Total 52,036 skills, Backend Development has 4220 skills
Showing 12 of 4220 skills
Kalshi is a regulated prediction market exchange. Use this skill to interact with the Kalshi API for market data, trading, portfolio management, WebSocket streaming, and historical data retrieval.
PostHog feature flags for Elixir applications
Low-level Go terminal primitives - cell-based rendering, input handling, screen management. Use when building custom Go terminal renderers, ultraviolet, cell buffers, or performance-critical TUI work below Bubble Tea's abstraction level.
Universal SQL performance optimization assistant for comprehensive query tuning, indexing strategies, and database performance analysis across all SQL databases (MySQL, PostgreSQL, SQL Server, Oracle). Provides execution plan analysis, pagination optimization, batch operations, and performance monitoring guidance.
Use when you need to design, review, or improve REST APIs with Quarkus REST (Jakarta REST) — including resource classes, HTTP methods, status codes, request/response DTOs, Bean Validation, exception mappers, OpenAPI with SmallRye, content negotiation, pagination, sorting and filtering, API versioning, idempotency (Idempotency-Key), optimistic concurrency (ETag / If-Match), HTTP caching (Cache-Control), API deprecation (Sunset / Deprecation headers), RFC 7807 Problem Details, ISO-8601 for time in contracts, and security-aware boundaries. Part of the skills-for-java project
Network programming patterns with Hyper, Tonic, and Tower. Use when building HTTP services, gRPC applications, implementing middleware, connection pooling, or health checks.
Azure SQL Database best practices skill for optimizing T-SQL code, database configuration, indexing strategies, and application patterns. Based on Microsoft SQL Assessment API, SSDT Code Analysis rules, Azure SQL Database performance guidance, and official Microsoft best practices. Use this skill when writing, reviewing, or refactoring code that interacts with Azure SQL Database.
Rapid Symfony admin panel development with EasyAdminBundle. Capabilities: CRUD generation, dashboard creation, entity management, form customization, menu configuration, field configuration, action customization, filters, permissions, batch actions, custom themes, file uploads, image handling, associations, submenus, custom queries, event listeners. Use for: admin panels, backend interfaces, content management, data administration, CRUD operations, user management, product catalogs, blog administration, e-commerce backends. Triggers: easyadmin, symfony admin, crud, admin panel, dashboard, backend, entity crud, admin interface, symfony backend, easyadmin, easyadmin bundle, admin generator, backend panel
Create FilamentPHP v4 actions with modals, confirmation, forms, and bulk operations
SMS and MMS deep-dive reference. Covers SMS-specific error codes, message filtering troubleshooting ("Messages Being Filtered or Blocked?" diagnostic checklist), MMS media support (US/CA/AU only), and SMS pumping indicators. For sending SMS, use twilio-send-message instead. Use this skill only when debugging SMS delivery issues or needing SMS-specific details not in the consolidated send skill.
SQLAlchemy Python SQL toolkit and ORM with powerful query builder, relationship mapping, and database migrations via Alembic
Transform slow database queries into lightning-fast operations through systematic optimization, proper indexing, and query plan analysis.