All Skills

GraphQL query language and runtime for APIs enabling clients to request exactly the data they need with strongly-typed schemas and single endpoint architecture.

Safe patterns for evolving database schemas in production with decision trees and troubleshooting guidance.

Working effectively with JSON data structures.

Comprehensive API design patterns covering REST, GraphQL, gRPC, versioning, authentication, and modern API best practices

Example of a properly self-contained skill following all best practices

LangChain LLM application framework with chains, agents, RAG, and memory for building AI-powered applications

Flask - Lightweight Python web framework for microservices, REST APIs, and flexible web applications with extensive extension ecosystem

Type-safe SQL ORM for TypeScript with zero runtime overhead

Jest with TypeScript - Industry standard testing framework with 70% market share, mature ecosystem, React Testing Library integration

Threat modeling workflow for software systems: scope, data flow diagrams, STRIDE analysis, risk scoring, and turning mitigations into backlog and tests. Use when designing new features, reviewing architecture changes, handling sensitive data, or hardening auth/payment/multi-tenant flows.

Biome - Fast all-in-one toolchain for web projects (linter + formatter in Rust, 100x faster than ESLint)

Build content-heavy web applications with a full-featured Python framework that includes ORM, admin interface, authentication, and REST API support.

Create and manage stacked (dependent) pull requests for complex features

Kubernetes operations playbook for deploying services: core objects, probes, resource sizing, safe rollouts, and fast kubectl debugging

Ecto patterns for Phoenix/Elixir apps. Covers schemas, changesets, migrations, queries, Ecto.Multi, transactions, constraints, associations, pagination, tenant partitioning, performance, and testing.

Vitest - Modern TypeScript testing framework with Vite-native performance, ESM support, and TypeScript-first design

TypeScript-first schema validation library with static type inference for form validation, API validation, and runtime type checking with compile-time types.

Essential Git patterns for effective version control, eliminating redundant Git guidance per agent.

CI security scanning: secrets, deps, SAST, triage, expiring exceptions

MCP (Model Context Protocol) - Build AI-native servers with tools, resources, and prompts. TypeScript/Python SDKs for Claude Desktop integration.

Cypress end-to-end and component testing patterns for web apps: reliable selectors, stable waits, network stubbing, auth handling, CI parallelization, and flake reduction

Advanced TypeScript patterns and best practices for 2025

Interactive idea refinement using Socratic method to develop fully-formed designs

Use git worktrees to work on multiple branches simultaneously with separate working directories, enabling parallel development, stacked PRs, and isolated code reviews.

Spring Boot 3.x - Java framework for production-ready applications with dependency injection, REST APIs, data access, security, and actuator monitoring

Python code-quality anti-patterns and review checks: exception-hierarchy correctness, singleton identity comparison, narrow exception handling, wildcard-import avoidance, magic-number naming, and dead-local removal. Use when reviewing or self-reviewing Python code for correctness and readability defects that linters and reviewers should catch.

Systematically trace bugs backward through call stack to find original trigger

Svelte 5 - Reactive UI framework with compiler magic, Runes API, SvelteKit full-stack framework, SSR/SSG, minimal JavaScript

Type-safe API route handler with automatic Zod validation for Next.js App Router...

Netlify JAMstack deployment platform with serverless functions, forms, and identity

Building production-quality CLI tools with Cobra command framework and Viper configuration management

Go HTTP API development with net/http, Chi, Gin, Echo, and Fiber frameworks

Playwright modern end-to-end testing framework with cross-browser automation, auto-wait, and built-in test runner

Classic VB6 patterns, COM interop, migration strategies

Compare tradeoffs and recommend architectural patterns — dependency injection, service-oriented architecture, repository, domain events, circuit breaker, and anti-corruption layer. Use when choosing between design patterns, planning microservices boundaries, evaluating system design alternatives, or asking 'which pattern should I use' for a specific coupling or resilience problem.

Step-by-step debugging workflow: reproduce the bug, isolate the failing component, trace to root cause, apply a targeted fix, and verify the fix resolves the issue without regressions. Use when you encounter a bug, error, exception, crash, or unexpected behavior that needs troubleshooting.