Claude Skills by georgekhananaev

Run Google's Antigravity CLI (`agy`) — an agentic coding assistant powered by Gemini 3 (with Claude/GPT model access). Use when the user says "run/ask/use agy", "antigravity", wants a second-opinion audit from Gemini's agentic stack, or wants Claude to delegate a build/refactor task with the three effort tiers: default chat (fast), `/grill-me` (interactive planning), or `/goal` (autonomous long-running execution). Knows the real REPL slash commands, the headless `-p` flag, conversation resume...

Better Auth integration guide for TypeScript/JavaScript authentication. Covers server/client configuration, database adapters, session management, plugins, OAuth, and scaffolding auth from scratch. Use when setting up authentication with Better Auth, configuring auth.ts, adding OAuth providers, or creating sign-in/sign-up flows.

SEO toolkit with 12 specialist sub-skills — full site audits, technical SEO, content optimization, schema markup, sitemap generation, image SEO, hreflang, geo-targeting, competitor analysis, and programmatic SEO. Use when auditing websites, optimizing pages, or planning SEO strategy.

Full website SEO audit with parallel subagent delegation. Crawls up to 500 pages, detects business type, delegates to 7 specialists, generates health score. Use when user says "audit", "full SEO check", "analyze my site", or "website health check".

Generate SEO-optimized competitor comparison and alternatives pages. Covers "X vs Y" layouts, "alternatives to X" pages, feature matrices, schema markup, and conversion optimization. Use when user says "comparison page", "vs page", "alternatives page", "competitor comparison", or "X vs Y".

Content quality and E-E-A-T analysis with AI citation readiness assessment. Use when user says "content quality", "E-E-A-T", "content analysis", "readability check", "thin content", or "content audit".

Optimize content for AI Overviews (formerly SGE), ChatGPT web search, Perplexity, and other AI-powered search experiences. Generative Engine Optimization (GEO) analysis including brand mention signals, AI crawler accessibility, llms.txt compliance, passage-level citability scoring, and platform-specific optimization. Use when user says "AI Overviews", "SGE", "GEO", "AI search", "LLM optimization", "Perplexity", "AI citations", "ChatGPT search", or "AI visibility".

Hreflang and international SEO audit, validation, and generation. Detects common mistakes, validates language/region codes, and generates correct hreflang implementations. Use when user says "hreflang", "i18n SEO", "international SEO", "multi-language", "multi-region", or "language tags".

Image optimization analysis for SEO and performance. Checks alt text, file sizes, formats, responsive images, lazy loading, and CLS prevention. Use when user says "image optimization", "alt text", "image SEO", "image size", or "image audit".

Deep single-page SEO analysis covering on-page elements, content quality, technical meta tags, schema, images, and performance. Use when user says "analyze this page", "check page SEO", or provides a single URL for review.

Strategic SEO planning for new or existing websites. Industry-specific templates, competitive analysis, content strategy, and implementation roadmap. Use when user says "SEO plan", "SEO strategy", "content strategy", "site architecture", or "SEO roadmap".

Programmatic SEO planning and analysis for pages generated at scale from data sources. Covers template engines, URL patterns, internal linking automation, thin content safeguards, and index bloat prevention. Use when user says "programmatic SEO", "pages at scale", "dynamic pages", "template pages", "generated pages", or "data-driven SEO".

Detect, validate, and generate Schema.org structured data. JSON-LD format preferred. Use when user says "schema", "structured data", "rich results", "JSON-LD", or "markup".

Analyze existing XML sitemaps or generate new ones with industry templates. Validates format, URLs, and structure. Use when user says "sitemap", "generate sitemap", "sitemap issues", or "XML sitemap".

Technical SEO audit across 9 categories: crawlability, indexability, security, URL structure, mobile, Core Web Vitals, structured data, JavaScript rendering, and IndexNow protocol. Use when user says "technical SEO", "crawl issues", "robots.txt", "Core Web Vitals", "site speed", or "security headers".

Analyze color combinations for readability and accessibility compliance per WCAG 2.1/2.2 standards (Contrast Minimums 1.4.3 and Enhanced Contrast 1.4.6). Use this skill whenever the user shares a design, color palette, CSS, HTML, Tailwind config, theme file, screenshot of a UI, or mentions anything about text being hard to read, colors clashing, poor contrast, accessibility compliance (WCAG), or asks "can you check if these colors work together?" Also trigger when reviewing any frontend code,...

Composition patterns for building flexible, maintainable React components. Avoid boolean prop proliferation by using compound components, lifting state, and composing internals. These patterns make codebases easier for both humans and AI agents to work with as they scale.

