Enterprise-grade Python expertise with production patterns for Python 3.13.9, FastAPI 0.115.x, Django 5.2 LTS, Pydantic v2, SQLAlchemy 2.0; activates for API development, ORM usage, async patterns, testing frameworks, and production deployment strategies.
Enterprise JavaScript for Node.js and browser: Node.js 22.11.0 LTS (Jod), npm 11.x, ES2025 features, async operations, module systems, package management; activates for server-side development, scripting, tooling, package management, and runtime optimization.
Comprehensive guide for implementing Fullstory's Asynchronous API methods (Async suffix variants) for web applications. Teaches proper Promise handling, await patterns, error handling, and when to use async vs fire-and-forget methods. Includes detailed good/bad examples for initialization waiting, session URL retrieval, and conditional flows to help developers handle Fullstory's asynchronous nature correctly.
Create distinctive, production-grade frontend interfaces that avoid generic AI slop aesthetics
TypeScript best practices, type safety, and toolchain standards. Use when: - Writing or reviewing TypeScript code - Setting up TypeScript projects or tsconfig - Choosing state management patterns - Configuring build tools (tsup, Vitest) - Avoiding type gymnastics or any-abuse Keywords: TypeScript, tsconfig, strict mode, no-any, pnpm, Vitest, tsup, TanStack Query, discriminated unions, type safety, ESLint
Streamlined UI development workflow with single-command feature implementation. Automates: dev server, browser, verification, error fixing, iteration loop. **Core Command:** "implement next feature" or "implement [feature description]" **What It Does:** 1. Starts dev server (auto-detects port from package.json) 2. Launches browser (visible by default, --headless available) 3. Implements feature via frontend-design skill 4. Verifies: console errors, TS errors, network failures, visual match 5. Fixes iteratively (max 5 iterations) 6. Reports completion or escalates with detailed report **Triggers:** - "implement next feature", "implement the hero section" - "verify this implementation", "check the UI" - "fix the errors", "iterate on this" - "start dev server", "manage server"
Complete testing infrastructure and patterns for the monorepo. Use this skill when writing tests, setting up test configuration, troubleshooting test failures, or working with the CI pipeline. Covers vitest configuration, Storybook addon-vitest integration, React Testing Library patterns, mock data setup, and the test-suite-runner agent for comprehensive testing.
Comprehensive guide for building SvelteKit applications in SPA (Single Page Application) mode with client-side rendering only. Use when working on SvelteKit projects that use adapter-static with CSR, especially those with separate backends like Golang/Echo. Covers routing, page options, data loading, and proper SPA configuration while avoiding SSR features.
Create new Preact components following project conventions with proper file structure, TypeScript types, and Tailwind styling. Use when adding UI components, sections, or interactive elements to the site.
Bun build system, development workflow, and TypeScript patterns. Use when working with Bun projects, setting up development environment, or managing dependencies with Bun package manager.
Apply preferred toolchain and technology stack defaults: pnpm, Next.js, TypeScript, Convex, Vercel, Tailwind, shadcn/ui, Zustand, TanStack, Vitest. Use when setting up new projects, choosing dependencies, discussing stack decisions, or evaluating alternatives.
Build HTTP web servers with the light and low-dependency RWeb Go framework. Covers routing, middleware, cookies, groups, SSE, WebSockets, static files, proxying, and file uploads.
Skill-based matchmaking systems, ranking algorithms, and queue management for fair multiplayer matches
Go-based security techniques from "Black Hat Go" extended with macOS, Cloud, Mobile, IoT, Supply Chain, API, Web3, AI/ML, Red Team, ATT&CK, and LLM chapters. 186 techniques, 36 tools, 33 defenses across 37 chapters. Includes adversarial bisimulation games with Ungar (order-dependent) and join-semilattice structures. AAIF-compatible multiplayer agent games for human-agent security exercises.
Interactive conversation to resolve [NEEDS CLARIFICATION] markers using /speckit.clarify command. Claude asks questions about missing features, UX/UI details, behavior, and priorities. Updates specs in .specify/memory/ with answers to create complete, unambiguous documentation. This is Step 5 of 6 in the reverse engineering process.
Bisimulation game for resilient skill dispersal across AI agents with GF(3) conservation and observational bridge types.
A skill for creating minimal, GF(3)-constrained animations optimized for Slack emoji GIFs
Game development with Unity, Unreal Engine, and Godot. Use when building games, implementing game mechanics, physics, AI, or working with game engines.
Universal MCP client for connecting to any MCP server. Bundle scripts/mcp-client.py with your skill to enable dynamic tool discovery and execution without context bloat. Use when creating skills that need MCP server access.
