bobmatnyc

167 verified skills6,517 total stars

Testing Anti-Patterns

Never test mock behavior. Never add test-only methods to production classes. Understand dependencies before mocking. Language-agnostic principles with TypeScript/Jest and Python/pytest examples.

development49

code-production-process

Six-stage quality-gate pipeline for any code implementation task

development49

opentelemetry

OpenTelemetry observability patterns: traces, metrics, logs, context propagation, OTLP export, Collector pipelines, and troubleshooting

devops49

mpm-orchestration-demo

Reference implementation demonstrating the Command → Agent → Skill orchestration pattern in Claude MPM, showing both preloaded-skill and dynamic-skill-invocation styles

data-ai49

cargo-release

PM-invocable protocol for Cargo publish and release operations in the trusty-tools Rust monorepo: semver rules, 10-step release sequence, macOS codesign safety, and cross-crate dependency ordering

tools49

skill-creator

Guide for creating effective skills

documentation49

mcp-builder

MCP (Model Context Protocol) server build and evaluation guide, including local conventions for tool surfaces, config, and testing

tools49

internal-comms-3p-updates

Framework for writing concise 3P (Progress, Plans, Problems) team updates for executives and stakeholders

development49

env-manager

Environment variable validation, security scanning, and management for Next.js, Vite, React, and Node.js applications

development49

api-documentation

Best practices for documenting APIs and code interfaces, eliminating redundant documentation guidance per agent.

development49

webapp-testing-patterns

Comprehensive web application testing patterns with Playwright selectors, wait strategies, and best practices

development49

Condition-Based Waiting

Replace arbitrary timeouts with condition polling for reliable async tests

testing49

web-performance-optimization

Optimize web performance using Core Web Vitals, modern patterns (View Transitions, Speculation Rules), and framework-specific techniques

development49

code-review-standards

Severity-tagged code review checklist (CRITICAL/HIGH/MEDIUM/LOW) used by code-critic agent

development49

security-scanning

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

testing49

bug-fix

Systematic workflow for verifying bug fixes to ensure quality and prevent regres...

testing49

api-design-patterns

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

development49

pre-merge

Comprehensive verification workflow before merging changes to production.

tools49

screenshot

Visual verification workflow for UI changes to accelerate code review and catch ...

development49

gh-cli

Reliably drive the GitHub gh CLI for issue, PR, and label operations in automation and subagent environments, with pre-flight verification so you never fabricate a success or a fake issue URL.

tools49

test-driven-development

Comprehensive TDD patterns and practices for all programming languages, eliminating redundant testing guidance per agent.

development49

rust-quality-gate

PM-invocable protocol for running and interpreting Rust quality gates in the trusty-tools monorepo: fmt, clippy, and test in strict sequence before any merge

tools49

kubernetes

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

development49

terraform

Terraform infrastructure-as-code workflow patterns: state and environments, module design, safe plan/apply, drift control, and CI guardrails

development49

artifacts-builder

Suite of tools for creating elaborate, multi-component claude.ai HTML artifacts using modern frontend web technologies (React, Tailwind CSS, shadcn/ui)

tools49

test-quality-inspector

Test quality inspection framework for reviewing test coverage, identifying gaps, and ensuring comprehensive validation

development49

threat-modeling

Threat modeling workflow for software systems: scope, data flow diagrams, STRIDE analysis, risk scoring, and turning mitigations into backlog and tests

testing49

vb-core

Core VB.NET patterns, type safety, modern language features

tools44

vercel-ai

Vercel AI platform guidance covering AI SDK, AI Gateway, Vercel Agent, and MCP. Use when building AI-powered or agentic workloads on Vercel.

tools44

vercel-deployments-builds

Vercel deployment lifecycle for builds, deployments, previews, release phases, and rollback. Use when configuring build output, deployment workflows, or release controls on Vercel.

development44

vercel-overview

Vercel platform overview for onboarding, projects, CLI, Git integration, environment variables, project configuration, REST API, and webhooks. Use when planning or operating workloads on Vercel.

tools44

vercel-teams-billing

Vercel account, team, and billing management including plans and spend controls. Use when managing teams, accounts, or cost governance on Vercel.

