Total 44,271 skills, Backend Development has 3834 skills
Showing 12 of 3834 skills
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.
Real-time systems expert for WebSockets, SSE, presence, and live synchronizationUse when "websocket, real-time updates, live collaboration, presence indicator, online status, live cursors, multiplayer, server-sent events, push notifications, collaborative editing, websocket, sse, realtime, presence, collaboration, live-updates, socket.io, pusher, ably, supabase-realtime" mentioned.
Use pgmicro — an in-process PostgreSQL reimplementation backed by SQLite-compatible storage, embeddable as a library or CLI
Database specialist for SQL, NoSQL, and vector database modeling, schema design, normalization, indexing, transactions, integrity, concurrency control, backup, capacity planning, data standards, anti-pattern review, and compliance-aware database design. Use for database, schema, ERD, table design, document model, vector index design, RAG retrieval architecture, migration, query tuning, glossary, capacity estimation, backup strategy, database anti-pattern remediation work, and ISO 27001, ISO 27002, or ISO 22301-aware database recommendations.
Use when designing, planning, implementing, or reviewing any non-trivial change — enforces stateless design, efficient resource usage, and architectural patterns that handle 10x-100x growth without redesign
Use when designing, planning, implementing, or reviewing any non-trivial change — enforces graceful degradation, proper error handling, retry strategies, and fault-tolerant patterns so systems stay up when things go wrong
Analyze Java project architecture at macro level - package structure, module boundaries, dependency direction, and layering. Use when user asks "review architecture", "check structure", "package organization", or when evaluating if a codebase follows clean architecture principles.
Java logging best practices with SLF4J, structured logging (JSON), and MDC for request tracing. Includes AI-friendly log formats for Claude Code debugging. Use when user asks about logging, debugging application flow, or analyzing logs.
Apply when scoping, reviewing, or documenting cross-cutting VTEX commerce architecture across storefront, IO, headless, marketplace, payments, or any other VTEX module. Grounds work in the Well-Architected Commerce framework—Technical Foundation (reliability, trust, integrity; security, infrastructure, compliance), Future-proof (innovation, simplicity, efficiency; scalable and adaptable solutions), and Operational Excellence (accuracy, accountability, data-driven improvement; process and customer experience). Routes implementation detail to product tracks (IO caching and paths, Master Data strategy, marketplace integrations). Use for solution design, architecture reviews, and RFP-level technical structure.
Review Express.js security audit patterns for middleware and routes. Use for auditing Helmet.js, CORS, body-parser limits, and auth middleware. Use proactively when reviewing Express.js apps. Examples: - user: "Secure my Express app" → add Helmet.js and disable x-powered-by - user: "Check Express CORS config" → verify origin allowlists and credentials - user: "Review Express auth middleware" → check route order and coverage - user: "Scan for Express path traversal" → verify path normalization and validation - user: "Audit Express session config" → check secure, httpOnly, and sameSite flags
JVM performance profiling with Java Flight Recorder (JFR), jcmd, and GC analysis. Use for identifying bottlenecks and memory issues. USE WHEN: user mentions "Java profiling", "JFR", "JVM performance", asks about "Java Flight Recorder", "jcmd", "heap dump", "GC tuning", "thread dump", "Java memory leak" DO NOT USE FOR: Node.js/Python profiling - use respective skills instead
Implement Windows Forms FolderBrowser dialog for folder selection. Use this when implementing folder selection dialogs, directory browsing, or folder path selection in applications. Covers assembly setup, dialog initialization, location/style configuration, callback events, and common browsing patterns.