Inspect and modify Excel workbooks via sandboxed JavaScript execution.
npx skills add https://github.com/witanlabs/witan-cli --skill xlsx-code-mode
Please help me install this Agent Skill. Skill: xlsx-code-mode Source: https://github.com/witanlabs/witan-cli/tree/main/skill/xlsx-code-mode Command: npx skills add https://github.com/witanlabs/witan-cli --skill xlsx-code-mode
Reading, exploring, understanding, and modifying Excel workbooks (.xlsx, .xlsm) is often blocked by non-text tools. This skill enables server-side inspection and safe edits via a sandboxed JavaScript interface, bypassing the limitations of basic file viewers.
Ask me to inspect a workbook by name, list sheets, read cells or ranges, or trace formulas using witan xlsx exec.
High-intent search queries and answers about installing and using this skill.
You can read Excel cells and ranges programmatically by executing sandboxed JavaScript against the workbook via witan xlsx exec, which safely extracts sheet data, cell values, and formulas server-side without altering source files.
Yes, you can trace formula dependencies in an xlsx workbook by scripting against the file to inspect formula precedents and dependents, allowing you to map and understand the full calculation flow.
Yes, this approach supports what-if edits without modifying the original Excel file by applying controlled cell, row, and column modifications inside a sandboxed write-enabled session that leaves source files untouched.
The best way to inspect and map sheets in xlsx or xlsm files from a server environment is using a sandboxed JavaScript execution interface that lists sheets and reads workbook structures robustly with timeout and error handling.
Limitations when scripting against Excel workbooks in a server-side sandbox include operating within robust timeout and error handling constraints, where safe reading and range operations are controlled to prevent altering source files.
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