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Found 9,298 Skills
Build crypto wallets using Circle Modular Wallets SDK with passkey authentication, gasless transactions, and extensible module architecture. Use when: creating crypto wallets with passkey-based (WebAuthn) registration and login, sending gasless transactions using Circle Gas Station paymaster, batching multiple transactions into a single user operation, implementing passkey recovery using BIP-39 mnemonic phrases, building advanced onchain wallets with custom modules (multisig, subscriptions, session keys). Triggers on: modular wallet, smart account, MSCA, passkey authentication, WebAuthn, gasless, paymaster, Gas Station, bundler client, user operation, userOp, ERC-4337, ERC-6900, account abstraction, toCircleSmartAccount, toPasskeyTransport, toModularTransport, sendUserOperation, batch transactions, 2D nonce, passkey recovery, EIP-1193 provider.
Apply Affordance Theory (Gibson, 1979; Norman, 1988) to analyze the action possibilities that an artifact provides to an actor. Use this skill when the user needs to evaluate technology design from an affordance perspective, identify why users struggle with an interface, analyze IT-enabled organizational change through affordance actualization, or when they ask 'what does this technology afford', 'why can't users figure out this feature', or 'how does technology enable new practices'.
Send instant push notifications to mobile/desktop via Pushover API. Use for urgent alerts, job completion notifications, or time-sensitive messages that need immediate attention.
Build, edit, analyze, and improve PowerPoint presentations (.pptx). Use when a user asks to: (1) Create a new presentation from scratch, (2) Edit or modify slides, text, images, or layouts, (3) Analyze a presentation for quality, consistency, or content, (4) Improve an existing presentation's design, structure, or readability, (5) Extract text or speaker notes, (6) Add charts, tables, or media to slides, (7) Review or critique a presentation.
Trade on Hyperliquid — spot and perpetual futures. Supports market orders (IOC), limit orders (GTC), leverage setting, WDK wallet, and USDC deposit from Arbitrum. Triggers: buy ETH spot, sell BTC, long ETH, short BTC, open long, open short, close position, perp trade, check balance, Hyperliquid positions, limit order, limit buy, limit sell, open orders, cancel order, modify order, GTC, deposit USDC, fund wallet, bridge USDC.
.NET and ASP.NET Core security patterns. Covers Identity, authentication, dependency auditing, secure coding practices, and OWASP for .NET ecosystem. USE WHEN: user works with "C#", ".NET", "ASP.NET Core", "Entity Framework", asks about ".NET vulnerabilities", "NuGet security", ".NET authentication", "Blazor security" DO NOT USE FOR: general OWASP concepts - use `owasp` or `owasp-top-10` instead, Java/Python security - use language-specific skills
Download videos from 1000+ websites (YouTube, Bilibili, Twitter/X, TikTok, Vimeo, Instagram, Twitch, etc.) using yt-dlp. Use this skill whenever a user shares a video URL, asks to save or download a video, wants to extract audio from an online video, needs a specific quality like 1080p or 4K, or mentions downloading a playlist. Also trigger on "下载视频", "保存视频", "提取音频", or any URL from a supported video platform.
A world-class radiologist specializing in multimodality image interpretation (CT, MRI, X-ray, ultrasound, nuclear medicine), structured reporting (BI-RADS, TI-RADS, Fleischner Society, LI-RADS), Use when: healthcare, radiology, medical-imaging, CT, MRI.
Use when a user mentions Scandit, data capture SDK, barcode scanning products, smart data capture, choosing a scanning product, comparing scanning features, supported barcode symbologies, system requirements, device compatibility, or Scandit pricing. Helps choose the right Scandit product (SparkScan, Barcode Capture, MatrixScan, Smart Label Capture, ID Capture, etc.), points to the correct documentation and sample apps for their platform, and hands off to implementation skills.
Audit and build the infrastructure a repo needs so agents can work autonomously — boot scripts, smoke tests, CI/CD gates, dev environment setup, observability, and isolation. Use when a repo can't boot, tests are broken or missing, there's no dev environment, agents can't verify their work, or agents need human help to get anything done. Do not use for reviewing an existing diff or for documentation-only cleanup.
Use this skill when you need to draft Terms of Service, a Privacy Policy, or an End-User License Agreement (EULA) for a web application, SaaS product, or mobile app. Produces comprehensive, plain-English legal documents that cover user rights, data practices, liability limits, and dispute resolution. Not a substitute for a licensed attorney; have a lawyer review before publishing for a production product.
Stop being a "nice" manager. Learn Kim Scott's framework for caring personally while challenging directly—the combination that builds trust and drives performance. Use when: **Giving feedback** (positive or constructive); **Building trust** with direct reports; **Performance conversations** that need to happen; **Team culture building** for high performance; **New manager development** learning to have hard conversations