What is sql-sentinel CLAUDE.md?

A set of repository instructions for SQL Sentinel, a .NET server that monitors and diagnoses Microsoft SQL Server databases. It describes query profiling, deadlocks, blocking, wait statistics, and database operations.

Use it when modifying SQL Server monitoring, diagnostics, database tools, services, or deployment settings. It also documents platform-specific publishing commands.

It gives coding agents the project overview and the commands needed to restore, build, run, and publish the server. This reduces mistakes when changing monitoring or database features.

How tkmawarire/sql-sentinel configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to tkmawarire/sql-sentinel. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/tkmawarire/sql-sentinel/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/tkmawarire/sql-sentinel

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/tkmawarire/sql-sentinel/claude-md/github.svg)](https://agentmods.dev/instructions/tkmawarire/sql-sentinel/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/tkmawarire/sql-sentinel/claude-md"><img src="https://agentmods.dev/badge/instructions/tkmawarire/sql-sentinel/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/tkmawarire/sql-sentinel/claude-md"><img src="https://agentmods.dev/badge/instructions/tkmawarire/sql-sentinel/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 944 This file is loaded in full into every session.

When invoked 944 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00944	$0.00944
Opus 5.5	$0.00378	$0.00378
Sonnet 5.5	$0.00189	$0.00189
Haiku 4.5	$0.00094	$0.00094

Measured 2mo ago against content hash 9fb35ff31afc, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

sql-sentinel CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 83 lines

How it starts

The opening of the file, as written. The whole thing — 83 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

SQL Sentinel MCP Server (v2.3.0) - a .NET 9 MCP (Model Context Protocol) server for SQL Server monitoring, diagnostics, and database operations using Extended Events and DMVs. Provides query profiling, deadlock detection, blocking analysis, wait stats, intelligent diagnostics, and CRUD database tools. Uses Microsoft.Data.SqlClient for native SQL Server connectivity (no ODBC drivers required).

Build Commands

# Restore and build
dotnet restore
dotnet build

# Run the server
dotnet run

# Publish single executable (pick your platform)
dotnet publish -c Release -r win-x64 --self-contained
dotnet publish -c Release -r linux-x64 --self-contained
dotnet publish -c Release -r osx-x64 --self-contained
dotnet publish -c Release -r osx-arm64 --self-contained

Output location: bin/Release/net9.0/{runtime}/publish/

Architecture

Program.cs                          # Entry point, DI setup, MCP server config
├── Services/
│   ├── ProfilerService.cs          # Core Extended Events logic (IProfilerService)
│   ├── QueryFingerprintService.cs  # SQL normalization & fingerprinting (IQueryFingerprintService)
│   ├── WaitStatsService.cs         # DMV-based wait stats analysis (IWaitStatsService)
│   └── SessionConfigStore.cs       # In-memory session config storage
├── Models/
│   ├── ProfilerModels.cs           # Records, enums (SessionConfig, ProfilerEvent, DeadlockEvent, etc.)
│   └── DbOperationResult.cs        # Result model for CRUD database operations
├── Utilities/
│   └── SqlInputValidator.cs        # SQL input validation & escaping (shared across tools)
└── Tools/
    ├── SessionManagementTools.cs   # MCP tools: create/start/stop/drop/list/quick_capture
    ├── EventRetrievalTools.cs      # MCP tools: get_events/get_stats/analyze_sequence/get_connection_info
    ├── DiagnosticTools.cs          # MCP tools: get_deadlocks/get_blocking/get_wait_stats/health_check
    ├── PermissionTools.cs          # MCP tools: check_permissions/grant_permissions
    └── DatabaseTools.cs            # MCP tools: list_tables/describe_table/create_table/read_data/insert_data/update_data/drop_table

Read the full file on GitHub · 83 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 83 lines · 944 tokens per session scan A 9fb35ff31afc

Subscribe to this mod's changes

sql-sentinel CLAUDE.md is an instructions file published in the GitHub repository tkmawarire/sql-sentinel (6 stars, last pushed 1mo ago), licensed MIT. It adds 944 tokens to every session, about $0.0038 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Analytics and metrics Databases extended-events mcp-server sql-server

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sql-sentinel: Instructions file for Claude Code