Database
Database management and queries
cellxgene-census
by hxk622
Query the CELLxGENE Census (61M+ cells) programmatically. Use when you need expression data across tissues, diseases, or cell types from the largest curated single-cell atlas. Best for population-scale queries, reference atlas comparisons. For analyzing your own data use scanpy or scvi-tools.
prisma
by fellipeutaka
Prisma ORM — type-safe database toolkit for TypeScript/Node.js. Schema-first approach with Prisma Schema Language, auto-generated type-safe client, migrations via Prisma Migrate. Use when defining database models in schema.prisma, writing CRUD queries with Prisma Client, setting up relations (1-1, 1-n, m-n), running migrations (prisma migrate dev/deploy), configuring prisma.config.ts, using raw SQL/TypedSQL, creating client extensions, or working with PostgreSQL, MySQL, SQLite, SQL Server, MongoDB, CockroachDB.
wp-phpstan
by Automattic
"Use when configuring, running, or fixing PHPStan static analysis in WordPress projects (plugins/themes/sites): phpstan.neon setup, baselines, WordPress-specific typing, and handling third-party plugin classes."
better-auth-best-practices
by futuregerald
Skill for integrating Better Auth - the comprehensive TypeScript authentication framework.
architecture-decision-records
by futuregerald
Write and maintain Architecture Decision Records (ADRs) following best practices for technical decision documentation. Use when documenting significant technical decisions, reviewing past architectural choices, or establishing decision processes.
sql-query-conventions
by jcdendrite
Read-path SQL conventions for raw SQL, PostgREST, and SQL-shaped ORMs. TRIGGER when: writing or modifying a SELECT query, PostgREST .from()/.select() chain, list-returning ORM call, or query-shape / pagination design. DO NOT TRIGGER when: writing write-path (INSERT/UPDATE/DELETE), DDL-only migrations, test fixtures, or document/KV stores.
bun
by fellipeutaka
Bun runtime, package manager, bundler, and test runner. Use when running scripts with bun, managing packages, serving HTTP with Bun.serve, querying databases with Bun.sql/bun:sqlite/Bun.redis, shell scripting with $, using S3/file I/O, writing tests with bun:test, bundling or compiling to executable, or using any Bun-specific API (spawn, glob, semver, FFI, workers, plugins, HTMLRewriter).
elfeed
by markus1189
Search the user's Emacs elfeed RSS feed database containing curated feeds from Reddit, blogs, YouTube, GitHub releases, and newsletters. Use when the user asks about articles they've read, mentions RSS feeds or 'something I read', wants to research topics from their curated sources (programming, AI, security, NixOS, Emacs, etc.), or needs to triage unread items.
ai-partner-chat
by eze-is
基于用户画像和向量化笔记提供个性化对话。当用户需要个性化交流、上下文感知的回应，或希望 AI 记住并引用其之前的想法和笔记时使用。
tanstack-query
by fellipeutaka
TanStack Query (React Query) v5 best practices for data fetching, caching, mutations, and server state management. Use when building data-driven React applications, setting up query configurations, implementing mutations/optimistic updates, configuring caching strategies, integrating with SSR, or fixing v4→v5 migration errors.
turso-best-practices
by futuregerald
Turso and libSQL best practices for SQLite-compatible cloud database development with edge distribution, embedded replicas, and vector search.
etetoolkit
by hxk622
Phylogenetic tree toolkit (ETE). Tree manipulation (Newick/NHX), evolutionary event detection, orthology/paralogy, NCBI taxonomy, visualization (PDF/SVG), for phylogenomics.
sql-optimization-patterns
by futuregerald
Master SQL query optimization, indexing strategies, and EXPLAIN analysis to dramatically improve database performance and eliminate slow queries. Use when debugging slow queries, designing database schemas, or optimizing application performance.
testing-react-with-vitest
by bnadlerjr
Expert guidance for writing Vitest tests for React applications using React Testing Library. Covers component tests, custom hooks, utility tests, sociable testing philosophy, and the RTL query priority system. Favors sociable tests over heavy mocking, stubs over mocks. Use when working with .test.ts/.test.tsx files, vitest.config.ts, React Testing Library, @testing-library/user-event, @testing-library/jest-dom, renderHook, or when discussing React testing patterns, component testing, hook testing, or test organization.
creating-agent-skills
by bnadlerjr
Expert guidance for creating, writing, and refining Claude Code Skills. Use when working with SKILL.md files, authoring new skills, improving existing skills, or understanding skill structure and best practices.
agent-evaluator
by arisng
Deterministic custom subagent selection helper. Use when you need a reproducible, auditable decision on which custom subagents to activate for a user query (runs scripts/agent_evaluator.py).
developing-elixir
by bnadlerjr
Comprehensive Elixir/Phoenix development expertise covering Phoenix controllers, routing, channels; LiveView components and real-time features; Ecto schemas, queries, migrations; OTP patterns (GenServer, Supervisor); functional domain modeling; GraphQL with Absinthe; and ExUnit testing. Use when working with .ex/.exs files, mix projects, Phoenix applications, or when the user mentions Elixir, Phoenix, Ecto, LiveView, OTP, GenServer, Supervisor, Absinthe, or ExUnit. Also use for defmodule, mix.exs, umbrella apps, or iex sessions.
config-environments
by jcdendrite
Multi-environment config design, credential isolation, and secrets provisioning. TRIGGER when: designing or reviewing env-var schemes, branching-on-environment credential selection, or secret-isolation strategies. DO NOT TRIGGER when: a process legitimately holds both env values simultaneously (migrations, test harnesses) or single-environment apps.
string-database
by hxk622
Query STRING API for protein-protein interactions (59M proteins, 20B interactions). Network analysis, GO/KEGG enrichment, interaction discovery, 5000+ species, for systems biology.
plan-review
by jcdendrite
Review implementation plans before presenting to the user. A plan file in .claude/plans/ gates Write/Edit/MultiEdit/ExitPlanMode until this runs; triviality and user waivers do not release it. TRIGGER when: a plan is written or updated in .claude/plans/, or is about to be presented. DO NOT TRIGGER when: the plan lives outside .claude/plans/ (chat-level or /tmp drafts).
api-design-principles
by futuregerald
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.
drizzle-orm
by fellipeutaka
Drizzle ORM — type-safe, lightweight TypeScript ORM for SQL databases. Schema declaration, CRUD queries, joins, relations, migrations with Drizzle Kit, and database seeding. Use when defining database schemas, writing queries (select/insert/update/delete), setting up migrations, configuring drizzle.config.ts, establishing database connections, validating data with drizzle-zod/valibot, or working with PostgreSQL, MySQL, SQLite, Turso, Bun SQL, Neon, Supabase, PGlite, Expo SQLite, Cloudflare D1, PlanetScale, SingleStore, MSSQL, CockroachDB.
elysiajs
by fellipeutaka
Create backend with ElysiaJS, a type-safe, high-performance framework.
SQLite Database Expert
by futuregerald
Expert in SQLite, libSQL, and Turso database development for desktop and web applications with focus on SQL injection prevention, migrations, FTS search, edge deployments, and secure data handling