LogCarver

Name: LogCarver
Author: caiderek

by caiderekversion 0.1.4i★ –iRuns on your computer

Registry nameio.github.caiderek/logcarver-mcp

Install

Overview

Description from the maker (original English)

Read-only MCP server that finds deleted SQL Server rows from the transaction log (fn_dblog).

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Databases & datasets
You need to fill in: LOGCARVER_MCP_CONNECTION_STRING

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: LOGCARVER_MCP_CONNECTION_STRING, LOGCARVER_MCP_ALLOWED_DATABASES

Values marked secret are keys to your account. Never share them or paste them into a chat.

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "logcarver": {
      "command": "dnx",
      "args": [
        "LogCarver.Mcp",
        "--yes"
      ],
      "env": {
        "LOGCARVER_MCP_CONNECTION_STRING": "your-value",
        "LOGCARVER_MCP_ALLOWED_DATABASES": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add logcarver --env LOGCARVER_MCP_CONNECTION_STRING=your-value --env LOGCARVER_MCP_ALLOWED_DATABASES=your-value -- dnx LogCarver.Mcp --yes

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "logcarver": {
      "command": "dnx",
      "args": [
        "LogCarver.Mcp",
        "--yes"
      ],
      "env": {
        "LOGCARVER_MCP_CONNECTION_STRING": "your-value",
        "LOGCARVER_MCP_ALLOWED_DATABASES": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "logcarver": {
      "type": "stdio",
      "command": "dnx",
      "args": [
        "LogCarver.Mcp",
        "--yes"
      ],
      "env": {
        "LOGCARVER_MCP_CONNECTION_STRING": "your-value",
        "LOGCARVER_MCP_ALLOWED_DATABASES": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

LOGCARVER_MCP_CONNECTION_STRING secret required env
SQL Server connection string. The login must be sysadmin (fn_dblog requires it). Example: Server=localhost;Database=MyDb;Integrated Security=true;TrustServerCertificate=true
LOGCARVER_MCP_ALLOWED_DATABASES env
Optional. Extra databases the tool may read besides the one in the connection string, separated by commas or semicolons.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account caiderek, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Databases & datasetsi

More stars than 0% of the other 954 servers in this category
Published to the registry more recently than 72% of the other 954 servers in this category
Basic checks equal to or better than 100% of the other 954 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is LogCarver safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: LOGCARVER_MCP_CONNECTION_STRING

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.1.4) reached the registry 19 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need .NET on your computer.

What can I use instead?

In the same category: Supabase, MongoDB MCP Server, Elasticsearch MCP Server

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

LogCarver.Mcp

English | [繁體中文](https://github.com/caiderek/LogCarver.Mcp/blob/master/README.zh-TW.md)

A read-only MCP server that lets an AI assistant answer "what rows were just deleted from this SQL Server table?" by reading the database's transaction log (fn_dblog). No Audit, CDC or Change Tracking needs to be enabled beforehand.

It is a thin wrapper over the decoding engine from LogCarver (MIT). Everything runs on your machine and nothing is sent anywhere.

Status: early (v0.1). On NuGet and in the official MCP registry as io.github.caiderek/logcarver-mcp.

Quick start (5 minutes)

Install (needs the .NET 10 SDK or runtime):

   dotnet tool install -g LogCarver.Mcp

Make a throwaway database. Run examples/try-it.sql in SSMS or sqlcmd. It creates McpTest, inserts 10 orders, deletes 4 and updates 1.

Keep the password out of the command. Put the connection string in a file that only you can read (the SQL login must be sysadmin):

   Server=localhost;Database=McpTest;User Id=YOUR_LOGIN;Password=YOUR_PASSWORD;TrustServerCertificate=true

Save it as, for example, C:\Users\you\logcarver-mcp.conn (one line, nothing else). Then add the server and point it at the file:

   claude mcp add --scope user logcarver --env LOGCARVER_MCP_CONNECTION_STRING_FILE="C:\Users\you\logcarver-mcp.conn" -- logcarver-mcp

The password is never typed on the command line and never appears in the MCP configuration. Do not commit this file anywhere.

