Backend

Comprehensive skill for deploying applications to Vercel. Covers all deployment types: single projects, monorepos, static sites, Next.js, React, Python/FastAPI backends, serverless functions, and edge functions. Use when deploying to Vercel, configuring vercel.json, setting up environment variables, troubleshooting deployments, or understanding Vercel's architecture.

This skill generates an interactive infographic visualization using p5.js that read vis-network compatible JSON data. Use this skill when creating educational infographics with nodes, edges, and hover interactions where users can explore relationships between concepts. Each infographic displays shapes with labels, shows tooltips on hover, and displays detailed descriptions in a control panel below the drawing area. The nodes are placed in absolute coordinates. The output is not a responsive design.

Correlate AIP review findings with code locations in code-first API projects. Use when creating fix plans for code-generated OpenAPI specs, mapping spec paths to source code, or when user asks to find where an API endpoint is implemented. Works with NestJS, Fastify, and Express projects.

Creates JavaScript classes using Bun's Zig bindings generator (.classes.ts). Use when implementing new JS APIs in Zig with JSC integration.

Spring Boot Unit 테스트 작성. JUnit5+Mockito, domain 패키지별 구조, entity는 common/entity, service는 {domain}/service. 네이밍 test_{대상}_{시나리오}_{예상결과}. Entity 직접 반환 금지 (DTO만). Fail Fast - 모든 필드/타입/예외 엄격 검증, 예상외 결과는 실패 처리.

Generate CRUD API endpoints automatically. User doesn't see routes.Use when: features need backend logic.Triggers: internal use only.

Python backend developer for FastAPI, Django, Flask APIs with SQLAlchemy, Django ORM, Pydantic validation. Implements REST APIs, async operations, database integration, authentication, data processing with pandas/numpy, machine learning integration, background tasks with Celery, API documentation with OpenAPI/Swagger. Activates for Python, Python backend, FastAPI, Django, Flask, SQLAlchemy, Django ORM, Pydantic, async Python, asyncio, uvicorn, REST API Python, authentication Python, pandas, numpy, data processing, machine learning, ML API, Celery, Redis Python, PostgreSQL Python, MongoDB Python, type hints, Python typing.

Build production-ready FastAPI backends with async/await, SQLAlchemy, JWT authentication, Pydantic validation, and Celery background tasks. Use when creating REST APIs, implementing CRUD endpoints, setting up authentication, managing database sessions, or building backend services with FastAPI.

Generate REST API client code in multiple languages with error handling. Use when creating API client libraries or SDK code.

Modern Rust backend with Axum, SQLx, tokio + CI/CD automation.Use when: building Rust APIs, high-performance services, or needing build/test/lint/audit automation.Triggers: "axum", "rust backend", "rust api", "sqlx", "tokio", "cargo build","cargo test", "clippy", "rustfmt", "cargo-audit", "cross-compile", "rust ci","release build", "rust security", "shuttle", "actix".

Comprehensive Supabase expert with access to 2,616 official documentation files covering PostgreSQL database, authentication, real-time subscriptions, storage, edge functions, vector embeddings, and all platform features. Invoke when user mentions Supabase, PostgreSQL, database, auth, real-time, storage, edge functions, backend-as-a-service, or pgvector.

Write safe, reversible database migrations that support zero-downtime deployments. Use this skill when creating or modifying database migration files. When working on files in migrations/, alembic/, or any database schema change files. When adding new tables, columns, indexes, or constraints. When writing rollback/down methods for migrations. When considering deployment order for schema changes in high-availability systems.

Implement runtime validation and type safety using Zod schemas for Content Collections, API inputs, form data, and environment variables. Use this skill when validating user input, API requests, content schemas, or ensuring data integrity. When working on Content Collections schema definitions in src/content/config.ts, API route input validation with Zod, form validation (server-side and client-side), environment variable validation, component prop validation with runtime checks, URL and query parameter validation, request body and form data sanitization, TypeScript runtime type validation, or custom Zod refinements and transformations.

Master Go for concurrent systems, microservices, and cloud-native applications.

Guide for creating high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK).

This skill should be used when the user asks about "prompt_toolkit completion", "Completer", "WordCompleter", "FuzzyCompleter", "NestedCompleter", "PathCompleter", "auto-complete", "tab completion", "completion menu", "CompletionsMenu", or needs to implement auto-completion in prompt_toolkit applications.

Execution workflow preferences including no dev servers, read-only information gathering, real data over mocks, and proper error handling over fallbacks. Use when executing code, running servers, testing, or handling data.

Use when planning Rails features or breaking down work into PRs - enforces 2-5 file PRs, bug fix separation, and one-sentence scope test

Search, aggregate, and summarize AI and software industry news based on your interests

TypeScript type generation and synchronization between backend OpenAPI and frontend. Auto-generates types from /openapi.json using openapi-typescript. Critical after any API change.