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Go programming best practices and style guide for writing, reviewing, refactoring, and modernizing Go code. Use for Go code reviews, concurrency patterns, error handling, API design, performance-sensitive code, testing, linting, Go-version compatibility, and idiomatic Go style decisions.

Numscript is a Domain-Specific Language (DSL) designed to model complex financial transactions, replacing complex and error-prone custom code with easy-to-read, declarative scripts.

Comprehensive React 19 patterns expert covering Server Components, Actions, use() hook, useOptimistic, useFormStatus, useFormState, React Compiler, concurrent features, Suspense, and modern TypeScript development. Proactively use for any React development, component architecture, state management, performance optimization, or when implementing React 19's latest features.

Comprehensive Tailwind CSS utility-first styling patterns covering responsive design, layout, flexbox, grid, spacing, typography, colors, and modern CSS best practices. Ideal for styling React/Vue/Svelte components, building responsive layouts, or optimizing CSS workflow.

Conduct WCAG 2.2 accessibility audits with automated testing, manual verification, and remediation guidance. Use when auditing websites for accessibility, fixing WCAG violations, or implementing accessible design patterns.

Smart read-only cybersecurity audit for local projects. This v0.4.1 cleanup release features verified packaging, install validation, update scripts, and audit profiles.

This end-of-session handoff captures session knowledge, dispatches output across a 7-bucket taxonomy, triggers document and skill freshness audits, emits follow-up items as GitHub issues, and updates memory.

Calculates IP ranges, CIDR blocks, and subnet allocations for cloud networks (Azure, AWS, GCP, Oracle, AliCloud). Supports single VNet/VPC or hub-spoke topologies with automatic AZ distribution, outputting as info tables, JSON, or IaC templates (Terraform, Bicep, ARM, PowerShell, CloudFormation).

Use when you need to validate documentation completeness and cannot objectively test it yourself because you have implementation context.

This skill uses the Cloudflare Browser Rendering /crawl REST API to crawl websites, extract content as HTML/Markdown/JSON, and build knowledge bases. It also covers making websites crawlable with tools like robots.txt, sitemaps, and Cloudflare AI Crawl Control.

This skill converts Claude Code skills into prompts directly usable by web AIs (DeepSeek, Doubao, ChatGPT web version, etc.). It is triggered when the user requests to convert a skill into a web AI prompt.

Check if your implementation plan will succeed with Claude Code. It evaluates whether phases fit context windows and follow iterative patterns for session-based development.