Claude Skills

This skill calculates key financial ratios and metrics from financial statement data for investment analysis. It supports profitability, liquidity, leverage, efficiency, and valuation ratios like ROE, P/E, and Debt-to-Equity. Developers can use it to programmatically analyze company performance by providing income statement, balance sheet, and cash flow data.

This skill enables comprehensive smart contract testing using Hardhat and Foundry frameworks. It supports unit tests, integration tests, gas optimization, and mainnet forking for realistic DeFi protocol validation. Use it when setting up blockchain test suites or testing Solidity contracts with advanced patterns like fuzzing and automated coverage reporting.

This skill teaches advanced TypeScript type system features like generics, conditional types, and utility types to build robust, type-safe applications. Use it when implementing complex type logic, creating reusable type utilities, or ensuring compile-time type safety in your TypeScript projects. It's ideal for developing type-safe libraries, API clients, and generic components.

This skill translates English technical articles and documentation into Japanese while preserving the original structure, including headings, code blocks, and image links. It is triggered when a user requests to translate an article, convert English content, or process a URL or blog post. The process involves fetching the content, performing the translation, and saving it to a file.

This skill helps developers build reusable, production-ready Terraform modules for AWS, Azure, and GCP infrastructure. It provides standardized patterns for creating multi-cloud compatible IaC components to streamline provisioning and enforce organizational best practices. Use it when you need to create, standardize, or scale your infrastructure-as-code modules.

This skill provides Stripe payment processing for secure, PCI-compliant payment flows including checkout, subscriptions, and webhooks. Use it when integrating Stripe payments, building subscription billing systems, or implementing secure checkout flows in web or mobile applications. It handles core payment operations like one-time payments, recurring charges, refunds, and Strong Customer Authentication (SCA).

This skill provides smart contract security best practices for preventing common vulnerabilities in Solidity development. Use it when writing, auditing, or securing blockchain applications to address risks like reentrancy, overflow, and access control issues. It helps implement secure patterns while optimizing gas usage and preparing for professional audits.

This Claude Skill helps developers define and implement Service Level Indicators (SLIs) and Service Level Objectives (SLOs) with error budgets and alerting. Use it when establishing reliability targets, implementing SRE practices, or measuring service performance to balance reliability with innovation velocity.

This skill automatically configures Prettier for JavaScript/TypeScript projects with recommended settings. It handles installation, creates configuration files, and sets up ESLint integration when needed. Use it when adding code formatting to new or existing projects to ensure consistent code style.

This Claude Skill automates Next.js project configuration by setting up ESLint and Prettier with recommended settings. It handles package installation, creates configuration files, and resolves conflicts between tools. Use it when initializing new Next.js projects or adding linting/formatting to existing ones.

This skill executes web searches using a prioritized MCP server strategy, starting with Brave-Search and falling back to WebFetch if needed. It's designed for web searches, documentation lookups, or when users request information using search-related terms. The approach provides efficient, structured search results with built-in redundancy through its fallback mechanism.

This Claude Skill automatically selects the optimal search tool based on your query's intent, whether you need web results, local files, business locations, or specific data. It intelligently routes requests to the most appropriate MCP, such as Brave Search, Firecrawl, or Desktop Commander. Use this skill whenever you need to search for information to ensure you get the best results for your specific context.

This skill helps developers configure SAST tools like Semgrep, SonarQube, and CodeQL to automate security scanning within CI/CD pipelines. It provides guidance for setting up scans, creating custom rules, and optimizing performance to reduce false positives. Use it when implementing DevSecOps practices or setting up automated vulnerability detection in your codebase.

This skill helps developers upgrade React applications to modern versions and migrate class components to functional components with hooks. It provides guidance for adopting concurrent features, applying automated codemods, and modernizing state management patterns. Use it when updating React codebases, migrating to hooks, or adopting React 18+ features.

This skill enables developers to implement Retrieval-Augmented Generation (RAG) systems using vector databases and semantic search. It's designed for building knowledge-grounded AI applications like document Q&A systems and chatbots that require factual accuracy. The implementation focuses on reducing LLM hallucinations by grounding responses in external knowledge sources.

This skill provides advanced prompt engineering patterns to optimize LLM performance and reliability in production applications. It covers techniques like few-shot learning, structured reasoning, and template creation for developers building with Claude Code. Use it when designing complex prompts, improving output consistency, or creating reusable prompt templates.

This skill helps developers set up and configure Prometheus for comprehensive metrics collection, storage, and monitoring. Use it when implementing metric scraping, creating alerting rules, or establishing a full monitoring infrastructure for applications and systems. It provides guidance on key features like service discovery, recording rules, and integration with AlertManager.

This Claude skill guides developers through the Test-Driven Development workflow using the Red-Green-Refactor cycle. It activates when developing features, fixing bugs, or when TDD is mentioned, managing the entire development flow according to TDD best practices. The skill supports creating test lists, writing failing tests first, implementing minimal code to pass tests, and refactoring while maintaining test integrity.

This skill enables manual installation of Claude Code plugin components when the official `/plugin install` command fails. It provides diagnostic tools to verify plugin installation status and extract/install sub-agents, commands, and skills directly. Use it when plugins don't load despite successful installation messages or when troubleshooting plugin installation issues.

This Claude Skill helps developers implement PCI DSS compliance requirements for secure payment processing systems. It provides guidance for handling cardholder data, implementing encryption and tokenization, and preparing for compliance audits. Use this skill when building payment systems or conducting PCI DSS assessments.

This PayPal integration skill enables developers to implement payment processing for e-commerce applications. It supports key PayPal features including Express Checkout, subscription management, and refund workflows. Use this when building checkout flows or handling online transactions with PayPal's payment products.

This skill provides comprehensive patterns for building production-ready Node.js backend services using Express/Fastify. It covers middleware, error handling, authentication, database integration, and API design best practices. Use it when creating REST APIs, GraphQL backends, or microservices architectures.

This skill helps developers implement ERC-721 and ERC-1155 NFT standards, handling metadata, minting, and marketplace integration. Use it when creating NFT contracts, building marketplaces, or developing digital asset systems. It covers key features like soulbound tokens, royalties, and dynamic NFTs.

This skill provides Next.js best practices for App Router, Server Components, and caching strategies. It activates during Next.js development, feature implementation, or when migrating to Next.js 16. Use it for architectural reviews, performance optimization, and applying modern patterns including the latest updates.