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  3. SQL Sentinel MCP Server
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SQL Sentinel MCP Server

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View Repository

SQL Server monitoring and diagnostics for AI agents using Extended Events. No ODBC drivers required.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent β€” or use 1-click editor setup below.

Add to CursorAdd to VS Code
Manual Client & Custom JSON ConfigExpand JSON β–Ύ

Client Config & Setup

Choose your client or environment
Target File:~/Library/Application Support/Claude/claude_desktop_config.json
claude_desktop_config.json
{
  "mcpServers": {
    "sql-sentinel-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "sql-sentinel-mcp-server"
      ]
    }
  }
}

πŸ’‘ Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Install Directory Badge Claim listing AlternativesπŸ—„οΈ More in Databases

Documentation Overview

SQL Sentinel MCP Server

NuGet Docker License: MIT

A production-ready MCP (Model Context Protocol) server for SQL Server monitoring, diagnostics, and database operations. Built with .NET 9 and Microsoft.Data.SqlClient for native SQL Server connectivity β€” no ODBC drivers required.

Features

  • Session Management β€” Create, start, stop, drop, and list Extended Events sessions
  • Smart Filtering β€” Filter by application, database, user, duration, host, and text patterns
  • Query Fingerprinting β€” Normalize and group similar queries differing only in literal values
  • Sequence Analysis β€” Trace execution order with timing gaps and cumulative duration
  • Deadlock Detection β€” Capture and analyze XML deadlock reports with victim/process details
  • Blocking Analysis β€” Monitor blocked process events with wait resource and SQL text
  • Wait Stats β€” Query sys.dm_os_wait_stats directly, categorized by type (CPU, I/O, Lock, Memory, etc.)
  • Health Check β€” Comprehensive server diagnostic: slow queries, deadlocks, blocking, wait stats, and insights
  • Real-Time Streaming β€” Stream captured events for a specified duration
  • Production-Safe β€” Auto-excludes noise (sp_reset_connection, SET statements, trace queries)
  • Database Operations β€” List tables, describe schemas, query data, insert, update, and drop tables
  • AI-Optimized β€” Structured JSON output with optional Markdown formatting

Requirements

  • SQL Server 2012+ with Extended Events enabled (default)
  • Required permissions:
    sql
    GRANT ALTER ANY EVENT SESSION TO [your_login];
    GRANT VIEW SERVER STATE TO [your_login];
    
  • For blocked process detection:
    sql
    EXEC sp_configure 'show advanced options', 1;
    RECONFIGURE;
    EXEC sp_configure 'blocked process threshold', 5;
    RECONFIGURE;
    

Installation

Option 1: Docker (Recommended)

No .NET SDK required. Works on any system with Docker installed.

Terminal
docker pull ghcr.io/tkmawarire/sql-sentinel-mcp:latest

Claude Desktop (claude_desktop_config.json)

config.json
{
  "mcpServers": {
    "sql-sentinel": {
      "command": "docker",
      "args": ["run", "-i", "--rm", "--network", "host",
               "-e", "SQL_SENTINEL_CONNECTION_STRING=Server=localhost;Database=master;User Id=sa;Password=YourPassword;TrustServerCertificate=true",
               "ghcr.io/tkmawarire/sql-sentinel-mcp:latest"]
    }
  }
}

Claude Code

Terminal
claude mcp add sql-sentinel \
  -e SQL_SENTINEL_CONNECTION_STRING="Server=localhost;Database=master;User Id=sa;Password=YourPassword;TrustServerCertificate=true" \
  -- docker run -i --rm --network host \
  -e SQL_SENTINEL_CONNECTION_STRING \
  ghcr.io/tkmawarire/sql-sentinel-mcp:latest

Network access: The -i flag is required for stdio transport. Use --network host so the container can reach SQL Server on your host machine. For remote SQL Server, omit --network host and use the accessible hostname in your connection string.

Connection string: Set SQL_SENTINEL_CONNECTION_STRING via -e. All tools read the connection string from this environment variable.

Option 2: .NET Global Tool (NuGet)

Requires .NET 9 SDK or later.

bash
dotnet tool install -g Neofenyx.SqlSentinel.Mcp
config.json
{
  "mcpServers": {
    "sql-sentinel": {
      "command": "sql-sentinel-mcp",
      "env": {
        "SQL_SENTINEL_CONNECTION_STRING": "Server=localhost;Database=master;User Id=sa;Password=YourPassword;TrustServerCertificate=true"
      }
    }
  }
}

Option 3: Build from Source

bash
git clone https://github.com/tkmawarire/sql-sentinel.git
cd sql-sentinel
dotnet build

Run directly:

bash
dotnet run --project SqlServer.Profiler.Mcp/

Or publish a self-contained single binary:

bash
# Windows
dotnet publish SqlServer.Profiler.Mcp/ -c Release -r win-x64 --self-contained

# Linux
dotnet publish SqlServer.Profiler.Mcp/ -c Release -r linux-x64 --self-contained

# macOS (Apple Silicon)
dotnet publish SqlServer.Profiler.Mcp/ -c Release -r osx-arm64 --self-contained

# macOS (Intel)
dotnet publish SqlServer.Profiler.Mcp/ -c Release -r osx-x64 --self-contained

Output will be in bin/Release/net9.0/{runtime}/publish/

Connection Strings

All tools read the connection string from the SQL_SENTINEL_CONNECTION_STRING environment variable. Set it once before starting the server:

server.ts
export SQL_SENTINEL_CONNECTION_STRING="Server=localhost;Database=master;User Id=sa;Password=YourPassword;TrustServerCertificate=false;Encrypt=true"

SQL Authentication:

Code
Server=localhost;Database=master;User Id=sa;Password=YourPassword;TrustServerCertificate=false;Encrypt=true

Windows Authentication:

Code
Server=localhost;Database=master;Integrated Security=true;TrustServerCertificate=false;Encrypt=true

Note: Only use TrustServerCertificate=true in development environments with self-signed certificates. For production, always use TrustServerCertificate=false with a valid SSL certificate.

