Rosetta MCP

Name: Rosetta MCP
Author: ewalid

by ewalidversion 0.1.1i★ 2iRuns on your computer

Registry nameio.github.ewalid/rosetta-mcp

How to install

What it does

AI-powered Excel translation preserving formatting, formulas, and data integrity.

Connects Runs on your computer
Account or key Needs ANTHROPIC_API_KEY
Category Docs, sheets & office work

Install

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

Passed 3/3 checks · Runs on your computer · ✓ Commands checked Nov 13, 2026

First: which AI do you use?

ClaudeWeb · app · phoneChatGPTWebClaude CodeTerminalCursorCode editorVS CodeCode editorOtherOther apps

Pick your app and the steps appear below.

Works with Claude, with some setup first

You need a Rosetta MCP key (create it on the maker’s site) · Install Node.js on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Sign up and create a Rosetta MCP key
Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.
How to get a key is in the maker’s README below
Done
Open the Claude desktop app’s settings file
SettingsDeveloperEdit Config
Done

Paste these settings and save the file

{
  "mcpServers": {
    "rosetta": {
      "command": "npx",
      "args": [
        "-y",
        "@ewalid/rosetta-mcp"
      ],
      "env": {
        "ANTHROPIC_API_KEY": "your-value"
      }
    }
  }
}

Paste the key only into the app’s field, never into a chat or to anyone

Done

Quit Claude and open it again
Done
Try it
Use Rosetta MCP and tell me what you can do for me, then show me one thing
✓ If Claude says it is using Rosetta MCP or shows a Rosetta MCP tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

ChatGPT cannot connect Rosetta MCP yet

Rosetta MCP runs on your computer, but ChatGPT can only connect servers that run on the web

What you can do instead

A · Use an app that can connect Rosetta MCP

Steps for Claude →You need a Rosetta MCP key (create it on the maker’s site) · Install Node.js on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone
Steps for Claude Code →You need a Rosetta MCP key (create it on the maker’s site) · Install Node.js on your computer first (one time)
Steps for Cursor →You need a Rosetta MCP key (create it on the maker’s site) · Install Node.js on your computer first (one time)
Steps for VS Code →You need a Rosetta MCP key (create it on the maker’s site) · Install Node.js on your computer first (one time)

B · Others in Docs, sheets & office work that work with ChatGPT

Picked from the most used in the same category, only ones that connect by address with no key

Puter MCP✓ ChatGPT
LMCP✓ ChatGPT
Keeper.sh✓ ChatGPT

Works with Claude Code, with some setup first

You need a Rosetta MCP key (create it on the maker’s site) · Install Node.js on your computer first (one time)

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Sign up and create a Rosetta MCP key
Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.
How to get a key is in the maker’s README below
Done
Open Terminal
Mac: press Command+Space and type Terminal · Windows: open PowerShell
Done
4
Paste this command and press Enter
```
claude mcp add --scope user rosetta --env ANTHROPIC_API_KEY=your-value -- npx -y @ewalid/rosetta-mcp
```
Replace “your-value” with your key before pressing Enter
Paste the key only into the app’s field, never into a chat or to anyone
Done
Type /mcp in Claude Code
You should see Rosetta MCP listed as connected
Done
Try it
Use Rosetta MCP and tell me what you can do for me, then show me one thing
✓ If Claude Code says it is using Rosetta MCP or shows a Rosetta MCP tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Cursor, with some setup first

You need a Rosetta MCP key (create it on the maker’s site) · Install Node.js on your computer first (one time)

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Sign up and create a Rosetta MCP key
Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.
How to get a key is in the maker’s README below
Done
Click this button to open Cursor
Open in Cursor
Cursor asks you to confirm; click Install
Done
Fill in your key
In the Rosetta MCP settings, ANTHROPIC_API_KEY is empty; add your key and save
Paste the key only into the app’s field, never into a chat or to anyone
Done
Open the AI chat in Cursor in Agent mode
Done
Try it
Use Rosetta MCP and tell me what you can do for me, then show me one thing
✓ If Cursor says it is using Rosetta MCP or shows a Rosetta MCP tool in the answer, you are connected

Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with VS Code, with some setup first

You need a Rosetta MCP key (create it on the maker’s site) · Install Node.js on your computer first (one time)

Install Node.js
One time only; it works for every server that needs Node.js
Open the Node.js download page ↗
Done
Sign up and create a Rosetta MCP key
Open the maker’s site, sign up and create an API key for the next step. Check the maker’s site for pricing and free plans.
How to get a key is in the maker’s README below
Done
Click this button to open VS Code
Open in VS Code
VS Code asks you to confirm; click Install
Done
Fill in your key
In the Rosetta MCP settings, ANTHROPIC_API_KEY is empty; add your key and save
Paste the key only into the app’s field, never into a chat or to anyone
Done
Open the AI chat in VS Code in Agent mode
Done
Try it
Use Rosetta MCP and tell me what you can do for me, then show me one thing
✓ If VS Code says it is using Rosetta MCP or shows a Rosetta MCP tool in the answer, you are connected

Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.

