Total 50,530 skills, Backend Development has 4135 skills
Showing 12 of 4135 skills
NestJS reference skill: modules, controllers, providers, DTOs with class-validator, TypeORM/Prisma, guards, interceptors, pipes, queues (BullMQ), WebSockets, microservices, testing, OpenAPI, and CLI scaffolding. Use when the task touches NestJS application code and should follow the project's module-based architecture.
Use this when user provides a Yii2 codebase for analysis or migration planning. Provides 6-phase workflow: scan, capability extraction, dependency analysis, requirements extraction, semantic indexing, and migration roadmap. Apply when user mentions Yii2, PHP legacy modernization, or framework migration to NestJS
Spring Data Redis for caching, session storage, and data persistence. Covers RedisTemplate, @Cacheable, repositories, pub/sub, and distributed locks. USE WHEN: user mentions "spring data redis", "RedisTemplate", "@Cacheable", "Spring Boot caching", "@RedisHash", "spring session redis", "distributed lock Spring" DO NOT USE FOR: raw Redis commands - use `redis` instead, non-Spring Redis clients - use `redis` instead
Convert .NET projects and solutions (.sln, .slnx) to NuGet Central Package Management (CPM) using Directory.Packages.props. USE FOR: converting to CPM, centralizing or aligning NuGet package versions across multiple projects, inlining MSBuild version properties from Directory.Build.props into Directory.Packages.props, resolving version conflicts or mismatches across a solution or repository, updating or bumping or syncing package versions across projects. Also activate when packages are out of sync, drifting, or inconsistent -- even without the user mentioning CPM. Provides baseline build capture, version conflict resolution, build validation with binlog comparison, and a structured post-conversion report. DO NOT USE FOR: packages.config projects (must migrate to PackageReference first) or repositories that already have CPM fully enabled.
Answer Enable Banking API FAQs and apply best practices for ASPSP/PSU terminology, pricing and activation expectations, production compliance fields, restricted application account linking, ASPSP identifiers and BICs, beta integrations, user identification, balances, transaction history and continuation keys, PSU headers, rate limits, JWT handling, session validity, expired sessions, language selection, ASPSP_ERROR retries, iframe/WebView/CORS issues, payment statuses, bulk payments, TPP infrastructure, and sandbox credential lookup. Use when Codex needs to explain edge cases, design robust Enable Banking behavior, or troubleshoot recurring API and UX problems.
This skill should be used when the user asks to "add a LiveView page", "create a form", "handle real-time updates", "broadcast changes to users", "add a new route", "create an API endpoint", "fix this LiveView bug", "why is mount called twice?", or mentions handle_event, handle_info, handle_params, mount, channels, controllers, components, assigns, sockets, or PubSub. Essential for avoiding duplicate queries in mount.
Convert Phoenix app hardcoded text to use gettext with domain-based translations
Design a module's interface using parallel sub-agents producing radically different designs ("design it twice"). Compare on depth, simplicity, and efficiency. Embedded grill on the synthesized choice. Use when designing a new API, exploring interface options, or deciding the shape of a refactor before writing code.
Use these skills when you need to optimize storage, identify index issues, analyze table statistics, or manage autovacuum and tablespace configurations to maintain peak database health.
Use these skills when you need to explore the database schema, identify objects like views and triggers, and execute custom SQL queries to interact with your data.
WeChat Pay Medical Insurance Payment (Mobile Medical Insurance Payment 2.0) Access Solution, covering the full link of medical insurance and self-payment mixed order placement, order query, medical insurance refund notification, and medical insurance payment callback. It provides five capabilities: product selection/sample code/business quick reference/quality assessment/troubleshooting. Use when user mentions "Medical Insurance Payment", "Mobile Medical Insurance Payment 2.0", "Medical Insurance and Self-payment Mixed", "Medical Insurance Electronic Certificate", "Medical Insurance Mixed Payment Collection", "Medical Insurance Refund Notification", "Medical Insurance Registration", "Medical Insurance In-clinic Payment", "Medical Insurance Inpatient Settlement", "Medical Insurance Pharmacy Purchase", "Internet Hospital Medical Insurance", "Medical Insurance Designated Institution", or asks to "access medical insurance payment", "request sample code for medical insurance order placement interface", "troubleshoot medical insurance payment issues".
Build and modify EdgeSpark apps. Use when a project has edgespark.toml, the user mentions EdgeSpark, or work involves the edgespark CLI, server SDK types, storage/auth/database workflows, deployment, or @edgespark/web.