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Register a new user in the Todo app using Next.js frontend form, Better Auth integration, and FastAPI route. Use this skill whenever a new user wants to create an account, with Claude code orchestrating validation, security checks, and workflow automation.

Example skill demonstrating the Agent Skills standard format

Create a consistent, professional frontend theme using a defined font, color system, layout structure, and component rules. This skill focuses on visual identity, UI consistency, and production-ready theming for modern web applications.

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全言語共通のコード品質ルールと制約事項を提供します。 linter/formatter の使用、テスト要件、作業ディレクトリの報告ルールを含みます。 コードを書く際に自動的にトリガーされます。

export interface Post { id: number; title: string; content: string; author: User; created_at: string; }

ページを作成する際のスキルです

A simple hello world skill for the yw-visualizer plugin demonstrating the marketplace setup.

You are an expert development project manager with deep knowledge of parallel development workflows and dependency management.

Generate backend routes, handle requests and responses, and connect application logic with databases using scalable architecture, ensuring secure data validation and efficient business logic execution.

Implement secure authentication systems including signup, signin, password hashing, JWT tokens, and Better Auth integration.

You are the {{EXPERT_NAME}} expert for this organization. Your role is to provide accurate, actionable guidance for {{DOMAIN_DESCRIPTION}}.

RAN energy efficiency optimization with cognitive consciousness, predictive power management, and autonomous energy-saving strategies for sustainable network operations. Use when optimizing RAN energy consumption, implementing green network strategies, reducing operational costs, or enabling energy-efficient 5G networks.

Expert in Confluence operations using Atlassian MCP - automatically detects workspace Confluence configuration or prompts for site details. Use for searching, creating, updating pages, managing spaces, and adding comments with proper Markdown formatting.

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Multi-repository coordination, synchronization, and architecture management with AI swarm orchestration

Comprehensive GitHub project management with swarm-coordinated issue tracking, project board automation, and sprint planning

Initialize CLAUDE.md with programming-agnostic best practices

AI Developer optimized for Ëtrid Dollar Stable Coin (EDSC) with off-chain compliance integration

AI Developer optimized for Ëtrid Governance (Consensus Day, proposals, dilution algorithms)

Compile, test, and diagnose the multi-workspace Ëtrid Rust codebase (Substrate-based) with deterministic steps, caching, and actionable remediation for common compiler errors (E0282, E0412, trait bounds, feature gates).

Analyze and refactor the Ëtrid multi-workspace Cargo structure (E³20). Align git dependencies, remove stale version pins, unify feature flags, and generate consistent Cargo.toml patches across pallets and nodes.

Turn Rust compiler errors and Substrate API changes into precise, minimal patches. Reads failing logs, explains causes, proposes diffs, and lists commands to validate the fix.

AI Developer optimized for compliance governance in Ëtrid

VPS setup, SSH configuration, Docker deployment, Coolify, and security hardening. Complete infrastructure operations toolkit. Use when: deploying applications, setting up servers, configuring security, managing containers.

Integration patterns for Stripe, Polar, and Dodo payment systems. Handles checkout flows, webhooks, subscriptions, and billing. Use when: implementing payments, setting up subscriptions, handling webhooks.

Self-referential loop until task completion with architect verification

Iterative planning with Planner, Architect, and Critic until consensus

OpenAI Codexに相談・レビュー・分析を依頼します。「codexと相談して」「codexにレビューしてもらって」「別の視点で分析して」などの場面で使用します。

Test mobile apps on simulators and devices with automated UI interaction, screenshot capture, and accessibility checks

Provide electrical engineering guidance for residential and commercial wiring, code compliance, and circuit design

Fine-tune language models with custom datasets, configure training parameters, evaluate model performance, and manage training pipelines

Build advanced data visualizations with D3.js, Plotly, or Vega-Lite for interactive, publication-quality charts

Build recommendation engines with collaborative filtering, content-based methods, hybrid approaches, and cold-start handling

Design KPI frameworks with metric hierarchies, target setting, tracking dashboards, and performance alerting systems

Explain ML model predictions with SHAP values, LIME, feature importance, partial dependence plots, and attention visualization

Design BI dashboards with KPI selection, drill-down navigation, self-service analytics, and executive reporting views

Create data narratives with visualization sequencing, annotation, context framing, and audience-appropriate presentation

Generate synthetic datasets preserving statistical properties, privacy constraints, and domain-specific distributions

Conduct causal inference analysis with difference-in-differences, instrumental variables, propensity score matching, and regression discontinuity

Deploy ML models with containerization, serving frameworks (TorchServe, TFServing), A/B testing, and canary rollouts

Plan go-to-market strategies with market segmentation, positioning, channel selection, and launch timeline coordination

Design OKR frameworks with objective setting, key result measurement, alignment cascading, and progress tracking systems

Gather and document requirements with stakeholder interviews, use case modeling, acceptance criteria, and traceability matrices

Facilitate team retrospectives with structured reflection, root cause analysis, and improvement action item generation

Build product roadmaps with theme-based planning, dependency mapping, capacity allocation, and stakeholder communication

