Make ODBC Driver for SQL Server configurable

INSTALLATION_GUIDE.md

@@ -190,6 +190,25 @@ Completely quit and restart Claude Desktop to load the MCP server.
 }
 ```
 
+### MS-SQL
+
+```json
+{
+  "databases": {
+    "my_mssql": {
+      "type": "mssql",
+      "host": "localhost",
+      "port": 1433,
+      "database": "mydb",
+      "username": "root",
+      "password": "password",
+      "driver": "ODBC Driver 18 for SQL Server",
+      "read_only": true
+    }
+  }
+}
+```
+
 ### Multiple Databases
 
 ```json

README.md

@@ -279,6 +279,8 @@ Your agent will automatically use the appropriate tools to query your database.
       "username": "user",         // Required for most databases
       "password": "pass",         // Required for most databases
       "read_only": true,          // Optional: default true (recommended)
+      "driver": "ODBC Driver 17 for SQL Server",
+                                  // Optional: mssql only, default "ODBC Driver 17 for SQL Server"
       "pool_size": 5,             // Optional: connection pool size (default 5)
       "max_overflow": 2,          // Optional: max extra connections (default 2)
       "pool_timeout": 30          // Optional: connection timeout (default 30s)

src/db_mcp/config.py

@@ -29,6 +29,7 @@ def __init__(self, name: str, config: Dict[str, Any]):
         self.pool_size = config.get("pool_size", 5)
         self.max_overflow = config.get("max_overflow", 2)
         self.pool_timeout = config.get("pool_timeout", 30)
+        self.driver = config.get("driver", "ODBC Driver 17 for SQL Server")  # For SQL Server
 
         # Validate configuration
         self._validate()
@@ -83,8 +84,8 @@ def get_connection_string(self) -> str:
             return f"mysql+mysqlconnector://{auth}{self.host}{port_str}/{self.database}"
         elif self.type == "mssql":
             # For SQL Server, we need to specify the driver
-            driver = "ODBC+Driver+17+for+SQL+Server"
-            return f"mssql+pyodbc://{auth}{self.host}{port_str}/{self.database}?driver={driver}"
+            driver = self.driver.replace(" ", "+")  # Encode spaces for URL
+            return f"mssql+pyodbc://{auth}{self.host}{port_str}/{self.database}?driver={driver}&encrypt=no"
 
         raise ValueError(f"Unknown database type: {self.type}")
 

src/db_mcp/server.py

@@ -190,6 +190,16 @@ def generate_example_config():
                 "type": "sqlite",
                 "path": "./database.db",
                 "read_only": False
+            },
+            "my_mssql_db": {
+                "type": "mssql",
+                "host": "localhost",
+                "port": 1433,
+                "database": "mydb",
+                "username": "root",
+                "password": "password",
+                "driver": "ODBC Driver 18 for SQL Server",
+                "read_only": True
             }
         }
     }
@@ -207,10 +217,11 @@ def generate_example_config():
     print("\n" + "="*60)
     print("SUCCESS: config.json created!")
     print("="*60)
-    print("\nGenerated example configuration file with 3 databases:")
+    print("\nGenerated example configuration file with 4 databases:")
     print("  - my_postgres_db (PostgreSQL)")
     print("  - my_mysql_db (MySQL)")
     print("  - my_sqlite_db (SQLite)")
+    print("  - my_mssql_db (SQL Server)")
     print("\nNext steps:")
     print("1. Edit config.json with your actual database details")
     print("2. Remove database entries you don't need")