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Databases & SQL

4,697 rows from 776 repositories

Schemas, queries and the migrations between them.

What Databases & SQL skills agree on

714 skill files read, by 609 of the 712 authors on this shelf whose files we hold, 2026-09-06

The middle one of the 105 measured here is ~1.7k tokens long, counted with cl100k_base

Counted by distinct author, so one author publishing three of these counts once. Where a claim sits in fewer files than authors, that is said: a claim held by forty authors across three files is one file people copied, not forty people who agreed. Near-identical wordings are grouped and the other wordings are shown, so the grouping is yours to check.

What they tell the agent to do

  1. Index all foreign key columns26 of 609also worded as Index every foreign key; Index every foreign key column
  2. Use cursor pagination instead of offset25 of 609 in 20 filesalso worded as Use keyset pagination instead of deep OFFSET; Use keyset pagination instead of offset pagination
  3. Use timestamptz for timestamps21 of 609also worded as use timestamptz for all timestamp columns; use TIMESTAMPTZ for all timestamps
  4. Specify columns instead of using select star20 of 609 in 10 filesalso worded as use explicit columns instead of select star; specify required columns instead of using select star
  5. Use parameterized queries for all database interactions20 of 609 in 19 filesalso worded as Use parameterized queries for SQL; parameterize all queries
  6. Use Enum for categorical data17 of 609 in 7 filesalso worded as use enum types for fixed categories
  7. Order by frequently filtered columns17 of 609 in 7 filesalso worded as order by frequently filtered columns first; Filter on ORDER BY prefix columns
  8. Batch data inserts17 of 609 in 7 filesalso worded as batch data inserts instead of individual inserts; batch data for bulk inserts
  9. Use expand-contract pattern for schema changes17 of 609also worded as use expand-migrate-contract for all schema changes; Implement schema changes using expand and contract patterns
  10. Use materialized views for real-time aggregations16 of 609 in 6 files
  11. Partition tables by time16 of 609 in 6 filesalso worded as partition tables by time using date or month
  12. Use smallest appropriate data types16 of 609 in 6 filesalso worded as use smallest appropriate data types for columns
  13. Use LowCardinality for repeated strings16 of 609 in 6 filesalso worded as use LowCardinality for repeated string columns
  14. Denormalize data to avoid joins16 of 609 in 6 filesalso worded as denormalize data to avoid excessive joins
  15. Monitor query performance using system logs16 of 609 in 6 filesalso worded as monitor query performance using system query log

What they tell it not to do

  1. Do not use SELECT * in production queries35 of 609 in 29 filesalso worded as Do not use SELECT * in production; Do not use SELECT *
  2. Do not use FLOAT or DOUBLE for money29 of 609 in 22 filesalso worded as avoid float for money; do not use float for monetary values
  3. Do not use string concatenation for SQL queries21 of 609 in 20 filesalso worded as do not use string concatenation for time values; Do not use string concatenation for SQL
  4. do not use select star19 of 609 in 9 filesalso worded as do not use select star in queries
  5. Do not use deep OFFSET pagination on large tables19 of 609 in 12 filesalso worded as do not use offset for pagination on large tables; Never use OFFSET/LIMIT for large datasets
  6. Do not use the final keyword16 of 609 in 6 filesalso worded as do not use final keyword in queries
  7. Do not use TIMESTAMP without time zone16 of 609 in 15 filesalso worded as Do not use TIMESTAMP without time zone; Do not use TIMESTAMP
  8. Do not hardcode credentials16 of 609 in 14 filesalso worded as do not hardcode keys; Do not hardcode API credentials in processor pipelines
  9. Do not perform individual inserts in a loop15 of 609 in 6 filesalso worded as do not perform individual small inserts; Do not use single inserts in a loop
  10. Do not edit committed migration files13 of 609 in 12 filesalso worded as never edit a migration that has already run; never edit already shipped migrations

