Authentication middleware for Express.js and Node.js applications. Use when building Express APIs that need JWT authentication, OAuth, or custom auth strategies. Provides 500+ authentication strategies. Choose Passport.js over Auth.js for Express backends, pure API servers, or when you need maximum control over auth flow.

Apply backend patterns for server architecture, database interactions, and API structure. Use when designing backend systems. Not for frontend logic or simple scripts.

PHP Developer Agent. Laravel 기반 백엔드 개발을 담당합니다. Eloquent ORM, Artisan, Queue, Sanctum 전문.

Build Retrieval-Augmented Generation (RAG) systems for LLM applications with vector databases and semantic search in FastAPI backends. Use when implementing knowledge-grounded AI, building document Q&A systems, or integrating LLMs with external knowledge bases.

**If implementing payment, billing, subscription, or financial transactions:**

backend-rust

Guide for integrating safety validation into new inference backends

Architect scalable backend services using layered architecture, dependency injection, middleware patterns, service classes, and separation of concerns. Use when building API services, implementing business logic layers, creating service classes, setting up middleware chains, implementing dependency injection, designing controller-service-repository patterns, handling cross-cutting concerns, creating domain models, implementing CQRS patterns, or establishing backend architecture standards.

Setting up an agent runtime backend involves:

Experto en FastAPI y gestión segura de credenciales multi-tenant para Platform AI Solutions.

Hono/Bun patterns and backend best practices for this project. Use when implementing API endpoints, WebSocket handlers, services, or server-side logic in packages/server.

Master the uv package manager for fast Python dependency management, virtual environments, and modern Python backend project workflows. Use when setting up Python projects, managing dependencies, or optimizing Python development workflows with uv.

TypeScript-first schema validation library. Use for ALL input validation in TypeScript projects — API inputs, form data, environment variables, config files. Essential companion for tRPC (required), React Hook Form, and any data boundary. Choose Zod when you need runtime validation with automatic TypeScript type inference.

พัฒนา Backend ด้วย Spring Boot, Node.js, Python อย่างมืออาชีพ

Design layered backgrounds that make PNG assets blend naturally. Use when hero assets float awkwardly on gradients, multiple images don't blend, or need seamless foreground/background integration. Outputs layer stacks, blend modes, edge-tinting strategies, and exact CSS.

Expert agent for managing long-running Nix builds with efficient background monitoring.

Expert in designing and implementing production-grade background job systems that handle long-running tasks without blocking API responses.

Implement background job processing systems with task queues, workers, scheduling, and retry mechanisms. Use when handling long-running tasks, sending emails, generating reports, and processing large datasets asynchronously.

Implement robust background job processing with dead letter queues, retries, and state machines. Use when building async workflows, scheduled tasks, or any work that shouldn't block the request/response cycle.

Run and manage long-running background tasks in the shell. Use for starting processes in background, monitoring output, listing active tasks, and killing processes. Essential for dev servers, watch modes, builds, and any non-blocking operations.

Expert guidance for managing tasks using the Backlog.md CLI tool. Use this skill when working with backlog tasks, creating or editing task files, managing acceptance criteria, tracking task progress, or understanding backlog workflows and best practices. Activates when users mention backlog, tasks, acceptance criteria, task management, or backlog commands.

Эксперт backlog refinement. Используй для grooming sessions, story estimation и prioritization.

Expert knowledge for working with Backlog.md task management. Use when managing tasks, organizing epics, handling dependencies, or tracking project progress. Automatically applies Backlog.md best practices.

從網路自動抓取礦業公司財務報表與營運揭露（產量、成本、資本支出），回算「礦業股/金屬本體比率」的基本面解釋與區間門檻（如 1.2/1.7），並輸出可重現的估值拆解（成本因子 / 槓桿因子 / 倍數因子 / 稀釋因子）。

Implement backup strategies, disaster recovery plans, and data restoration procedures for protecting critical infrastructure and data.

Create and manage etcd backups for OpenShift control plane disaster recovery, including automated backup procedures and verification.

Creates compressed ZIP backups of libraries directory. Backs up library.yaml, transcripts, and roughcuts (not video files). This skill can also be useful when you need to restore a library.

Create and manage database backups across environments

Create reliable disaster recovery procedures for your databases.

Backup and restore openclaw configuration, skills, commands, and settings. Sync across devices, version control with git, automate backups, and migrate to new machines.

System diagnostics, verification, and troubleshooting for Badger 2350. Use when checking firmware version, verifying installations, diagnosing hardware issues, troubleshooting errors, or performing system health checks on Badger 2350.

Hardware integration for Badger 2350 including GPIO, I2C sensors, SPI devices, and electronic components. Use when connecting external hardware, working with sensors, controlling LEDs, reading buttons, or interfacing with I2C/SPI devices on Badger 2350.

Complete step-by-step guide to go from zero to creating your first app for **MonaOS** on the Universe 2025 (Tufty) Badge. Perfect for absolute beginners!

Guide for balancing new Heart Rush content including talents, races, bloodmarks, and progression. Use when creating or modifying game mechanics to ensure they fit the existing power curve.

Manage small business HR with BambooHR's people management platform.

Expert-level banking systems, core banking, regulations, and banking technology

This skill should be used when building automated trading systems, implementing limit orders, or adding DCA/TWAP functionality. Covers limit orders, stop losses, DCA schedules, and TWAP execution.

Reusable client code and common files for Bankr API projects.

Resolve Bankr API errors and authentication issues.

This skill should be used when executing Bankr requests, submitting prompts to Bankr API, polling for job status, checking job progress, using Bankr MCP tools, or understanding the submit-poll-complete workflow pattern. Provides the core asynchronous job pattern for all Bankr API operations.

This skill should be used when building perpetual trading bots, implementing leverage functionality, or adding position management. Covers Avantis integration, long/short positions, and risk controls.

This skill should be used when building market data displays, implementing price feeds, or adding technical analysis. Covers prices, market caps, technical analysis, sentiment, and trending tokens.

This skill should be used when building NFT marketplace integrations, implementing collection browsing, or adding floor price tracking. Covers OpenSea integration, floor prices, and NFT purchases.

Deploy and manage ERC20 tokens using Clanker.

This skill should be used when building payment systems, implementing token transfers, or adding ENS/social handle resolution. Supports wallet addresses, ENS names, and social handles.

Cross-platform image compression skill. Converts images to WebP by default with PNG-to-PNG support. Uses system tools (sips, cwebp, ImageMagick) with Sharp fallback.

Analyzes base editing and prime editing outcomes including editing efficiency, bystander edits, and indel frequencies. Use when quantifying CRISPR base editor results, comparing ABE vs CBE efficiency, or assessing prime editing fidelity.

Build or migrate React/Next.js apps into Base/Coinbase Wallet Mini Apps using MiniKit + OnchainKit, while keeping thirdweb as the primary wallet/onboarding/payment integration; manage farcaster.json manifests, readiness, and gasless transactions.

Use for Base44 CLI operations and project initialization. Triggers: user wants to create/initialize a new Base44 project; user mentions CLI commands (npx base44, yarn base44, create, login, logout, whoami, deploy, entities push, site deploy, functions deploy); directory is empty or missing base44/config.jsonc; user says 'create a Base44 app/project', 'setup Base44', 'deploy to Base44', 'push entities'. This skill is the PREREQUISITE for base44-sdk - always use this first for new projects before building features.