See every app that uses MCP →

JSON settings are under “For developers” below

Stuck? Ask people who use Rosetta MCP💬 Discussion →

For developers: Terminal commands and JSON settings

Installed on your computer

Claude Code

claude mcp add --scope user rosetta --env ANTHROPIC_API_KEY=your-value -- npx -y @ewalid/rosetta-mcp

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "rosetta": {
      "command": "npx",
      "args": [
        "-y",
        "@ewalid/rosetta-mcp"
      ],
      "env": {
        "ANTHROPIC_API_KEY": "your-value"
      }
    }
  }
}

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "rosetta": {
      "command": "npx",
      "args": [
        "-y",
        "@ewalid/rosetta-mcp"
      ],
      "env": {
        "ANTHROPIC_API_KEY": "your-value"
      }
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "rosetta": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@ewalid/rosetta-mcp"
      ],
      "env": {
        "ANTHROPIC_API_KEY": "your-value"
      }
    }
  }
}

Values you fill in

ANTHROPIC_API_KEY secret required env
Your Anthropic API key from console.anthropic.com. Required to perform translations using Claude AI.

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

At a glance

GitHub stars i: 2
Downloads per weeki: 30/wk
Licence i: MIT
Connection: Runs on your computer
Transport: stdio
Latest versioni: 0.1.1
Categoryi: Docs, sheets & office work
Published to registryi: Jan 17, 2026
Code last changedi: Jul 23, 2026
Maker: ewalid
Packages: npm: @ewalid/rosetta-mcp
Repo: ewalid/rosetta
Registry status: Active

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Run on your computer in

Claude Goose LM Studio Msty Studio Cherry Studio Cursor VS Code + GitHub Copilot Visual Studio Windsurf (Devin Desktop)Zed Kiro Cline Continue JetBrains AI Assistant Claude Code Codex CLI Gemini CLI OpenCode nodecode Warp LibreChat Raycast

All apps, with pros and cons →

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 14, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account ewalid, which owns the repo
✓ Pass
Still maintained
Code last changed 4 months ago
✓ Pass
Has a licence
Uses MIT
– 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

Discussion

Ask, share a tip or report that it does not work. Sorted by what people marked helpful.

No posts yet. Be the first to ask or share.

Posts here are written by users, not the PopNx team.

User reviews

No reviews yet

Compared with others in Docs, sheets & office worki

More stars than 86% of the other 3877 servers in this category
Published to the registry more recently than 1% of the other 3877 servers in this category
Basic checks equal to or better than 100% of the other 3877 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 Rosetta MCP safe?

It passed 3 of 3 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: ANTHROPIC_API_KEY

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 4 months ago, and the latest version (0.1.1) reached the registry 10 months ago.

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: Puter MCP, XcodeBuildMCP, XcodeBuildMCP

Others in the same category

Servers in the same category from other makers, sorted by stars.

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

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Runs in the cloud✓ service owner · puter.com

How to connect

XcodeBuildMCP

XcodeBuildMCP provides tools for Xcode project management, simulator management, and app utilities.

by getsentryWidely used↓ 130.5K/wk shared package★ 6.6KUpdated 4 months ago

Runs on your computer✓ service owner · xcodebuildmcp.com

Install

XcodeBuildMCP

XcodeBuildMCP provides tools for Xcode project management, simulator management, and app utilities.

by cameroncookeWidely used↓ 130.5K/wk shared package★ 6.6KUpdated 14 months ago

Runs on your computer

Install

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.

Rosetta

AI-powered Excel translation CLI. Translates Excel files while preserving formatting, formulas, and data integrity.

What it does

Rosetta translates all text in your Excel files using Claude AI, without breaking:

Formulas and calculations
Formatting (fonts, colors, borders)
Merged cells and layouts
Charts and images
Dropdown menus
Rich text (bold, italic within cells)

Prerequisites

You need a Claude API key from Anthropic.

Go to console.anthropic.com
Create an account (or sign in)
Go to API Keys and create a new key
Copy the key (starts with sk-ant-...)

Note: API usage is billed by Anthropic. See anthropic.com/pricing for current rates. Translating a typical Excel file costs a few cents.

Installation

Install from PyPI:

pip install rosetta-xl

Then set your API key:

# Linux/macOS

export ANTHROPIC_API_KEY=sk-ant-your-key-here

Windows (Command Prompt)

set ANTHROPIC_API_KEY=sk-ant-your-key-here

Windows (PowerShell)

$env:ANTHROPIC_API_KEY="sk-ant-your-key-here"

Or create a .env file in your working directory:

ANTHROPIC_API_KEY=sk-ant-your-key-here

Usage

# Translate to French

rosetta input.xlsx -t french

Translate to Spanish with custom output name

rosetta input.xlsx -t spanish -o translated.xlsx

Specify source language (auto-detected by default)

rosetta input.xlsx -s english -t german

Translate only specific sheets

rosetta input.xlsx -t french --sheets "Sheet1" --sheets "Data"

