Backend

Use when Codex must inspect or update GitHub resources (issues, PRs, workflows) through the official remote GitHub MCP server.

A comprehensive skill that helps Claude review, analyze, and generate Ruby on Rails code according to established best practices.

This skill should be used when the user asks about "game rules", "scoring", "phases", "Attack token", "Exploit token", "Ghost token", "tile placement rules", "path matching", "movement rules", "winning conditions", "turn actions", "firewall breach", "path segments", "edge nodes", or discusses Zero-Day Attack game mechanics and design.

Comprehensive backend development guide for Node.js/Express/TypeScript microservices. Use when creating routes, controllers, services, repositories, middleware, or working with Express APIs, Prisma database access, Sentry error tracking, Zod validation, unifiedConfig, dependency injection, or async patterns. Covers layered architecture (routes → controllers → services → repositories), BaseController pattern, error handling, performance monitoring, testing strategies, and migration from legacy patterns.

This skill should be used when the user asks to "extract images from Uber Eats", "download menu images", "get pictures from restaurant website", "scrape food photos", "map images to menu items", or needs to extract and correlate images from delivery platforms for catalog creation.

Async/await patterns for FastAPI and SQLAlchemy. Use when working with async code, database sessions, concurrent operations, or debugging async issues in Python.

Use when editing or improving discussion sections that lack literature comparison, mechanistic interpretation, or honest limitations - provides synthesis patterns, positioning strategies, and future directions framework

全栈开发代码生成工具，支持项目脚手架、API接口、数据库模型、CRUD操作的快速生成。包含Python(FastAPI/Flask/Django)、JavaScript(Express/NestJS/React/Vue)、Go、Java等主流框架。适用于生成代码、创建项目、生成API、建表、数据库设计等场景。

Tavily AI search API integration via curl. Use this skill to perform live web search and RAG-style retrieval.

Plan backend observability using RED + USE + 4 Golden Signals + JTBD

Follow these patterns when designing guardrails validation contracts in OptAIC. Use for signal bounds, dataset schemas, portfolio constraints, PIT validation, and other domain-specific validation rules. Covers the "Law vs Police" architecture where Definitions contain contracts and the Engine enforces them.

Runs ML models in the browser and Node.js with Transformers.js and Hugging Face Inference API. Use when adding local inference, embeddings, or calling hosted models without GPU servers.

Use when encountering errors, investigating library APIs, troubleshooting issues, or needing up-to-date documentation. Prioritizes Context7 and WebSearch over outdated training data.

Type-safe database access with Prisma ORM for Node.js and TypeScript. Use when designing schemas, writing queries, running migrations, or optimizing database operations. Triggers on Prisma, database, ORM, migration, or SQL questions.

Use this skill when integrating Cloudflare Zero Trust Access authentication with Cloudflare Workers applications. Provides Hono middleware setup, manual JWT validation patterns, service token authentication, CORS handling with Access, and multi-tenant configurations. Prevents 8 common errors including CORS preflight blocking (45 min saved), key cache race conditions (20 min), missing JWT headers (30 min), and dev/prod team mismatches (15 min). Saves ~58% tokens (3,250 tokens) and 2.5 hours per implementation. Covers user authentication flows, service-to-service auth, geographic restrictions, role-based access control, and Access policy configuration.Keywords: Cloudflare Access, Zero Trust, Cloudflare Zero Trust Access, Access authentication, JWT validation, access jwt, service tokens, hono cloudflare access, hono-cloudflare-access middleware, workers authentication, protect worker routes, admin authentication, access policy, identity providers, azure ad access, google workspace access, okta access, github a

WHEN: Go project review, error handling, goroutines, interfaces, testingWHAT: Error handling patterns + Concurrency safety + Interface design + Testing + Idiomatic GoWHEN NOT: Go API frameworks → go-api-reviewer, Rust → rust-reviewer

Docker health checks and troubleshooting. Use when building Docker images, running containers, or debugging deployment issues. Validates backend API and worker services.

Define database models with clear naming, proper data types, validation, relationships, and constraints to ensure data integrity. Use this skill when creating or modifying ORM model files, database schema definitions, model class files, or entity files. Use this when defining model relationships (has-many, belongs-to, many-to-many), setting up database constraints (NOT NULL, UNIQUE, foreign keys), adding timestamps and indexes, implementing model-level validations, or choosing appropriate data types for fields. Use this when working on files in directories like models/, entities/, app/models/, or any file that defines database table structures and relationships.

Create FFI bindings between Lean 4 and C code. Use when working with foreign functions, native libraries, Metal, or system APIs.

Specialized agent for BarqNet backend development. Focuses on Go backend API development, PostgreSQL database management, authentication systems, JWT tokens, OpenVPN integration, and production-ready backend architecture. Use this skill when working on server-side code, API endpoints, database migrations, or backend infrastructure.