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Introduce executeJSCode Function for Filesystem MCP Server without the need to have external files in context window #740

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@freiit freiit commented Mar 5, 2025

New function executeJSCode that lets run JavaScript against files/directories in the MCP server, not only with the analysis tool. Files are not automatically loaded into the context window to enable the handling of large files.

Key details

  • JS execution with lodash, mathjs, PapaParse, XLSX libraries
  • Robust error handling for sync/async code
  • Proper Node.js environment with fs, path access
  • No context pollution: large files won't bloat context, must be explicitly read

The function expands MCP capabilities for complex file analysis and data processing.

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