CmdCal

XLSX FAQ

Does CmdCal XLSX Generate Real Excel Workbooks?

Yes. The engine produces native OOXML .xlsx files, not CSV-with-formatting or browser-only spreadsheet data structures.

Can I Use Existing Workbook Templates?

Yes, with an important qualifier: start from a clean template and inspect it first.

The supported flow is:

  1. parseTemplate(...)
  2. inspectTemplate(...)
  3. assembleFromTemplate(...)

That keeps named ranges, tables, and sanitization actions explicit.

Does It Support Formulas?

Yes. CmdCal XLSX supports formula pass-through, cached values, named-range resolution, classic array formulas, and a supported cached-evaluation subset.

Does It Support Tables, Filters, And Print Setup?

Yes. Native tables, auto-filters, print setup, print area, print titles, merges, freeze panes, validations, and hyperlinks are all part of the supported engine surface.

Can It Repair Broken Workbooks?

It can perform conservative repairs for a defined set of workbook issues, including worksheet dimensions, invalid hyperlinks, data-validation ranges, merges, duplicate table names, broken table refs, and several package-level integrity issues.

It is intentionally conservative. If the workbook is badly damaged, the engine should return findings instead of pretending to fix everything silently.

Does It Stream Large Workbook Writes?

Not yet as a public renderStream(...) surface. The engine does support preflight, planning, chunk-aware worksheet emission, and render metrics today, but the fully backpressure-aware public streaming API remains a follow-up item.

Which Spreadsheet Apps Are Supported?

The workbook format targets Excel-compatible OOXML. The engine also keeps manual validation packs for Google Sheets, Apple Numbers, and LibreOffice workflows, but cross-app desktop verification still depends on the actual target apps being available.

Is It A Good Fit For Agent Workflows?

Yes. That is one of the clearer strengths of the product because the workbook contract is structured JSON and the MCP server already exposes spreadsheet generation, validation, and repair tools.

Is It Trying To Replace Every Spreadsheet Utility?

No. CmdCal XLSX is strongest as generation infrastructure. If you need broad spreadsheet parsing or conversion utilities, it can live alongside lower-level tools rather than replace them outright.

Where Should I Start?