Microsoft SQL Server MCP Server

A read-only-by-default Model Context Protocol (MCP) server for Microsoft SQL Server. Beyond schema discovery and parameterized SELECT queries, it exposes execution-plan analysis for cost, operators, cardinality estimates, warnings, and index suggestions, so an agent can work out why a query is slow instead of only running it. Profile-based configuration serves multiple databases and servers from one toolset…

People who work with mssql, read only and sql server and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in C#.

VERIFIED ACTIVE

LAST COMMIT 2026-09-17 · ★ 9 · #148 OF 168 MAINTAINED DATABASE · VERIFIED 2026-09-18

MIT · C# · how we verify → /methodology

01 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

license MIT - declared in the repository

registry namespace io.github.alyiox is GitHub-verified and matches the repo owner

02 · What Microsoft SQL Server can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

What you can build

An agent gets 2 documented tools across kind, includes, including kind, includes.

The 2 tools it gives your agent

Extracted from the project's README - what Microsoft SQL Server lets an agent do.

kind: - relation or routine.
includes: - Array of detail sections: columns, indexes, constraints, relationships (relations only), definition (routines only). relationships returns foreign keys in both

03 · Who maintains Microsoft SQL Server

Microsoft SQL Server is maintained by alyiox. We track 7 MCP servers from alyiox - 5 actively maintained, 10 combined GitHub stars, oldest repo from Feb 2026.

04 · Facts

repository: github.com/alyiox/mcp-mssql
website: https://github.com/alyiox/mcp-mssql
category: database - ranked #148 of 168 actively-maintained database servers as of 2026-09-18.
registry: io.github.alyiox/mcp-mssql (active, first published 2026-04-30 · 7 versions)
packages: nuget:Alyio.McpMssql

05 · Microsoft SQL Server FAQ

What is Microsoft SQL Server?

Is Microsoft SQL Server still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-17. We re-verify nightly.

06 · Alternatives to Microsoft SQL Server

Alternatives to Microsoft SQL Server

Maintained database servers if Microsoft SQL Server isn't the fit.

Pairs well with

Servers that cover what Microsoft SQL Server doesn't - only shown when the pairing reason fits the companion.

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