Databases

Go backend development assistant for building production-ready services with modern 2025 best practices. Supports project initialization, framework selection (Gin/Chi/Echo/Fiber), database layer (pgx/sqlc/GORM), and API development. Activated when users mention "Go", "Golang", "고랭", "백엔드", or need Go service development help.

Comprehensive Bun runtime expertise covering all major features.Use when working with Bun projects, migrating from Node.js, or leveraging Bun-specific APIs.Activates for: Bun.serve, Bun.file, bun:test, bun:sqlite, bun install, bun build,bunfig.toml, TypeScript in Bun, package manager operations, bundler configuration,and Node.js compatibility questions.

Automatically designs, initializes, implements, validates, and packages new skills from a single high-level request. Use when the user gives a short, possibly vague description like "社内Redshift向けのSQLヘルパースキル作って" and wants a complete, production-ready .skill file generated with minimal manual intervention.

SQL expert for Rice Data Portal queries using DuckDB SQL. ALWAYS use this skill when data is requested from the Rice stock market database (tickers, prices, fundamentals, insider trades, valuation metrics, etc.). When users request monthly/weekly returns OR momentum, this skill automatically calculates BOTH metrics from end-of-month or end-of-week prices. Returns are expressed as decimals (not percentages). This ensures proper SQL generation, filename prompting, and multi-format file saving. Do NOT use this skill for analyzing local CSV/Parquet files that are already saved.

Enrich a Github [DB] entry with GitHub API metadata (description, stars, language, cover image). Use when user wants to populate a GitHub repo entry with live metadata, enhance github entry, or add github info.

Master backend development, API design, server architecture, database integration, authentication, microservices, and production patterns. Includes Node.js, GraphQL, Spring Boot, ASP.NET Core, and PHP frameworks.

Detect N+1 query patterns in the codebase. Finds loops that contain database or API calls that should be batched. Works across all languages. Use when user asks to find performance issues or N+1 patterns.

React/TypeScript development guidelines. Suspense, lazy loading, useSuspenseQuery, features directory, MUI v7, TanStack Router, performance optimization. USE WHEN creating components, pages, features, data fetching, styling, routing, or frontend work.

[Extends backend-developer] Python FastAPI specialist. Use for FastAPI apps, async endpoints, Pydantic v2, SQLAlchemy async, dependency injection. Invoke alongside backend-developer for Python API projects.

Use for code review and quality feedback from both Codex and Gemini. Triggers on "council review code", "council code review", "have council review this", "get council feedback on code".

Datadog CLI for searching logs, querying metrics, tracing requests, and managing dashboards. Use this when debugging production issues or working with Datadog observability.

Analyze git diff to identify code changes requiring documentation updates. Categorizes changes (database/schema, API endpoints, components, configuration, authentication) and suggests relevant documentation files to review. Use when: (1) After making code changes, (2) Before committing significant changes, (3) When adding new features or modifying APIs, (4) During PR preparation, (5) When working with database schemas, API routes, components, or configuration files, (6) To ensure documentation stays synchronized with code changes, (7) For documentation sync and maintenance, or (8) For pre-commit documentation checks. Triggers: check docs, docs check, documentation check, update docs, sync documentation, what docs need updating, check if docs are up to date, after code changes, before committing.

Create interactive analytics dashboards with React components from drizzle-cube/client. Use when building dashboards, configuring portlets, setting up grid layouts, or creating analytics UIs with drizzle-cube React components.

AI-powered Telemetry Validator Agent that verifies instrumentation works in sandbox environments. Use when: (1) Validating OTel spans are emitted correctly, (2) Verifying correlation headers in Kafka messages, (3) Confirming OpenLineage events for data pipelines, (4) Generating validation evidence for merge approval. Triggers: "validate telemetry", "verify instrumentation", "check OTel spans", "validate correlation headers".

Add SQLite database to Flask or Sinatra app with beginner-friendly code examples and teaching comments

Master MongoDB find queries with filters, projections, sorting, and pagination. Learn query operators, comparison, logical operators, and real-world query patterns. Use when retrieving data from MongoDB collections.

Master MongoDB authentication methods including SCRAM, X.509 certificates, LDAP, and Kerberos. Learn user creation, role assignment, and securing MongoDB deployments.

Writes tests using Vitest and Testing Library. Use when creating unit tests, API tests, component tests, or mocking Firebase/external services. Includes test patterns, assertions, and coverage targets.

Work with MongoDB (document database, BSON documents, aggregation pipelines, Atlas cloud) and PostgreSQL (relational database, SQL queries, psql CLI, pgAdmin). Use when designing database schemas, writing queries and aggregations, optimizing indexes for performance, performing database migrations, configuring replication and sharding, implementing backup and restore strategies, managing database users and permissions, analyzing query performance, or administering production databases.

Interact with Metabase analytics and BI platform for querying dashboards, retrieving card results, and exporting data. Activated when users mention "Metabase", "대시보드", ask about analytics dashboards, or need BI data exports.