Backend

Programmatically generates LimboAI Behavior Tree resources (.tres) by converting a high-level C++ AI analysis (from the cpp-code-analyst skill) into a fully structured LimboAI tree. This skill handles all node mappings, hierarchical structure generation, and Blackboard configuration, deterministically offloading a complex, 10,000-token-plus generation task from the LLM agent.

App Store Connect 자동화 스킬. JWT API/Playwright 하이브리드 방식으로 앱 정보, 빌드, TestFlight 배포, 스크린샷 업로드, 앱 제출 지원. "ASC", "TestFlight", "앱스토어" 키워드로 활성화.

Write effective, type-safe Kysely queries for PostgreSQL. This skill should be used when working in Node.js/TypeScript backends with Kysely installed, covering query patterns, migrations, type generation, and common pitfalls to avoid.

Manages server state with TanStack Query (React Query) including data fetching, caching, mutations, and optimistic updates. Use when fetching API data, caching responses, handling loading states, or syncing server state.

Expert assistant for keeping documentation synchronized with code changes in the KR92 Bible Voice project. Use when updating API docs, maintaining architecture diagrams, syncing README, updating CLAUDE.MD, or generating documentation from code.

Expert-level C# unit testing skill based on ISTQB standards and best practices. Use this skill when creating, reviewing, or refactoring unit tests for C# applications (.NET/ASP.NET Core). Applies test design techniques, coverage strategies, and quality assurance principles from ISTQB Foundation and Advanced levels.

Use when writing Go code to interact with Gitea API - automation, bots, integrations, migrations, or programmatic git forge operations

Enterprise AI security patterns - LLM vulnerabilities, prompt injection defense, guardrails, PII protection, and OWASP LLM Top 10 mitigations

Backend API authentication patterns with Clerk JWT middleware and route protection. Use when building REST APIs, GraphQL APIs, protecting backend routes, implementing JWT validation, setting up Express middleware, or when user mentions API authentication, backend security, JWT tokens, or protected endpoints.

Use this skill whenever the user wants to design, create, refactor, or standardize NestJS modules, services, and controllers in a TypeScript NestJS project, following clean architecture, DI best practices, and consistent API patterns.

PostgreSQL VPS database expert. Manages database creation, Prisma schemas, migrations, seeding. Auto-activates on keywords "database", "postgresql", "prisma", "db", "sql" or when backend with data storage needed.

Run a senior-level Java/Spring backend live-coding interview practice, guiding the user with Socratic prompts, strict code review (readability, edge cases, data structures), and staged hints without giving direct answers.

Node.js + Express + TypeScript patterns for FarmGate backend. Use when building API routes, services, middleware, or integrating with CAES authentication.

DEPRECATED - Use deploy-phoenix-client for production or deploy-rails-client for legacy Rails backend. This skill redirects to the appropriate deployment skill.

Server-side implementation and APIs

Guide for implementing Cloudflare Browser Rendering - a headless browser automation API for screenshots, PDFs, web scraping, and testing. Use when automating browsers, taking screenshots, generating PDFs, scraping dynamic content, extracting structured data, or testing web applications. Supports REST API, Workers Bindings (Puppeteer/Playwright), MCP servers, and AI-powered automation. (project)

Resolves ambiguous organism names to precise NCBI taxonomy IDs and scientific names, then recommends appropriate IWC (Intergalactic Workflow Commission) Galaxy workflows for analysis. Use this skill when users provide common names (like "malaria parasite", "E. coli", "mouse"), abbreviated names, or when you need to convert any organism reference to an exact scientific name for API queries. This skill handles disambiguation through conversation, validates taxonomy IDs via NCBI Taxonomy API, provides ENA FASTQ search capabilities, and ALWAYS recommends existing IWC workflows rather than producing custom scripts or analysis steps.

This skill provides comprehensive backend REST API integration for Asleep sleep tracking platform. Use this skill when building server-side applications, API proxies for mobile apps, webhook event handlers, cross-platform backends (React Native, Flutter), analytics dashboards, or multi-tenant sleep tracking systems. Covers authentication, user management, session retrieval, statistics, webhook integration, and production-ready patterns with code examples in Python, Node.js, and curl.

Expert knowledge of testing Node.js and Express applications including Jest configuration, Supertest for API testing, unit vs integration vs e2e testing, mocking external APIs, test organization, code coverage, CI/CD integration, and TDD practices. Use when writing tests, setting up testing framework, debugging test failures, or adding test coverage.

Use when writing Go code to interact with Hetzner Cloud API - automation, infrastructure provisioning, bots, integrations, or programmatic cloud operations