development44

mypy

mypy - Static type checker for Python with gradual typing, strict mode, Protocol support, and framework integration

development44

flask

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

tools44

pydantic

Python data validation using type hints and runtime type checking with Pydantic v2's Rust-powered core for high-performance validation in FastAPI, Django, and configuration management.

development44

drizzle-orm

Type-safe SQL ORM for TypeScript with zero runtime overhead

development44

git-worktrees

Use git worktrees for parallel development on multiple branches simultaneously

development44

tanstack-query

TanStack Query (React Query) for asynchronous server-state management with automatic caching, background refetching, optimistic updates, and pagination in React applications.

development44

zustand

Minimal, unopinionated state management library for React with simple hook-based API, no providers, and minimal boilerplate for global state without Redux complexity.

development44

vitest

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

development44

headlessui

Headless UI - Unstyled, fully accessible UI components for React and Vue with built-in ARIA patterns

development44

tailwind-css

Tailwind CSS utility-first framework for rapid UI development with responsive design and dark mode

tools44

graphql

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

tools44

docker

Docker containerization for packaging applications with dependencies into isolated, portable units ensuring consistency across development, testing, and production environments.

development44

github-actions

GitHub Actions CI/CD workflows for automating build, test, and deployment

development44

homebrew-formula-maintenance

Homebrew formula maintenance workflows for Python CLIs and taps, including version bumps, SHA/resource updates, testing, audits, and releases.

tools44

json-data-handling

Working effectively with JSON data structures.

data-ai44

vb6-legacy

Classic VB6 patterns, COM interop, migration strategies

databases44

Brainstorming Ideas Into Designs

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

development44

Decision framework for architectural patterns including DI, SOA, Repository, Domain Events, Circuit Breaker, and Anti-Corruption Layer. Use when designing systems, choosing patterns, or reviewing architecture.

development44

stacked-prs

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

tools44

Requesting Code Review

Dispatch code-reviewer subagent to review implementation against plan or requirements before proceeding

development44

sec-edgar-pipeline

SEC EDGAR extraction pipeline: setup, filing discovery by CIK, recipe-driven extraction, and report generation.

testing44

django-framework

Django full-featured Python web framework with batteries included (ORM, admin, auth)

development44

vercel-networking-domains

Vercel networking and routing for domains, DNS, redirects, rewrites, headers, CDN, edge cache, and regions. Use when configuring routing or traffic behavior on Vercel.

devops44

vercel-security-access

Vercel security and access controls including RBAC, SSO, deployment protection, firewall, bot defense, audit logs, and 2FA. Use when securing Vercel projects or managing access.

testing44

asyncio

Python asyncio - Modern concurrent programming with async/await, event loops, tasks, coroutines, primitives, aiohttp, and FastAPI async patterns

development44

vercel-functions-runtime

Vercel Functions and Edge Runtime, including cron jobs and routing middleware. Use when building APIs, serverless workloads, or scheduled tasks on Vercel.

development44

datadog-observability

Full-stack observability with Datadog APM, logs, metrics, synthetics, and RUM. Use when implementing monitoring, tracing, alerting, or cost optimization for production systems.

testing44

vercel-observability

Vercel observability for Web Analytics, Speed Insights, logs, tracing, alerts, and observability tooling. Use when monitoring performance or debugging production behavior on Vercel.

tools44

rust-desktop-applications

Build cross-platform desktop applications with Rust using Tauri framework and native GUI alternatives

development44

pytest

pytest - Python's most powerful testing framework with fixtures, parametrization, plugins, and framework integration for FastAPI, Django, Flask

tools44

pyright-type-checker

Pyright fast Python type checker from Microsoft with VS Code integration and strict type checking modes

development44

clap

Build production Rust CLIs with Clap: subcommands, config layering, validation, exit codes, shell completions, and testable command surfaces

tools44

vercel-storage-data

Vercel data and storage services including Postgres, Redis, Vercel Blob, Edge Config, and data cache. Use when selecting data storage or caching on Vercel.

devops44

celery

Distributed task queue system for Python enabling asynchronous execution of background jobs, scheduled tasks, and workflows across multiple workers with Django, Flask, and FastAPI integration.

