Explore and query Microsoft SQL Server read-only: catalogue search, schema and bounded queries.
Connect Runs on your machine
claude mcp add mssql -e SEZZLEE_MSSQL_SERVER=<SEZZLEE_MSSQL_SERVER> -e SEZZLEE_MSSQL_PORT=<SEZZLEE_MSSQL_PORT> -e SEZZLEE_MSSQL_DATABASE=<SEZZLEE_MSSQL_DATABASE> -e SEZZLEE_MSSQL_USER=<SEZZLEE_MSSQL_USER> -e SEZZLEE_MSSQL_PASSWORD=<SEZZLEE_MSSQL_PASSWORD> -e SEZZLEE_MSSQL_ENCRYPT=<SEZZLEE_MSSQL_ENCRYPT> -e SEZZLEE_MSSQL_TRUST_SERVER_CERTIFICATE=<SEZZLEE_MSSQL_TRUST_SERVER_CERTIFICATE> -e SEZZLEE_MSSQL_CONNECT_TIMEOUT_MS=<SEZZLEE_MSSQL_CONNECT_TIMEOUT_MS> -e SEZZLEE_MSSQL_QUERY_TIMEOUT_MS=<SEZZLEE_MSSQL_QUERY_TIMEOUT_MS> -- npx -y @sezzlee/[email protected]{
"mcpServers": {
"mssql": {
"command": "npx",
"args": [
"-y",
"@sezzlee/[email protected]"
],
"env": {
"SEZZLEE_MSSQL_SERVER": "<SEZZLEE_MSSQL_SERVER>",
"SEZZLEE_MSSQL_PORT": "<SEZZLEE_MSSQL_PORT>",
"SEZZLEE_MSSQL_DATABASE": "<SEZZLEE_MSSQL_DATABASE>",
"SEZZLEE_MSSQL_USER": "<SEZZLEE_MSSQL_USER>",
"SEZZLEE_MSSQL_PASSWORD": "<SEZZLEE_MSSQL_PASSWORD>",
"SEZZLEE_MSSQL_ENCRYPT": "<SEZZLEE_MSSQL_ENCRYPT>",
"SEZZLEE_MSSQL_TRUST_SERVER_CERTIFICATE": "<SEZZLEE_MSSQL_TRUST_SERVER_CERTIFICATE>",
"SEZZLEE_MSSQL_CONNECT_TIMEOUT_MS": "<SEZZLEE_MSSQL_CONNECT_TIMEOUT_MS>",
"SEZZLEE_MSSQL_QUERY_TIMEOUT_MS": "<SEZZLEE_MSSQL_QUERY_TIMEOUT_MS>"
}
}
}
}{
"mcpServers": {
"mssql": {
"command": "npx",
"args": [
"-y",
"@sezzlee/[email protected]"
],
"env": {
"SEZZLEE_MSSQL_SERVER": "<SEZZLEE_MSSQL_SERVER>",
"SEZZLEE_MSSQL_PORT": "<SEZZLEE_MSSQL_PORT>",
"SEZZLEE_MSSQL_DATABASE": "<SEZZLEE_MSSQL_DATABASE>",
"SEZZLEE_MSSQL_USER": "<SEZZLEE_MSSQL_USER>",
"SEZZLEE_MSSQL_PASSWORD": "<SEZZLEE_MSSQL_PASSWORD>",
"SEZZLEE_MSSQL_ENCRYPT": "<SEZZLEE_MSSQL_ENCRYPT>",
"SEZZLEE_MSSQL_TRUST_SERVER_CERTIFICATE": "<SEZZLEE_MSSQL_TRUST_SERVER_CERTIFICATE>",
"SEZZLEE_MSSQL_CONNECT_TIMEOUT_MS": "<SEZZLEE_MSSQL_CONNECT_TIMEOUT_MS>",
"SEZZLEE_MSSQL_QUERY_TIMEOUT_MS": "<SEZZLEE_MSSQL_QUERY_TIMEOUT_MS>"
}
}
}
}{
"servers": {
"mssql": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@sezzlee/[email protected]"
],
"env": {
"SEZZLEE_MSSQL_SERVER": "<SEZZLEE_MSSQL_SERVER>",
"SEZZLEE_MSSQL_PORT": "<SEZZLEE_MSSQL_PORT>",
"SEZZLEE_MSSQL_DATABASE": "<SEZZLEE_MSSQL_DATABASE>",
"SEZZLEE_MSSQL_USER": "<SEZZLEE_MSSQL_USER>",
"SEZZLEE_MSSQL_PASSWORD": "<SEZZLEE_MSSQL_PASSWORD>",
"SEZZLEE_MSSQL_ENCRYPT": "<SEZZLEE_MSSQL_ENCRYPT>",
"SEZZLEE_MSSQL_TRUST_SERVER_CERTIFICATE": "<SEZZLEE_MSSQL_TRUST_SERVER_CERTIFICATE>",
"SEZZLEE_MSSQL_CONNECT_TIMEOUT_MS": "<SEZZLEE_MSSQL_CONNECT_TIMEOUT_MS>",
"SEZZLEE_MSSQL_QUERY_TIMEOUT_MS": "<SEZZLEE_MSSQL_QUERY_TIMEOUT_MS>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
SEZZLEE_MSSQL_SERVERRequired | Database host |
SEZZLEE_MSSQL_PORTOptional | Database port |
SEZZLEE_MSSQL_DATABASERequired | Database name |
SEZZLEE_MSSQL_USERRequired | Login of a read-only principal |
SEZZLEE_MSSQL_PASSWORDRequired, secret | Password of that login |
SEZZLEE_MSSQL_ENCRYPTOptional | Encrypt the connection |
SEZZLEE_MSSQL_TRUST_SERVER_CERTIFICATEOptional | Accept an unverified server certificate |
SEZZLEE_MSSQL_CONNECT_TIMEOUT_MSOptional | Connect timeout in milliseconds |
SEZZLEE_MSSQL_QUERY_TIMEOUT_MSOptional | Query timeout in milliseconds |
Details
| Package | @sezzlee/[email protected] (NPM, stdio) |
| First published | 11 Oct 2026 |
| Last updated | 11 Oct 2026 |
| Registry name | io.github.sezzlee/mssql |
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