KitchenSink4XL MCP server

<!-- mcp-name: io.github.KitchenSink4AI/kitchensink4xl -->

🔌 KitchenSink4XL Community Edition

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Read and edit Excel workbooks with your AI assistant, and know which numbers are calculated, cached or missing.

Read and edit real Excel workbooks from Claude Code, Codex CLI, Copilot CLI or any other MCP client that runs local tools. KitchenSink4XL connects your assistant to .xlsx files with tools for formulas, tables and data checks, and it tells you whether a value was calculated, cached or never computed before you put it in a report. Files are processed on your computer; the only thing that leaves it is what your AI app sends to its own provider. The Community edition is free under the AGPL. The Business edition adds a Windows installer, a signed update channel, a license your company can approve and support.

Works on: Windows, macOS and Linux for the file tools. Recalculation, pivots and the other Excel-powered features need Windows with Microsoft Excel installed.

Install

Pick the route for your AI app. The commands go in PowerShell on Windows or a terminal on macOS and Linux, not into an AI chat. The package routes need Python 3.12 or newer.

Claude Desktop

Install uv, then quit and reopen Claude Desktop. Download the .mcpb file from KitchenSink4XL releases. In Claude Desktop open Settings, then Extensions, then Advanced settings, then Install extension, and choose the file. The bundle fetches the Python package the first time it starts, so the first launch needs a network connection. Restart your session and check that the tools show as connected.

Claude Code or Codex CLI

Install uv, then run the line for your app and restart your session:

claude mcp add xl -s user -- uvx kitchensink4xl

codex mcp add xl -- uvx kitchensink4xl

Any other local MCP client

Use uvx as the command and kitchensink4xl as its argument, or install the package and use kitchensink4xl as the server command:

pip install kitchensink4xl

Then follow your client's guide for adding a local MCP server. Installing the package on its own does not connect it to an AI app.

Business edition

Compare the editions on the pricing page. Already purchased? Your Windows installer and download link are in your license portal.

What it can do

69 tools with every pack enabled, including the pack controls. The default lite surface has 40.

• See whether a value was calculated, cached or missing before you use it.
• Read a range or summarize a large table without pulling every row.
• Write formulas, values and number formats into an existing workbook.
• Add or remove rows and columns while supported references update.
• Sort, filter and format tables for a client or a colleague.
• Import and export CSV and JSON.
• Check a workbook for structural problems before sharing it.
• Use installed Excel on Windows for recalculation, pivots and PDF export.

What is available depends on the packs you enable and the applications installed. The full tool reference is below.

Business edition

Shortened. The full README is on GitHub.