Charts
A number is only as good as the picture you put it in.
Two open-source Claude Code skills that build charts Excel does not want to build. Both ship free reference workbooks — live files where the shaded cells are typed inputs and everything else is a formula, so pasting your own numbers over them redraws the charts — and a written guide for building the same thing by hand, so the files are worth having whether or not you ever run the skill. Everything here is free to use and free to modify.
Excel + Claude Code skill · Free to use, free to modify
Small multiples in Excel that actually share a scale
A grid of charts built as one native Excel chart object rather than as R × C copies whose axes quietly drift apart.
- Excel
- Claude Code skill
- Small multiples
Excel + Claude Code skill · Free to use, free to modify
Management reports where the formatting carries meaning
All seventeen IBCS® templates as native Excel charts with live formulas, and as self-contained SVG, on two datasets — the Institute's published example figures and a real insurer's SEC filings.
- Excel
- IBCS®
- Claude Code skill
- SVG
- SEC filings