M365 Calendar (Microsoft Graph)

Keep this skill lean: do the heavy lifting with the bundled scripts.

Installation / runtime requirements

• Requires Node.js (the scripts are Node ESM).
• This skill declares its npm dependency in package.json.
• After installing/updating the skill, install deps in the skill folder:

cd skills/m365-calendar
npm install

Security / boundaries

• Never commit or share token caches or client secrets.
• Default secret location (per machine): ~/.openclaw/secrets/m365-calendar/

Quick start

0) First question: do you want to connect M365 Business or M365 Home/Consumer?

• M365 Home/Consumer = hotmail.com, outlook.com, live.com
• M365 Business = Work/School account (Exchange Online)

1) Privacy / keys (important)

• No third-party API key required.
• Auth is done via your own Microsoft login (device code flow).
• Tokens are stored locally per profile on the machine running OpenClaw.
• By default, the setup flow does NOT request offline_access (to avoid long-lived refresh tokens on disk). Use --offline only if you explicitly want background refresh.

2) You need an App (client) ID

You must pass --clientId.

• Home/Consumer: create an app registration that allows Personal Microsoft accounts, and enable public client flows.
• Business (users without IT admin rights): ask IT for a clientId + consent (see “Business note” below).

3) One-command setup (recommended)

# Consumer / home accounts (hotmail.com / outlook.com)
node skills/m365-calendar/scripts/setup.mjs \
  --profile home \
  --tenant consumers \
  --email you@outlook.com \
  --clientId <YOUR_APP_CLIENT_ID> \
  --tz Europe/Vienna

# Business / work accounts
node skills/m365-calendar/scripts/setup.mjs \
  --profile business \
  --tenant organizations \
  --email you@company.com \
  --clientId <IT_PROVIDED_CLIENT_ID> \
  --tz Europe/Vienna

2) Use

node skills/m365-calendar/scripts/list.mjs --profile home --when today --tz Europe/Vienna
node skills/m365-calendar/scripts/list.mjs --profile home --when tomorrow --tz Europe/Vienna
node skills/m365-calendar/scripts/search.mjs --profile home --when tomorrow --tz Europe/Vienna --query "Mittagessen"

2) List remaining events today (Europe/Vienna):

node skills/m365-calendar/scripts/list.mjs --profile tom-business --when today --tz Europe/Vienna

3) Search and show attendee responses:

node skills/m365-calendar/scripts/search.mjs --profile tom-business --query "Mittagessen" --when tomorrow --tz Europe/Vienna
node skills/m365-calendar/scripts/get-event.mjs --profile tom-business --id <EVENT_ID> --tz Europe/Vienna

4) Move an event to a new time:

node skills/m365-calendar/scripts/move-event.mjs --profile tom-business --id <EVENT_ID> \
  --start "2026-02-19T12:30" --end "2026-02-19T13:00" --tz Europe/Vienna

Operational workflow (recommended)

When the user asks to change a meeting:

1) Identify the event deterministically (search by day-range + subject; confirm ID).

2) Read the event and report attendee response statuses.

3) Patch start/end.

4) Re-read the event and confirm the final start/end + any response resets.

Notes on Business vs Home (Consumer)

• Use --tenant organizations for work/school accounts (most “business” tenants).
• Use --tenant consumers for hotmail/outlook.com personal accounts.
• Use --tenant common only if you explicitly want one profile that can log into either type.

Consumer (hotmail/outlook.com) requirements

Your app registration must:

• Allow personal Microsoft accounts
• Enable public client flows (otherwise device-code can fail with errors like AADSTS70002)

Business note (users without IT admin rights)

Many tenants block:

• creating app registrations as a normal user
• user consent to new apps

In that case the skill can still work for Business accounts, but only if your IT/SysAdmin provides a clientId for an app registration configured with:

• Account type: organizational accounts (or org+personal)
• Delegated Microsoft Graph permissions: Calendars.Read, Calendars.ReadWrite, offline_access
• Public client flows enabled (Device Code)
• (Often required) Admin consent granted for the above permissions

If you don’t get such a clientId/consent from IT, you can still use the skill with a Consumer account (hotmail/outlook.com), but your Business calendar will remain blocked.

If silent token acquisition fails, re-run setup.mjs for that profile.