Share Outlook Calendar via API

Question

I need to share the main microsoft outlook calendar of my user with another Outlook user programatically, via an API.

I managed to integrate Oauth2 authorization with the correct scopes (wl.calendars_update) to access calendar.

Based on the Outlook Calendar REST API reference I could successfully retrieve the user's calendars from https://outlook.office.com/api/v2.0/me/calendars. But what we want is to share a calendar via an API. Is this possible?

For comparison google does this via ACLs. And the code required for sharing is smth like this below:

const headers = { Authorization: `Bearer ${req.pre.user.microsoftAccessToken}` };
    const params = { scope: { type: 'user', value: google.calendar.mail }, role: 'freeBusyReader' };

    return rp.post(`${google.calendar.apiUrl}/primary/acl`, { json: true, body: params, headers })
      .then(() => res({ message: req.i18n.__('shareCalendarSuccess') }))
      .catch(err => res(normalizeErr(err)));

tanguy_k tanguy_k · Accepted Answer · 2017-01-09T18:37:20

I think it is impossible for now.

It seems Outlook.com REST API is very recent:

Microsoft introduces new unified Outlook APIs for Outlook.com & Office 365 => Aug 12, 2015
Provide REST API support for outlook.com => Microsoft answer: July 22, 2016

I need this feature too and I've written a feature request on Microsoft UserVoice: Allow to modify calendars share/ACL/permissions using Outlook.com REST API

Share Outlook Calendar via API

1 Answers