Spreadsheet editor engine.
Full formula engine with 4 AI endpoints and 3 export formats. Per-save version history, real-time collaboration, and Box-backed immutable snapshots.
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export formats (XLSX, CSV, PDF)
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AI endpoints (formula, fill, classify, query)
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MB max import size
∞
version snapshots per spreadsheet
1 engine. 100 rows default. Box-backed storage.
Calisto Sheets runs a dedicated spreadsheet engine client-side for the data model, formula calculations, and canvas rendering. Content persists as JSON workbook snapshots in Calisto Box.
- Client-side spreadsheet engine with canvas renderer
- Full formula calculation engine with autocomplete
- JSON workbook snapshots stored in Calisto Box
- Real-time collaboration with avatar presence dots
- Default workbook: 1 sheet, 100 rows, 26 columns
- Presigned download URLs with 300s TTL
Editor renders. Box stores. Snapshots persist.
The spreadsheet engine runs client-side for the workbook model, formula calculations, and canvas rendering. Every save serializes to a JSON snapshot in Calisto Box.
4 endpoints. Formula generation. Smart fill. Column classification.
Generate formulas from plain English, auto-complete columns by pattern, classify data types on import, and ask questions about your data. Four smart endpoints on one spreadsheet surface.
- Natural language to formula conversion
- Excel-compatible syntax output
- One-sentence explanation per formula
4 creation paths. Account templates. Brand kit theming.
Start blank, pick a template, import a file, or prompt Calisto AI. Account-level template library with isTemplate flag. Theme configuration syncs from Ethos brand kit.
- Account-level template library via isTemplate flag
- 4 creation paths: blank, template, import, AI auto-create
- XLSX/CSV import via file picker (?import=1)
- AI auto-create via URL parameter (?ai=prompt)
- Account theming: templateName + primaryColor
- Brand kit fallback from Ethos
XLSX in. XLSX out. Box-backed immutability.
Import up to 50 MB. Export as XLSX, CSV, or PDF with every save written as an immutable Box snapshot.
3 import formats. 3 export formats. 50 MB ceiling.
Import .xlsx, .xls, or .csv files up to 50 MB. Export as XLSX or CSV client-side via the spreadsheet engine. Export as PDF server-side with formatted tables and page numbers.
- Import XLSX, XLS, or CSV up to 50 MB
- File stored in Box on upload, rendered client-side
- XLSX export: client-side via spreadsheet engine
- CSV export: client-side, single active sheet
- PDF export: server-side with formatted tables, A4 portrait
- Multi-sheet PDF with header styling and page numbers
Every save is a snapshot. Every snapshot is retrievable.
Each save creates a new immutable workbook snapshot in Box with a version record. Monotonically increasing version numbers. Changelog text per save. Past versions never overwritten.
- Per-save JSON workbook snapshots in Box
- Monotonically increasing versionNumber
- Optional changelog text per version record
- File size and format version tracked per snapshot
- HEAD = editorFiles.boxFileId (always latest)
- Past versions never overwritten
Brand Check. Search. Box storage. One surface.
Ethos Integrity scans cell content for brand compliance. The search index finds data across every spreadsheet in the account.
4 connections. Brand Check. Search. Box. Notifications.
Sheets connects to Ethos Integrity for brand compliance, the search index for cross-spreadsheet discovery, Box for centralized storage, and the notification system for export alerts.
- Brand Check via Ethos Integrity for cell content
- Full-text content search with top-K results
- Shared Box storage layer with Docs and Slides
- Export completion notifications with download links
- Folder hierarchy via parentFolderId
- editorType "sheet" scopes all queries
High-Performance Ops. Zero Monthly Overhead.
Get all 15 Core modules at no monthly cost. You only pay 2% of processed revenue.
Sheets
Spreadsheet editing with formulas and collaboration.
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