Microsoft SQL Server for VS Code
io.github.alyiox/mcp-mssql
Read-only-by-default SQL Server: schema, parameterized SELECT, execution plans; writes opt-in.
client:VS Code
transport:stdio
runtime:nuget
Install Microsoft SQL Server in VS Code
.vscode/mcp.json
{
"inputs": [
{
"type": "promptString",
"id": "mcpmssql-connection-string",
"description": "MCPMSSQL_CONNECTION_STRING",
"password": true
},
{
"type": "promptString",
"id": "mcpmssql-description",
"description": "MCPMSSQL_DESCRIPTION",
"password": true
},
{
"type": "promptString",
"id": "mcpmssql-query-max-rows",
"description": "MCPMSSQL_QUERY_MAX_ROWS",
"password": true
},
{
"type": "promptString",
"id": "mcpmssql-query-command-timeout-seconds",
"description": "MCPMSSQL_QUERY_COMMAND_TIMEOUT_SECONDS",
"password": true
},
{
"type": "promptString",
"id": "mcpmssql-query-snapshot-max-rows",
"description": "MCPMSSQL_QUERY_SNAPSHOT_MAX_ROWS",
"password": true
},
{
"type": "promptString",
"id": "mcpmssql-query-snapshot-command-timeout-seconds",
"description": "MCPMSSQL_QUERY_SNAPSHOT_COMMAND_TIMEOUT_SECONDS",
"password": true
},
{
"type": "promptString",
"id": "mcpmssql-analyze-command-timeout-seconds",
"description": "MCPMSSQL_ANALYZE_COMMAND_TIMEOUT_SECONDS",
"password": true
},
{
"type": "promptString",
"id": "mcpmssql-allow-write",
"description": "MCPMSSQL_ALLOW_WRITE",
"password": true
},
{
"type": "promptString",
"id": "mcpmssql-write-command-timeout-seconds",
"description": "MCPMSSQL_WRITE_COMMAND_TIMEOUT_SECONDS",
"password": true
},
{
"type": "promptString",
"id": "dotnet-environment",
"description": "DOTNET_ENVIRONMENT",
"password": true
}
],
"servers": {
"mcp-mssql": {
"type": "stdio",
"command": "dnx",
"args": [
"Alyio.McpMssql",
"--yes"
],
"env": {
"MCPMSSQL_CONNECTION_STRING": "${input:mcpmssql-connection-string}",
"MCPMSSQL_DESCRIPTION": "${input:mcpmssql-description}",
"MCPMSSQL_QUERY_MAX_ROWS": "${input:mcpmssql-query-max-rows}",
"MCPMSSQL_QUERY_COMMAND_TIMEOUT_SECONDS": "${input:mcpmssql-query-command-timeout-seconds}",
"MCPMSSQL_QUERY_SNAPSHOT_MAX_ROWS": "${input:mcpmssql-query-snapshot-max-rows}",
"MCPMSSQL_QUERY_SNAPSHOT_COMMAND_TIMEOUT_SECONDS": "${input:mcpmssql-query-snapshot-command-timeout-seconds}",
"MCPMSSQL_ANALYZE_COMMAND_TIMEOUT_SECONDS": "${input:mcpmssql-analyze-command-timeout-seconds}",
"MCPMSSQL_ALLOW_WRITE": "${input:mcpmssql-allow-write}",
"MCPMSSQL_WRITE_COMMAND_TIMEOUT_SECONDS": "${input:mcpmssql-write-command-timeout-seconds}",
"DOTNET_ENVIRONMENT": "${input:dotnet-environment}"
}
}
}
}
VS Code prompts for each input the first time the server starts, so no secret is written to the file. VS Code docs