965 skills · sorted by relevance
Write JavaScript and TypeScript tests with Jest using consistent structure, dependency mocking, and checks for asynchronous code. Includes guidance for snapshots and React components, focusing on user interactions, accessibility, and choosing appropriate assertions for expected results.
Build browser games and game engines with HTML5, Canvas, WebGL, and JavaScript. Starter templates and reference guides support 2D and 3D graphics, controls, collision detection, audio, multiplayer features, performance improvements, and publishing.
Control a running OpenWork app from the shell to inspect UI changes and reproduce chat states. Start fresh sessions, select models, send prompts, wait for completion, capture screenshots, and run JavaScript, with no visible window by default.
Audit the technical factors that affect how search engines discover and index a website. Check crawl access, URLs, security, mobile pages, loading performance, and JavaScript rendering, then report measured results with prioritized fixes.
Crawl websites through Firecrawl to collect URLs, page content, metadata, and links. Extract content that appears through JavaScript, map site structure, and gather material for broken link checks and broader SEO analysis.
Build text, image, and audio features in JavaScript using machine learning models that run in browsers or server runtimes. Covers model selection, execution settings, caching, and memory cleanup without requiring a Python server.
Build JavaScript or TypeScript applications that run text, image, and audio models in browsers or server runtimes. Guides compatible model selection, GPU or CPU execution, caching, and memory cleanup without requiring a Python server.
Improve website loading and responsiveness by optimizing images, fonts, scripts, and caching. Identify priorities, reduce JavaScript download size, split code into smaller loads, and verify changes through a structured performance improvement workflow.
Extract website content using direct HTTP requests, JavaScript-capable browsers, or stealth browsing with Cloudflare handling. Use selectors to collect specific data, crawl linked pages, and export results as Markdown, text, HTML, or JSON.
Measure the total size of a web page and its resources, identify what slows loading, and reduce unnecessary weight. Use a 1500KB limit to guide image optimization, code compression, and removal of unused resources.
Find duplicate JavaScript libraries and multiple versions loaded by a website. Confirm their impact with performance measurements, then consolidate dependencies and review third-party scripts to reduce redundant code and potential version conflicts.
Build cryptocurrency exchange integrations in TypeScript or JavaScript with CCXT. Get examples for fetching prices, placing orders, checking balances, and receiving live updates, alongside guidance on authentication, supported methods, and error handling.
Write JavaScript and TypeScript tests with Jest, Vitest, and Testing Library. Covers functions, UI components, and APIs, including mock replacements for external services, reusable test data, and setup for automated testing.
Compare C# Web API source code with its TypeScript or JavaScript clients to find mismatched data fields, required inputs, and response handling. Receive an audit report showing client impact, severity, and confidence in each match.
Inspect suspicious PDFs without opening them in a reader. Use PDFiD, pdf-parser, and peepdf to examine internal objects, extract scripts, embedded files, and URLs, and document how the suspected attack works.
Helps build JavaScript and TypeScript projects with Bun, covering setup, package management, testing, and bundling code for distribution. It also guides migration from Node.js and use of Bun’s built-in APIs.
Apply consistent coding practices across TypeScript, JavaScript, React, and Node.js projects. Get guidance on naming, types, error handling, API design, file organization, and tests to make code easier to read and maintain.
Extract code and resources from installed Electron apps to inspect how they are built. Restore original files when source maps contain them, or format compressed JavaScript for easier reading. Supports app discovery on macOS and Windows.
Build custom calculation and parsing tools that an n8n AI Agent can call. This skill covers JavaScript or Python inputs, structured arguments, string results, tool descriptions, and fixes for invocation and output errors.
Inspect website responses with curl, using browser-like request headers and checking file size, content, and format. Identify placeholder pages and choose a browser-based or direct API approach when the expected content is missing.
Controls a browser directly to click, type, navigate, extract page data, and take screenshots. Useful for testing websites and working with pages that require JavaScript rendering, interaction, or an existing signed-in browser session.
Generate API documentation from TypeScript and JavaScript source code. Extract JSDoc comments, fill gaps in public API descriptions, and produce OpenAPI 3.0 definitions, a standard format for describing HTTP endpoints.
Review page source, browser JavaScript, and Git history for exposed API keys, passwords, and tokens. Identify potential leaks and guide fixes, including moving secrets to the server, replacing compromised credentials, and adding checks before commits.
Audit JavaScript page redirects, confirm their impact on loading time with performance measurements, and identify where server-side 301 or 302 redirects can replace them. Get specific findings and an explanation of loading and search indexing concerns.