Database
Database management and queries
altinity-expert-clickhouse-kafka
by Altinity
Diagnose ClickHouse Kafka engine health, consumer status, thread pool capacity, and consumption issues. Use for Kafka lag, consumer errors, and thread starvation.
altinity-expert-clickhouse-replication
by Altinity
Diagnose ClickHouse replication health, Keeper connectivity, replica lag, and queue issues. Use for replication lag and read-only replica problems.
convex
by bntvllnt
Build and operate Convex backends: functions (queries/mutations/actions/http actions), schemas, auth patterns, scheduling (cron/scheduled/workflows), file storage, testing, and debugging. Triggers: "convex", "query", "mutation", "action", "httpAction", "schema", "validator", "cron", "schedule", "workflow", "workpool", "ctx.db", "ctx.auth", "convex dev".
altinity-expert-clickhouse-ingestion
by Altinity
Diagnose ClickHouse INSERT performance, batch sizing, part creation patterns, and ingestion bottlenecks. Use for slow inserts and data pipeline issues.
altinity-expert-clickhouse-overview
by Altinity
Runs a quick overview of Clickhouse server health.
altinity-expert-clickhouse-grants
by Altinity
Diagnose and resolve ClickHouse grant and authentication errors, especially after upgrades. Use when queries fail with ACCESS_DENIED/NOT_ENOUGH_PRIVILEGES, AUTHENTICATION_FAILED/WRONG_PASSWORD/REQUIRED_PASSWORD, or ON CLUSTER privilege errors; when system.* or INFORMATION_SCHEMA access is denied; or when grant behavior changes after version upgrades.
altinity-expert-clickhouse-logs
by Altinity
Analyze ClickHouse system log table health including TTL configuration, disk usage, freshness, and cleanup. Use for system log issues and TTL configuration.
altinity-expert-clickhouse-index-analysis
by Altinity
Analyze whether ClickHouse indexes (PRIMARY KEY, ORDER BY, skipping indexes, projections) are being used effectively for actual query patterns. Use when investigating index effectiveness, ORDER BY key design, query-to-index alignment, or when queries scan more data than expected.
altinity-expert-clickhouse-schema
by Altinity
Analyze ClickHouse table structure, partitioning, ORDER BY keys, materialized views, and identify schema design anti-patterns. Use for table design issues and optimization.
altinity-expert-clickhouse-part-log
by Altinity
Diagnose ClickHouse issues by analyzing system.part_log (part creation, merges, mutations, downloads, removals, moves). Use for too many parts / micro-batch inserts, merge backlog or slow merges, mutation storms (ALTER DELETE/UPDATE), unusual replication DownloadPart churn, unexpected RemovePart spikes, or ZooKeeper/Keeper znode growth correlated with part activity.
altinity-expert-clickhouse-mutations
by Altinity
Track and diagnose ClickHouse ALTER UPDATE, ALTER DELETE, and other mutation operations. Use for stuck mutations and mutation performance issues.
altinity-expert-clickhouse-merges
by Altinity
Diagnose ClickHouse merge performance, part backlog, and 'too many parts' errors. Use for merge issues and part management problems.
altinity-expert-clickhouse-dictionaries
by Altinity
Analyze ClickHouse external dictionaries including configuration, memory usage, reload status, and performance. Use for dictionary issues and load failures.
altinity-expert-clickhouse-metrics
by Altinity
Real-time monitoring of ClickHouse metrics, events, and asynchronous metrics. Use for load average, connections, queue monitoring, and resource saturation.
altinity-expert-clickhouse-connection
by Altinity
Should be used when doing clickhouse analysis and diagnostics review before any altinity-expert-clickhouse skill to test clickhouse connection and set general rules
altinity-expert-clickhouse-caches
by Altinity
Analyze ClickHouse cache systems including mark cache, uncompressed cache, and query cache. Use for cache hit ratio issues and cache tuning.
gemini-prompting
by duyet
Prompt engineering guidance for Gemini (Google) model. Use when crafting prompts for Gemini to leverage system instructions, multimodal capabilities, ultra-long context, and strong reasoning features.
clickhouse-best-practices
by duyet
MUST USE when reviewing ClickHouse schemas, queries, or configurations. Contains 28 rules that MUST be checked before providing recommendations. Always read relevant rule files and cite specific rules in responses.
madai-investigator
by BenjaminG
Investigate MadAI/MadKudu support tickets from Jira or Zendesk. This skill should be used when analyzing ticket context, checking tenant health, querying knowledge bases, and producing structured investigation reports. Triggers on requests like "investigate this ticket", "look into Zendesk/Jira issue", "check tenant health", or "why is tenant X having issues".
backend-developer
by BenjaminG
Specialist for TypeScript backend development including Node.js servers, NestJS applications, APIs, databases (PostgreSQL, MongoDB, Redis), authentication, testing, deployment, server-side code, microservices, database queries, migrations, controllers, services, repositories, and middleware. Use for ANY work involving .ts backend files, server-side architecture, performance optimization, and backend security.
grey-haven-data-validation
by greyhaven-ai
"Comprehensive data validation using Pydantic v2 with data quality monitoring and schema alignment for PlanetScale PostgreSQL. Use when implementing API validation, database schema alignment, or data quality assurance. Triggers: 'validation', 'Pydantic', 'schema', 'data quality'."
grey-haven-code-style
by greyhaven-ai
"Apply Grey Haven Studio's TypeScript/React and Python/FastAPI coding standards from production templates. Use when writing code, reviewing PRs, fixing linting errors, formatting files, or when the user mentions 'code standards', 'Grey Haven style', 'linting', 'Prettier', 'ESLint', 'Ruff', 'formatting rules', or 'coding conventions'. Includes exact Prettier/ESLint/Ruff configs, naming conventions, project structure, and multi-tenant database patterns."
grey-haven-react-tanstack-testing
by greyhaven-ai
"Specialized testing for React applications using TanStack ecosystem (Query, Router, Table, Form) with Vite and Vitest. Use when testing React + TanStack apps, mocking server state, testing router, or validating query behavior. Triggers: 'TanStack testing', 'React Query testing', 'test TanStack', 'mock query', 'router test'."
sqlite-db
by bfollington
General guide for using the sqlite3 CLI to build composable knowledge databases. Use this skill when creating SQLite databases, designing schemas, querying data, managing relationships, or building new sqlite-based domain skills. Provides the foundational patterns that all specialized sqlite skills build upon.