xlsx-code-mode

Setup

Files are cached server-side by content hash so repeated operations skip re-upload.

The CLI automatically applies per-attempt request timeouts and retries transient API failures (408, 429, 500, 502, 503, 504, plus timeout/network errors). Non-retryable 4xx responses fail immediately.

The CLI automatically converts older .xls files to .xlsx, so it fully supports all Excel file formats.

Quick Reference

# Create a new workbook from scratch (.xlsx only)
witan xlsx exec model.xlsx --create --save --stdin <<'WITAN'
await xlsx.addSheet(wb, "Inputs")
await xlsx.setCells(wb, [{ address: "Inputs!A1", value: "Revenue" }])
return await xlsx.listSheets(wb)
WITAN