Total 50,523 skills, Backend Development has 4135 skills
Showing 12 of 4135 skills
Upgrade Stylus smart contracts using OpenZeppelin proxy patterns on Arbitrum. Use when users need to: (1) make Stylus Rust contracts upgradeable with UUPS or Beacon proxies, (2) understand Stylus-specific proxy mechanics (logic_flag, WASM reactivation), (3) integrate UUPSUpgradeable with access control, (4) ensure storage compatibility across upgrades, or (5) test upgrade paths for Stylus contracts.
Python tooling conventions. Use when working on .py files, pyproject.toml, or Python projects. Enforce uv for package management, ty for type checking. NOT for JavaScript/TypeScript projects or shell scripts.
Secure API authentication with JWT, OAuth 2.0, API keys. Use for authentication systems, third-party integrations, service-to-service communication, or encountering token management, security headers, auth flow errors.
How to create and configure the Aptos client (Aptos, AptosConfig) in @aptos-labs/ts-sdk. Covers Network, fullnode/indexer/faucet URLs, singleton pattern, and Bun compatibility. Triggers on: 'Aptos client', 'AptosConfig', 'SDK client', 'client setup', 'new Aptos(', 'Network.TESTNET', 'Network.MAINNET'.
Best practices for Laravel queues including job structure, batching, chaining, middleware, retry strategies, and error handling.
Implement logging in B2C Commerce scripts using dw.system.Logger. Use when adding debug output, error tracking, or custom log files to server-side code. Covers getLogger, log categories, log levels (debug, info, warn, error, fatal), and custom named log files.
Enforce Vertical Slice Architecture (VSA) when building applications in any language (Go, .NET/C#, Java, Kotlin, TypeScript, Python, etc.) and any type (web API, mobile backend, CLI, event-driven). Organize code by feature/use-case instead of technical layers. Each feature is a self-contained vertical slice with a single entry point that receives the router/framework handle and its dependencies. Use when the user says "vertical slice architecture", "VSA", "organizar por feature", "feature-based architecture", "slice architecture", or when building a new app or feature and the project already follows VSA conventions. Also use when reviewing or refactoring code to align with VSA principles.
Routes .NET/C# requests to the correct domain skill and loads coding standards as baseline for all code paths. Determines whether the task needs API, UI, testing, devops, tooling, or debugging guidance based on prompt analysis and project signals, then invokes skills in the right order. Always invoked after [skill:using-dotnet] detects .NET intent. Do not use for deep API, UI, testing, devops, tooling, or debugging implementation guidance.
Detects and modernizes outdated Move V1 syntax, patterns, and APIs to Move V2+. Use when upgrading legacy contracts, migrating to modern syntax, or converting old patterns to current best practices. NOT for writing new contracts (use write-contracts) or fixing bugs.
C# 12 language features including records, pattern matching, nullable reference types, LINQ, async/await, and modern language patterns. USE WHEN: user mentions "C#", "C# records", "pattern matching", "LINQ", "async/await", "nullable reference types", "C# generics", "C# language features" DO NOT USE FOR: TypeScript - use `typescript`, Java - use Java skills, F# or VB.NET specific features
XAF Memory Leak Prevention - event handler symmetry (OnActivated/OnDeactivated/Dispose), ObjectSpace scoped disposal with using statement, batch processing large datasets, IDisposable pattern for controllers with List<IDisposable> tracker, WeakEventSubscription, static reference anti-patterns, CollectionSource disposal, Session/HttpContext/Application anti-patterns (WebForms), ObjectSpacePool, controller lifecycle tracking, NavigationMonitor, warning signs, diagnostic tools (dotMemory, PerfView, XAF Tracing). Use when diagnosing memory leaks, auditing controller disposal, reviewing ObjectSpace lifetime, or reviewing Session usage in DevExpress XAF applications.
DevExpress XAF (eXpressApp Framework) master index. Use this skill first when working with any XAF topic to find the right sub-skill. Covers Blazor and WinForms, EF Core and XPO, versions v24.2 and v25.1. Sub-skills: xaf-xpo-models, xaf-ef-models, xaf-controllers, xaf-editors, xaf-custom-editors, xaf-nonpersistent, xaf-security, xaf-multi-tenant, xaf-web-api, xaf-validation, xaf-reports, xaf-dashboards, xaf-office, xaf-blazor-ui, xaf-winforms-ui, xaf-conditional-appearance, xaf-deployment, xaf-memory-leaks.