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MariaDB / MySQL Database Access MCP Server

MCP Server

Secure, read‑only MariaDB/MySQL query access via MCP

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Updated Sep 19, 2025

About

Provides a safe, read‑only interface to MariaDB and MySQL databases through MCP, allowing listing of databases, tables, schema descriptions, and execution of SELECT queries with built‑in SQL injection protection.

Capabilities

Resources
Access data sources
Tools
Execute functions
Prompts
Pre-built templates
Sampling
AI model interactions

Mariadb MCP Server Overview

The Mariadb MCP Server bridges the gap between AI assistants and relational data stored in MariaDB. By exposing a database schema as an MCP resource and providing a read‑only query tool, it allows Claude or other AI clients to retrieve structured information without leaving the conversation. This eliminates the need for manual SQL scripting or custom API wrappers, enabling developers to focus on higher‑level business logic while the AI handles data access.

At its core, the server offers two primary capabilities. First, it publishes a resources endpoint that lists all tables and columns in the connected database, giving the AI context about what data is available. Second, it exposes a query_database tool that accepts SQL SELECT statements and returns the result set. Because the tool is read‑only, it preserves data integrity while still granting powerful analytical capabilities. Developers can therefore ask the AI to fetch customer records, aggregate sales figures, or perform ad‑hoc reporting—all through natural language prompts.

Key features include:

  • Schema discovery – The server automatically reflects the database structure, allowing the AI to understand table relationships and column types.
  • Secure read‑only access – Only SELECT queries are permitted, preventing accidental data modification while still enabling rich insights.
  • Environment‑driven configuration – Connection details are supplied via environment variables or a JSON config, making the server flexible for production and development setups.
  • Cross‑platform support – The README provides configuration snippets for both macOS and Windows, ensuring easy integration with Claude Desktop on common operating systems.

Typical use cases span from data‑driven product recommendations to compliance reporting. For instance, a sales team could ask the AI to list all orders above a certain value within the last month, and the server will return a precise result set. In another scenario, a data analyst might query aggregated metrics directly from the conversation, reducing turnaround time for exploratory analysis.

By integrating seamlessly into AI workflows, the Mariadb MCP Server removes boilerplate code and empowers developers to create more intelligent, data‑aware applications. Its read‑only design protects sensitive information, while its schema exposure ensures the AI can reason about data relationships. Overall, this server offers a lightweight, secure, and developer‑friendly bridge between MariaDB and AI assistants.