development44

axum

Axum (Rust) web framework patterns for production APIs: routers/extractors, state, middleware, error handling, tracing, graceful shutdown, and testing

development44

tauri-event-system

Advanced Tauri event patterns for bidirectional communication, streaming data, window-to-window messaging, and custom event handling

development44

trpc-type-safety

tRPC end-to-end type-safe APIs for TypeScript with React Query integration and full-stack type safety

development44

drizzle-migrations

Migration-first database development workflow using Drizzle ORM for TypeScript/J...

development44

turborepo

High-performance monorepo build system with intelligent caching, task orchestration, and parallel execution for multi-package repositories and microservices.

development44

nodejs-backend-typescript

Node.js backend development with TypeScript, Express/Fastify servers, routing, middleware, and database integration

development44

fastapi-local-dev

FastAPI dev/prod runbook (Uvicorn reload, Gunicorn)

development44

sqlalchemy-orm

SQLAlchemy Python SQL toolkit and ORM with powerful query builder, relationship mapping, and database migrations via Alembic

tools44

jest-typescript

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

development44

shadcn-ui

shadcn/ui component library for React with Tailwind CSS - copy-paste accessible components with full code ownership

development44

typescript-core

Advanced TypeScript patterns and best practices for 2025

development44

fastify

Production Fastify (TypeScript) patterns: schema validation, plugins, typed routes, error handling, security hardening, logging, testing with inject, and graceful shutdown

tools44

zod

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

development44

prisma-orm

Prisma ORM for TypeScript - Type-safe database toolkit with schema-first development, auto-generated client, migrations, relations, and Prisma Studio

tools44

daisyui

Tailwind CSS component library providing semantic class names for 50+ components with built-in themes, dark mode, and customization for rapid UI development.

development44

vb-database

ADO.NET patterns, Entity Framework, database best practices

development44

dependency-audit

Dependency audit and cleanup workflow for maintaining healthy project dependencies. Use for regular maintenance, security updates, and removing unused packages.

testing44

kysely

Kysely type-safe SQL query builder - End-to-end type safety from schema to queries, migrations, transactions, plugins

development44

media-transcoding

FFmpeg-based media transcoding workflows with preset-driven conversions, batch processing, and safe backups for web/mobile/archive outputs.

development44

api-security-review

API security checklist for reviewing endpoints before deployment. Use when creating or modifying API routes to ensure proper authentication, authorization, and input validation.

development44

emergency-release-workflow

Emergency release workflow for critical bug fixes and security patches. Use when production issues require fast-track deployment.

testing44

pr-quality-checklist

PR quality checklist for ensuring comprehensive, well-documented pull requests. Use before submitting PRs to improve review efficiency and code quality.

development44

Dispatching Parallel Agents

Use multiple Claude agents to investigate and fix independent problems concurrently

data-ai44

vb-winforms

Windows Forms development patterns, UI threading, data binding

development44

git-workflow

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

data-ai44

Writing Plans

Create detailed implementation plans with bite-sized tasks for engineers with zero codebase context

development44

database-migration

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

testing44

reporting-pipelines

Reporting pipelines for CSV/JSON/Markdown exports with timestamped outputs, summaries, and post-processing.

devops44

systematic-debugging

Systematic debugging methodology emphasizing root cause analysis over quick fixes

development44

Root Cause Tracing

Systematically trace bugs backward through call stack to find original trigger

testing44

verification-before-completion

Run verification commands and confirm output before claiming success

data-ai44

xlsx

Working with Excel files programmatically.

content-media44

neon-serverless-postgres

Neon serverless Postgres with autoscaling, instant database branching, and zero-downtime deployments. Use when building serverless applications, implementing database branching for dev/staging, or deploying with Vercel/Netlify.

development30

supabase-backend-platform

Supabase open-source Firebase alternative with Postgres, authentication, storage, and realtime subscriptions. Use when building full-stack applications requiring integrated backend services with Next.js, React, or Vue.

development30

validated-handler

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

development30

vue

Vue 3 - Progressive JavaScript framework with Composition API, reactivity system, single-file components, Vite integration, TypeScript support

development30

svelte5-runes-static

Svelte 5 runes + SvelteKit adapter-static (SSG/SSR) patterns for hydration-safe state, store bridges, and reactivity that survives prerendering

development30

react-state-machines

Building reusable React state machine skills with XState v5 and the actor model

development30

nextjs-env-variables

Next.js environment variable management with file precedence, variable types, and deployment configurations. Use when configuring Next.js applications, managing environment-specific settings, or deploying to Vercel/Railway/Heroku.