What they expect to be installed

  1. psql50 of 609
  2. PostgreSQL47 of 609
  3. curl34 of 609 in 30 files
  4. EXPLAIN34 of 609 in 25 files
  5. Prisma28 of 609
  6. docker27 of 609
  7. EXPLAIN ANALYZE26 of 609 in 20 files
  8. sqlite325 of 609
  9. drizzle-kit25 of 609 in 20 files
  10. pg_stat_statements24 of 609 in 19 files

What they ask it to produce

  1. Database schema67 of 609also worded as Database schema definitions; Database schema design
  2. Migration scripts44 of 609also worded as SQL migration scripts; versioned migration scripts
  3. Optimized SQL queries42 of 609 in 38 filesalso worded as Optimized database queries; Optimized query patterns
  4. Migration files41 of 609also worded as SQL migration files; Migration SQL files
  5. Query results34 of 609also worded as SQL query results; Database query results
  6. Database migrations27 of 609 in 23 filesalso worded as Database migration files; Database migrations with indexes
  7. Optimized table schemas23 of 609 in 12 filesalso worded as Optimized database schema; Optimized database schema designs
  8. SQL queries22 of 609also worded as Database queries; SQL query

When Databases & SQL authors say to reach for one

The situations these authors wrote into their own files, counted out of the same 609 authors, with the skills that name each one

How Databases & SQL skills are built

4,007 skill directories by 654 authors, read from their repositories’ own file trees 2026-08-05

The middle bundle among those shipping files is 3 files, 20.7 KB beside SKILL.md

Counted by distinct author, same as above, so one author publishing forty template copies counts once. SKILL.md itself is not counted as a file, so a single-file skill is one where that file is the whole skill.

The shape

  1. SKILL.md is the whole skill242 of 654 authors, 1,970 of 4,007 skills
  2. files ship beside it412 of 654 authors, 2,037 of 4,007 skills
  3. executable scripts ship inside144 of 654 authors, 603 of 4,007 skills

The folders they converge on

  1. references/283 of 654 authors, 1,165 of 4,007 skills
  2. scripts/120 of 654 authors, 577 of 4,007 skills
  3. assets/48 of 654 authors, 166 of 4,007 skills
  4. evals/40 of 654 authors, 65 of 4,007 skills
  5. agents/37 of 654 authors, 73 of 4,007 skills
  6. rules/25 of 654 authors, 41 of 4,007 skills

  • DBHub

    bytebase/dbhub/io.github.bytebase/dbhub MCP server

    3,362★ repo

    Minimal, token-efficient Database MCP Server for PostgreSQL, MySQL, SQL Server, SQLite, MariaDB

  • Mongodb mcp server

    mongodb-js/mongodb-mcp-server/io.github.mongodb-js/mongodb-mcp-server MCP server

    1,099★ repo

    MongoDB Model Context Protocol Server

  • Postgres mcp

    pgEdge/pgedge-postgres-mcp/io.github.pgEdge/postgres-mcp MCP server

    211★ repo

    Enterprise PostgreSQL MCP server with NL queries, hybrid search (pgvector+BM25), and web UI

  • Query writing

    Idun-Group/idun-agent-platform/examples/tutorials/text-to-sql-deep-agent/skills/query-writing Skill

    198★ repo

    🟪 Open-source runtime that ships any LangGraph or Google ADK agent as a production-ready FastAPI service. Bundled , AG-UI copilotkit API, chat UI, 15+ guardrails, MCP, OpenTelemetry, OIDC. One pip install. Self-hosted, no vendor lock-in.

  • Add backend

    ahpxex/open-dashboard/.claude/skills/add-backend Skill

    119★ repo

    A skill catalogue of 36 copy-ready admin UI shapes an AI agent installs and composes into a real back-office. Built on TanStack Start, Drizzle + better-auth, shadcn + Tailwind v4.

  • Altimate code

    AltimateAI/data-engineering-skills/skills/altimate-code Skill

    118★ repo

    Skills related to Data Engineering Work for Claude Code

  • Dynoxide

    nubo-db/dynoxide/io.github.nubo-db/dynoxide MCP server

    83★ repo

    DynamoDB-compatible database engine in Rust on SQLite, with an MCP server for coding agents.

