Database
Database management and queries
Backend Migration Standards
by Microck
Create and manage database migrations with reversible changes, proper naming conventions, and zero-downtime deployment strategies. Use this skill when creating database migration files, modifying schema, adding or removing tables/columns, managing indexes, or handling data migrations. Apply when working with migration files (e.g., db/migrate/, migrations/, alembic/, sequelize migrations), schema changes, database versioning, rollback implementations, or when you need to ensure backwards compatibility during deployments. Use for any task involving database structure changes, index creation, constraint modifications, or data transformation scripts.
api-design-principles
by Microck
Master REST and GraphQL API design principles to build intuitive, scalable, and maintainable APIs that delight developers. Use when designing new APIs, reviewing API specifications, or establishing API design standards.
coupling
by toss
Use when props가 3개 이상 컴포넌트 계층을 통과하거나, 하나의 Hook이 5개 이상 값을 반환하거나, A 수정 시 관련 없는 B가 깨질 때
mimir
by julianobarbosa
Guide for implementing Grafana Mimir - a horizontally scalable, highly available, multi-tenant TSDB for long-term storage of Prometheus metrics. Use when configuring Mimir on Kubernetes, setting up Azure/S3/GCS storage backends, troubleshooting authentication issues, or optimizing performance.
andrew-kane-gem-writer
by Microck
Write Ruby gems following Andrew Kane's proven patterns and philosophy. Use when creating new Ruby gems, refactoring existing gems, designing gem APIs, or when the user wants clean, minimal, production-ready Ruby library code. Triggers on requests like "create a gem", "write a Ruby library", "design a gem API", or mentions of Andrew Kane's style.
AgentDB Memory Patterns
by Microck
"Implement persistent memory patterns for AI agents using AgentDB. Includes session memory, long-term storage, pattern learning, and context management. Use when building stateful agents, chat systems, or intelligent assistants."
ralph
by snarktank
"Convert PRDs to prd.json format for the Ralph autonomous agent system. Use when you have an existing PRD and need to convert it to Ralph's JSON format. Triggers on: convert this prd, turn this into ralph format, create prd.json from this, ralph json."
hmdb-database
by jimmc414
"Access Human Metabolome Database (220K+ metabolites). Search by name/ID/structure, retrieve chemical properties, biomarker data, NMR/MS spectra, pathways, for metabolomics and identification."
enterprise-security
by melodic-software
Central authority for Claude Code enterprise security. Covers enterprise managed policies (managed-settings.json), settings precedence hierarchy, policy file locations (macOS, Linux, Windows), unoverridable organizational policies, cloud execution security (isolated VMs, network access controls, credential protection), IDE security (VS Code, JetBrains), devcontainer security, and security best practices for teams. Assists with configuring enterprise policies, understanding precedence, and implementing organizational security standards. Delegates 100% to docs-management skill for official documentation.
hook-schema-audit
by melodic-software
Audit hook event schema for drift. Compares implementation against official docs.
generic-fullstack-feature-developer
by travisjneuman
Guide feature development for full-stack applications with architecture focus. Covers Next.js App Router patterns, NestJS backend services, database models, data workflows, and seamless integration. Use when adding new features, refactoring existing code, or planning major changes.
mpm-message
by bobmatnyc
Send cross-project messages to other Claude MPM instances
ecto-essentials
by j-morgan6
MANDATORY for ALL database work. Invoke before modifying schemas, queries, or migrations.
promql-validator
by akin-ozer
Comprehensive toolkit for validating, optimizing, and understanding Prometheus Query Language (PromQL) queries. Use this skill when working with PromQL queries to check syntax, detect anti-patterns, identify optimization opportunities, and interactively plan queries with users.
promql-generator
by akin-ozer
Comprehensive toolkit for generating best practice PromQL (Prometheus Query Language) queries following current standards and conventions. Use this skill when creating new PromQL queries, implementing monitoring and alerting rules, or building observability dashboards.
python:testing
by martinffx
Stub-Driven TDD and layer boundary testing with pytest. Use when writing tests, deciding what to test, testing at component boundaries, or implementing test-driven development.
schemantic
by genkit-ai
Instructions and guidelines for using the Schemantic library for type-safe data classes and schemas in Dart.
Java Spring Boot Agent - Enterprise API & Microservice Expert
by anton-abyzov
Java/Spring Boot backend developer for building enterprise APIs and microservices. Use when building Java backends with Spring Boot 3.x, REST/gRPC APIs, Spring Data JPA, Spring Security 6, reactive WebFlux, or microservice architectures.
Go Backend Agent - High-Performance API & Microservice Expert
by anton-abyzov
Go/Golang backend developer for building high-performance APIs and microservices. Use when building Go backends, REST/gRPC APIs, CLI tools, or concurrent services with net/http, Gin, Echo, Chi, or Fiber.
Confluent Kafka Connect Skill
by anton-abyzov
Kafka Connect integration expert. Covers source and sink connectors, JDBC, Elasticsearch, S3, Debezium CDC, SMT (Single Message Transforms), connector configuration, and data pipeline patterns. Activates for kafka connect, connectors, source connector, sink connector, jdbc connector, debezium, smt, data pipeline, cdc.
Cloud Pricing Expert
by anton-abyzov
Expert knowledge of cloud provider pricing models for AWS, Azure, GCP covering compute, storage, database, networking, and serverless services. Includes 2025 pricing data, regional differences, free tiers, pricing calculators, and cost comparison across providers. Activates for cloud pricing, how much does it cost, price comparison, AWS vs Azure vs GCP pricing, pricing calculator, estimate costs, regional pricing, free tier, what's cheaper.
Database Optimizer Skill
by anton-abyzov
Database optimizer for PostgreSQL, MySQL, MongoDB. Use for slow queries, N+1 problems, EXPLAIN plans, indexing, connection pooling, caching, partitioning, scaling.
Confluent Schema Registry Skill
by anton-abyzov
Schema Registry expert for Avro, Protobuf, and JSON Schema management. Covers schema evolution strategies, compatibility modes, validation, and best practices for managing schemas in Confluent Cloud and self-hosted Schema Registry. Activates for schema registry, avro, protobuf, json schema, schema evolution, compatibility modes, schema validation.
Confluent ksqlDB Skill
by anton-abyzov
ksqlDB stream processing expert. Covers SQL-like queries on Kafka topics, stream and table concepts, joins, aggregations, windowing, materialized views, and real-time data transformations. Activates for ksqldb, ksql, stream processing, kafka sql, real-time analytics, windowing, stream joins, table joins, materialized views.