ICS calendar MCP server
To give an AI agent a calendar link, paste the ICS or webcal address into Prubex under Add a calendar link. Your agent can read those events, merged with your other calendars, but cannot change them.
Connect ICS calendar in 4 steps
- Copy the calendar’s ICS or webcal link (a shared, secret or public address).
- In Prubex, choose Connect an account, then Add a calendar link, and paste it.
- Add Prubex to your agent: in Claude or ChatGPT as a connector (you approve it in Prubex), or with an API key for Cursor, VS Code and other clients.
- Ask your agent what’s coming up; the link’s events appear with your other calendars.
What your agent can do with ICS calendar
| Capability | Supported |
|---|---|
| Read calendars | Yes |
| Create and change events | No |
| Answer invitations | No |
| Propose a new time | No |
| Free/busy | Yes, by Prubex |
| Attendees’ free/busy | No |
| Online-meeting links | No |
Calendar links carry no mail: connect the mailbox itself for mail.
Good to know
Checked .
- Read-only: events from a calendar link cannot be changed through Prubex.
- Secret links are kept encrypted; Prubex never shows them back.
- What your agent sees is at most 15 minutes old.
- Feeds larger than 5 MB are refused, to keep calls fast.
ICS calendar questions
What calendars give ICS links?
Most do: Google Calendar’s secret address, Outlook’s published calendars, school and sports fixtures, booking systems and public holiday feeds.
Does a calendar link count as an account?
Yes, each link you connect counts as one account, like a mailbox.
Can my agent add events to it?
No. ICS links are read-only. Connect the calendar itself (Microsoft, Google, iCloud, CalDAV) for two-way access.