Skills
97,725 packaged capabilities and playbooks for agents. Install any of them with one command.
Development
xAI Grok Imagine API expertise for generating, editing, and refining images through xAI REST, xai_sdk, OpenAI-compatible SDKs, and Vercel AI SDK. Use when code calls `api.x.ai/v1/images/generations` or `api.x.ai/v1/images/edits`, imports `xai_sdk` or `@ai-sdk/xai`, points an OpenAI SDK at `https://api.x.ai/v1`, or mentions Grok Imagine, `grok-imagine-image`, `grok-imagine-image-quality`, `aspect_ratio`, image editing, image variations, base64 image output, or `sample_batch()`.
Build or review Nuxt 3/4 animation: GSAP pageTransition and layoutTransition hooks, component enter/exit, scroll effects, keepalive, and cleanup. Use for interrupted navigation, missing done callbacks, or choosing Vue CSS and View Transitions, even when GSAP is unnamed. Also covers hidden-content recovery and first-load performance. Not for plain Vue or isolated GSAP API questions.
Build or review TanStack Router for React and TanStack Start animation: GSAP page transitions, component enter/exit, scroll effects, useBlocker, pending UI, route reuse, and cleanup. Use even when GSAP is unnamed, including choosing viewTransition. Also covers hidden-content recovery and first-load performance. Not for Solid, other routers, React without routing, or isolated GSAP API questions.
Home Assistant custom integration development in Python. Covers custom_components, DataUpdateCoordinator, config_flow, OAuth2, conversation agent, HACS publishing, device registry, entity platforms, services, repair issues, diagnostics, Bluetooth integrations, and multi-coordinator patterns.
Design, build, diagnose, and evolve agent harnesses: instructions, tools, execution environments, durable state, context management, verification, recovery, and bounded autonomous loops. Use for unreliable coding agents, cross-session drift, premature completion, harness audits, or changes to the runtime around a model, including bounded typed-decision routing. Do not use for prompt rewriting alone, model training, general application architecture, or operating an already evaluated agent in production; route those concerns to their specialist skills.
Technical safeguards and architectural patterns for building HIPAA-compliant software on AWS. Use when building healthcare SaaS, handling PHI (Protected Health Information), designing patient data systems, implementing healthcare APIs, setting up HIPAA-eligible AWS infrastructure, reviewing code for PHI exposure, designing audit logging, or when the user mentions patients, medical records, EHR/EMR, health data, HL7, FHIR, or covered entities. Essential for founders and developers building in healthcare or digital health space.
Train or fine-tune language and vision models using TRL (Transformer Reinforcement Learning) or Unsloth with Hugging Face Jobs infrastructure. Covers SFT, DPO, GRPO and reward modeling training methods, plus GGUF conversion for local deployment.
Provides comprehensive IBM Mainframe administration, development, and modernization guidance including z/OS operations, JCL scripting, COBOL/PL/I programming, CICS/IMS configuration, DB2 administration, TSO/ISPF usage, system programming, batch processing, and mainframe-to-cloud migration strategies. Covers mainframe security (RACF, ACF2), performance tuning, capacity planning, disaster recovery, and DevOps integration. Use when working with mainframe systems, z/OS, JES2/JES3, VTAM, USS, or when users mention "mainframe", "z/OS", "MVS", "TSO", "ISPF", "JCL", "CICS", "IMS", "DB2 mainframe", "VSAM", "RACF", "mainframe modernization", "legacy mainframe", or "IBM z Systems".
Build modern SPAs with Inertia.js and Rails using React, Vue, or Svelte. Use when creating Inertia pages, handling forms with useForm, managing shared props, or implementing client-side routing. Triggers on Inertia.js setup, SPA development, or React/Vue/Svelte with Rails.
Read and manage Jira Cloud issues, projects, boards, sprints, comments, and transitions. Use this whenever the user wants to search issues with JQL, create or update a ticket, transition an issue (move to In Progress / Done), add a comment, check a sprint or board, look up a project, or ask "what's in my Jira queue" — even if they don't say "API". Also use it for any *.atlassian.net URL, an issue key like "PROJ-123", or a JQL string. Always start from this skill when interacting with this service — its bundled scripts and recipes are the fastest path.
JSDoc and TSDoc documentation standards. Covers syntax, tags, TypeScript integration, documentation generation, and API documentation best practices. USE WHEN: user mentions "TSDoc", "TypeScript documentation", "API documentation", asks about "documenting TypeScript", "@param", "@returns", "TypeDoc", "API Extractor", "documentation tags" DO NOT USE FOR: JavaScript-only JSDoc - use `jsdoc` skill for plain JavaScript
Use when generating Kubernetes CustomResourceDefinitions from a typed schema source (zod / TypeBox / Valibot / json-schema). Covers the Structural Schema dialect's restrictions, the /status subresource trap, the metadata-prohibition rule, and plural inflection — the four pitfalls that bite on first attempt.
