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Documentation Index

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Outlook Calendar is available on the Cloud plan only.

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Overview

OneCLI connects AI agents to Outlook Calendar through Microsoft’s OAuth flow. Agents can list events, create meetings, check availability, and manage RSVPs. The gateway injects OAuth credentials into requests to the Microsoft Graph API automatically. This is useful for scheduling agents in Microsoft 365 environments that need to coordinate meetings, check availability, or manage calendars.

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Setup

1

Go to Connections

Open the OneCLI dashboard and navigate to Connections > Outlook Calendar.
2

Authorize

Click Connect Outlook Calendar. You’ll be redirected to Microsoft to sign in and authorize OneCLI. Review the permissions and click Accept.

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What agents can do

  • List events on your calendar within a date range
  • Get details for a specific event (attendees, location, Teams link, body)
  • Create new events with attendees, location, and online meeting settings
  • Update existing events (reschedule, modify attendees, change details)
  • Delete or cancel events
  • Check free/busy availability for one or more users
  • Respond to event invitations (accept, decline, tentative)
  • List all calendars on the account
  • Create and manage calendar groups
  • Find meeting times that work for all attendees

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Controlling access with rules

Use OneCLI’s rules engine to limit what agents can do with your calendar. For example, you can allow read-only access so agents can check availability but not create events, or rate limit event creation. Rules are evaluated before credential injection, so a blocked request never reaches Microsoft Graph.