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Found 1,059 Skills
Comprehensive Bun runtime expertise covering all major features. Use when working with Bun projects, migrating from Node.js, or leveraging Bun-specific APIs. Activates for: Bun.serve, Bun.file, bun:test, bun:sqlite, bun install, bun build, bunfig.toml, TypeScript in Bun, package manager operations, bundler configuration, and Node.js compatibility questions.
Comprehensive backend development guide for Langfuse's Next.js 14/tRPC/Express/TypeScript monorepo. Use when creating tRPC routers, public API endpoints, BullMQ queue processors, services, or working with tRPC procedures, Next.js API routes, Prisma database access, ClickHouse analytics queries, Redis queues, OpenTelemetry instrumentation, Zod v4 validation, env.mjs configuration, tenant isolation patterns, or async patterns. Covers layered architecture (tRPC procedures → services, queue processors → services), dual database system (PostgreSQL + ClickHouse), projectId filtering for multi-tenant isolation, traceException error handling, observability patterns, and testing strategies (Jest for web, vitest for worker).
Production-grade frontend engineering for Next.js/React, Vue/Nuxt, Angular, Svelte/SvelteKit, Remix, and Vite+React. Use for framework selection, App Router/RSC patterns, TypeScript strict-mode UI code, Tailwind CSS v4 + shadcn/ui, state/data flows (TanStack Query, Zustand), forms validation, testing (Vitest/Testing Library/Playwright), performance (Core Web Vitals), and accessibility (WCAG 2.2).
Develop AI agents, tools, and workflows with Mastra v1 Beta and Hono servers. This skill should be used when creating Mastra agents, defining tools with Zod schemas, building workflows with step data flow, setting up Hono API servers with Mastra adapters, or implementing agent networks. Keywords: mastra, hono, agent, tool, workflow, AI, LLM, typescript, API, MCP.
Electron development guidelines for building cross-platform desktop applications with JavaScript/TypeScript
Complete React + Vite expertise for building optimized, scalable applications. Covers project architecture, folder structure, component patterns, performance optimization, TypeScript best practices, testing, and build configuration. Use when building React apps with Vite, organizing projects, optimizing performance, or implementing best practices. Includes code generators, bundle analyzer, and production-ready templates.
Comprehensive dependency health auditing for JavaScript/TypeScript projects. Run npm audit, detect outdated packages, check for security advisories, and verify license compliance. Prioritises vulnerabilities by severity and provides actionable fix recommendations. Use when: auditing project dependencies, checking for vulnerabilities, updating packages, preparing for release, or investigating "npm audit" warnings. Keywords: audit, vulnerabilities, outdated, security, npm audit, pnpm audit, CVE, GHSA, license.
Validate test effectiveness with mutation testing using Stryker (TypeScript/JavaScript) and mutmut (Python). Find weak tests that pass despite code mutations. Use to improve test quality.
Senior Front-End Developer expertise in ReactJS, NextJS, JavaScript, TypeScript, HTML, CSS, and modern UI/UX frameworks
State-of-the-art data visualization for React/Next.js/TypeScript with Tailwind CSS. Creates compelling, tested, and accessible visualizations following Tufte principles and NYT Graphics standards. Activate on "data viz", "chart", "graph", "visualization", "dashboard", "plot", "Recharts", "Nivo", "D3". NOT for static images, print graphics, or basic HTML tables.
Perform language and framework specific security best-practice reviews and suggest improvements. Trigger only when the user explicitly requests security best practices 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.
Use when generating a new SDK from an OpenAPI spec. This is the PRIMARY skill for SDK generation. Triggers on "create SDK", "generate SDK", "new SDK", "quickstart", "TypeScript SDK", "Python SDK", "Go SDK", "Java SDK", "generate TypeScript", "generate Python", "generate Go", "make SDK", "build SDK", "SDK from OpenAPI", "SDK from spec", "initialize SDK project".