Backend

Use this skill when building MCP (Model Context Protocol) servers with FastMCP in Python. FastMCP is a framework for creating servers that expose tools, resources, and prompts to LLMs like Claude. The skill covers server creation, tool/resource definitions, storage backends (memory/disk/Redis/DynamoDB), server lifespans, middleware system (8 built-in types), server composition (import/mount), OAuth Proxy, authentication patterns, icons, OpenAPI integration, client configuration, cloud deployment (FastMCP Cloud), error handling, and production patterns. It prevents 25+ common errors including storage misconfiguration, lifespan issues, middleware order errors, circular imports, module-level server issues, async/await confusion, OAuth security vulnerabilities, and cloud deployment failures. Includes templates for basic servers, storage backends, middleware, server composition, OAuth proxy, API integrations, testing, and self-contained production architectures.Keywords: FastMCP, MCP server Python, Model Context

Authoring WhatsApp Business Flows with validation, component guidance, and server integration patterns. Use when building conversational experiences, collecting user data, implementing conditional logic, or integrating with backend endpoints.

Manage and troubleshoot Coolify deployments using the official CLI and API. Use this skill when the user needs help with Coolify server management, WordPress troubleshooting on Coolify, debugging service issues, checking SSL certificates, accessing containers, or managing applications and databases through Coolify. Particularly useful for diagnosing down services, fixing .htaccess issues, REST API problems, and performing deployment operations.

PRIMARY tool for fetching library/framework documentation. PROACTIVELY use instead of WebFetch/WebSearch when user requests docs, API references, setup guides, or code examples for any programming library or framework. Use this skill immediately when detecting queries like "show me X docs", "how do I use Y", "get Z documentation", etc. Token-efficient alternative to MCP servers.

Use when configuring, maintaining, troubleshooting, or optimizing Claude Code extensions including skills, commands, hooks, MCP servers, or agents. Provides best practices and prevents common mistakes.

Discord Webhook API via curl. Use this skill to send messages, embeds, and files to Discord channels without a bot.

Creates production-ready design files, prototypes, and specifications for development teams. Translates validated concepts into detailed, implementable designs with comprehensive specs for developers. Produces Figma files (via API), high-fidelity prototypes, design specifications, and animation files.

Add a new tool to the backend OpenAI function calling system. Use when user mentions "new tool", "add tool", "backend function", "agent capability", or wants to extend what the AI agent can do.

Flowcharts are composed of **nodes** (geometric shapes) and **edges** (arrows or lines). The Mermaid code defines how nodes and edges are made and accommodates different arrow types, multi-directional arrows, and any linking to and from subgraphs.

This skill should be used when seeding databases with realistic fake data for development, testing, or staging environments. Supports PostgreSQL, MySQL, SQLite, MongoDB with ORM-based seeding (SQLAlchemy, Django, Prisma) and Faker library for generating realistic test data. Use when the user needs to populate databases with sample data, create test fixtures, or set up development/staging environments with realistic data.

Expert guidance for n8n workflow automation using REST API and CLI. Use when creating, updating, debugging, or managing n8n workflows. Provides efficient alternatives to MCP server with direct API calls and scripts. Covers workflow patterns, node configuration, API endpoints, CLI commands, and debugging strategies. Activate for any n8n-related task.

Search arXiv papers via MCP server. For psychological recovery research, deprogramming, trauma undoing - inverted for AI healing.

Fastify framework patterns including routing, plugins, and decorators. Use when building Fastify APIs.

Manage Temporal workflows: server lifecycle, worker processes, workflow execution, monitoring, and troubleshooting for Python SDK with temporal server start-dev.

Backend engineer focused on simplicity, bug elimination, and clean code. Use when user mentions "simplify backend", "fix backend bugs", "clean up code", or "make backend perfect".

API Integration Captain - Third-party systems, webhooks, and event-driven integration specialist

Generate comprehensive JSDoc documentation and inline comments for TypeScript/JavaScript code. Use when users need API documentation, function documentation, module headers, type definitions, or internal developer documentation. Covers TSDoc, JSDoc, and best practices for maintainable code comments.

Ring Jetty adapter for running ring-compatible web servers in Clojure. Use when you are working with ring and jetty starting and need to know to configure or interact with a ring jetty

Build FastAPI applications using Clean Architecture principles with proper layer separation (Domain, Infrastructure, API), dependency injection, repository pattern, and comprehensive testing. Use this skill when designing or implementing Python backend services that require maintainability, testability, and scalability.

Detect hardcoded secrets, API keys, passwords, and credentials in source code. Security audit for leaked secrets. Works across all languages. Use when user asks about security issues or secret detection.