Excel MCP Server

A Model Context Protocol (MCP) server that reads and writes MS Excel data.

Features

• Read/Write text values

• Read/Write formulas

• Create new sheets

🪟Windows only:

• Live editing

• Capture screen image from a sheet

For more details, see the tools section.

Related MCP server: MCP Sheet Parser

Requirements

• Node.js 20.x or later

Supported file formats

• xlsx (Excel book)

• xlsm (Excel macro-enabled book)

• xltx (Excel template)

• xltm (Excel macro-enabled template)

Installation

Installing via NPM

excel-mcp-server is automatically installed by adding the following configuration to the MCP servers configuration.

For Windows:

{
    "mcpServers": {
        "excel": {
            "command": "cmd",
            "args": ["/c", "npx", "--yes", "@negokaz/excel-mcp-server"],
            "env": {
                "EXCEL_MCP_PAGING_CELLS_LIMIT": "4000"
            }
        }
    }
}

For other platforms:

{
    "mcpServers": {
        "excel": {
            "command": "npx",
            "args": ["--yes", "@negokaz/excel-mcp-server"],
            "env": {
                "EXCEL_MCP_PAGING_CELLS_LIMIT": "4000"
            }
        }
    }
}

Installing via Smithery

To install Excel MCP Server for Claude Desktop automatically via Smithery:

npx -y @smithery/cli install @negokaz/excel-mcp-server --client claude

excel_describe_sheets

List all sheet information of specified Excel file.

Arguments:

• fileAbsolutePath

  • Absolute path to the Excel file

excel_read_sheet

Read values from Excel sheet with pagination.

Arguments:

• fileAbsolutePath

  • Absolute path to the Excel file

• sheetName

  • Sheet name in the Excel file

• range

  • Range of cells to read in the Excel sheet (e.g., "A1:C10"). [default: first paging range]

• showFormula

  • Show formula instead of value [default: false]

• showStyle

  • Show style information for cells [default: false]

excel_screen_capture

[Windows only] Take a screenshot of the Excel sheet with pagination.

Arguments:

• fileAbsolutePath

  • Absolute path to the Excel file

• sheetName

  • Sheet name in the Excel file

• range

  • Range of cells to read in the Excel sheet (e.g., "A1:C10"). [default: first paging range]

excel_write_to_sheet

Write values to the Excel sheet.

Arguments:

• fileAbsolutePath

  • Absolute path to the Excel file

• sheetName

  • Sheet name in the Excel file

• newSheet

  • Create a new sheet if true, otherwise write to the existing sheet

• range

  • Range of cells to read in the Excel sheet (e.g., "A1:C10").

• values

  • Values to write to the Excel sheet. If the value is a formula, it should start with "="

excel_create_table

Create a table in the Excel sheet

Arguments:

• fileAbsolutePath

  • Absolute path to the Excel file

• sheetName

  • Sheet name where the table is created

• range

  • Range to be a table (e.g., "A1:C10")

• tableName

  • Table name to be created

excel_copy_sheet

Copy existing sheet to a new sheet

Arguments:

• fileAbsolutePath

  • Absolute path to the Excel file

• srcSheetName

  • Source sheet name in the Excel file

• dstSheetName

  • Sheet name to be copied

excel_format_range

Format cells in the Excel sheet with style information

Arguments:

• fileAbsolutePath

  • Absolute path to the Excel file

• sheetName

  • Sheet name in the Excel file

• range

  • Range of cells in the Excel sheet (e.g., "A1:C3")

• styles

  • 2D array of style objects for each cell. If a cell does not change style, use null. The number of items of the array must match the range size.

  • Style object properties:

    • border: Array of border styles (type, color, style)

    • font: Font styling (bold, italic, underline, size, strike, color, vertAlign)

    • fill: Fill/background styling (type, pattern, color, shading)

    • numFmt: Custom number format string

    • decimalPlaces: Number of decimal places (0-30)

You can change the MCP Server behaviors by the following environment variables:

EXCEL_MCP_PAGING_CELLS_LIMIT

The maximum number of cells to read in a single paging operation.
[default: 4000]

License

Copyright (c) 2025 Kazuki Negoro

excel-mcp-server is released under the MIT License