Excel MCP Server is an open-source Model Context Protocol server that lets AI assistants create and edit real Excel workbooks. Published on GitHub, it has gathered about 4,253 stars and is under active development in 2026. Connect it to clients such as Claude, Cursor, or Codex and the assistant can build spreadsheets for you โ writing formulas, formatting cells, generating charts, and assembling PivotTables โ all without Microsoft Excel needing to be installed.
The server is written in Python on top of openpyxl and exposes spreadsheet operations as MCP tools that any compatible client can call. It supports both local stdio connections for desktop AI apps and a streamable HTTP mode for remote or shared deployments. Beyond basic cell editing, it handles the features people actually use in Excel: workbook and sheet management, ranges, styles, conditional logic through real formulas, slicers, and even VBA-related workflows, so generated files open cleanly in Excel, LibreOffice, or Google Sheets. Reports that once took an afternoon of manual copying and formatting can be assembled from a single plain-language prompt.
Excel MCP Server is free and open source under the MIT license. You can download it from GitHub, run it locally or on your own server, and use it in personal or commercial projects without paying anything.
Excel MCP Server is for analysts, operators, and developers who live in spreadsheets and want their AI assistant to do the mechanical work โ generating reports, cleaning data into structured sheets, and building formatted workbooks from a plain-language request.