mssql-server

mssql-server is a Node.js/Microsoft SQL Server driver package that provides connectivity from applications to a Microsoft SQL Server database (e.g., running queries, managing connections, and working with parameters/results).

Evaluated Apr 04, 2026 (25d ago)
Homepage ↗ Repo ↗ Databases databases sql-server mssql nodejs driver data-access
⚙ Agent Friendliness
30
/ 100
Can an agent use this?
🔒 Security
59
/ 100
Is it safe for agents?
⚡ Reliability
32
/ 100
Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality
0
Documentation
30
Error Messages
0
Auth Simplicity
50
Rate Limits
0

🔒 Security

TLS Enforcement
80
Auth Strength
70
Scope Granularity
40
Dep. Hygiene
50
Secret Handling
50

As a DB driver, it typically supports TLS when configured (e.g., encrypt/trustServerCertificate options). Auth strength depends on SQL Server configuration (SQL logins vs integrated/AAD). Scope granularity is usually coarse because DB permissions are managed in SQL Server rather than via token scopes. Secret handling security depends on how the application uses connection strings/passwords (avoid logging them). Dependency hygiene and CVE posture cannot be determined from the provided information.

⚡ Reliability

Uptime/SLA
0
Version Stability
50
Breaking Changes
50
Error Recovery
30
AF Security Reliability

Best When

You need application-side access to MSSQL from Node.js and want a mature driver with parameterized queries and connection pooling.

Avoid When

You cannot use Node.js or cannot establish secure outbound connectivity to the SQL Server instance; or you require a hosted/managed database/API rather than a client driver.

Use Cases

  • Connect a Node.js service to Microsoft SQL Server
  • Run SQL queries and stored procedures from application code
  • Build data access layers for apps that use MSSQL
  • Migration/ETL tooling that needs MSSQL connectivity

Not For

  • Direct browser-to-database access (should be used server-side only)
  • High-level ORM/data modeling without custom SQL (unless used with an ORM layer)
  • Use as a managed database service (it is a client/driver, not a hosted platform)

Interface

REST API
No
GraphQL
No
gRPC
No
MCP Server
No
SDK
Yes
Webhooks
No

Authentication

Methods: username/password integrated authentication (if supported by environment/config) Azure AD auth patterns (if supported by driver configuration) connection-string based auth
OAuth: No Scopes: No

Auth method depends on how you configure the driver/connection options. There is no indication of OAuth flows/scopes in the package interface metadata provided.

Pricing

Free tier: No
Requires CC: No

Open-source driver; costs are primarily your SQL Server infrastructure and operational overhead.

Agent Metadata

Pagination
none
Idempotent
False
Retry Guidance
Not documented

Known Gotchas

  • Database operations may not be inherently idempotent; retries can duplicate side effects unless queries are designed safely (e.g., using transactions, upserts, or idempotency keys).
  • Connection pooling and transaction semantics can affect retry behavior and error recovery.
  • Sensitive connection configuration is often passed via code/env; agents should avoid logging secrets.

Alternatives

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Scores are editorial opinions as of 2026-04-04.

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