A token-lean MCP server for PostgreSQL, MySQL, MariaDB, SQL Server and SQLite with a read-only mode
MCP servers
An MCP server connects an agent to external data and tools over a single protocol: files, databases, APIs and services. This section lists servers with their transport, auth method and environment variables, an install command and an honest read on the risks.
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Found: 11
Russian stack
Official ClickHouse MCP server: the agent lists databases and tables and runs SQL, read-only by default
Official
Redis's official MCP server: strings, hashes, streams, JSON and vector search from your agent
Official YDB MCP server
YDB MCP
YDB's own official MCP server from the database's developers: parameterized SQL queries, execution plans, directory browsing, and a base for custom servers
Official
A lightweight database workspace with an MCP server: the agent reads the schema, runs queries and explores data in PostgreSQL, MySQL and more
MCP server that gives an agent access to MySQL: schema inspection and queries, read-only by default, writes behind flags
Official
Apache Doris's official read-only MCP server: catalogs, queries, cluster diagnostics, search and lineage
A Go MCP server for querying ClickHouse: schemas, SQL, tools generated from views, OAuth and Kubernetes deployment
Self-hosted DataLens OSS MCP server
DataLens OSS API и MCP
A translator from the cloud DataLens API to internal open-source DataLens 2.9.0 calls, plus a Streamable HTTP MCP server on top
Yandex Cloud Object Storage MCP server
yandex-cloude-mcp
An unofficial single-file MCP server for Yandex Object Storage: bucket listing, contents and file downloads via the AWS SDK
YDB MCP connection demo built on a notes app
Simple CLI Notes Application with YDB
An official YDB example: docker compose brings up a YDB database and the ydb-mcp server, and Cursor runs SQL through them right from chat
Frequently asked questions
What is an MCP server?
An MCP server connects an agent to external data and tools over a single protocol: files, databases, APIs and services. The agent calls its tools while it works.
How do I connect an MCP server to an agent?
The entry lists how to run it (npx, uvx, docker or a remote URL) and the environment variables. A config snippet goes into the agent settings.
Do I need a key or a paid account?
It depends on the server. Each entry states the auth method and requirements, including paid accounts, in the limitations block.