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?

View the full interactive pattern with live preview and copy the source code.

View the pattern on desktop

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