Excel Plugin

Cloud runtime, native task pane, one agent contract.

The Excel add-in is now part of the product surface. It is not a separate toy client. It syncs the live workbook into the same cloud runtime, supports Focus-style scoped edits, and applies audited changes back into Excel.

Download cloud manifest
Cloud Excel must use this manifest. A manifest containing localhost will be blocked by Office on the web.
Open task pane preview
Live workbook sync

The add-in reads the active workbook into the same WorkbookData contract used by the web app.

Focus-scoped edits

Current selection can become a hard edit boundary, and the server rejects writes outside that region.

Shared cloud runtime

The task pane uses the same `/api/agent` and provider-health routes as the web product.

Audited action replay

Returned actions are applied back into Excel, then the workbook is re-synced so the pane stays honest.

Install Excel Agent

Pick where Excel runs.

Download manifest
Excel on the web
Best for most users
  1. 1. Open Excel in the browser and open a workbook.
  2. 2. Go to Home, Add-ins, More Add-ins, Upload My Add-in.
  3. 3. Upload the XML manifest from this page.
Get XML
Excel for Mac
Desktop sideload

The installer places the deployed manifest in Excel's sideload folder, quits Excel, then opens Excel again.

A website cannot silently install a desktop Office add-in or launch desktop Excel. macOS and browsers require the user to run a local installer or paste a Terminal command.

Download Mac installer
Show terminal command
curl -fsSL "https://excel.jpdz.app/excel-addin/install-mac.command" -o /tmp/install-excel-agent.command && chmod +x /tmp/install-excel-agent.command && open /tmp/install-excel-agent.command

After running it, open a workbook, click Edit if the file is read-only, then choose Home, Add-ins, Excel Agent. Some Mac builds show it under Developer Add-ins.

Team rollout
Best at scale

For real users across a company, publish this manifest through Microsoft 365 admin center central deployment. Users then see Excel Agent without manual sideloading.

Admin center path: Integrated apps, Upload custom apps, Office Add-in, then upload this manifest.
Admin docs
If Excel still shows the blocked localhost message, it is opening an old cached manifest. Remove the old Excel Agent add-in, then upload this deployed manifest again.
Manifest URL: https://excel.jpdz.app/excel-addin/manifest.xml