Azure SQL:

Code
Server=yourserver.database.windows.net;Database=yourdb;User Id=user;Password=password;Encrypt=true

MCP Tools Reference

Session Lifecycle

ToolDescription
sqlsentinel_create_sessionCreate an Extended Events session with filters (not started)
sqlsentinel_start_sessionStart capturing events for an existing session
sqlsentinel_stop_sessionStop capturing; events are retained
sqlsentinel_drop_sessionDrop session and discard all events
sqlsentinel_list_sessionsList all MCP-created sessions with state and buffer usage
sqlsentinel_quick_captureCreate and start a session in one step

Event Retrieval

ToolDescription
sqlsentinel_get_eventsRetrieve captured events with filtering, sorting, and deduplication
sqlsentinel_get_statsAggregate statistics grouped by fingerprint, database, app, or login
sqlsentinel_analyze_sequenceAnalyze query execution sequence with timing and gaps
sqlsentinel_get_connection_infoList databases, applications, logins, sessions, and blocking info
sqlsentinel_stream_eventsReal-time event capture for a specified duration (1–300s)

Diagnostics

ToolDescription
sqlsentinel_get_deadlocksRetrieve deadlock events with victim, processes, locks, and SQL text
sqlsentinel_get_blockingRetrieve blocked process events with wait resources and SQL text
sqlsentinel_get_wait_statsQuery sys.dm_os_wait_stats categorized by type (no session required)
sqlsentinel_health_checkComprehensive report: slow queries, deadlocks, blocking, wait stats, insights

Permissions

ToolDescription
sqlsentinel_check_permissionsCheck current login permissions and blocked process threshold config
sqlsentinel_grant_permissionsGrant required permissions to a login (requires sysadmin)

Database Operations

ToolDescription
sqlsentinel_list_tablesList all user tables in the database (schema-qualified)
sqlsentinel_describe_tableDetailed table schema: columns, indexes, constraints, foreign keys
sqlsentinel_create_tableCreate a new table via CREATE TABLE statement
sqlsentinel_insert_dataInsert data via INSERT statement
sqlsentinel_read_dataExecute SELECT queries and return results
sqlsentinel_update_dataUpdate data via UPDATE statement
sqlsentinel_drop_tableDrop a table via DROP TABLE statement

Usage Examples

Quick Debug Session

Code
Agent: sqlsentinel_quick_capture(
    sessionName: "debug_api",
    applications: "MyWebApp",
    minDurationMs: 100
)

// User triggers the slow operation

Agent: sqlsentinel_get_events(
    sessionName: "debug_api",
    sortBy: "DurationDesc",
    limit: 20
)

Agent: sqlsentinel_drop_session(sessionName: "debug_api")

Find N+1 Queries

Code
Agent: sqlsentinel_quick_capture(
    sessionName: "n_plus_one_check",
    databases: "OrdersDB"
)

// User loads a page

Agent: sqlsentinel_get_stats(
    sessionName: "n_plus_one_check",
    groupBy: "QueryFingerprint"
)

// Look for queries with high execution counts

Trace Specific Operation

Code
Agent: sqlsentinel_analyze_sequence(
    sessionName: "my_session",
    correlationId: "order-12345",
    responseFormat: "Markdown"
)

Deadlock Detection

Code
Agent: sqlsentinel_quick_capture(
    sessionName: "deadlock_monitor",
    eventTypes: "Deadlock"
)

// Wait for deadlocks to occur

Agent: sqlsentinel_get_deadlocks(
    sessionName: "deadlock_monitor",
    responseFormat: "Markdown"
)

Blocking Analysis

Code
Agent: sqlsentinel_quick_capture(
    sessionName: "blocking_check",
    eventTypes: "BlockedProcess"
)

// Requires: sp_configure 'blocked process threshold', 5

Agent: sqlsentinel_get_blocking(
    sessionName: "blocking_check",
    responseFormat: "Markdown"
)

Server Health Check

Code
Agent: sqlsentinel_health_check(
    sessionName: "my_session",
    slowQueryThresholdMs: 1000,
    responseFormat: "Markdown"
)

Database Operations

Dockerfile
Agent: sqlsentinel_list_tables()

Agent: sqlsentinel_describe_table(
    name: "dbo.Products"
)

Agent: sqlsentinel_read_data(
    sql: "SELECT TOP 10 * FROM dbo.Products ORDER BY CreatedDate DESC"
)

Wait Stats (No Session Required)

Code
Agent: sqlsentinel_get_wait_stats(
    topN: 20,
    responseFormat: "Markdown"
)

Query Fingerprinting

Read the full README β†’View source on GitHub β†’

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Frequently Asked Questions about SQL Sentinel MCP Server

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "sql-sentinel-mcp-server": { "command": "npx", "args": ["-y", "SQL Sentinel MCP Server"] } }

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Technical Specs & Signals

CategoryπŸ—„οΈDatabases
More technical detailsExpand β–Ύ
TransportSTDIO
RuntimeNode.js
Last updatedSep 7, 2026
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28Quality signal: Emerging Β· 28/100How this signal is calculated β–Ύ
Server availabilityNot measured

Not scored for repo-hosted servers β€” we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership8/20
Documentation & tools12/30
Adoption & activity1/15
Community engagement0/10

A guidance signal from public completeness & health data β€” not a user rating. New listings start lower and rise as they add docs, get verified, and grow adoption. Signals we can't observe for a listing are skipped, not counted against it.

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