  • Goframe v2

    gogf/skills/skills/goframe-v2 Skill

    no license78★ repo

    GoFrame Agent Skills empowering AI to deeply understand GoFrame conventions and best practices, generating high-quality, production-ready code.

  • Craft cloud

    michtio/craftcms-claude-skills/skills/craft-cloud Skill

    70★ repo

    Production-ready Claude Code skills, agents, and project templates for Craft CMS 5 development

  • Django ORM Lens

    FROWNINGdev/django-orm-lens/io.github.FROWNINGdev/django-orm-lens MCP server

    64★ repo

    Django ORM static-analysis MCP. 10 tools: models, relations, migrations, indexes, signals, N+1.

  • Cosmosdb best practices

    AzureCosmosDB/cosmosdb-agent-kit/skills/cosmosdb-best-practices Skill

    50★ repo

    A collection of skills for AI coding agents working with Azure Cosmos DB. Skills are packaged instructions and scripts that extend agent capabilities.

  • Metabase ai assistant

    enessari/metabase-ai-assistant/io.github.enessari/metabase-ai-assistant MCP server

    48★ repo

    MCP Server for Metabase - 111 tools for SQL generation, dashboards & PostgreSQL

  • Microsoft Access Database

    unmateria/MCP-Access/io.github.unmateria/msaccess-database MCP server

    no license48★ repo

    Read and edit Microsoft Access databases (.accdb/.mdb) - forms, VBA, tables, queries. Windows.

  • Mcp

    prisma/mcp/io.prisma/mcp MCP server

    no license47★ repo

    MCP server for managing Prisma Postgres.

  • Linkedin growth

    Linked-API/linkedin-skills/linkedin-growth Skill

    42★ repo

    LinkedIn automation skills for AI agents – sales, social selling, data extraction, and more.

  • Dbmcp

    haymon-ai/dbmcp/ai.haymon/dbmcp MCP server

    30★ repo

    Database MCP server for MySQL, MariaDB, PostgreSQL & SQLite with PII redaction and write-prevention

  • Gnosis MCP

    nicholasglazer/gnosis-mcp/io.github.nicholasglazer/gnosis MCP server

    27★ repo

    Zero-config MCP server for searchable documentation. SQLite or PostgreSQL.

  • MCP Local WP

    verygoodplugins/mcp-local-wp/io.github.verygoodplugins/mcp-local-wp MCP server

    no license27★ repo

    WordPress database access via Local by Flywheel. Execute read-only MySQL queries and inspect schema.

  • PostgreSQL performance Tuner MCP Server

    isdaniel/pgtuner_mcp/io.github.isdaniel/pgtuner_mcp MCP server

    25★ repo

    provides AI-powered PostgreSQL performance tuning capabilities.

  • Agami connect

    AgamiAI/agami-core/plugins/agami/skills/agami-connect Skill

    no license22★ repo

    The trust layer between AI and your data. Turns your database schema - messy joins, undocumented tables, into a governed semantic model so AI answers with correct SQL and a receipt on every answer. Run it locally, or self-host a shared team server with Docker.

  • Explore

    exmergo/dex/skills/explore Skill

    21★ repo

    Dex is the agent-native analytics engineering toolkit. Point it at your warehouse and your dbt project. It learns the landscape, authors your transformations, and tells you exactly what to fix when the schema drifts. Built for analytics engineers and data engineers who want more out of their coding agent.

  • MCP Database Server

    Souhar-dya/mcp-db-server/io.github.Souhar-dya/mcp-db-server MCP server

    no license19★ repo

    MCP server for SQLite, PostgreSQL, and MySQL with natural language to SQL and direct SQL tooling.

  • Engram server

    jamjet-labs/jamjet/io.github.jamjet-labs/engram-server MCP server

    19★ repo

    Durable memory for AI agents: fact extraction, hybrid retrieval, temporal graph. SQLite/Postgres.

