Sezzlee SQL Server MCP Server

by sezzleeio.github.sezzlee/mssqlv0.2.1

Explore and query Microsoft SQL Server read-only: catalogue search, schema and bounded queries.

1Node.jsstdioofficial registry

context tax

pending

security

97/100

cold start

pending

freshness

Activetoday

Our reading of Sezzlee SQL Server, from the data

Sezzlee SQL Server is a database MCP server from sezzlee, listed in the official MCP Registry.

We haven't measured its tool list yet, so its token cost is unknown.

Maintenance is active: the last public signal was in the last day (2026-10-18). For comparison, 64% of database servers are active or maintained.

With 1 GitHub stars it ranks #538 of 1,397 database servers we index.

It runs locally on your machine over stdio and needs one secret (SEZZLEE_MSSQL_PASSWORD); use a scoped, least-privilege key.

Install Sezzlee SQL Server MCP server

claude mcp add mssql-sezzlee -e SEZZLEE_MSSQL_SERVER='<sezzlee-mssql-server>' -e SEZZLEE_MSSQL_DATABASE='<sezzlee-mssql-database>' -e SEZZLEE_MSSQL_USER='<sezzlee-mssql-user>' -e SEZZLEE_MSSQL_PASSWORD='<sezzlee-mssql-password>' -- npx -y @sezzlee/mssql-mcp

{
  "mcpServers": {
    "mssql-sezzlee": {
      "command": "npx",
      "args": [
        "-y",
        "@sezzlee/mssql-mcp"
      ],
      "env": {
        "SEZZLEE_MSSQL_SERVER": "<sezzlee-mssql-server>",
        "SEZZLEE_MSSQL_DATABASE": "<sezzlee-mssql-database>",
        "SEZZLEE_MSSQL_USER": "<sezzlee-mssql-user>",
        "SEZZLEE_MSSQL_PASSWORD": "<sezzlee-mssql-password>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "mssql-sezzlee": {
      "command": "npx",
      "args": [
        "-y",
        "@sezzlee/mssql-mcp"
      ],
      "env": {
        "SEZZLEE_MSSQL_SERVER": "<sezzlee-mssql-server>",
        "SEZZLEE_MSSQL_DATABASE": "<sezzlee-mssql-database>",
        "SEZZLEE_MSSQL_USER": "<sezzlee-mssql-user>",
        "SEZZLEE_MSSQL_PASSWORD": "<sezzlee-mssql-password>"
      }
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "mssql-sezzlee": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@sezzlee/mssql-mcp"
      ],
      "env": {
        "SEZZLEE_MSSQL_SERVER": "<sezzlee-mssql-server>",
        "SEZZLEE_MSSQL_DATABASE": "<sezzlee-mssql-database>",
        "SEZZLEE_MSSQL_USER": "<sezzlee-mssql-user>",
        "SEZZLEE_MSSQL_PASSWORD": "<sezzlee-mssql-password>"
      }
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "mssql-sezzlee": {
      "command": "npx",
      "args": [
        "-y",
        "@sezzlee/mssql-mcp"
      ],
      "env": {
        "SEZZLEE_MSSQL_SERVER": "<sezzlee-mssql-server>",
        "SEZZLEE_MSSQL_DATABASE": "<sezzlee-mssql-database>",
        "SEZZLEE_MSSQL_USER": "<sezzlee-mssql-user>",
        "SEZZLEE_MSSQL_PASSWORD": "<sezzlee-mssql-password>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
SEZZLEE_MSSQL_SERVER	yes	—	Database host
SEZZLEE_MSSQL_PORT	—	—	Database port
SEZZLEE_MSSQL_DATABASE	yes	—	Database name
SEZZLEE_MSSQL_USER	yes	—	Login of a read-only principal
SEZZLEE_MSSQL_PASSWORD	yes	yes	Password of that login
SEZZLEE_MSSQL_ENCRYPT	—	—	Encrypt the connection
SEZZLEE_MSSQL_TRUST_SERVER_CERTIFICATE	—	—	Accept an unverified server certificate
SEZZLEE_MSSQL_CONNECT_TIMEOUT_MS	—	—	Connect timeout in milliseconds
SEZZLEE_MSSQL_QUERY_TIMEOUT_MS	—	—	Query timeout in milliseconds

Security signals

97/100 — no known issues found as of 2026-10-19, from the checks below. This is not a guarantee of safety; review what a server can do before connecting it.

Deductions

No security policy (SECURITY.md)-3

Checks

✓Repository hygiene (archived, activity, license, security policy)
○Package metadata (install scripts, provenance) — pending
○Tool descriptions (prompt-injection and hidden-text heuristics) — pending
○Source scan (secrets, CVEs, risky code) by vectra-guard — pending

Scan it yourself before installing with vectra-guard, the open-source agent security CLI. Scoring rules

Freshness

Active — last maintenance signal today. The newest of the signals below sets the band.

Last commit (default branch)
2026-10-18 · today · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-10-11 · 7d ago · official registry · v0.2.1

How it compares in Database

Against the most-starred database servers we index. Token cost is per model turn, measured from each server's live tool list.

Server	Stars	Tools	Tokens / turn	Freshness	Runs
Sezzlee SQL Server (this)	1	—	not measured	Active	local
Screenpipe	21,982	—	not measured	Active	—
Genai Toolbox	16,679	—	not measured	Active	hosted
Convex Backend	12,716	—	not measured	Active	—
Kubeshark	12,100	—	not measured	Active	local
Baserow	6,174	—	not measured	Active	—

All database MCP servers

FAQ

›How do I install the Sezzlee SQL Server MCP server in Claude Code?

Run: claude mcp add mssql-sezzlee -e SEZZLEE_MSSQL_SERVER='<sezzlee-mssql-server>' -e SEZZLEE_MSSQL_DATABASE='<sezzlee-mssql-database>' -e SEZZLEE_MSSQL_USER='<sezzlee-mssql-user>' -e SEZZLEE_MSSQL_PASSWORD='<sezzlee-mssql-password>' -- npx -y @sezzlee/mssql-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Sezzlee SQL Server require an API key?

Yes. It expects SEZZLEE_MSSQL_SERVER, SEZZLEE_MSSQL_DATABASE, SEZZLEE_MSSQL_USER, SEZZLEE_MSSQL_PASSWORD, of which 1 is a secret.

›Can I use Sezzlee SQL Server as a remote (hosted) MCP server?

No hosted endpoint is published; it runs locally over stdio.

›Is Sezzlee SQL Server in the official MCP registry?

Yes, as io.github.sezzlee/mssql.

Sources and method

Official MCP Registry entry: updated 2026-10-11
GitHub repository: fetched 2026-10-19
Package registry (npm / PyPI): listed
Security signals, computed by us: 2026-10-19
Last checked against all sources: 2026-10-19

The description, packages and links come from the maintainer's own published metadata. Token cost, security signals, freshness and the reading above are MCPSkillHub's own measurements; see the methodology. Spot an error? Request a correction or claim the listing.