testing30

hono-testing

Hono testing patterns - app.request(), test client, mocking environment, and integration testing strategies

tools30

hono-middleware

Hono middleware patterns - creation, composition, built-in middleware, and execution order for web applications

development30

golang-http-frameworks

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

development30

golang-grpc

Production gRPC in Go: protobuf layout, codegen, interceptors, deadlines, error codes, streaming, health checks, TLS, and testing with bufconn

development30

phoenix-liveview

Phoenix Framework with LiveView on the BEAM

development30

ecto-patterns

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

testing30

session-compression

AI session compression techniques for managing multi-turn conversations efficiently through summarization, embedding-based retrieval, and intelligent context management.

testing30

local-llm-ops

Local LLM operations with Ollama on Apple Silicon, including setup, model pulls, chat launchers, benchmarks, and diagnostics.

data-ai30

example-framework-skill

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

development30

vector-search-workflows

Vector search indexing and querying workflows using MCP Vector Search, including setup, reindexing, auto-index strategies, and MCP integration.

tools30

phoenix-ops

Phoenix operations and deployment: releases, runtime configuration, clustering, libcluster, telemetry/logging, secrets, assets, background jobs, and production hardening on the BEAM.

devops30

langgraph

LangGraph framework for building stateful, multi-agent AI applications with cyclical workflows, human-in-the-loop patterns, and persistent checkpointing.

tools30

anthropic-sdk

Official Anthropic SDK for Claude AI with chat, streaming, function calling, and vision capabilities

development30

phoenix-api-channels

Phoenix controllers, JSON APIs, Channels, and Presence on the BEAM

development30

golang-cli-cobra-viper

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

tools30

golang-database-patterns

Go database integration patterns using sqlx, pgx, and migration tools like golang-migrate

tools30

golang-observability-opentelemetry

Instrumenting Go applications with OpenTelemetry for distributed tracing, Prometheus for metrics, and structured logging with slog

development30

mcp-protocol-builder

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

tools30

netlify-deployment-platform

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

devops30

digitalocean-storage

DigitalOcean storage services including Spaces object storage, Volumes block storage, NFS, Snapshots, and Backups. Use when selecting or managing storage for DigitalOcean workloads.

data-ai30

digitalocean-containers-images

DigitalOcean containers and images including Container Registry, preconfigured images, and custom images. Use when building, storing, or deploying container images or Droplet images on DigitalOcean.

development30

golang-testing-strategies

Comprehensive Go testing strategies including table-driven tests, testify assertions, gomock interface mocking, benchmark testing, and CI/CD integration

development30

vite-build-tool

Vite lightning-fast build tool with instant HMR, ESM-first architecture, and zero-config setup for modern web development

tools30

hono-cloudflare

Hono on Cloudflare Workers - bindings, KV, D1, R2, Durable Objects, and edge deployment patterns

devops30

hono-jsx

Hono JSX - server-side rendering, streaming, async components, and HTML generation patterns

development30

hono-rpc

Hono RPC - end-to-end type-safe API client generation with hc client and TypeScript inference

tools30

hono-validation

Hono request validation with Zod, TypeBox, Valibot - type-safe input validation for JSON, forms, query params, and headers

databases30

flexlayout-react

FlexLayout for React - Advanced docking layout manager with drag-and-drop, tabs, splitters, and complex window management

development30

svelte

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

development30

biome

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

tools30

nextjs-core

Core Next.js patterns for App Router development including Server Components, Server Actions, route handlers, data fetching, and caching strategies

development30

nextjs-v16

Next.js 16 migration guide (async request APIs, "use cache", Turbopack)

development30

espocrm-development

Comprehensive guide for developing on EspoCRM - metadata-driven CRM with service layer architecture

development30

wordpress-block-editor-fse

Modern WordPress block development and Full Site Editing with theme.json, block themes, and custom blocks for WordPress 6.7+

development30

wordpress-security-validation

Security-first WordPress development with nonces, sanitization, validation, and escaping to prevent XSS, CSRF, and SQL injection vulnerabilities.

development30

better-auth-integrations

Better Auth framework integrations for TypeScript. Use when wiring route handlers in Next.js, SvelteKit, Remix, Express, Hono, or other web frameworks.