Production-grade tabular data manipulation using pandas & openpyxl. This skill should be used when editing, creating, filtering, sorting, merging, pivoting, deduplicating, validating, or transforming CSV, Excel (xlsx/xls), JSON, Parquet, or TSV files. Supports 18 operations via CLI scripts, advanced Excel formatting (multi-sheet, freeze, auto-filter, validation, styling), and file-converter integration for format pipelines.

Bulk domain availability checker. Use when the user wants to check whether one or many domain names are available for registration (e.g., "is acme.com free", "check these 50 domains", "find an available .io for my brand"). Supports any TLD (.com/.net/.io/.ai/.dev/.app/...), parallel checking, three input modes (CLI args / file / stdin), bare-name + TLD-list expansion, and table/JSON/CSV output. Python stdlib only — no pip installs, no API keys.

Convert & transform files - images (resize, format, HEIC), markdown (PDF/HTML), data (CSV/JSON/YAML/TOML/XML), SVG, base64, text encoding. Cross-platform, single & batch mode. This skill should be used when converting file formats, resizing images, generating PDFs from markdown, or transforming data between formats.

Search, scrape, and interact with the web via the Firecrawl CLI. Use this skill whenever the user wants to search the web, find articles, research a topic, look something up online, scrape a webpage, grab content from a URL, get data from a website, crawl documentation, download a site, or interact with pages that need clicks or logins. Also use when they say "fetch this page", "pull the content from", "get the page at https://", or reference external websites. This provides real-time web sea...

Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, artifacts, posters, or applications (examples include websites, landing pages, dashboards, React components, HTML/CSS layouts, or when styling/beautifying any web UI). Generates creative, polished code and UI design that avoids generic AI aesthetics.

Generate beautiful Mermaid diagrams — flowcharts, sequence, ER, class, state, pie, gantt, mindmap, timeline, gitgraph, C4, kanban, block, quadrant, sankey, XY charts. Renders to PNG locally and Markdown for GitHub. Use when the user asks for diagrams, visualizations, schemas, flowcharts, architecture overviews, database schemas, API flows, project timelines, git branching strategies, org charts, or any visual representation of systems, workflows, or data.

Monday.com workspace management via official MCP server. This skill should be used when creating, updating, moving, archiving, or deleting items/boards/groups on Monday.com, managing columns, adding comments, or querying workspace data. Supports both hosted and local MCP deployment with interactive setup guidance.

Comprehensive MongoDB Atlas + mongosh skill for performance auditing, all index types (b-tree/text/2dsphere/hashed/TTL/partial/wildcard/Atlas-Search/Vector-Search), Performance Advisor analysis, query explain, schema advice, backup status, alerts, week-over-week diffs, and additive index creation. Read-only by default; create-index ops gated behind explicit `--confirm`. Hard-blocks any destructive op (delete, drop, restore, pause, terminate, kill, dbuser write, network change). Works against ...

Master orchestrator, peer-to-peer, and hierarchical multi-agent architectures

Safety-first n8n management skill — list/inspect workflows, executions, credentials, tags, projects, variables, source-control status; trigger runs (CLI/webhook); activate/deactivate; backup/restore; audit; diff. Two backends auto-detect: REST API (cloud + remote self-hosted, urllib stdlib) & `n8n` CLI (self-hosted only, full surface incl. encrypted/decrypted credential export). Read-only by default; mutations require `--confirm` + dry-run preview. Hard-blocks 14 destructive CLI prefixes (del...

Build and operate multi-tenant AI agent platforms on Neon. Use this skill whenever the user is designing an agent/app builder, provisioning a Neon project or database per user/app/agent run, managing thousands of tenant projects, separating sponsored free users from paid customers, moving projects between orgs, choosing personal vs organization vs project-scoped API keys, tracking fleet consumption or Agent Plan costs, creating compound checkpoints that combine DB snapshots with source revisi...

Use this skill to query your Google NotebookLM notebooks directly from Claude Code for source-grounded, citation-backed answers from Gemini. Browser automation, library management, persistent auth. Drastically reduced hallucinations through document-only responses.

Obsidian vault management — CLI operations, Markdown extensions, JSON Canvas, Bases databases, and Defuddle content extraction. Use when interacting with Obsidian vaults, managing notes, searching content, or developing plugins.

Extract clean markdown content from web pages using Defuddle CLI, removing clutter and navigation to save tokens. Use instead of WebFetch when the user provides a URL to read or analyze, for online documentation, articles, blog posts, or any standard web page.