  • Mcp sqlite tools

    spences10/mcp-sqlite-tools/io.github.spences10/mcp-sqlite-tools MCP server

    19★ repo

    MCP server for local SQLite database operations

  • Powersync

    powersync-ja/agent-skills/skills/powersync Skill

    17★ repo

    Official agent skills for PowerSync

  • Golang best practices skill

    saifoelloh/golang-best-practices-skill Skill

    15★

    Production-ready Go code review skill for AI agents based on authoritative sources

  • Aurelius mapping

    tmssoftware/skills/skills/aurelius-mapping Skill

    no license14★ repo

    Official collection of agent skills from TMS Software

  • PostgreSQL MCP Server

    neverinfamous/postgresql-mcp/io.github.neverinfamous/postgres-mcp MCP server

    12★ repo

    PostgreSQL MCP server with 203 tools, connection pooling, HTTP/SSE, OAuth 2.1, and tool filtering

  • PostgreSQL MCP Server

    neverinfamous/postgres-mcp/io.github.neverinfamous/postgres-mcp-server MCP server

    12★ repo

    Enterprise PostgreSQL MCP server with 63 tools, 10 resources, 10 prompts for AI-native operations

  • Drift canary

    HetCreep/CoalMine/plugin/skills/drift-canary Skill

    11★ repo

    Nine quality-canary skills for AI coding agents - code health, world-class rule completeness, grounding, supply chain, resilience, drift & more - plus the auto-cadence hooks that run them unprompted at session start and session end. Cross-agent, consent-gated, token-lean.

  • Zotero bridge

    Combjellyshen/ZoteroBridge/io.github.Combjellyshen/zotero-bridge MCP server

    10★ repo

    MCP Server for Zotero SQLite Database - collection, tagging, PDF reading and more.

  • db-mcp (SQLite MCP Server)

    neverinfamous/db-mcp/io.github.neverinfamous/db-mcp MCP server

    10★ repo

    SQLite MCP server with OAuth 2.1, HTTP/SSE, 122 tools, and smart tool filtering

  • Database

    yamanidev/claude-code-configuration/skills/database Skill

    9★ repo

    My personal Claude Code configuration.

  • Database analyzer skill

    netresearch/composer-agent-skill-plugin/examples/database-analyzer-skill Skill

    9★ repo

    Composer plugin enabling universal Agent Skill distribution and management for PHP projects

  • DBeast PostgreSQL MCP

    snss10/DBeast/io.github.snss10/dbeast MCP server

    9★ repo

    PostgreSQL MCP server for schema, query, health, security, and performance analysis.

  • Mysql mcp

    neverinfamous/mysql-mcp/io.github.neverinfamous/mysql-mcp MCP server

    8★ repo

    Enterprise-grade MySQL MCP Server with OAuth 2.0, 106 tools, and Docker deployment

  • Alibaba java coding guidelines skill

    ns3154/alibaba-java-coding-guidelines-skill Skill

    7★

    skill for applying Alibaba Java Coding Guidelines

  • Douyin video downloader

    chemny/douyin-video-downloader Skill

    7★

    本地优先的抖音视频、封面、直接音频和用户主页作品列表采集下载 Skill。

  • Read only local mysql mcp server

    hovecapital/read-only-local-mysql-mcp-server/capital.hove/read-only-local-mysql-mcp-server MCP server

    7★ repo

    MCP server for read-only MySQL database queries in Claude Desktop

  • Microsoft SQL Server

    alyiox/mcp-mssql/io.github.alyiox/mcp-mssql MCP server

    7★ repo

    Read-only MCP for Microsoft SQL Server: metadata discovery, parameterized SELECT, plans.