development30

digitalocean-compute

DigitalOcean compute services covering Droplets, App Platform, Functions, Kubernetes (DOKS), GPU Droplets, and Bare Metal GPUs. Use when selecting or provisioning compute for applications, containers, or serverless workloads.

devops30

digitalocean-teams

DigitalOcean Teams and Organizations for billing, access control, roles, and membership. Use when managing team structure, permissions, and organization-wide billing on DigitalOcean.

tools30

digitalocean-management

DigitalOcean management services for monitoring, uptime checks, and resource organization with Projects. Use when setting up observability, alerts, and operational visibility on DigitalOcean.

testing30

digitalocean-managed-databases

DigitalOcean Managed Databases for PostgreSQL, MySQL, Redis, MongoDB, Kafka, OpenSearch, and Valkey. Use when provisioning, scaling, or operating managed database clusters on DigitalOcean.

development30

wordpress-advanced-architecture

Advanced WordPress development with REST API endpoints, WP-CLI commands, performance optimization, and caching strategies for scalable applications.

tools30

bad-example-skill

ANTI-PATTERN - Example showing violations of self-containment (DO NOT COPY)

data-ai30

better-auth-authentication

Better Auth authentication flows for TypeScript apps. Use when enabling email/password auth, configuring social providers, or implementing sign-up, sign-in, and verification flows.

development30

better-auth-core

Better Auth core setup for TypeScript apps. Use when configuring the Better Auth instance, wiring server handlers and client instances, working with sessions, or calling server-side auth APIs.

tools30

better-auth-plugins

Better Auth plugin system for TypeScript. Use when adding advanced auth features (2FA, magic link, passkey, username, JWT, organizations) via server and client plugins.

tools30

golang-concurrency-patterns

Go concurrency patterns for production services: context cancellation, errgroup, worker pools, bounded parallelism, fan-in/fan-out, and common race/deadlock pitfalls

development30

hono-core

Hono ultrafast web framework fundamentals - routing, context, handlers, and response patterns for multi-runtime deployment

development30

cypress

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

development30

digitalocean-agentic-cloud

DigitalOcean Gradient AI agentic cloud and AI platform for building, training, and deploying AI agents on GPU infrastructure with foundation models, knowledge bases, and agent routes. Use when planning or operating AI agents on DigitalOcean.

development30

digitalocean-networking

DigitalOcean networking services including VPC, firewalls, load balancers, reserved IPs, DNS, IPv6, and NAT gateway. Use when designing or securing network connectivity for DigitalOcean workloads.

content-media30

digitalocean-overview

DigitalOcean platform overview for account setup, projects, tooling (Control Panel, doctl, API, Terraform), and service selection across compute, storage, databases, networking, management, and teams. Use when onboarding or planning DigitalOcean usage.

tools30

bobmatnyc

Testing Anti-Patterns

code-production-process

opentelemetry

mpm-orchestration-demo

cargo-release

skill-creator

mcp-builder

internal-comms-3p-updates

env-manager

api-documentation

webapp-testing-patterns

Condition-Based Waiting

web-performance-optimization

code-review-standards

security-scanning

bug-fix

api-design-patterns

pre-merge

screenshot

gh-cli

test-driven-development

rust-quality-gate

kubernetes

terraform

artifacts-builder

test-quality-inspector

threat-modeling

vb-core

vercel-ai

vercel-deployments-builds

vercel-overview

vercel-teams-billing

mypy

flask

pydantic

drizzle-orm

git-worktrees

tanstack-query

zustand

vitest

headlessui

tailwind-css

graphql

docker

github-actions

homebrew-formula-maintenance

json-data-handling

vb6-legacy

Brainstorming Ideas Into Designs

software-patterns

stacked-prs

Requesting Code Review

sec-edgar-pipeline

django-framework

vercel-networking-domains

vercel-security-access

asyncio

vercel-functions-runtime

datadog-observability

vercel-observability

rust-desktop-applications

pytest

pyright-type-checker

clap

vercel-storage-data

celery

axum

tauri-event-system

trpc-type-safety

drizzle-migrations

turborepo

nodejs-backend-typescript

fastapi-local-dev

sqlalchemy-orm

jest-typescript

shadcn-ui

typescript-core

fastify

zod