scenario analysis, scenario tree construction, base bull bear case, sensitivity to macro variables, revenue scenario modeling, cost scenario analysis, margin impact scenarios, interest rate sensitivity, currency impact scenarios, commodity price scenarios

Competitive positioning, strategic group mapping, differentiation analysis, competitive advantage assessment, market positioning map, value chain positioning, brand positioning, cost leadership vs differentiation, niche strategy analysis, disruptive positioning

Peer benchmarking, multi-ticker financial comparison, growth value matrix, composite z-score ranking, industry peer comparison, competitive benchmarking, sector relative performance, peer group analysis, industry leader comparison, financial ratio benchmarking

Sector overview, TAM estimation, competitive concentration HHI, regulatory landscape, industry analysis, market size analysis, sector trends, industry structure, market growth rate, sector profitability

Supply chain mapping, supplier dependency analysis, customer concentration, geographic concentration, bottleneck identification, supply chain risk, logistics network, sourcing strategy, inventory management, vertical integration analysis

3-statement financial model, integrated IS BS CF, income statement projection, balance sheet forecast, cash flow statement, cross-statement balancing, financial model build, operating model, three statement model, integrated financial statements

Audit spreadsheet, formula error detection, hardcoded cell finder, cross-sheet reference audit, workbook auditor, Excel model audit, financial model QA, spreadsheet review, cell dependency trace, formula integrity check

Comparable company analysis, trading comps, peer multiples, EV/EBITDA comparison, P/E benchmarking, comps table, relative valuation, industry multiples, precedent transactions, trading comparable analysis

DCF valuation model, discounted cash flow, intrinsic value, WACC calculation, terminal value, free cash flow projection, equity value per share, DCF sensitivity analysis, unlevered free cash flow, present value calculation, build a DCF

Earnings preview deck, quarterly earnings presentation, earnings summary slides, consensus vs actual presentation, earnings preview report, pre-earnings analysis, earnings expectations deck, quarterly preview, upcoming earnings summary, earnings announcement preview

LBO model, leveraged buyout, private equity acquisition, sources and uses, debt schedule, returns waterfall, sponsor IRR, MOIC calculation, PE exit analysis, LBO valuation

Investment pitch deck, investment committee presentation, buy-side pitch, sell-side pitch, investment thesis slides, executive summary presentation, financial presentation, board deck, investor presentation, strategy deck

Sum of the Parts valuation, segment-based valuation, conglomerate valuation, business segment analysis, breakup value, segment sum valuation, parts worth more than whole, hidden asset value

Produce formatted .xlsx financial statement workbooks from XBRL statement data. Uses Bash + openpyxl (Python) following Anthropic FSI xlsx-author conventions for professional Excel output with calculation arc cross-validation.

Dividend Discount Model, DDM valuation, multi-stage dividend model, Gordon Growth Model, dividend growth valuation, mature company valuation, income stock valuation, dividend yield analysis

PEG valuation, Price Earnings to Growth ratio, Peter Lynch PEG methodology, growth-adjusted valuation, earnings growth rate, PE ratio valuation, PEG sector comparison, undervalued growth stocks, fair value PEG

Financial ratio analysis, profitability ratios ROE ROA ROIC, liquidity ratios current quick cash, leverage ratios debt-to-equity interest coverage, efficiency ratios asset turnover inventory turnover DSO, valuation ratios PE PB EV/EBITDA, cross-company ratio comparison, DuPont analysis

Residual Income valuation, EVA Economic Value Added, excess return valuation, book value plus economic profit, financial institution valuation, bank valuation, insurance company valuation

Reverse DCF valuation, implied growth rate, market expectations analysis, reverse discounted cash flow, implied valuation assumptions, market-implied projections, DCF sanity check

Build REST APIs with proper error handling, status codes, request validation, response formatting, and rate limiting. Apply when creating API routes, handling errors, validating input, or designing API responses.

Harden REST and GraphQL APIs against common attack vectors. Apply when building API endpoints, implementing authentication, handling file uploads, or exposing APIs to external consumers.

Deploy Node.js applications on AWS using EC2, RDS, and managed services with security best practices. Apply when setting up AWS infrastructure, configuring databases, managing security, or optimizing costs.

Rapidly fix build failures, type errors, and lint issues with minimal diffs. Apply when builds fail, TypeScript reports errors, or CI/CD pipelines break. Focuses on getting the build green fast.

STRIDE-based threat modeling for application architecture. Apply when designing new systems, reviewing architecture, or assessing security posture of existing applications.

Production-ready Docker patterns for multi-stage builds, security hardening, and orchestration. Apply when creating Dockerfiles, docker-compose configs, or deploying containerized applications.

Enforces Conventional Commits, PR standards, merge conflict resolution, and branch management. Apply when committing code, opening PRs, resolving conflicts, managing branches, or handling Git operations.

Deploy Node.js applications on Google Cloud with Cloud Run, Cloud Firestore, and Google APIs. Implement OAuth2 authentication and manage service accounts. Apply when building serverless applications, integrating Google services, or deploying to GCP.

Structured production incident triage, resolution, and post-mortem. Apply when production systems are down, degraded, or behaving unexpectedly. Covers detection, containment, resolution, and learning.

Implement CloudWatch monitoring, error tracking with Sentry, structured logging, and alert configuration. Apply when setting up monitoring, tracking errors, debugging production issues, or configuring dashboards.

Configure serverless PostgreSQL databases on Neon with connection pooling, branching, and Edge Function integration. Apply when setting up serverless databases, connecting from Edge Functions, or managing database branches.

