The spreadsheet framework built for agents — write the model as React, export a live .xlsx. The third medium, after open-slide and open-doc.
Skill Claude CodeCodex
Use this skill when the user has left notes on cells in the open-sheet viewer and wants them applied — "apply my comments", "do the notes I left", "I marked some things up". Walks every @sheet-comment marker in the workbook source, makes the edit each one asks for, and clears the marker.
Skill Claude CodeCodex
Use this skill when the user wants to create, draft, build, or generate a new spreadsheet, financial model, budget, forecast, dashboard, tracker, or register in this open-sheet workspace. Triggers on phrases like "build me a budget model", "make a spreadsheet for X", "draft an FY26 forecast", "put this data in a…
Skill Claude CodeCodex
Use this skill when the user wants a reusable house style for open-sheet workbooks — "make a theme with our brand colours", "all our spreadsheets should look like this", "create a corporate template". Writes themes/ .md and an optional demo workbook the gallery previews.
Skill Claude CodeCodex
Use this skill to find out which workbook, sheet, and cell the user is currently looking at in the open-sheet viewer, so an instruction like "make this bold" or "why is this wrong?" resolves to the right place without asking. Use it whenever the user refers to "this cell", "this sheet", "the one I'm looking at", or…
Skill Claude CodeCodex
Technical reference for writing open-sheet workbooks — the file contract, the component surface, references and formulas, number formats, and the rules that keep a workbook a live model. Use this whenever writing or editing a file under sheets/ /index.tsx. The workflow for drafting a new workbook from scratch lives in…
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: