Backend and APIs: skills, plugins, subagents, slash commands and mcp servers

python-anti-patterns Seth Hobson skill A checklist skill for common Python mistakes. The agent runs it over your code before merge or while debugging. Claude Code CX Codex Cursor 13,278installs golang-graphql samber skill Builds and reviews GraphQL APIs in Go using gqlgen or graphql-go. It assists with schema design, resolver architecture, and query batching to prevent N+1 issues. Claude Code CX Codex Cursor +1 36,800installs golang-spf13-viper samber skill Configures the spf13/viper Go library with strict precedence, flag bindings, environment variables, and struct decoding. Claude Code CX Codex Cursor +1 36,700installs iii-sdk-reference iii-hq skill Reference for iii SDK APIs across Node.js, Python, Rust, Go, and browser. Quick lookup of correct syntax for worker registration, functions, triggers, observers, and channels on each platform. Claude Code CX Codex Cursor +1 4,000installs iii-core-primitives iii-hq skill Guides agents on iii engine primitives: functions, triggers, workers, and invocation modes across TypeScript, Python, and Rust. Claude Code CX Codex Cursor +1 4,000installs iii-error-handling iii-hq skill Skill teaches agents to read iii engine and SDK error codes, tell network failures from access denials, know when it is safe to retry. Use it when calling remote functions from Node, Python, Rust, or browser code. Claude Code CX Codex Cursor +1 4,000installs microservices-patterns Seth Hobson skill A practical guide to service boundaries, event-driven communication, data ownership, and resilience patterns for distributed systems. Claude Code CX Codex Cursor 13,176installs golang-uber-fx samber skill Skill for uber-go/fx — a dependency injection framework with lifecycle hooks, module system, and graceful shutdown. Useful if your project already uses fx or you're migrating to it for long-running services. Claude Code CX Codex Cursor +1 36,500installs langchain-architecture Seth Hobson skill This skill helps design LangChain 1.x and LangGraph applications with agents, memory, state, and tool calls. Use it for multi-step LLM workflows. Claude Code CX Codex Cursor 13,150installs php-pro https://github.com/Jeffallan skill Enforces PHP 8.3+ standards across Laravel and Symfony projects with strict typing, PHPStan level 9 checks, and automated Pest tests. Claude Code CX Codex Cursor +1 15,500installs protocol-reverse-engineering Dávid Balatoni skill This skill helps inspect network traffic, map protocol structures, and write protocol documentation. Use it for proprietary protocol analysis or network debugging. Claude Code CX Codex Cursor 12,701installs python-type-safety Seth Hobson skill Adds practical Python typing guidance for annotations, generics, protocols, type narrowing, and strict checks with mypy or pyright. Claude Code CX Codex Cursor 12,643installs python-pro VoltAgent Community subagent A subagent for type-safe Python code across web APIs, system utilities, and complex applications. Use it when async patterns and broad type coverage matter. Claude Code 11,689installs workflow-orchestration-patterns Seth Hobson skill This skill helps design long-running Temporal workflows with clear workflow and activity boundaries, state handling, and recovery rules for distributed systems. Claude Code CX Codex Cursor 12,053installs python-resilience Seth Hobson skill A Python skill for retries, timeouts, backoff, and transient failure handling. Use it when external services or network calls need bounded recovery. Claude Code CX Codex Cursor 11,755installs typescript-pro https://github.com/Jeffallan skill Implements advanced TypeScript type systems, branded types, and tRPC configurations. Use it when building type-first APIs or complex discriminated unions. Claude Code CX Codex Cursor +1 14,200installs python-pro Seth Hobson subagent A subagent for modern Python 3.12+ development, async code, testing, APIs, and performance work. Use it when a project needs deeper Python guidance. Claude Code CX Codex Cursor 11,689installs design-doc-mermaid SpillwaveSolutions skill Generates Mermaid diagrams and design documents from code or user prompts. Useful for GitHub wiki pages, architecture reviews, and sequence flows. Claude Code CX Codex Cursor +1 80,400installs python-configuration Seth Hobson skill This skill moves Python settings into environment variables and validates typed configuration. Use it for secrets and environment-specific behavior. Claude Code CX Codex Cursor 11,508installs developing-genkit-python official google skill A skill for building Genkit apps in Python: generation, streaming, tools, flows and agents. Useful when your agent fumbles imports or Genkit API