Databases

Use this skill for ANY database operations (schema changes, SQL, migrations, Supabase interactions). It contains EMBEDDED RULES to minimize token usage.

Configure and operate TinyDB for JSON-based document storage. Use when setting up databases, creating queries, or managing data persistence.

CloudBase platform knowledge and best practices. Use this skill for general CloudBase platform understanding, including storage, hosting, authentication, cloud functions, database permissions, and data models.

This skill enables honest, pressure-tested feedback on ideas, decisions, and proposals. Use this skill when prompted for an opinion on whether something is a good idea, should be done, or what to think about an approach.

Transform and export data using DuckDB SQL. Read CSV/Parquet/JSON/Excel/databases, apply SQL transformations (joins, aggregations, PIVOT/UNPIVOT, sampling), and optionally write results to files. Use when the user wants to: (1) Clean, filter, or transform data, (2) Join multiple data sources, (3) Convert between formats (CSV→Parquet, etc.), (4) Create partitioned datasets, (5) Sample large datasets, (6) Export query results. Prefer this over in-context reasoning for datasets with thousands of rows or complex transformations.

Analyze and optimize database schemas, identify performance issues, and suggest improvements. Use when working with database structure, indexes, or query performance.

Manages Supabase database schema, migrations, and queries for CookMode V2. Use this when the user needs to create/modify tables, write migrations, update RLS policies, or troubleshoot database issues.

This skill should be used when the user asks to "create an agent runtime server", "set up agent runtime backend", "configure Modal sandbox", "implement PersistenceAdapter", "start WebSocket server", "create REST API for agents", or needs to build a Node.js backend using @hhopkins/agent-runtime.

Use when creating Room entities for Kotlin/Android apps that mirror Django/PostgreSQL backend schemas. Enforces exact field alignment, prevents schema drift, validates type mappings. Critical for maintaining zero impedance mismatch between backend and mobile.

Core Convex development guidelines - functions, validators, schema, queries, mutations, and database patterns

Room ORM, SQLite, SharedPreferences, DataStore, encryption. Use when implementing data storage and database operations.

Create Architecture Decision Records (ADRs) documenting strategic technical decisions while acknowledging ecosystem E(t) constraints. Use when choosing cloud providers, languages, frameworks, databases, or architectural patterns.

Expert graphic, UI/UX designer for creating mockups, wireframes, and visual designs. Use when user needs help with designing interfaces, creating mockups, prototyping layouts, visual design feedback, design systems, brand identity, choosing colors/typography, or creating graphics. Triggers include "design," "mockup," "wireframe," "UI," "UX," "interface," "visual," "brand," or "prototype."

Use when designing, creating, or modifying Payload CMS collections in db.sb - covers field patterns, relationships, hooks, access control, and how collections map to Nouns in the business-as-code system

Store knowledge, entries, errors, and context in the worklog database

Repository 전문가. JpaRepository(Command: save/delete), QueryDslRepository(Query: 4개 메서드),AdminQueryDslRepository(Join 허용, DTO Projection), LockRepository(Pessimistic Lock).Entity 직접 반환 금지, N+1은 Application Layer에서 해결. JPQL 금지, Lazy Loading 의존 금지.

Install, configure, and validate local ClickHouse for gapless-crypto-clickhouse development and backtesting. Use when setting up local development environment, enabling offline mode, improving query performance for backtesting, or running E2E validation. Includes mise/Homebrew/apt installation, mode detection, connection validation, and E2E workflow scripts.

Multi-level caching strategies for LLM applications - semantic caching (Redis), prompt caching (Claude/OpenAI native), cache hierarchies, cost optimization, and Langfuse cost tracking with hierarchical trace rollup for 70-95% cost reduction

CLI for managing the Cortex email automation pipeline. Use this skill when the user wants to query emails, check queue status, trigger backfills, view classifications, or manage the email triage system. Triggers on keywords like "cortex", "email pipeline", "queue status", "classification", "backfill", "triage".

Ask the oracle (GPT-5.2 with deep reasoning) strategic technical questions. Use for architecture decisions, complex debugging, security analysis, or when you need a second expert opinion. Supports background execution for long-running queries.