xlvane: XLSX workbooks

Name: xlvane: XLSX workbooks
Author: DevXord

by DevXordversion 1.3.3i★ –iRuns on your computer

Registry nameio.github.DevXord/xlvane

Install

Overview

Description from the maker (original English)

XLSX tools: inspect, read, diff and validate workbooks; write, edit and convert with --allow-write.

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: Other

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).
The registry lists no key to fill in.

You need

npmNode.js installed (for the npx command)

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": {
    "xlvane": {
      "command": "npx",
      "args": [
        "-y",
        "@xlvane/mcp",
        "--root",
        "your-value"
      ]
    }
  }
}

Run this in your terminal

claude mcp add xlvane -- npx -y @xlvane/mcp --root your-value

This one needs values on its command line, so copy the settings and fill them in.

Or copy the settings yourself

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

{
  "mcpServers": {
    "xlvane": {
      "command": "npx",
      "args": [
        "-y",
        "@xlvane/mcp",
        "--root",
        "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 needs values on its command line, so copy the settings and fill them in.

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "xlvane": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@xlvane/mcp",
        "--root",
        "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.

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 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account DevXord, 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 Otheri

More stars than 0% of the other 32484 servers in this category
Published to the registry more recently than 95% of the other 32484 servers in this category
Basic checks equal to or better than 100% of the other 32484 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 xlvane: XLSX workbooks 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?

The registry does not list a required key, though some servers ask you to sign in on first use.

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 (1.3.3) reached the registry yesterday.

Which apps can use it?

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

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, Recta

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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.

@xlvane/mcp

An MCP (Model Context Protocol) server for XLSX files, built on xlvane and the official MCP TypeScript SDK (@modelcontextprotocol/server 2.4.0, protocol revision 2026-07-28). An MCP client, such as a coding agent, can inspect, read, compare and validate workbooks, and optionally write, edit and convert them, through tools instead of code.

Requires Node.js 22 or later. Dependencies: xlvane and @modelcontextprotocol/server (which brings @modelcontextprotocol/core and zod).

Start

npx @xlvane/mcp --root ./data                 # read-only, files inside ./data

npx @xlvane/mcp --root ./data --allow-write # also write_table, edit_cells, convert xlvane mcp --root ./data # the same server, through the xlvane CLI

Many MCP clients take a configuration like this one; check your client's documentation for its exact format and file:

"mcpServers": { "xlvane": { "command": "npx", "args": ["@xlvane/mcp", "--root", "/absolute/path/to/data"] } } }

Option	Meaning
`--root`	A directory the tools may use; repeat for several. Required. Relative paths in tool calls are resolved against the first one.
`--allow-write`	Also offer the tools that write files. Without it they are not registered at all.
`--max-file-size`	Largest file read or written. Default 64 MiB.
`--max-rows`	Largest number of rows one `read_table` call returns. Default 1000.
`--max-response-chars`	Largest tool result (also an error), in characters of its JSON text; the message carries the same data again as `structuredContent`. `read_table` returns the rows that fit (`truncated`, `nextOffset`); other tools return `XLV_E_LIMIT_EXCEEDED`. Default 1 Mi (1 048 576).
`--max-cells`	Largest number of cells in a workbook a tool reads (the `maxCells` read limit). Default 5 000 000. Lower it when the server must answer quickly: `diff` holds both workbooks in memory.

The server speaks MCP over stdin and stdout; messages for people go to stderr.

Tools

Tool	Writes	What it does
`inspect_workbook`	no	Sheets (also hidden ones), used ranges, header rows, column types with samples, merged cells, formulas, warnings.
`read_table`	no	Rows of a sheet as objects keyed by the header row; paging with `offset` and `limit`; dates as ISO 8601.
`diff`	no	Cell-by-cell differences between two workbooks.
`validate`	no	Read warnings, and column rules (`name`, `type`, `optional`) with the cell of each problem.
`write_table`	yes	Rows to a new XLSX file (report preset: bold header, frozen row, autofilter, widths).
`edit_cells`	yes	Set cells and append rows, keeping the rest of the file unchanged.
`convert`	yes	XLSX to CSV/TSV/JSON and back; CSV output escapes formula-like text.

Every tool has a JSON Schema for its input and returns its result as structuredContent and as JSON text. Errors are tool results with isError: true and the XlvError data: a stable code, the location, a hint and details (docs/errors.md).

Security

Directories: files are read and written only inside the --root directories. Paths are checked after symbolic links are resolved, so .., absolute paths and links that lead outside are refused (XLV_E_PATH_NOT_ALLOWED). A file is checked again after it is opened (the path must still lead to the same file), so swapping it for a link meanwhile does not help. Writing through a symbolic link is refused. A path outside the roots gets the same answer whether or not something exists there, also when it is reached through a symbolic link inside a root. Only regular files are read. Messages on stderr show control characters as \uXXXX.
Read-only by default: the write tools exist only with --allow-write. They create files exclusively and replace an existing file only when the call passes "overwrite": true, through a temporary file and a rename; the replacement keeps the file's permission bits (not setuid, setgid or sticky), and read-only files are not replaced. edit_cells writes formulas as given (for example HYPERLINK(...)); they are calculated when a spreadsheet application opens the file. Any file name inside a root may be written, also dot files such as .gitignore; choose the roots accordingly.
Limits: files above --max-file-size are refused for reading and writing (convert to JSON stops building the text at that size), workbooks above --max-cells cells are refused, and results above --max-response-chars are cut (read_table) or refused. The official MCP SDK closes the connection after a message larger than 10 MiB. The xlvane reader applies its limits for untrusted files (ZIP bombs, XML without DTDs or entities, the budgets of xlvane 1.1.1). validate lists at most 1 000 problems (problemsTotal counts all).
File content is data: values, sheet names and other text come from the files and may contain any text, also text meant to influence a model. The server returns it as data and does not interpret it.
No code execution: macros are never run, external links are never followed, and formulas are not calculated.

API

import { createServer, runCli } from '@xlvane/mcp';

createServer({ roots, allowWrite, maxFileBytes, maxRows, maxResponseChars, maxCells, cwd }) returns an McpServer to connect to any transport; runCli(args) is the command line.

xlvane: XLSX workbooks

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

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 Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

Recta

README from the maker

@xlvane/mcp

Start

Tools

Security

API

Links