Total 53,453 skills, Backend Development has 4315 skills
Showing 12 of 4315 skills
Use when performing bulk insert, update, or delete operations in Bknd. Covers createMany, updateMany, deleteMany, batch processing with progress, chunking large datasets, error handling strategies, and transaction-like patterns.
Version-aware guide for configuring and running Apollo Router for federated GraphQL supergraphs. Generates correct YAML for both Router v1.x and v2.x. Use this skill when: (1) setting up Apollo Router to run a supergraph, (2) configuring routing, headers, or CORS, (3) implementing custom plugins (Rhai scripts or coprocessors), (4) configuring telemetry (tracing, metrics, logging), (5) troubleshooting Router performance or connectivity issues.
CLI application patterns and best practices
Configures .NET Aspire 13.x orchestration, service discovery, and telemetry. Use when: Adding services to AppHost, configuring service defaults, setting up health checks, troubleshooting service discovery, or using Aspire CLI commands.
MSVC cl.exe and clang-cl skill for Windows C/C++ projects. Use when configuring Visual Studio builds, MSBuild, or clang-cl as a drop-in MSVC replacement. Covers translating GCC/Clang flags to MSVC equivalents, runtime library selection, Windows SDK setup, and diagnosing MSVC-specific errors. Activates on queries about cl.exe, clang-cl, /O flags, /MT vs /MD, PDB files, Windows ABI, or MSVC project settings.
Apply when implementing idempotency logic in payment connector code or handling duplicate payment requests. Covers paymentId as idempotency key, payment state machine transitions, retry semantics for cancellation and refund operations, and requestId handling. Use for preventing duplicate charges and ensuring correct Gateway retry behavior across Create Payment, Cancel, Capture, and Refund endpoints.
Implement a complete double-entry accounting system inside any SaaS app. Users enter transactions naturally (sales, expenses, inventory) while the system auto-posts journal entries under the hood. Produces both user-friendly reports and technical financial statements (Trial Balance, Balance Sheet, Income Statement, Cash Flow). Enforces 10000% accuracy with balanced entries and seamless void/reversal mechanics. Use when building any financial, ERP, POS, or inventory system that needs proper accounting.
Search, order, and manage phone numbers by location, features, and coverage.
Design the domain model for the Stitch SDK. Use when mapping MCP tools to domain classes and bindings in domain-map.json. This is Stage 2 of the generation pipeline.
Wire Credyt billing into your application code. Adds customer creation to registration, usage event tracking, balance checks, cost tracking, and billing portal links. Run after /credyt:billing-setup and /credyt:billing-verification. Use when the user wants to add Credyt to their app, integrate billing, send events from code, show balances, or add a billing page.
Comprehensive reference for all 38 Symfony framework components with PHP 8.3+ and Symfony 7.x patterns. Use when the user asks to implement, configure, or troubleshoot any Symfony component including HttpFoundation, HttpKernel, DependencyInjection, Form, Validator, Cache, Messenger, Console, EventDispatcher, Workflow, Serializer, Security, Routing, Twig, Doctrine integration, or any other Symfony component. Covers APIs, configuration, best practices, and common pitfalls.
This skill should be used when the user asks to "create a new FastAPI project", "setup a fastapi api", "new fastapi project", "scaffold a fastapi app", "initialize a fastapi backend", or "start a new python api". Scaffolds a complete production-ready FastAPI project with SQLAlchemy, PostgreSQL, JWT auth, Pydantic v2 settings, and uv package management.