  • Adb mysql

    northseadl/norix-skills/adb-mysql Skill

    no license6★ repo

    即插即用的 AI Agent 技能集合 — 飞书集成 · Mermaid 图表 · Codex 编排 · 前端设计规格

  • DB Connect MCP

    yugui923/db-connect-mcp/io.github.yugui923/db-connect-mcp MCP server

    6★ repo

    Multi-database MCP server for PostgreSQL, MySQL, and ClickHouse

  • Sql revision

    StringNLPLAB/FlexSQL/claude_harness/.claude/skills/sql-revision Skill

    no license5★ repo

    FlexSQL: Flexible Exploration and Execution Make Better Text-to-SQL Agents

  • Supastarter nextjs skill

    OscarDRT/supastarter-nextjs-skill/supastarter-nextjs-skill Skill

    5★ repo

    Agent Skills–compliant skill for supastarter.

  • Fly io

    usetemi/skills/skills/fly-io Skill

    5★ repo

    Open-source agent skills for Claude Code, Claude Cowork, Codex, Cursor, and Gemini CLI. Connect AI agents to Google Analytics, Search Console, and Drive. From Temi (usetemi.com).

  • Database normalization

    cookieMonsterDev/agents-skills/architecture-skills/database-normalization Skill

    5★ repo

    Agent Skills for coding agents

  • Database mcp libsql

    arifulislamat/database-mcp/io.github.arifulislamat/database-mcp-libsql MCP server

    5★ repo

    MCP server for libSQL/Turso, local or remote. Read-only by default, row caps, timeouts.

  • Postgres MCP

    edelciomolina/postgres-mcp/io.github.edelciomolina/postgres-mcp MCP server

    no license5★ repo

    PostgreSQL MCP wrapper with .env credential mapping, tool selection, and safe read-only defaults.

  • STRING Database MCP Server

    meringlab/string-mcp/org.string-db/string-mcp MCP server

    5★ repo

    Query STRING interactions, enrichment, annotations, homology, and PPI networks.

  • Setup backend stack

    WESTsyre21/setup-backend-stack Skill

    4★

    This skill bootstraps a local Node.js backend development stack with Docker, PostgreSQL, and an ORM (Prisma or Sequelize). It is designed to help the next user quickly install, configure, and run the skill in a Claude-compatible skill directory.

  • Azcli

    marcfargas/skills/azcli Skill

    4★ repo

    Reusable skills for AI coding agents (pi, Claude Code, Agent Skills standard)

  • Easy query orm

    wzszsw/easy-query-orm Skill

    no license4★

  • DataLink

    pilat/mcp-datalink/io.github.pilat/mcp-datalink MCP server

    4★ repo

    MCP server for secure database access (PostgreSQL, MySQL, SQLite)

  • SQL Sentinel MCP Server

    tkmawarire/sql-sentinel/io.github.tkmawarire/sql-sentinel MCP server

    4★ repo

    SQL Server monitoring and diagnostics for AI agents using Extended Events. No ODBC drivers required.

  • Sql architect

    ralvarezdev/ralvaskills/skills/databases/sql-architect Skill

    3★ repo

    My personal, ever-growing collection of AI skills for OpenCode and Claude Code. Enforces strict clean architecture and professional standards.

  • AdoMcp

    John0King/AdoMCP/io.github.John0King/adomcp MCP server

    3★ repo

    Database MCP server for schema discovery, comments, and SQL queries.

  • oraclemcp

    MuhDur/oraclemcp/io.github.MuhDur/oraclemcp MCP server

    3★ repo

    Engine-free, governed Oracle Database MCP server with a fail-closed SQL guard (unofficial).

  • Quarry

    Wangggym/quarry/io.github.Wangggym/quarry MCP server

    3★ repo

    Safety-railed database access for agents: Postgres, MySQL, Redis. Read-only by default.

  • Mimer mcp

    mimersql/mimer-mcp/io.github.mimersql/mimer-mcp MCP server

    3★ repo

    An MCP server with Mimer SQL Database Connectivity

  • Sqlite

    ofershap/mcp-server-sqlite/io.github.ofershap/sqlite MCP server

    3★ repo

    SQLite MCP — query databases, inspect schemas, explain queries, export data.

All 4,697 in the catalog