Launch and promote a custom shadcn/ui registry. Validate registry.json, prepare or open directory pull requests, and draft posts for Reddit, X, Dev.to, and Hacker News. Use when the user wants to launch, list, submit, or announce a shadcn/ui registry, including requests about awesome-shadcn-ui, registry.directory, free-for-dev, awesome-ai-devtools (MCP), or a new @scope registry.
MatrixScan Batch (MatrixScan, BarcodeBatch, legacy BarcodeTracking) in web/browser (TypeScript/JavaScript) projects (@scandit/web-datacapture-barcode) — tracking and scanning multiple barcodes at once. Use for integration, settings and symbologies, per-barcode brushes, HTML-element AR overlays, manual feedback, lifecycle, SDK version migration, or troubleshooting.
MatrixScan Count (BarcodeCount) in React Native projects — scandit-react-native-datacapture-barcode package. Multi-barcode counting workflows (scan-and-count, counting against an expected capture list, status overlays) with BarcodeCountView. For Capacitor use matrixscan-count-capacitor. Use for integration, settings and symbology configuration, result handling, UI customization, or troubleshooting counting workflows.
Guide for creating custom .NET MAUI handlers, customizing existing handlers with property mappers, and implementing platform-specific native views. Covers PrependToMapping/ModifyMapping/AppendToMapping, PropertyMapper, CommandMapper, partial handler classes, and handler registration. USE FOR: "custom handler", "PropertyMapper", "AppendToMapping", "PrependToMapping", "ModifyMapping", "CommandMapper", "platform-specific rendering", "native view", "handler registration", "custom control renderer". DO NOT USE FOR: platform API calls without custom controls (use maui-platform-invoke), data binding (use maui-data-binding), or gesture handling (use maui-gestures).
Guidance for calling platform-specific native APIs from .NET MAUI apps. Covers partial classes, conditional compilation, multi-targeting configuration, and dependency injection patterns for cross-platform code that needs Android, iOS, Mac Catalyst, or Windows functionality. USE FOR: "platform-specific code", "conditional compilation", "partial class", "#if ANDROID", "#if IOS", "multi-targeting", "native API call", "platform invoke", "platform-specific DI", "DeviceInfo.Platform". DO NOT USE FOR: custom control handlers (use maui-custom-handlers), permission requests (use maui-permissions), or dependency injection patterns (use maui-dependency-injection).
Guide for creating high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK).
Apply rigorous, mathematically-grounded program construction and verification. Derive correct programs from formal pre/post specifications using axiomatic semantics, structural induction, recursive design with bounding functions, algorithm immersion, and iterative derivation with loop invariants. Language-agnostic. Use this skill whenever the user wants to implement a function correctly, reason about loops or recursion, write formal specifications, derive tests from postconditions, prove termination, design data structures algebraically, or ensure program correctness by construction — even if they don't use terms like "formal methods" or "specification".
Automate maintaining a Motoko mops package — upgrade dependencies, fix compiler warnings, run tests and benchmarks, fix breakages, update CHANGELOG, review doc strings and docs, run the formatter, and prepare a patch release on a new git branch.
World-class MQL5 architect skill for MetaTrader 5. Covers zero-error EA/indicator/script/library development, institutional-grade patterns (CRT, SMC, ICT), prop-firm safety module, ATR risk engine, dashboard panels, CSV logger, multi-timeframe confluence, and backtesting optimization. Compatible with Claude, ChatGPT, Gemini, and other AI assistants.
Complete guide to MUI V7 for React + TypeScript. Teaches V6→V7 migration, advanced responsive design, professional theming, component patterns, and automatic detection of old syntax. Use when creating dashboards, modern interfaces, or working with Material-UI/MUI.
Educational GPT implementation in ~300 lines. Reproduces GPT-2 (124M) on OpenWebText. Clean, hackable code for learning transformers. By Andrej Karpathy. Perfect for understanding GPT architecture from scratch. Train on Shakespeare (CPU) or OpenWebText (multi-GPU).
NVIDIA's runtime safety framework for LLM applications. Features jailbreak detection, input/output validation, fact-checking, hallucination detection, PII filtering, toxicity detection. Uses Colang 2.0 DSL for programmable rails. Production-ready, runs on T4 GPU.
Use when needing to reorder, split, drop, or amend git commits that are not the top commit, without interactive editor access. Covers programmatic rebase via GIT_SEQUENCE_EDITOR, commit splitting with automated hunk selection, and metadata changes (author, message, dates) on any commit in a range.
Nuxt 3 full-stack Vue framework. Covers file-based routing, data fetching, server routes, and auto-imports. Use when building Nuxt applications. USE WHEN: user mentions "Nuxt", "Nuxt 3", asks about "useFetch", "Nuxt server routes", "Nitro", "Nuxt auto-imports", "Nuxt composables", "Nuxt middleware", "SSR with Vue" DO NOT USE FOR: Vue without Nuxt - use `frontend-vue` instead; Next.js - use `nextjs-app-router` instead; Nuxt 2 - consult KB for migration; Astro - use `astro` instead
New to MCP?
From what the protocol is to installing your first server, these answers cover most first questions.
An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.