mcp-mssql-query
MCP server for read-only SQL Server queries. Only SELECT statements are allowed — all other operations are rejected at the SQL validation layer.
Features
- SELECT-only enforcement (INSERT/UPDATE/DELETE/DDL all blocked)
- AST-level SQL analysis via
sqlglotto catch injection and embedded write operations - Blocks dangerous functions:
xp_cmdshell,sp_executesql,OPENROWSET, etc. - Stacked statement prevention (
;separated statements) - Returns results as JSON with column names, rows, and truncation indicator
Configuration
Set these environment variables:
| Variable | Description | Default |
|---|---|---|
MSSQL_HOST |
SQL Server hostname | localhost |
MSSQL_PORT |
Port | 1433 |
MSSQL_DATABASE |
Database name | |
MSSQL_USERNAME |
Login username | |
MSSQL_PASSWORD |
Login password |
Claude Desktop configuration
{
"mcpServers": {
"mssql": {
"command": "uvx",
"args": ["mcp-mssql-query@latest"],
"env": {
"MSSQL_HOST": "your-server",
"MSSQL_DATABASE": "your-db",
"MSSQL_USERNAME": "your-user",
"MSSQL_PASSWORD": "your-password"
}
}
}
}
Tool
query_mssql
Run a read-only SELECT query against the configured SQL Server database.
Parameters:
sql(required) — T-SQL SELECT statementmax_rows(optional) — Maximum rows to return, default 100, max 1000
1 maintainer
Metadata
1 maintainer
Release files for mcp-mssql-query 0.1.0
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Source distribution (sdist)
| File | Size | Uploaded | Provenance | |
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| mcp_mssql_query-0.1.0.tar.gz | 3.7 kB | With provenance | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| mcp_mssql_query-0.1.0-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 8.2 kB
Release files / mcp_mssql_query-0.1.0.tar.gz
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