Backend

Design robust backend systems and APIs. Use when users ask to plan or implement services, data models, or integrations.

Post-deployment validation and health check scripts for validating HTTP endpoints, APIs, MCP servers, SSL/TLS certificates, and performance metrics. Use when deploying applications, validating deployments, testing endpoints, checking SSL certificates, running performance tests, or when user mentions health checks, deployment validation, endpoint testing, performance testing, or uptime monitoring.

Add MCP servers to Claude Code configuration at user level (~/.claude). Supports stdio, HTTP, and SSE transports with environment variable prompting. Use when "add mcp server", "install mcp", "configure mcp server", "new mcp", or "setup mcp server".

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

Private GKE cluster setup, Workload Identity, and Shielded Nodes with Binary Authorization using Terraform.

Use ONLY when user explicitly requests updating Node.js and pnpm versions - systematically updates package managers in all locations (frontend, backend, CI/CD) and verifies versions against official sources. Never use proactively.

Clean Code principles adapted for C#/.NET including naming, variables, functions, SOLID, error handling, and async patterns. Use when: (1) reviewing C# code, (2) refactoring for clarity, (3) writing new code, (4) code review feedback.

Monitor Laravel configuration file changes and automatically manage caches. Use immediately after .env modifications, config file edits, or when user reports "settings not reflecting" or "changes not applied". Prevents stale configuration issues.

Use CloudBase HTTP API to access CloudBase platform features (database, authentication, cloud functions, cloud hosting, cloud storage, AI) via HTTP protocol from backends or scripts that are not using SDKs.

Implement comprehensive input validation on both client and server sides with clear error messages, type checking, and sanitization to prevent security vulnerabilities. Use this skill when validating user input, implementing form validation, checking data types and formats, sanitizing input to prevent injection attacks (SQL, XSS, command injection), validating business rules, providing field-specific error messages, implementing server-side validation for all entry points (API endpoints, web forms, background jobs), using client-side validation for immediate user feedback, applying allowlists over blocklists, validating ranges and required fields, or ensuring consistent validation across the application. Apply this skill when handling any user input, building forms, creating API endpoints, or reviewing code for security and data integrity.

Ensure frontend API calls match backend endpoints and types align when generating full-stack code

Load GDD context for an issue (assessment + node resolution + pattern awareness)

Reportei marketing report generation API via curl. Use this skill to manage clients, reports, templates, integrations and webhooks for automated marketing analytics.

Advise on technology choices for new full-stack projects using the user's preferred stack (FastAPI + React + PostgreSQL). Use when starting a new project, discussing architecture decisions, choosing frameworks, scaffolding an application, or when the user asks what stack to use.

Validating external data from APIs, JSON parsing, user input, and any untrusted sources in TypeScript applications

Provides a comprehensive guide and templates for creating integration tests for FastAPI applications. Use this skill when you need to set up or write integration tests involving a database, authentication, file uploads, or error handling. It includes patterns for pytest fixtures, test client usage, and test data factories.

Master the Firestore CMS integration - content generation scripts, field mapping, and safe content modification patterns

Master Python asyncio, concurrent programming, and async/await patterns for high-performance FastAPI applications. Use when building async APIs, concurrent systems, or I/O-bound applications requiring non-blocking operations.

Surface tacit knowledge through Socratic questioning. Use when a user needs help articulating an idea they can sense but not yet express, or when deeper exploration of a concept would reveal unstated assumptions. Focuses on drawing out understanding rather than proposing solutions.

Systematic refactoring with small-step discipline. Use when user says 'refactor', 'clean up', 'restructure', 'extract', 'rename', 'simplify', or mentions code smells. Enforces one change → test → commit cycle. For structural improvements, NOT style/formatting (use /lint). NOT for adding features or fixing bugs.