calls. Claude Code Gemini CLI CX Codex 3,600installs developing-genkit-js official google skill This skill helps build and troubleshoot Genkit AI apps in Node.js and TypeScript. Use it for flows, agents, tools, and Genkit API errors. Claude Code Gemini CLI CX Codex 3,600installs oauth vercel-labs skill Configures OAuth providers to work with portless local development domains and resolves redirect URI mismatches. Claude Code CX Codex Cursor +1 3,000installs billing-automation Seth Hobson skill This skill helps build subscription billing, invoicing, and failed-payment recovery. Use it for SaaS products and services with recurring charges. Claude Code CX Codex Cursor 11,245installs python-background-jobs Seth Hobson skill This skill shows how to move long-running Python work out of request handling and into workers. Use it for queues, exports, notifications, and event-driven flows. Claude Code CX Codex Cursor 11,137installs flowstudio-power-automate-mcp official github skill Connects GitHub Copilot to Power Automate through FlowStudio MCP, with auth setup, tool discovery, and oversized-response handling. GitHub Copilot 4,200installs python-resource-management Seth Hobson skill This skill guides Python resource handling with context managers, cleanup, and streaming state. Use it when code opens files, database connections, or other resources. Claude Code CX Codex Cursor 11,000installs cqrs-implementation Seth Hobson skill This skill guides you through separating command and query handling and using distinct write and read models. Use it when implementing CQRS or an event-sourced system. Claude Code CX Codex Cursor 11,000installs paypal-integration Seth Hobson skill This skill covers PayPal checkout, subscriptions, refunds, and payment notifications. Use it when adding PayPal payments or recurring billing to an application. Claude Code CX Codex Cursor 10,900installs prisma-client-api prisma skill Complete Prisma Client API reference for database queries, CRUD operations, and filtering. Triggers on findMany, create, update, delete, and $transaction. Claude Code CX Codex Cursor +1 389,500installs prisma-cli prisma skill Prisma ORM 7 CLI reference for AI agents. Guides client generation, schema migrations, and local database workflows while preventing accidental data loss. Claude Code CX Codex Cursor +1 386,800installs hybrid-search-implementation Seth Hobson skill This skill combines vector and keyword search into one retrieval flow. Use it for RAG systems and search engines when one method misses important matches. Claude Code CX Codex Cursor 10,800installs event-store-design Seth Hobson skill This skill guides event store design for event-sourced systems and helps compare storage technologies. Use it when building event persistence infrastructure or choosing a store. Claude Code CX Codex Cursor 10,800installs mcp vercel-labs skill This skill helps build MCP servers that render interactive json-render UIs in Claude, ChatGPT, Cursor, and VS Code. Claude Code CX Codex Cursor +1 5,800installs distributed-tracing Seth Hobson skill This skill sets up distributed tracing with Jaeger and Tempo. Use it to inspect request paths and find latency or failure points across microservices. Claude Code CX Codex Cursor 10,700installs saga-orchestration Seth Hobson skill This skill designs sagas for distributed transactions and long-running workflows. Use it when 2PC is unavailable and failed steps need compensation. Claude Code CX Codex Cursor 10,700installs prisma-postgres prisma skill A deprecated compatibility name for prisma-postgres-setup. Use it only when explicitly invoked; new projects should select prisma-postgres-setup instead. Claude Code CX Codex Cursor +1 380,400installs projection-patterns Seth Hobson skill Build read models from event streams with guidance on projection types and replay. Useful for CQRS read sides, materialized views, and search indexes. Claude Code CX Codex Cursor 10,500installs prisma-driver-adapter-implementation prisma skill Reference guide for implementing SQL adapters in Prisma ORM 7. Required for transaction handling, savepoint support, value mapping, and database error preservation. Claude Code CX Codex Cursor +1 375,000installs prisma-postgres-setup prisma skill Provisions or connects a Prisma Postgres database and links it to your app. Useful for spinning up dev databases quickly or wiring connections in Vercel and v0. Claude Code CX Codex Cursor +1 374,900installs prisma-upgrade-v7 prisma skill Complete migration guide from Prisma ORM v6 to v7 with all critical changes: new generator, required driver adapters, ESM config, and client imports. Use when upgrading Prisma or hitting v7 errors. Claude Code CX Codex Cursor +1 374,800installs