Formats

Pattern

Agent XLSX Artifact

Download-first Excel artifact pattern. The agent streams CSV through a tool call, renders a spreadsheet preview, and exports a real .xlsx file with SheetJS.

IntermediateJun 2026View the full pattern on desktop
Agent XLSX Artifact preview

Problems solved

  • Stream workbook CSV from an agent tool call
  • Preview tabular output before download
  • Export a real .xlsx file client-side with SheetJS

Use cases

  • Excel report generation
  • Budget and forecast spreadsheet exports
  • Pipeline trackers and data exports
  • Download-first spreadsheet agents

AI SDK APIs

streamTextcreateUIMessageStreamgatewaytooluseChat

Tags

aiexcelxlsxspreadsheetoffice-docsstreamingai-sdkartifacts

Requirements

Node.js
24+
Memory
256MB
Other
  • Vercel AI Gateway API key

Environment variables

External services

openaiupstash

Ready to use?

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