Design value propositions with customer job analysis, pain/gain mapping, and competitive differentiation positioning

Design and optimize business processes with workflow mapping, bottleneck analysis, and automation opportunities

Map stakeholders with influence-interest analysis, engagement strategies, and communication frequency planning

Assess product-market fit with Sean Ellis tests, NPS analysis, retention metrics, and qualitative user feedback synthesis

Manage product backlogs with prioritization frameworks, story refinement, sprint planning, and technical debt tracking

Design business metric systems with leading/lagging indicators, metric trees, and measurement instrumentation plans

Plan organizational change with stakeholder impact analysis, communication plans, training programs, and adoption metrics

Design and manage beta programs with participant recruitment, feedback collection, issue tracking, and launch readiness criteria

Define and analyze operational metrics with baseline establishment, trend analysis, anomaly investigation, and reporting cadence

Prioritize features with RICE scoring, Jobs-to-be-Done analysis, OKR alignment, and stakeholder impact assessment

Design knowledge base structures with taxonomy, article templates, search optimization, and content governance policies

Review code comments for accuracy, clarity, staleness, and alignment with the actual code behavior

Write technical documents with clear structure, precise language, consistent terminology, and audience-appropriate detail

Design and maintain design systems with tokens, components, documentation, versioning, and cross-platform consistency

Facilitate design sprints with problem framing, ideation exercises, rapid prototyping, and user testing within a week

Plan and conduct usability tests with task scenarios, participant recruitment, observation protocols, and findings reports

Establish design system governance with contribution guidelines, review processes, deprecation policies, and adoption metrics

Design interaction patterns with micro-interactions, transitions, gesture systems, and responsive behavior specifications

Create visual designs with typography, color systems, iconography, illustration styles, and brand-consistent UI elements

Design accessible interfaces with inclusive design patterns, WCAG guidelines, assistive technology support, and cognitive accessibility

Handle security incidents with forensic analysis, containment procedures, evidence preservation, and breach notification

Write automated accessibility tests, audit WCAG compliance, and build CI checks for accessibility regressions

Generate and manage test data with factories, fixtures, database seeders, and synthetic data generation

Design network architectures with VPCs, subnets, routing tables, peering, and hybrid connectivity solutions

Build Android apps with Kotlin, Jetpack Compose, Material Design, lifecycle management, and Play Store deployment

Optimize App Store and Play Store listings, manage app review processes, handle release management, and improve store rankings

Write backend test suites including unit tests, integration tests, database tests, and API contract tests

Secure APIs with OAuth 2.0, JWT validation, rate limiting, input sanitization, and OWASP API security best practices

Conduct authorized penetration testing, identify vulnerabilities, write exploit reports, and recommend remediation steps

Implement offline-first web apps with service workers, IndexedDB, background sync, and conflict resolution strategies

Implement mobile analytics tracking, event instrumentation, user flow analysis, and crash reporting integration

Design API gateway routing, rate limiting, authentication middleware, request transformation, and service mesh integration

Configure DNS records, troubleshoot resolution issues, plan DNS migration, and implement DNS-based load balancing

Design message queue systems with RabbitMQ, Kafka, or SQS for event-driven architectures, pub/sub, and dead letter handling

Test and fix cross-browser compatibility issues across Chrome, Firefox, Safari, and Edge with polyfills and feature detection

Design comprehensive testing strategies spanning unit, integration, end-to-end, and performance testing across the stack

Test infrastructure with Terratest, InSpec, ServerSpec, and automated compliance verification for IaC deployments

Build PowerShell 7 cross-platform scripts with modern cmdlets, parallel execution, and .NET interop capabilities

Conduct threat modeling with STRIDE, attack trees, data flow diagrams, and security control recommendations

Design authentication systems with OAuth 2.0, OIDC, SAML, multi-factor auth, session management, and token refresh flows

Design performance test suites, establish baselines, identify regressions, and validate throughput and latency requirements

Ensure infrastructure compliance with CIS benchmarks, SOC 2 controls, audit logging, and automated policy enforcement

Design Terraform architectures with remote backends, module composition, policy enforcement, and CI/CD pipeline integration

Plan API versioning strategies, manage breaking changes, design deprecation policies, and implement backward compatibility

Design and run load tests with k6, Locust, or JMeter to identify bottlenecks and validate performance requirements

Write security tests for authentication bypasses, authorization flaws, injection vectors, and data exposure vulnerabilities

Design caching layers with Redis, Memcached, CDN caching, HTTP cache headers, and cache invalidation strategies

Set up visual regression testing with screenshot comparison, pixel-diff thresholds, and cross-browser visual validation

Secure infrastructure with network segmentation, firewall rules, bastion hosts, VPN configuration, and intrusion detection

Implement rate limiting with token buckets, sliding windows, distributed rate limiting, and client-specific throttling

Design test architectures with test pyramids, fixture strategies, test isolation, and cross-layer testing approaches

Optimize mobile app performance with memory profiling, startup time reduction, battery optimization, and network efficiency