# dr-drilldown

> Claude/Codex skill by [@datarails](https://omgskills.com/library/datarails/index.md) · 3 stars · Updated 2026-09-22

Drill down on a cell in the Datarails Excel Add-in to see underlying detail — also the skill to use when the user asks to "explain the variance", "explain this number", "what's driving this", "what's behind this cell", or break a figure into its line items. In a live Excel context (add-in agent bridge available) DR formula cells drill through the add-in's own drill-down; with an .xlsx file (Claude Code) it resolves DR.GET formulas, reads hidden "dr control" filters, queries Datarails, and validates totals; with no workbook at all, the user can paste a DR.GET formula or give structured filters (no-file mode). Self-contained — discovers the client's financials table and fields on its own, no profile or setup step required.

## Install

```sh
git clone https://github.com/Datarails/dr-claude-code-plugins-re /tmp/dr-claude-code-plugins-re && ln -s /tmp/dr-claude-code-plugins-re/skills/drilldown ~/.claude/skills/dr-drilldown
```

## From README

DR.GET Drill-Down Drill into any cell that contains Datarails data to see the underlying line-item detail. Works with: Cells containing a DR formula directly (DR.GET/DR.QTD/DR.YTD/DR.MTD/… — any DR function) Cells containing an Excel formula (SUM, +, -, etc.) whose precedents are DR formula cells Three paths. In a live Excel context (add-in agent bridge available — Claude for Excel / an open workbook with the add-in), drilling a DR formula cell goes through the add-in's own drill-down via the agent bridge (Step 0 below) — the add-in resolves filters, dates, and totals natively. (Excel context is about the bridge being present, not whether the workbook is connected.) The MCP/openpyxl workflow (Phases 0–5) is the file fallback for Claude Code with an .xlsx file and no bridge. And with no workbook at all, no-file mode (below) takes a pasted DR.GET formula, a plain-language description, or structured filters straight from chat.

## Links

- HTML page: https://omgskills.com/library/datarails/dr-claude-code-plugins-re/skills/drilldown/
- GitHub: https://github.com/Datarails/dr-claude-code-plugins-re
- Author: [@datarails](https://omgskills.com/library/datarails/index.md)

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