Create and edit JSON Canvas files (.canvas) with nodes, edges, groups, and connections. Use when working with .canvas files, creating visual canvases, mind maps, flowcharts, or when the user mentions Canvas files in Obsidian.

Create and edit Obsidian Bases (.base files) with views, filters, formulas, and summaries. Use when working with .base files, creating database-like views of notes, or when the user mentions Bases, table views, card views, filters, or formulas in Obsidian.

Interact with Obsidian vaults using the Obsidian CLI to read, create, search, and manage notes, tasks, properties, and more. Also supports plugin and theme development with commands to reload plugins, run JavaScript, capture errors, take screenshots, and inspect the DOM. Use when the user asks to interact with their Obsidian vault, manage notes, search vault content, perform vault operations from the command line, or develop and debug Obsidian plugins and themes.

Create and edit Obsidian Flavored Markdown with wikilinks, embeds, callouts, properties, and other Obsidian-specific syntax. Use when working with .md files in Obsidian, or when the user mentions wikilinks, callouts, frontmatter, tags, embeds, or Obsidian notes.

Use when reviewing code for security vulnerabilities, implementing authentication/authorization, handling user input, or discussing web application security. Covers OWASP Top 10:2025, ASVS 5.0, and Agentic AI security (2026).

Multi-agent orchestration patterns. Use when multiple independent tasks can run w/ different domain expertise or when comprehensive analysis requires multiple perspectives.

Implements Manus-style file-based planning to organize and track progress on complex tasks. Creates task_plan.md, findings.md, and progress.md. Use when asked to plan out, break down, or organize a multi-step project, research task, or any work requiring 5+ tool calls. Supports automatic session recovery after /clear.

Safety-first Salesforce CLI skill wrapping `sf` (v2). This skill should be used when performing Salesforce operations — SOQL/SOSL queries, metadata deploy/retrieve, data import/export, Apex execution, org management, auth, and platform events. Enforces risk classification w/ mandatory confirmation for all write/destructive operations. Integrates w/ Salesforce MCP servers and file-converter skill for format conversion.

Guides Stripe integration decisions — API selection (Checkout Sessions vs PaymentIntents), Connect platform setup (Accounts v2, controller properties), billing/subscriptions, Treasury financial accounts, integration surfaces (Checkout, Payment Element), migrating from deprecated Stripe APIs, and security best practices (API key management, restricted keys, webhooks, OAuth). Use when building, modifying, or reviewing any Stripe integration — including accepting payments, building marketplaces,...

Swift 6.2 Approachable Concurrency — single-threaded by default, @concurrent for explicit background offloading, isolated conformances for main actor types.

SwiftUI architecture patterns, state management with @Observable, view composition, navigation, performance optimization, and modern iOS/macOS UI best practices.

Terraform infrastructure-as-code skills from HashiCorp. Covers HCL code generation with style conventions, testing with .tftest.hcl files, and module refactoring. Use when writing, reviewing, generating, or refactoring Terraform configurations, creating tests, or designing modules.

Security-focused static analysis and code auditing skills from Trail of Bits. Includes CodeQL deep analysis, Semgrep scanning, and SARIF result processing. Use when performing security audits, running static analysis, scanning for vulnerabilities, or processing scan results.

UI/UX design intelligence. 50 styles, 21 palettes, 50 font pairings, 20 charts, 9 stacks (React, Next.js, Vue, Svelte, SwiftUI, React Native, Flutter, Tailwind, shadcn/ui). Actions: plan, build, create, design, implement, review, fix, improve, optimize, enhance, refactor, check UI/UX code. Projects: website, landing page, dashboard, admin panel, e-commerce, SaaS, portfolio, blog, mobile app, .html, .tsx, .vue, .svelte. Elements: button, modal, navbar, sidebar, card, table, form, chart. Styles...

Comprehensive best practices for React Native and Expo applications. Contains rules across multiple categories covering performance, animations, UI patterns, and platform-specific optimizations.

Web quality optimization skills based on Google Lighthouse guidelines and Core Web Vitals. Use when asked to audit web quality, optimize performance, improve accessibility, fix SEO, apply best practices, or analyze Core Web Vitals (LCP, INP, CLS).

Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.

A comprehensive code review skill that analyzes code quality, security, performance, and best practices.

Efficiently navigate codebase documentation during Research phase. Use instead of Grep/Glob for finding architectural decisions, feature specs, and technical docs. Maps topics to doc locations for fast context retrieval. If codebase lacks documentation structure, provides patterns to establish one.