Implement authentication with NextAuth.js v5, Google OAuth, credentials provider, session management, and protected routes. Apply when building auth flows, protecting routes, managing sessions, or implementing RBAC.

Build Next.js 15 applications using App Router, Server Components, Client Components, Server Actions, and streaming. Apply when creating pages, handling data fetching, implementing routes, or optimizing performance.

Systematic security audit against OWASP Top 10:2025. Apply when reviewing code that handles authentication, user input, API endpoints, data storage, or any security-sensitive functionality.

Systematic web application penetration testing methodology. Apply when performing authorized security assessments, bug bounty hunting, or pre-deployment security validation. Covers recon, scanning, exploitation, and reporting.

Optimize Next.js bundle size with code splitting, tree shaking, lazy loading, and build configuration. Apply when improving performance, reducing bundle size, analyzing dependencies, or optimizing load times.

Build end-to-end tests with Playwright, Feature Object pattern, cross-browser testing, and visual regression. Apply when testing critical user flows, automating regression testing, or validating integrations.

Design database schemas, create migrations, manage data relationships, and sync with production using Prisma. Apply when designing database schemas, creating migrations, or defining data models.

Implement Next.js SEO with metadata, structured data, sitemaps, Open Graph tags, and technical SEO. Apply when optimizing pages for search engines, adding social sharing, or improving discoverability.

Save, resume, and compact Claude Code sessions for long-running work across context windows. Apply when approaching context limits, switching tasks, or continuing multi-session work.

Smart context compaction that preserves critical information. Apply when context usage approaches 60-80% to recover usable context without losing important decisions, progress, or reasoning.

Build consistent, accessible UI components with Tailwind CSS, shadcn/ui, and custom design tokens. Apply when styling components, creating design systems, implementing responsive layouts, or optimizing CSS performance.

Enforce strict Test-Driven Development with Red-Green-Refactor discipline. Apply when implementing new features, fixing bugs, or refactoring code. Ensures tests are written before implementation.

Apply TDD with RED-GREEN-REFACTOR cycles, separate unit tests from integration tests, ensure comprehensive coverage. Apply when writing tests, evaluating test coverage, testing databases, or testing admin flows.

Deploy Next.js to Vercel with zero-config, manage environment variables, set up CI/CD pipelines, and optimize production performance. Apply when deploying to Vercel, configuring environments, or setting up CI/CD workflows.

Write fast unit tests with Vitest, coverage reporting, mocking, and snapshots. Apply when testing utilities, components, services, or building test coverage.

This skill should be used when the user wants to query their Google NotebookLM notebooks for citation-backed, source-grounded answers, or manage notebooks, sources, and Studio content (audio, report, video, infographic, presentation, data table, flashcards, quiz, mind map). It drives the @roomi-fields/notebooklm-mcp engine — via the notebooklm MCP tools when they are available in the session, otherwise via its HTTP REST API — and covers Google login, citation formats, the daily-quota-aware batch/ingestion pattern, and source discovery.

Talk to your project. Natural-language project management — create items, check status, plan work, brainstorm ideas, and more.

Use when a task needs an isolated hidden Linux desktop or workspace-owned browser: GUI app QA, web/browser/shopping automation, sandboxed app observation, or stale workspace cleanup. Routes agent-workspace-linux MCP tools on demand. Does NOT apply to host desktop/Chrome control, generic MCP setup, or pure code/file edits.

Restructures a chaotic or overgrown MEMORY.md into a clean 2-layer architecture based on how Claude Code's autoDream system organizes memory — a lightweight pointer index (always loaded) and topic files (loaded on demand). Stale or superseded memories are deleted or corrected in place — not archived. Use this skill whenever the user says \"clean up MEMORY.md\", \"reorganize my memory files\", \"MEMORY.md is getting too long\", \"fix my memory structure\", or when you observe that MEMORY.md exceeds 200 lines, contains full paragraphs instead of pointers, or mixes index entries with topic content.

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Use Business Adventures for "why did this fail?", "analyze this crisis", "what pattern applies?", or "what would Brooks notice?

Apply John Bogle stewardship capitalism logic to separate investing from

Apply John Bogle index investing rules for low-cost funds, asset allocation,

Developer implementation guide for adding compact memory to an Agent — covers fork agent pattern for compaction, trigger strategy, summary format design, and memory restoration in subsequent sessions. Use when a developer asks how to implement compact memory, context compression, or memory persistence in their agent built with Claude Agent SDK or Anthropic API.

Apply Jonah Berger''s STEPPS framework. Trigger on: "why is this not spreading?", "make this campaign contagious", "diagnose viral content".

Apply China contract drafting review with San Guan Si Bu Fa. Trigger on contract review, drafting, clauses, or deal structure.

Apply Brittany Hodak's SUPER Model for customer loyalty, referrals, word of mouth, personalization, service recovery, and scalable customer experience.

Analyze Wall Street conflicts. Trigger on: "can I trust this advisor?", "is this forecast reliable?", "whose interest does this serve?".

Apply Keynes policy reasoning. Trigger on: "will austerity work?", "inflation or deflation?", "analyze this economic crisis".

Analyzes Chinese public company financial statements (balance sheet, income statement, cash flow) to assess asset quality, profit authenticity, cash flow health, solvency, and overall investment value. Use when the user provides financial data or a company name and asks whether financials are healthy, whether profits are real, whether there are red flags, or whether the company is a good investment. Based on the book "一本书读懂财报" by Xiao Xing (Tsinghua University).

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