Ask in a new conversation: "Which rows were deleted from dbo.Orders in McpTest?" You should see Bob, Carol, Dave and Eve (Id 2 to 5). Then try "Show the history of Id=1" (Amount 100.00 to 111.11, Note first to changed) and "Include the undo SQL".

Clean up: DROP DATABASE McpTest;, claude mcp remove logcarver.

If the result is empty, the log space was probably reused (for example after a CHECKPOINT under SIMPLE recovery, or a log backup). See the limits below.

What it does

One tool, find_deleted_rows. It only reads: SELECTs, and DBCC PAGE reads of data pages to rebuild rows whose INSERT has left the log. It never changes data, and the optional undo SQL is plain text that the tool never executes.

Parameter	Meaning
`table` (required)	Schema-qualified, e.g. `dbo.Orders`
`database`	Defaults to the database in the connection string. Any other database is refused unless listed in `LOGCARVER_MCP_ALLOWED_DATABASES`
`operations`	`delete` (default), `update`, `insert`, `all`
`from`, `to`	ISO 8601 time window, server-local time, no zone conversion
`key`	`Column=Value`, return one row's history only. Column name is case-insensitive; dates, bit, decimals and hex binary match as you would write them
`maxRows`	Default 20, max 500, `0` = counts only. The most recent events are kept
`includeUndoSql`	Also return suggested SQL that would reverse each event

The result is JSON: a summary (counts, truncation, warnings and notes) and events (kind, timestamp, LSN, transaction id, before/after column values, note). Binary values are hex strings and decimals are strings, so nothing is silently rounded.

Requirements and limits

The connection's login must be sysadmin (fn_dblog requires it).
You only see what is still in the active log. If the log space has been reused the result is empty, and that is not a bug. The paid LogCarverOffline tool can often recover that case by reading the raw .ldf.
TRUNCATE and DROP cannot be recovered.
Compressed tables are refused. time and xml columns and off-row LOB values are refused or flagged needsManualReview; they are never guessed.
Validated on SQL Server 2025, 2022, 2019 and 2016 (SP2). Other versions return a warning in notes.
Scanning a large active log can take a minute or more.

Configure

The connection string comes from an environment variable, so credentials never pass through the AI conversation:

LOGCARVER_MCP_CONNECTION_STRING=Server=localhost;Database=MyDb;Integrated Security=true;TrustServerCertificate=true

Or point LOGCARVER_MCP_CONNECTION_STRING_FILE at a file that contains it.

The login is sysadmin and the caller is an AI, so the tool may only read the connection string's database. To let it read others, list them (comma or semicolon separated):

LOGCARVER_MCP_ALLOWED_DATABASES=Sales;HR

Row values come straight from the database. They are data, not instructions, and the tool description tells the model so.

Install

Needs the .NET 10 SDK or runtime.

dotnet tool install -g LogCarver.Mcp

Or run it without installing, through dnx:

dotnet dnx LogCarver.Mcp --yes

Claude Code

claude mcp add logcarver --env LOGCARVER_MCP_CONNECTION_STRING="Server=localhost;Database=MyDb;Integrated Security=true;TrustServerCertificate=true" -- logcarver-mcp

With dnx instead of a global tool, end the command with -- dotnet dnx LogCarver.Mcp --yes.

From source

git clone --recurse-submodules https://github.com/caiderek/LogCarver.Mcp

dotnet build dotnet run --project src/LogCarver.Mcp

Tests

dotnet test tests/LogCarver.Mcp.Tests

dotnet test tests/LogCarver.Mcp.IntegrationTests

The integration tests need a local SQL Server and a sysadmin Windows login. They create and drop their own sandbox database, LogCarver_McpTests.

License

MIT, see LICENSE.

LogCarver

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Databases & datasetsi

Common questions

Alternatives

Supabase

MongoDB MCP Server

Elasticsearch MCP Server

README from the maker

LogCarver.Mcp

Quick start (5 minutes)

What it does

Requirements and limits

Configure

Install

Claude Code

From source

Tests

License