Work and projects
Connect Microsoft Excel to Hypamoon
Yes, with one catch. Microsoft Excel has an open API that you can use yourself, but it signs in with OAuth only, and that takes more work in a Hypamoon adapter today.
OpenThe check
Three questions about the API of Microsoft Excel, answered from its own docs.
- Public API docs
- Yes. Excel workbooks in OneDrive and SharePoint through Microsoft Graph. Read the docs
- A key you create yourself
- Yes. Register an app in Microsoft Entra ID yourself; application permissions need consent from your own tenant admin. learn.microsoft.com
- Versions or a changelog
- Yes. Stable Graph v1.0 endpoint next to beta, with a What's new page. learn.microsoft.com
- How it signs in
- OAuth 2.0 through an app registered in Microsoft Entra ID, with delegated permissions or client credentials.
- Webhooks
- Yes. It can tell your app when something changes. learn.microsoft.com
- Hosting
- Cloud
What you can build
Add a row to a table in an Excel file for every new order, and ask questions about the numbers in a workbook from your chat.
Your chat writes it as a Hypamoon adapter from the docs above. Reading starts after you click Allow in the portal, and every write waits for your approval, one call at a time. How adapters work
Good to know
- Microsoft Excel signs in with OAuth or signed requests only, with tokens that expire. The Hypamoon vault holds a fixed key today, so an adapter for Microsoft Excel takes more work: ask your chat to check this first.
- Part of Microsoft 365, which has its own entry; this entry is for people looking for this app on its own. Only .xlsx workbooks are supported, not .xls. Change notifications work on the file, through its drive.
Try it in your chat
Fill in what to read and write, and send it.
Build the Hypamoon recipe build-an-adapter for Microsoft Excel. API docs: https://learn.microsoft.com/en-us/graph/excel-concept-overview. Read: [what]. Write: [what, or nothing].
In Claude, or another chat with the full Hypamoon connection; adapters are not in ChatGPT yet. You paste the key in the portal, never in the chat. The full recipe
Sources
Checked on 7 November 2026.
- learn.microsoft.com/en-us/graph/excel-concept-overview
- learn.microsoft.com/en-us/entra/identity-platform/quickstart-register-app
- learn.microsoft.com/en-us/graph/whats-new-overview
- learn.microsoft.com/en-us/graph/change-notifications-delivery-webhooks
Microsoft Excel is a name of its owner, used here only to describe the software. This page is not an official integration and Hypamoon has no partnership with Microsoft Excel. Found something that changed? Tell us at support.
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Tool not listed? Ask the chat to check its API.
The same three checks work for any software. Your chat reads the vendor's own docs and tells you what it found.
Check if [software] has an open API that a Hypamoon adapter can use: public API docs, a key or token I can create myself without asking the vendor, and versions or a changelog. Link the pages you used.
Fill in the name of your software. Checking needs no connection to Hypamoon.
Ready to connect Microsoft Excel?
Connect your chat once, then ask it to build the adapter.
Works in Claude, ChatGPT and Copilot. Add to Claude Add to ChatGPT 
Add to Copilot