Backend

Connecting StickerNest widgets via pipelines and ports. Use when the user asks about widget communication, connecting widgets, ports, inputs, outputs, pipelines, event routing, widget I/O, or making widgets talk to each other. Covers port definitions, type compatibility, event emission, and pipeline configuration.

Create, manage, and optimize LXC containers in Proxmox. Control container lifecycle, manage resources, and coordinate container deployments across nodes.

TypeScript and Node.js code samples for APC Mini MK2 development. Use when user needs "code example", "implementation", "easymidi", "@julusian/midi", "sample code", "how to implement", or wants working code for LED control, button handling, or MIDI communication.

Review overall codebase health, architecture, and patterns using Google's engineering principles. Takes optional focus area. Use when the user wants to review code quality, assess architecture, or says "/review-codebase" or "/review-codebase 'API layer'".

Implement Next.js 15 patterns for PhotoVault including Server Components, Client Components, Server Actions, and API routes. Use when working with app router, middleware, data fetching, caching, loading states, or debugging hydration errors. Includes Next.js 15 async params and caching changes.

This skill creates ephemeral pods cloned from existing deployments for interactive shell access with full application context. Use this when you need Rails console, database access, or debugging with env vars and secrets without affecting production pods.

Use when you need to fine-tune(ファインチューニング) and optimize LangGraph applications based on evaluation criteria. This skill performs iterative prompt optimization for LangGraph nodes without changing the graph structure.

Create, evaluate, and optimize GitHub Actions workflows and custom actions. Use when building CI/CD pipelines, creating workflow files, developing custom actions, troubleshooting workflow failures, performing security analysis, optimizing performance, or reviewing GitHub Actions best practices. Covers Ruby/Rails, TypeScript/Node.js, Heroku and Fly.io deployments.

Validate code for Zod v4 compatibility by detecting deprecated APIs and ensuring adherence to v4 patterns

CRITICAL development guide for Microsoft Agent Framework (MAF) in IPA Platform.MUST READ when working with:- Agents (ChatAgent, AgentThread)- Builders (ConcurrentBuilder, GroupChatBuilder, HandoffBuilder, MagenticBuilder)- Workflows (Executor, Edge, WorkflowExecutor)- Multi-agent orchestration- Any code in backend/src/integrations/agent_framework/builders/PREVENTS: Custom implementations instead of wrapping official API.REQUIRES: Import official classes, use Adapter pattern with self._builder = OfficialBuilder()

Create comprehensive Python test suites with pytest. Supports unit, integration, e2e, and user flow tests. Dual-mode testing for FastAPI (direct code + live API). Uses functional style (no test classes). File naming: <name>_test.py.

Manages Wire dependency injection providers in go-kratos microservices. Adds constructors to ProviderSets and regenerates Wire code. Use when integrating new components into dependency injection.

This skill provides comprehensive knowledge for working with OpenAI's Responses API, the unified stateful API for building agentic applications. It should be used when building AI agents that preserve reasoning across turns, integrating MCP servers for external tools, using built-in tools (Code Interpreter, File Search, Web Search, Image Generation), managing stateful conversations, implementing background processing, or migrating from Chat Completions API.Use when building agentic workflows, conversational AI with memory, tools-based applications, RAG systems, data analysis agents, or any application requiring OpenAI's reasoning models with persistent state. Covers both Node.js SDK and Cloudflare Workers implementations.Keywords: responses api, openai responses, stateful openai, openai mcp, code interpreter openai, file search openai, web search openai, image generation openai, reasoning preservation, agentic workflows, conversation state, background mode, chat completions migration, gpt-5, polymorphic o

Ring specification for HTTP server applications in Clojure. Use when working with: (1) Ring handlers (sync or async), (2) Ring request maps and their keys, (3) Ring response maps and their keys, (4) Ring middleware, (5) Ring adapters, (6) WebSocket responses and listeners, or when questions mention Ring spec, handler signatures, request/response map structure, or Ring protocols.

Router de intención para Obsidian en Codex CLI. Selecciona la skill más adecuada (o pide la mínima aclaración), aplica guardrails de lectura real y ejecuta el flujo correcto sin inflar AGENTS.md.

[Extends e2e-tester] BDD/Cucumber specialist. Use for Gherkin feature files, step definitions, Cucumber-JVM/JS, Spring/Playwright integration. Invoke alongside e2e-tester for BDD testing approach.

Create reversible, focused database migrations with proper naming, version control practices, and zero-downtime deployment considerations. Use this skill when creating or editing migration files in database/migrations/, when writing schema changes (creating/modifying tables, columns, indexes, foreign keys), when implementing migration rollback methods, when managing database version control, when adding or modifying indexes on large tables, or when separating schema changes from data migrations for safer deployments.

Rapid MVP validation and launch framework following Y Combinator and lean startup principles. Use when user wants to validate a business idea, launch an MVP, define product strategy, calculate unit economics, or needs structured approach to test product-market fit. Includes monetization models, metrics frameworks, and execution templates.

Master developer experience design, API design, and documentation. Learn to create smooth workflows and excellent tools for plugin developers and users.

Set up Python Flask development environment for beginners