Official
A visualization language for agents and an MCP server: neat charts from a simple semantic spec
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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Editors’ pick
A token-lean MCP server for PostgreSQL, MySQL, MariaDB, SQL Server and SQLite with a read-only mode
Official
The official MathWorks MCP server: the agent starts and quits MATLAB, writes and runs code, and checks it for errors and style
Official
Redis's official MCP server: strings, hashes, streams, JSON and vector search from your agent
Official
An MCP server from AntV for generating charts and diagrams: 25+ visualization types, from lines and bars to maps, mind maps and network graphs
data.gouv.fr MCP
data.gouv.fr MCP Server
Official MCP server for France's open data portal: search, explore and query datasets straight from a chat with the agent
A Python MCP server for MySQL: listing tables, reading data, running SQL and inspecting schema through a controlled interface
Neo4j Labs MCP servers: Cypher queries on a graph, graph memory for agents, Aura management and data modeling
MCP server and CLI to drive real Microsoft Excel: Power Query, DAX, VBA, PivotTables and charts
DuckDB / MotherDuck MCP Server
DuckDB / MotherDuck Local MCP Server
An MCP server for SQL analytics on DuckDB: local files, in-memory databases, S3-hosted databases and MotherDuck
Russian stack
MCP server for the Yandex DataLens public API: 70 tools for dashboards, charts, datasets and connections
hh.ru MCP
hh-mcp
MCP server for the hh.ru API: vacancy and employer search, salary estimates, reference lists, resumes with employer access
DaData MCP
dadata-mcp
DaData MCP server with 31 tools: address suggestions, company lookup by INN, phone and passport cleaning, reference lists
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.