Total 44,202 skills, Backend Development has 3830 skills
Showing 12 of 3830 skills
EF Core, DbContext, AsNoTracking, query splitting.
Interprets MSBuild output, NuGet errors, analyzer warnings. Error codes, CI drift.
Builds high-perf network I/O. PipeReader/PipeWriter, backpressure, protocol parsers, Kestrel.
Versions HTTP APIs. Asp.Versioning.Http/Mvc, URL segment, header, query string, sunset.
Complete Convex development mastery — functions (queries, mutations, actions, HTTP actions), schema design, index optimization, argument/return validation, authentication, security patterns, error handling, file storage, scheduling, crons, aggregates, OCC handling, denormalization, TypeScript best practices, and production-ready code organization. The definitive Convex skill. Use when building any Convex backend: writing functions, designing schemas, optimizing queries, handling auth, adding real-time features, setting up webhooks, scheduling jobs, managing file uploads, or reviewing/fixing Convex code. Triggers on: convex, query, mutation, action, ctx.db, defineSchema, defineTable, v.id, v.string, v.object, withIndex, ConvexError, internalMutation, httpAction, ctx.scheduler, ctx.storage, OCC, convex best practices, convex functions, convex schema, convex performance, "how do I do X in Convex".
Builds .NET 10 file-based C# apps. Directives, CLI commands, csproj migration.
Implement Stripe Billing for subscriptions, recurring payments, invoicing, and usage-based pricing. Use when: (1) Creating subscription plans (flat, tiered, per-seat, usage-based), (2) Managing subscription lifecycle (trials, upgrades, downgrades, cancellations), (3) Generating and customizing invoices, (4) Implementing metered/usage-based billing, (5) Setting up customer portal for self-service, (6) Configuring dunning and revenue recovery, (7) Applying coupons and promotion codes. Triggers on: subscription, recurring billing, invoice, usage-based, metered billing, SaaS pricing, subscription plan, trial, dunning, proration, customer portal, coupon, promotion code, billing cycle.
Research how production Rails apps solve architectural problems using the Real World Rails repository. Use when the user wants to know how other apps handle something, find patterns, or compare approaches. Triggers on "rails patterns", "how do other apps", "real world rails", "research how apps do".
Postgres-backed observability and policy store for the skill system. Provides tables for policy profiles (effect allowlists), skill execution runs, and step-level events. Use when setting up the skill system database or querying execution history.
Explains how to define http servers with effect. Use only when a top-level server is, or needs to be written in effect.
Hexagonal architecture layering for Java services with strict boundaries. Trigger: When structuring Java apps by Domain/Application/Infrastructure, or refactoring toward clean architecture.
WMS NestJS module (倉儲管理 NestJS 模組). Use when working with warehouse management, inventory tracking (庫存追蹤), location management (儲位管理), stock transactions (庫存異動), batch management (批次管理), or warehouse maps (倉庫地圖). Covers LocationService, MaterialService, StockService, OrderService, WarehouseMapService. Keywords: WMS, warehouse, 倉儲, 庫存, 儲位, TypeORM, NestJS, inventory, batch, stock