Add context for better translations (e.g., domain-specific terms)

rosetta input.xlsx -t french -c "Medical terminology document"

Options

Option	Short	Description
`--target-lang`	`-t`	Target language (required)
`--source-lang`	`-s`	Source language (auto-detect if omitted)
`--output`	`-o`	Output file path (default: `input_translated.xlsx`)
`--sheets`		Sheets to translate (can repeat, default: all)
`--context`	`-c`	Domain context for better accuracy
`--batch-size`	`-b`	Cells per API call (default: 50)

Examples

Translate a price list to multiple languages:

rosetta prices.xlsx -t french -o prices_fr.xlsx

rosetta prices.xlsx -t german -o prices_de.xlsx rosetta prices.xlsx -t spanish -o prices_es.xlsx

Translate a medical form with context:

rosetta patient_form.xlsx -t french -c "Medical intake form with clinical terminology"

Translate only the "Questions" sheet:

rosetta survey.xlsx -t japanese --sheets "Questions"

Troubleshooting

"ANTHROPIC_API_KEY not set"

Make sure you've exported the key: export ANTHROPIC_API_KEY=sk-ant-...
Or create a .env file with the key

"Invalid API key"

Check that your key starts with sk-ant-
Make sure you copied the full key from console.anthropic.com

"Rate limit exceeded"

You've hit Anthropic's rate limits. Wait a minute and try again
Or reduce batch size: rosetta input.xlsx -t french -b 20

How it works

Extracts all text cells from your Excel file
Sends text to Claude AI for translation (in batches)
Writes translations back, preserving all formatting
Saves the translated file

Your original file is never modified.

Web App & API

Rosetta also includes a web application and REST API for browser-based translations.

Running the API server

# Install with uv (recommended)

uv sync

Start the server

uv run uvicorn rosetta.api:app --reload

Or with pip

pip install -e . uvicorn rosetta.api:app --reload

The API runs at http://localhost:8000 by default.

Running the frontend

cd frontend

npm install npm run dev

The frontend runs at http://localhost:5173 and connects to the API.

API Endpoints

Endpoint	Method	Description
`/translate`	POST	Translate an Excel file (returns file)
`/translate-stream`	POST	Translate with real-time progress via SSE
`/estimate`	POST	Get cell count and cost estimate
`/sheets`	POST	List sheet names in a file
`/count`	POST	Count translatable cells
`/preview`	POST	Preview cells that will be translated
`/health`	GET	Health check

Real-time Progress

The /translate-stream endpoint uses Server-Sent Events (SSE) to stream translation progress in real-time. The frontend automatically falls back to the standard /translate endpoint on networks that don't support SSE (e.g., corporate proxies).

MCP Integration

Rosetta includes MCP (Model Context Protocol) servers for both Claude Desktop and Claude Web.

For Claude Desktop (Local)

Add to your Claude Desktop config (~/Library/Application Support/Claude/claude_desktop_config.json):

"mcpServers": { "rosetta": { "command": "uv", "args": ["run", "--directory", "/path/to/rosetta", "python", "-m", "rosetta.api.mcp"], "env": { "ANTHROPIC_API_KEY": "your-key-here" } } } }

Usage: Use local file paths for best results.

Translate ~/Downloads/report.xlsx to French

For Claude Web (Browser)

Note: Claude.ai does not yet support custom MCP servers in the browser (as of January 2026).

Current recommendation: Use the web app for browser-based translations.

See MCP_USAGE.md for detailed instructions.

Requirements

Python 3.11+
Anthropic API key

License

MIT

Rosetta MCP

What it does

Install

Install Node.js

Sign up and create a Rosetta MCP key

Open the Claude desktop app’s settings file

Paste these settings and save the file

Quit Claude and open it again

Try it

What you can do instead

Install Node.js

Sign up and create a Rosetta MCP key

Open Terminal

Paste this command and press Enter

Type /mcp in Claude Code

Try it

Install Node.js

Sign up and create a Rosetta MCP key

Click this button to open Cursor

Fill in your key

Open the AI chat in Cursor in Agent mode

Try it

Install Node.js

Sign up and create a Rosetta MCP key

Click this button to open VS Code

Fill in your key

Open the AI chat in VS Code in Agent mode

Try it

Installed on your computer

Values you fill in

At a glance

Which apps can use it

Related guides

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

Discussion

User reviews

Compared with others in Docs, sheets & office worki

Common questions

Others in the same category

Puter MCP

XcodeBuildMCP

XcodeBuildMCP

README from the maker

Rosetta

What it does

Prerequisites

Installation

Windows (Command Prompt)

Windows (PowerShell)

Usage

Translate to Spanish with custom output name

Specify source language (auto-detected by default)

Translate only specific sheets

Add context for better translations (e.g., domain-specific terms)

Options

Examples

Troubleshooting

How it works

Web App & API

Running the API server

Start the server

Or with pip

Running the frontend

API Endpoints

Real-time Progress

MCP Integration

For Claude Desktop (Local)

For Claude Web (Browser)

Requirements

License