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SQL Server MCP

by millelog
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Python
Remote

SQL Server MCP

A read-only MCP (Model Context Protocol) server for SQL Server database introspection. Use with Claude Desktop to let Claude explore and query your SQL Server databases.

Features

  • List databases, tables, views, stored procedures, and functions

  • Get object definitions (DDL/source code)

  • Execute read-only SELECT queries

  • Search for objects across databases

  • Read-only by design - all mutation queries are blocked

Related MCP server: mssql-mcp

Installation

# Clone the repo
git clone https://github.com/millelog/sql-server-mcp.git
cd sql-server-mcp

# Install in a virtual environment
python -m venv .venv
source .venv/bin/activate  # On Windows: .venv\Scripts\activate
pip install -e .

Claude Desktop Configuration

Add to your Claude Desktop config file:

  • Windows: %APPDATA%\Claude\claude_desktop_config.json

  • macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "sql-server": {
      "command": "python",
      "args": ["-m", "sql_server_mcp"],
      "cwd": "C:\\path\\to\\sql-server-mcp",
      "env": {
        "MSSQL_HOST": "your-server",
        "MSSQL_USER": "your-username",
        "MSSQL_PASSWORD": "your-password",
        "MSSQL_DATABASE": "master"
      }
    }
  }
}

Restart Claude Desktop after updating the config.

Configuration Options

Variable

Description

Default

MSSQL_HOST

SQL Server hostname

localhost

MSSQL_PORT

SQL Server port

1433

MSSQL_USER

Username

-

MSSQL_PASSWORD

Password

-

MSSQL_DATABASE

Default database

master

MSSQL_CONNECTION_STRING

Full connection string (overrides above)

-

MAX_ROWS

Maximum rows returned

100

QUERY_TIMEOUT

Query timeout (seconds)

30

ALLOWED_DATABASES

Comma-separated allowlist

-

BLOCKED_DATABASES

Comma-separated blocklist

-

Available Tools

Tool

Description

list_databases

List all accessible databases

list_tables

List tables in a database

get_table_definition

Get CREATE TABLE DDL

get_table_columns

Get column metadata

get_table_indexes

Get index information

get_table_relationships

Get foreign key relationships

list_views

List views in a database

get_view_definition

Get CREATE VIEW DDL

list_procedures

List stored procedures

get_procedure_definition

Get CREATE PROCEDURE DDL

get_procedure_parameters

Get procedure parameters

list_functions

List user-defined functions

get_function_definition

Get CREATE FUNCTION DDL

execute_query

Run read-only SELECT queries

get_sample_data

Get sample rows from a table

search_objects

Search for objects by name

search_definitions

Search within object definitions

get_schema_overview

Get database schema summary (object counts, size)

Development

# Run tests
pytest tests/ -v

# Run with coverage
pytest tests/ --cov=src/sql_server_mcp

License

MIT

Install Server
A
license - permissive license
A
quality
D
maintenance

How are these scores calculated?

Maintenance

–Maintainers
–Response time
–Release cycle
–Releases (12mo)
Commit activity

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