Spreadsheet Automation Runtime

An implementation of the Model Context Protocol (MCP) runtime environment designed to deliver advanced spreadsheet file processing functionalities, completely independent of needing Microsoft Excel installed. This service empowers users to author new workbooks, process datasets, apply visual aesthetics, and invoke complex spreadsheet features.

Prerequisites

• Execution environment must satisfy Python version 3.10 or higher.
• Requires MCP SDK version 1.2.0 or newer.
• Dependency on OpenPyXL library, version 3.1.2 or later.

Operational Modules

Data Access Endpoints (Resources)

The runtime manages all spreadsheet operations primarily through the OpenPyXL library:

• Construction and alteration of spreadsheet document objects.
• Control over individual sheets and defined cell ranges.
• Application of visual formatting parameters and stylistic attributes.
• Capability to render data visualizations (charts) and construct summary aggregates (pivot tables).

Utility Functions (Tools)

This runtime exposes a robust suite of utilities for spreadsheet manipulation. Comprehensive documentation detailing every exposed function, its required arguments, and practical examples is available in the [TOOLS.md] documentation file.

The available functions encompass:

• Lifecycle management for documents and worksheets.
• Reading data from and writing data to cells.
• Styling and visual conditioning of document elements.
• Generation of charts and other visual data representations.
• Configuration and execution of summary tables for data aggregation.

Consult [TOOLS.md] for the complete catalog of operations.

Key Capabilities

• Complete Document Fidelity: Broad functional coverage mirroring standard spreadsheet capabilities.
• Data Lifecycle Management: Tools for input, extraction, and transformation of cell contents.
• Advanced Constructs: Support for graphical reporting elements and analytical summary tables.
• Robust Error Reporting: Provision of detailed, actionable feedback upon operational failure.

Deployment Instructions

Environment Variable Setup

The runtime behavior can be tuned using the subsequent environment variables:

• EXCEL_FILES_PATH: Specifies the storage location for generated or processed spreadsheet artifacts (default path is ./excel_files).

Configuration examples:

Via Windows Command Prompt (CMD):

set EXCEL_FILES_PATH=C:\path\to\excel\files
uv run excel-mcp-server

Via Windows PowerShell:

$env:EXCEL_FILES_PATH="C:\path\to\excel\files"
uv run excel-mcp-server

Via Linux/macOS Shell:

export EXCEL_FILES_PATH=/path/to/excel/files
uv run excel-mcp-server

Or within the Claude Desktop configuration file (JSON format):

{
  "mcpServers": {
    "excel": {
      "command": "uv run excel-mcp-server",
      "transport": "sse",
      "env": {
        "EXCEL_FILES_PATH": "/path/to/excel/files"
      }
    }
  }
}

Initiating the Runtime Service

To commence operation of the server:

uv run excel-mcp-server

The service will initialize in Server-Sent Events (SSE) mode, awaiting inbound connections from compliant MCP client agents.

Integration with Cursor IDE

Once the service is running, establish a connection within the Cursor IDE to the designated SSE interface:

http://localhost:8000/sse

Once connected, the spreadsheet automation utilities become accessible to the integrated agent.

Refer to [TOOLS.md] for comprehensive documentation on available functions and their proper utilization.

Licensing Information

This software is distributed under the terms specified in the MIT License. See the accompanying [LICENSE] file for complete details.

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