Total 44,274 skills, Backend Development has 3834 skills
Showing 12 of 3834 skills
Advance one runnable thread by one bounded round from the minimal continuation entry, stopping on dirty interrupt files, pending proposals, or contract overreach.
Centrifugo real-time messaging server expert for WebSocket PUB/SUB, channel management, JWT authentication, event proxying, and horizontal scaling with Redis/NATS. Use when: centrifugo, centrifugal, real-time messaging, websocket pubsub, channel subscriptions, real-time notifications, live updates, presence, history recovery, server-sent events integration, real-time transport layer. Do not use for: general WebSocket programming without Centrifugo, Socket.IO, Pusher SDK, or other real-time frameworks.
Evolution API integration for WhatsApp messaging, instance management, webhooks, and chatbot orchestration. Use when: (1) Creating or managing WhatsApp instances via Evolution API, (2) Sending messages (text, media, audio, lists, buttons, reactions), (3) Configuring webhooks or event listeners, (4) Managing groups or contacts, (5) Integrating with Typebot, Chatwoot, Dify, or OpenAI through Evolution API. Triggers on: evolution-api, evolution api, whatsapp api, baileys, whatsapp integration, send whatsapp, whatsapp webhook.
Use this skill for any PostgreSQL database work — table design, indexing, data types, constraints, extensions (pgvector, PostGIS, TimescaleDB), search, and migrations. **Trigger when user asks to:** - Design or modify PostgreSQL tables, schemas, or data models - Choose data types, constraints, indexes, or partitioning strategies - Work with pgvector embeddings, semantic search, or RAG - Set up full-text search, hybrid search, or BM25 ranking - Use PostGIS for spatial/geographic data - Set up TimescaleDB hypertables for time-series data - Migrate tables to hypertables or evaluate migration candidates **Keywords:** PostgreSQL, Postgres, SQL, schema, table design, indexes, constraints, pgvector, PostGIS, TimescaleDB, hypertable, semantic search, hybrid search, BM25, time-series
Use when a user wants to build an application with ClickHouse, set up a local ClickHouse development environment, install ClickHouse, create a local server, create tables, or start developing with ClickHouse. Covers the full flow from zero to a working local ClickHouse setup.
Mocean API integration. Manage Organizations, Users, Filters. Use when the user wants to interact with Mocean API data.
Craft CMS 5 PHP coding standards and conventions. Triggers: writing PHP classes, PHPDoc blocks, @author, @since, @throws, section headers (=========), defineRules(), beforePrepare(), addSelect(), MemoizableArray, DateTimeHelper, Carbon, ECS check-cs, PHPStan, ddev craft make, Twig templates, form macros, translations Craft::t(), enum definitions, commit messages. Always load when writing, editing, or reviewing any PHP or Twig code in a Craft CMS plugin or module.
Go implementation guide for PMA-managed service and CLI projects. Covers project layout (cmd/internal), strict linting with golangci-lint v2, database access (sqlc + pgx or GORM), HTTP patterns (stdlib + Chi or Gin), layered config with koanf, structured logging with slog, OpenTelemetry observability, and CI quality gates.
Apply when designing or implementing asynchronous processing in VTEX IO services through events, workers, and background handlers. Covers event handler structure, idempotency, retry-safe processing, and moving expensive work out of request-response routes. Use for event-driven integrations, delayed processing, or background jobs in VTEX IO apps.
Check Custom SCAPI (B2C/SFCC/Demandware) endpoint registration status with the b2c cli. Always reference when using the CLI to check custom API endpoint status, verify custom API deployment, or debug "endpoint not found" errors. For creating new custom APIs, use b2c-custom-api-development skill instead.
Apply when designing or implementing how a VTEX IO backend app integrates with VTEX services or external APIs through @vtex/api and @vtex/clients. Covers choosing the correct client type, registering clients in IOClients, configuring InstanceOptions, and consuming integrations through ctx.clients. Use for custom client design, VTEX Core Commerce integrations, or reviewing backend code that should use VTEX IO client patterns instead of raw HTTP libraries.
Apply when choosing which VTEX IO authentication token should back a request from a backend app. Covers `ctx.authToken`, `ctx.storeUserAuthToken`, `ctx.adminUserAuthToken`, `authMethod`, and how requester context should determine the identity used by VTEX clients. Use for deciding which identity talks to VTEX endpoints in storefront-backed requests, Admin actions, or app-level integrations that should avoid hardcoded VTEX credentials.