Browse skills

ESLint is the standard linting tool for JavaScript and TypeScript projects. It statically analyzes your code to find problems, enforce coding conventions, and catch bugs before they reach production. ESLint 9 introduced the flat config format, replacing the legacy `.eslintrc` system with a simpler, more composable `eslint.config.js` file. With a rich plugin ecosystem covering React, TypeScript, accessibility, and import ordering, ESLint is the backbone of code quality in modern web development.

You are an expert in Amazon EventBridge, the serverless event bus for building event-driven architectures. You help developers route events between AWS services, SaaS applications, and custom microservices using event rules, patterns, transformations, dead-letter queues, and scheduling — decoupling producers from consumers with content-based routing that scales automatically.

You are an expert in Excalibur.js, the TypeScript-first 2D game engine built for the web. You help developers build browser games using Excalibur's Actor system, Scene management, Tiled integration, physics, animation, sound, and input handling — with first-class TypeScript support, excellent documentation, and a focus on developer experience over raw performance.

Read, transform, analyze, and generate Excel and CSV files. Use when a user asks to open a spreadsheet, process Excel data, merge CSVs, create pivot tables, clean up data, convert between Excel and CSV, add formulas, filter rows, or generate reports from tabular data. Handles .xlsx, .xls, and .csv.

Organize, categorize, and summarize business expenses for reimbursement and tax preparation. Use when a user asks to create an expense report, organize receipts, categorize expenses, summarize spending, prepare expenses for reimbursement, or compile business expenses for tax filing. Handles receipts, CSV data, and manual entries.

ExternalDNS for automatic DNS record management in Kubernetes. Use when the user needs to synchronize Kubernetes Ingress and Service resources with DNS providers like Route 53, CloudDNS, or Cloudflare automatically.

Protect servers from brute force attacks with Fail2Ban. Use when a user asks to block repeated failed login attempts, protect SSH, secure web servers from brute force, or ban malicious IPs automatically.

Deploy and run AI models instantly with fal.ai — image generation, video, audio, and custom models. Use when generating images with Flux/SDXL/LoRA, running ML inference at scale, building AI media features, or accessing state-of-the-art generative models via a simple API.

Find edge-case bugs with property-based testing using fast-check — generate thousands of random inputs automatically. Use when someone asks to "find edge cases", "fast-check", "property-based testing", "fuzz testing in TypeScript", "generate random test data", "QuickCheck for JavaScript", or "test with random inputs". Covers property definitions, arbitraries, shrinking, model-based testing, and integration with Vitest/Jest.

Fastify is a high-performance Node.js web framework focused on developer experience and low overhead. It features JSON Schema validation, a powerful plugin system, lifecycle hooks, and automatic serialization for blazing-fast APIs.

When the user needs to implement feature flags, gradual rollouts, or experiment bucketing. Use when the user mentions "feature flag," "feature toggle," "gradual rollout," "canary release," "percentage rollout," "kill switch," "user bucketing," "experiment assignment," or "dark launch." Covers flag evaluation, deterministic user assignment, targeting rules, and flag lifecycle management. For experiment design, see ab-test-setup. For event tracking, see analytics-tracking.

Write well-structured git commit messages following the Conventional Commits standard. Use when a user asks to commit changes, write a commit message, stage and commit, improve a commit message, or follow commit conventions. Analyzes diffs to produce accurate, meaningful commit messages.

Transcode, convert, edit, and process audio and video with FFmpeg. Use when a user asks to convert video formats (webm to mp4, mkv to mp4), extract audio from video, compress video files, trim or cut clips, concatenate videos, add subtitles, create thumbnails, apply filters, change resolution or bitrate, re-encode media, create GIFs from video, add watermarks, normalize audio, stream media, or build automated media processing pipelines.

Expert guidance for Amazon Q Developer (formerly Fig), the terminal tool that provides IDE-style autocomplete, AI chat, and CLI builder capabilities. Helps developers create custom completion specs, build CLI tools with autocomplete, and configure terminal productivity features.

Convert Figma designs into production-ready frontend code. Use when someone shares a Figma URL, design screenshot, or exported design tokens and needs React/Vue/HTML components, responsive layouts, or design system code. Trigger words: Figma, design to code, mockup, wireframe, UI implementation, pixel perfect, design handoff, component from design.

Find and build a community around your product — identify where your users gather, engage authentically, and grow a loyal user base. Use when: building community-led growth, finding early adopters, creating a brand community.

Expert guidance for Fireworks AI, the platform for running open-source LLMs (Llama, Mixtral, Qwen, etc.) with enterprise-grade speed and reliability. Helps developers integrate Fireworks' inference API, fine-tune models, and deploy custom model endpoints with function calling and structured output support.

Flask is a lightweight Python micro web framework that provides the essentials for web development without imposing structure. It uses Jinja2 templates and Werkzeug WSGI toolkit, with a rich ecosystem of extensions for databases, auth, and more.

Configure Fluentd for unified log collection, routing, filtering, and forwarding across distributed systems. Use when a user needs to aggregate logs from multiple sources, transform log data with filters, route logs to different destinations, or set up Fluentd as a Kubernetes log collector.

FLUX image generation models — Flux Pro, Dev, and Schnell via fal.ai, Replicate, or Black Forest Labs API. Use when generating high-quality or photorealistic images, applying LoRA fine-tuning for custom styles, or building production image generation pipelines.