What operations are allowed by default?
Only read-only operations: SELECT, SHOW, DESCRIBE, and EXPLAIN. INSERT, UPDATE, and DELETE are blocked unless explicitly enabled via environment variables.
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This MCP server provides read-only access to MariaDB and MySQL databases, allowing users to list databases, list tables, describe table schemas, and execute SQL queries. It is designed for developers and administrators who need to query databases securely through the Model Context Protocol.
Install via npm (npm install -g mariadb-mcp-server) or build from source. Configure required environment variables (host, port, user, password, etc.) and add the server configuration to your MCP settings file. Use tools such as list_databases, list_tables, describe_table, and execute_query to interact with the database.
Only read-only operations: SELECT, SHOW, DESCRIBE, and EXPLAIN. INSERT, UPDATE, and DELETE are blocked unless explicitly enabled via environment variables.
Set environment variables such as MARIADB_HOST, MARIADB_PORT, MARIADB_USER, MARIADB_PASSWORD, and optionally MARIADB_DATABASE. Refer to the installation section for full details.
By default, no. Data modification is prevented. You can enable it by setting MARIADB_ALLOW_INSERT, MARIADB_ALLOW_UPDATE, or MARIADB_ALLOW_DELETE to `true`, but this is strongly discouraged.
The default query timeout is 10000 ms (10 seconds) and the default row limit is 1000 rows. These can be changed via MARIADB_TIMEOUT_MS and MARIADB_ROW_LIMIT.
Install globally via npm: `npm install -g mariadb-mcp-server`. Alternatively, clone the repository, run `npm install` and `npm run build`, then point your MCP settings to the built `dist/index.js`.
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