Install monceai for Excel

Click your platform. Trust the add-in. Type =PREDICT.

Have Claude Code? Hand the install to an agent →

Windows Excel

Excel 2019, 2021, or Microsoft 365. One click opens Excel with the trust dialog.

Install on Windows

Excel for Mac

The ms-excel: deep link is Windows-only. Use the dev shortcut below — one terminal command sideloads the add-in into the watched folder.

Use the curl shortcut ↓

Excel on the web

Microsoft 365 web — Insert → Add-ins → Upload My Add-in → paste the manifest URL.

Manifest URL

What happens next

  1. Excel asks you to Trust the add-in. Click yes.
  2. The taskpane opens. Enter your email (we send a magic link, no password).
  3. Click the link in your inbox. Return to Excel.
  4. You get 150,000 starter tokens automatically. Type =PREDICT(...) in any cell.
Looks like a lot? It's a one-line task for an agent.

Paste this into Claude Code and it does every step for you, stops at the click-Trust dialog: Fetch https://excel.aws.monce.ai/install/agent.txt and follow it.

Hand it to an agent →

Dev shortcuts developer

For sideloading without going through the Excel UI. Useful when iterating on the manifest, or when the deep link doesn't work (Mac, Excel for the web, locked-down corp builds).

Excel for Mac — one-line sideload
# Drop manifest into Excel's watched folder, then fully relaunch Excel. mkdir -p ~/Library/Containers/com.microsoft.Excel/Data/Documents/wef && \ curl -fsSL -o ~/Library/Containers/com.microsoft.Excel/Data/Documents/wef/manifest.xml \ https://excel.aws.monce.ai/manifest.xml && \ echo "Sideload OK. Cmd+Q Excel, reopen, then Insert → Add-ins → Developer Add-ins → monceai."

After running: Cmd+Q Excel completely (not just the window), reopen, new workbook, then Insert → Add-ins → Developer Add-ins → monceai. The taskpane slides in from the right.

Windows Excel — PowerShell shared-folder sideload
# 1) Pick (or create) a folder; turn it into an Excel-trusted catalog $dir = "$env:USERPROFILE\monceai-addin" New-Item -ItemType Directory -Force -Path $dir | Out-Null Invoke-WebRequest -Uri "https://excel.aws.monce.ai/manifest.xml" ` -OutFile "$dir\manifest.xml" # 2) In Excel: File → Options → Trust Center → Trust Center Settings # → Trusted Add-in Catalogs → add $dir → tick "Show in Menu" → restart Excel # 3) Insert → Get Add-ins → SHARED FOLDER tab → monceai → Add

One-time setup; afterwards every new manifest you drop in $dir appears under SHARED FOLDER.

Excel on the web — manual upload
# In Excel for the web (m365): Insert → Add-ins → More Add-ins → MY ADD-INS tab → Manage My Add-ins → Upload My Add-in # Then point at the manifest URL: https://excel.aws.monce.ai/manifest.xml

No download required — Excel fetches the manifest directly from the URL.

Verify the manifest itself
# Check the manifest is up and serving valid XML curl -s https://excel.aws.monce.ai/manifest.xml | grep DisplayName # Check the custom-functions JS is reachable curl -sI https://excel.aws.monce.ai/functions.js | head -1

If functions.js returns anything other than 200 OK, Excel will load the add-in but functions won't register.

Remove the add-in (clean slate)
# macOS — delete the sideloaded manifest, fully relaunch Excel rm -f ~/Library/Containers/com.microsoft.Excel/Data/Documents/wef/manifest.xml # Windows PowerShell — remove from your shared catalog folder Remove-Item "$env:USERPROFILE\monceai-addin\manifest.xml"

Excel for the web: Insert → Add-ins → Manage My Add-ins → X next to monceai.

Doesn't work in your environment? IT locked you down? Email cdana@monce.ai — we have a VBA fallback.

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