Total 55,618 skills, Backend Development has 4395 skills
Showing 12 of 4395 skills
Validate and create x402 payment endpoint responses (HTTP 402 Payment Required). Use when the user asks to: (1) validate an x402 config or 402 response, (2) create/generate an x402 payment config, (3) build an HTTP 402 endpoint that returns payment requirements, (4) debug why an x402 config is invalid, (5) convert between x402 v1 and v2 formats, (6) check EVM/Solana addresses for x402, or (7) work with CAIP-2 network identifiers for payment configs. Triggers on keywords: x402, 402 payment, payment-required header, paywall config, CAIP-2 payment.
Implement flash messages for one-time notifications across redirects. Use for success/error messages after form submissions.
Use when working with JavaScript in WordPress plugins or themes. Covers wp_enqueue_script, wp_localize_script, wp_add_inline_script, jQuery in WordPress (noConflict mode, $.ajax), AJAX handlers (wp_ajax_, admin-ajax.php, wp_create_nonce, check_ajax_referer), wp.ajax, wp.apiFetch (wp-api-fetch), wp-util and wp.template (Underscore templates), Heartbeat API, script dependencies, defer/async loading strategies (WordPress 6.3+), wp_set_script_translations, and frontend-backend communication patterns.
Build FastAPI applications using Clean Architecture principles with proper layer separation (Domain, Infrastructure, API), dependency injection, repository pattern, and comprehensive testing. Use this skill when designing or implementing Python backend services that require maintainability, testability, and scalability.
Comprehensive Ruby development skill covering language fundamentals, object-oriented design patterns, error handling strategies, performance optimization, modern Ruby 3.x features (pattern matching, ractors, typed Ruby), testing patterns, metaprogramming, concurrency, and Rails-specific best practices. Use when writing Ruby code, refactoring, implementing design patterns, handling exceptions, optimizing performance, writing tests, or applying Ruby idioms and conventions.
Master Entity Framework Core patterns for ABP Framework including entity configuration, DbContext, migrations, relationships, and performance optimization. Use when: (1) configuring entities with Fluent API, (2) creating migrations, (3) designing relationships, (4) implementing repository patterns.
PostgreSQL database design, migration, and performance optimization best practices. This skill should be used when writing, reviewing, or refactoring database schemas, migrations, or query patterns. Triggers on tasks involving PostgreSQL databases, schema design, migration optimization, or data modeling.
Simplify and refine PHP/Laravel code for clarity and maintainability without changing behavior.
API design and implementation across REST, GraphQL, gRPC, and tRPC patterns. Use when building backend services, public APIs, or service-to-service communication. Covers REST frameworks (FastAPI, Axum, Gin, Hono), GraphQL libraries (Strawberry, async-graphql, gqlgen, Pothos), gRPC (Tonic, Connect-Go), tRPC for TypeScript, pagination strategies (cursor-based, offset-based), rate limiting, caching, versioning, and OpenAPI documentation generation. Includes frontend integration patterns for forms, tables, dashboards, and ai-chat skills.
Use when modifying existing Bknd schema. Covers renaming entities, renaming fields, changing field types, altering field constraints, handling destructive changes, data migration strategies, and the sync workflow.
Generate Go services following GO modular architechture conventions (Fx DI, OTEL tracing, interface-first design). Use when creating reusable business services in internal/modules/<module>/service/ - email senders, token generators, hashing utilities, template compilers, cache-backed lookups, or any domain service that encapsulates a single responsibility and is consumed by use cases or other services.
Complete Guide to Pipeline Variable Management, covering variable lifecycle (creation, initialization, update, storage, transfer, query) and variable field extension (field definition, type extension, scope, inheritance). Used when users develop variable functions, handle variable transfer, extend variable fields, or debug variable issues.