DBA Server

Multi-vendor Database Tool for DevOps, Migrations & Knowledge Management

dba-mcp is a Model Context Protocol (MCP) server designed to enable LLMs (like Claude, ChatGPT, or local models) to interact with, manage, and migrate SQL databases directly. It operates over stdio, making it ideal for integration with tools like Claude Desktop, Cursor, or any MCP client.

It combines "Infrastructure as Code" principles with persistent knowledge management, allowing AI agents to save specific context about databases (Governance, Business Rules, Schema Explanations) and recall it on demand.

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🌟 Features

• Multi-Vendor Support: Connect to Oracle, PostgreSQL, MySQL/MariaDB, SQL Server, and SQLite simultaneously.
• Hybrid Configuration:
  • Stateless: Inject connections via CLI arguments (--[id] [connection_string]).
  • Persistent: Save connections permanently using the save_connection tool (stored in local SQLite).
• Context & Knowledge Management 🧠:
  • Save AI-generated context (Markdown) about a database (e.g., "This endpoint creates users based on table X").
  • Recall context automatically to answer complex questions about specific databases.
• Schema Intelligence:
  • Compare schemas between different engines.
  • Generate DDL scripts (CREATE, ALTER) to synchronize structures.
• Data Migration:
  • migrate_data: Move data between connections with optimized bulk inserts.
  • replicate_database: Auto-Magic cloning of an entire database (Schema + Data).

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📦 Installation

Via NPX (Recommended)

You can run it directly without installing. Connections defined in CLI are loaded alongside any persistent connections saved previously.

npx @grec0/dba-mcp --local sqlite://data.db --prod postgres://user:pass@host/db

Local Installation

git clone https://github.com/grecoLab/mcp-dba.git
cd mcp-dba
npm install
npm run build

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🛠️ Configuration & Persistence

1. CLI Arguments (Ephemeral/Stateless)

Ideal for CI/CD or temporary sessions. Format: --[id] [connection_string]

/* claude_desktop_config.json */
{
  "mcpServers": {
    "dba-tools": {
      "command": "npx",
      "args": [
        "-y",
        "@grec0/dba-mcp",
        "--staging", "mysql://root:pass@localhost:3306/staging_db"
      ]
    }
  }
}

2. Persistent Storage (Stateful)

You can use tools to save connections. They are stored in an internal SQLite database (.dba-mcp/storage.db) within the running directory.

• Save: save_connection
• Remove: remove_connection
• List: list_connections (Shows source: 💾=Saved, 🖥️=CLI)

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🧰 Available Tools for LLMs

Once connected, the LLM will have access to these tools:

Connection & Context Management

Tool	Description
list_connections	Lists all active connections. Icons indicate status: 💾 Saved to Disk 🖥️ From CLI Args 📝 Context Available
save_connection	Saves a new connection URL permanently.
remove_connection	Removes a stored connection.
save_database_context	Saves AI-generated markdown documentation for a specific connection (Governance, Business Logic).
get_database_context	Retrieves the stored markdown context for a connection.

Database Operations

Tool	Description
inspect_schema	Explore the database structure. Pass tableName to see columns/PKs, or empty to list all tables.
sql_query	Execute a read-only SQL query on a specific connection.
generate_migration_ddl	Compares two schemas (Source -> Target) and generates the SQL DDL commands to make Target match Source.
migrate_data	Migrates specific tables from Source to Target using bulk inserts.
replicate_database	🔥 Power Tool: Clones an ENTIRE database. Scans source, creates tables in target, and migrates all data automatically.

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🧠 Supported Connection Strings

• SQLite: sqlite://path/to/file.db
• PostgreSQL: postgres://user:pass@host:5432/db
• MySQL: mysql://user:pass@host:3306/db
• Oracle: oracle://user:pass@host:1521/service
• SQL Server: sqlserver://user:pass@host:1433/db

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💻 Development & Release

Build

npm run build

This runs TypeScript compiler and ensures the binary is executable (shx chmod +x).

Release

To version and publish (follows Semantic Versioning):

npm run release:patch  # 0.0.1 -> 0.0.2
npm run release:minor  # 0.1.0 -> 0.2.0
npm run release:major  # 1.0.0 -> 2.0.0

Note: These scripts automatically push to Git and publish to NPM.

Inspector

To debug the MCP server communication visually:

npm run inspector -- --local sqlite://test.db

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🐳 Docker

A multi-stage Dockerfile is included for containerized deployments.

docker build -t dba-mcp .
docker run -i dba-mcp --prod postgres://...

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License

MIT