LogCarver

Name: LogCarver
Author: caiderek

作者：caiderek版本 0.1.4i★ –i在你的电脑上运行

注册名称io.github.caiderek/logcarver-mcp

安装

概览

作者提供的说明（英文原文）

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

PopNx MCP 的三大支柱

这三项永远不会合并成一个分数：意见、测量和人气是不同的东西。

用户评价i暂无评价评价功能将在后续阶段与账户功能一起开放
我们的基础检查i1 项中通过 1 项依据公开信息检查；尚未扫描代码
使用情况i尚未统计★ –

它能帮你做什么

我们还没有为它写通俗的介绍。下面是我们从注册中心读取到的事实。

连接方式: 在你的电脑上运行
传输方式: stdio
分类: 数据库与数据集
你需要填写：LOGCARVER_MCP_CONNECTION_STRING

安装

选择你使用的 AI 应用，然后复制设置。

安装之前

基础检查：1 项中通过 1 项
在你的电脑上运行，拥有你的用户账户的权限（文件、网络、应用）。
需要你自己填写： LOGCARVER_MCP_CONNECTION_STRING, LOGCARVER_MCP_ALLOWED_DATABASES

标为机密的值是你账户的钥匙。千万不要分享给别人，也不要粘贴到聊天里。

你用的是哪个应用？

ClaudeClaude CodeCursorVS CodeChatGPT

在上方选择你的应用。我们会记住它，下次按钮会显示“安装到 …”。

打开 Claude Desktop → Settings → Developer → Edit Config，把下面的内容粘贴到 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"
      }
    }
  }
}

在终端中运行这条命令

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

运行前请先填写空着的值。

在 Cursor 中打开

或者自己复制设置

粘贴到项目中的 .cursor/mcp.json，或 ~/.cursor/mcp.json

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

浏览器会先询问是否打开应用，然后应用会显示设置并请你确认。密钥的值会留空，由你自己填写。

在 VS Code 中打开

或者自己复制设置

粘贴到项目中的 .vscode/mcp.json

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

浏览器会先询问是否打开应用，然后应用会显示设置并请你确认。密钥的值会留空，由你自己填写。

这个服务器在你的电脑上运行，而 ChatGPT 只能连接互联网上的服务器。请选择其他应用。

你的选择通过 Cookie 保存在这台设备上，无需账户。

需要你填写的值

LOGCARVER_MCP_CONNECTION_STRING 机密必填 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.

这些设置是根据作者在注册中心的条目生成的。如果 README 的写法不同，请以 README 为准。

它能做什么

它在你的电脑上运行；安装后，工具列表会显示在你的 AI 应用中。

基础检查i

我们检查的是任何人都能看到的信息；我们没有阅读代码。不适用的检查项不计入总数。 · 检查于 2026年11月7日

✓ 通过
作者与仓库一致
注册名称已通过 GitHub 账户 caiderek 验证，该账户拥有此仓库
… 尚未检查
仍在维护
我们还没有从 GitHub 读取这个仓库
… 尚未检查
有许可证
我们还没有从 GitHub 读取这个仓库
– 不适用
端点有响应
它在你的电脑上运行，没有互联网端点
– 不适用
使用 OAuth 登录
在你的电脑上运行，改用本地设置
… 尚未检查
工具描述中没有隐藏指令
它在你的电脑上运行；我们只能读取互联网端点的工具列表

与“数据库与数据集”中的其他服务器比较i

星标数多于此分类中其他 954 个服务器的 0%
发布到注册中心的时间比此分类中其他 954 个服务器的 72% 更新
基础检查结果等于或优于此分类中其他 954 个服务器的 100%

与注册中心里这个分类中所有活跃的服务器比较。只有当发布者拥有该仓库时，星标数才计入。

常见问题

LogCarver 安全吗？

它在 1 项适用的基础检查中通过了 1 项。我们没有阅读代码。在添加密钥或令牌之前，请先看看这个服务器要求哪些权限，并使用只具备所需权限的密钥。

它需要哪些密钥或代码？

你需要填写：LOGCARVER_MCP_CONNECTION_STRING

它在我的电脑上运行还是在云端？

它在你的电脑上运行。你的 AI 应用会在需要时启动它，数据不会经过作者的服务器（除非它自己调用在线服务）。

它还在维护吗？

GitHub 仓库最后更新于–，最新版本（0.1.4）于19天前进入注册中心。

哪些应用可以使用它？

支持 MCP 的应用，例如 Claude Desktop、Claude Code、Cursor 和 VS Code。你的电脑上还需要有 .NET。

有什么可以替代它？

同一分类中有：Supabase, MongoDB MCP Server, Elasticsearch MCP Server

替代选择

同一分类中其他作者的服务器，按星标数排序。

如何看卡片：★ GitHub 星标i三大支柱：评价 · 检查 · 使用情况i更新 = 最新版本发布到注册中心的时间i

Supabase

作者：supabase

MCP server for interacting with the Supabase platform

电脑或云端★ 2,993Apache-2.0今天更新

安装

MongoDB MCP Server

作者：mongodb-js

MongoDB Model Context Protocol Server

在你的电脑上运行★ 1,157Apache-2.0前天更新

安装

Elasticsearch MCP Server

作者：cr7258

MCP server for interacting with Elasticsearch

在你的电脑上运行★ 315Apache-2.014个月前更新

安装

作者的 README

打开 README

按原文从作者的仓库复制。PopNx MCP 没有审查或背书其内容。HTML、图片和脚本已被移除。链接会离开本站。

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.