go-excel-mcp-server# Go Excel MCP Server

A powerful MCP (Mark3labs Control Protocol) server that provides comprehensive Excel file manipulation capabilities using the excelize Go library.

Features

File Operations

• Create new Excel workbooks
• Read data from worksheets
• Write data to worksheets
• Get detailed workbook metadata

Worksheet Management

• Create new worksheets
• Delete existing worksheets
• Rename worksheets

Advanced Formatting

• Comprehensive cell formatting including:
  • Font styles (bold, italic, underline)
  • Text alignment and rotation
  • Number formatting (currency, percentages, dates)
  • Cell borders and colors
  • Background patterns and fills
  • Cell merging
  • Cell protection/locking
• Conditional formatting support

Installation

1. Ensure you have Go installed (version 1.16 or higher recommended)
2. Clone the repository (if applicable)
3. Install dependencies:

   go mod tidy
   

4. Build the server:

   go build
   

Usage

Starting the Server

Run the compiled binary to start the MCP server in stdio mode:

./excel-tools-server

How set up with cline

"mcpServers": {
  "excel_go": {
      "disabled": false,
      "timeout": 60,
      "command": "excel_mcp_go_server.exe",
      "args": [],
      "transportType": "stdio"
  }
}

MCP Tools Available

1. Create Workbook

Creates a new Excel workbook at the specified path.

Parameters:

• filepath (string, required): Path where to create the new Excel file

Example:

{"filepath": "output.xlsx"}

2. Write Data to Excel

Writes tabular data to a specified worksheet starting from a given cell.

Parameters:

• filepath (string, required): Path to the Excel file
• sheet_name (string, required): Worksheet name
• data (array, required): List of lists (sublists are rows)
• start_cell (string, optional): Starting cell (default: "A1")

Example:

{
  "filepath": "output.xlsx",
  "sheet_name": "Data",
  "data": [["Name", "Age"], ["Alice", 25], ["Bob", 30]],
  "start_cell": "B2"
}

3. Read Data from Excel

Reads all data from a specified worksheet.

Parameters:

• filepath (string, required): Path to the Excel file
• sheet_name (string, required): Worksheet name to read

Example:

{"filepath": "output.xlsx", "sheet_name": "Data"}

4. Create Worksheet

Adds a new worksheet to an existing workbook.

Parameters:

• filepath (string, required): Path to the Excel file
• sheet_name (string, required): Name for the new worksheet

Example:

{"filepath": "output.xlsx", "sheet_name": "NewSheet"}

5. Delete Worksheet

Removes a specified worksheet from a workbook.

Parameters:

• filepath (string, required): Path to the Excel file
• sheet_name (string, required): Worksheet name to delete

Example:

{"filepath": "output.xlsx", "sheet_name": "OldSheet"}

6. Rename Worksheet

Changes the name of an existing worksheet.

Parameters:

• filepath (string, required): Path to the Excel file
• old_name (string, required): Current worksheet name
• new_name (string, required): New worksheet name

Example:

{
  "filepath": "output.xlsx",
  "old_name": "Sheet1",
  "new_name": "MainData"
}

7. Get Workbook Metadata

Retrieves metadata about a workbook including sheet list and ranges.

Parameters:

• filepath (string, required): Path to the Excel file
• include_ranges (boolean, optional): Whether to include range information

Example:

{"filepath": "output.xlsx", "include_ranges": true}

8. Format Range

Applies comprehensive formatting to a cell range.

Parameters:

• filepath (string, required): Path to the Excel file
• sheet_name (string, required): Worksheet name
• start_cell (string, required): Top-left cell of range
• end_cell (string, optional): Bottom-right cell (defaults to start_cell)
• Comprehensive formatting options including:
  • Font styles (bold, italic, underline)
  • Text alignment (horizontal/vertical)
  • Number formats
  • Cell borders and colors
  • Background patterns
  • Cell merging
  • Text wrapping
  • Cell protection

Example:

{
  "filepath": "output.xlsx",
  "sheet_name": "Data",
  "start_cell": "A1",
  "end_cell": "D10",
  "bold": true,
  "font_size": 12,
  "bg_color": "FFFF00",
  "border_type": "thin",
  "number_format": "$#,##0.00"
}

Error Handling

All tools return meaningful error messages in case of failures, including:

• File not found or inaccessible
• Invalid parameters
• Worksheet operations failures
• Formatting errors

Dependencies

• github.com/mark3labs/mcp-go - MCP protocol implementation
• github.com/xuri/excelize/v2 - Excel file manipulation library

License