--- title: "Connect Microsoft 365 to Hypamoon" description: "Microsoft 365 has an open API. See what you can build with it in Hypamoon, how it signs in, and the sources we checked." url: https://hypamoon.com/connect-to/microsoft-365 --- 1. [Connect to](https://hypamoon.com/connect-to) 2. Microsoft 365 Work and projects # Connect Microsoft 365 to Hypamoon Yes, with one catch. Microsoft 365 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. Open ## The check Three questions about the API of Microsoft 365, answered from its own docs. **Public API docs**\ **Yes.** Microsoft Graph is publicly documented on Microsoft Learn. [Read the docs](https://learn.microsoft.com/en-us/graph/auth-v2-service) **A key you create yourself**\ **Yes.** Register an app in Microsoft Entra ID yourself. Application permissions need admin consent from your own tenant admin. [learn.microsoft.com](https://learn.microsoft.com/en-us/entra/identity-platform/quickstart-register-app) **Versions or a changelog**\ **Yes.** Stable v1.0 endpoint next to beta, with a What's new page and changelog. [learn.microsoft.com](https://learn.microsoft.com/en-us/graph/whats-new-overview) **How it signs in**\ OAuth 2.0 through an app you register in Microsoft Entra ID. With the client credentials flow the app uses a client secret or certificate, without a signed-in user. **Webhooks**\ **Yes.** It can tell your app when something changes. [learn.microsoft.com](https://learn.microsoft.com/en-us/graph/change-notifications-delivery-webhooks) **Hosting**\ Cloud ## What you can build Search mail, calendars and files, and draft emails or add calendar events 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](https://hypamoon.com/docs/adapters) ### Good to know - Microsoft 365 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 365 takes more work: ask your chat to check this first. - Client secrets last at most 24 months, so plan to rotate them. Change notification subscriptions expire and must be renewed. ## Try it in your chat Fill in what to read and write, and send it. Say this in your chat > Build the Hypamoon recipe build-an-adapter for Microsoft 365. API docs: https://learn.microsoft.com/en-us/graph/auth-v2-service. Read: \[what\]. Write: \[what, or nothing\]. [Open in Claude](https://claude.ai/new?q=Build%20the%20Hypamoon%20recipe%20build-an-adapter%20for%20Microsoft%20365.%20API%20docs%3A%20https%3A%2F%2Flearn.microsoft.com%2Fen-us%2Fgraph%2Fauth-v2-service.%20Read%3A%20%5Bwhat%5D.%20Write%3A%20%5Bwhat%2C%20or%20nothing%5D.) 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](https://hypamoon.com/r/build-an-adapter) ## Sources Checked on 1 November 2026. - [learn.microsoft.com/en-us/graph/auth-v2-service](https://learn.microsoft.com/en-us/graph/auth-v2-service) - [learn.microsoft.com/en-us/entra/identity-platform/quickstart-register-app](https://learn.microsoft.com/en-us/entra/identity-platform/quickstart-register-app) - [learn.microsoft.com/en-us/graph/whats-new-overview](https://learn.microsoft.com/en-us/graph/whats-new-overview) - [learn.microsoft.com/en-us/graph/change-notifications-delivery-webhooks](https://learn.microsoft.com/en-us/graph/change-notifications-delivery-webhooks) Microsoft 365 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 365. Found something that changed? Tell us at [support](https://hypamoon.com/support#contact). ## More in work and projects - [**Airtable** Open](https://hypamoon.com/connect-to/airtable) - [**Asana** Open](https://hypamoon.com/connect-to/asana) - [**Basecamp** Open](https://hypamoon.com/connect-to/basecamp) - [**ClickUp** Open](https://hypamoon.com/connect-to/clickup) - [**Confluence** Open](https://hypamoon.com/connect-to/confluence) - [**Google Workspace** Open](https://hypamoon.com/connect-to/google-workspace) - [**Harvest** Open](https://hypamoon.com/connect-to/harvest) - [**Jira** Open](https://hypamoon.com/connect-to/jira) - [**Miro** Open](https://hypamoon.com/connect-to/miro) - [**monday.com** Open](https://hypamoon.com/connect-to/monday-com) - [**Notion** Open](https://hypamoon.com/connect-to/notion) - [**Slack** Open](https://hypamoon.com/connect-to/slack) - [**Smartsheet** Open](https://hypamoon.com/connect-to/smartsheet) - [**Teamwork.com** Open](https://hypamoon.com/connect-to/teamwork-com) - [**Toggl Track** Open](https://hypamoon.com/connect-to/toggl-track) - [**Trello** Open](https://hypamoon.com/connect-to/trello) - [**Wrike** Open](https://hypamoon.com/connect-to/wrike) - [**Zoom** Open](https://hypamoon.com/connect-to/zoom) [All 267 tools](https://hypamoon.com/connect-to) ## 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. Say this in your chat > 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. [Open in Claude](https://claude.ai/new?q=Check%20if%20%5Bsoftware%5D%20has%20an%20open%20API%20that%20a%20Hypamoon%20adapter%20can%20use%3A%20public%20API%20docs%2C%20a%20key%20or%20token%20I%20can%20create%20myself%20without%20asking%20the%20vendor%2C%20and%20versions%20or%20a%20changelog.%20Link%20the%20pages%20you%20used.) [Open in ChatGPT](https://chatgpt.com/?q=Check%20if%20%5Bsoftware%5D%20has%20an%20open%20API%20that%20a%20Hypamoon%20adapter%20can%20use%3A%20public%20API%20docs%2C%20a%20key%20or%20token%20I%20can%20create%20myself%20without%20asking%20the%20vendor%2C%20and%20versions%20or%20a%20changelog.%20Link%20the%20pages%20you%20used.) Fill in the name of your software. Checking needs no connection to Hypamoon. ## Ready to connect Microsoft 365? Connect your chat once, then ask it to build the adapter. [Start free](https://app.hypamoon.com/?mode=signup&utm_source=connect-to&utm_campaign=microsoft-365) Works in Claude and ChatGPT. [Add to Claude](https://hypamoon.com/connect?via=connect-to~microsoft-365#claude) [Add to ChatGPT](https://hypamoon.com/connect?via=connect-to~microsoft-365#chatgpt)