Connect-MCP

AddEvent MCP by usefulapi

io.usefulapi/addevent · v1.0.0

Read AddEvent calendars, events, RSVPs and subscribers; create and update calendars and events.

MCPremoteno credentialsCalendarEmail

Reported outcomes

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Last check

Reachable, 18 tools, protocol 2025-06-18 · checked 2026-10-17

Test & rating

B 82/100

What it does: 18 tools · 12 read, 6 write (incl. delete/pay) · Calendar, Email

Test call addevent_list_calendars: needs a key: HTTP 401 (1,026 ms)

How the rating is made
  • Answers without login: +30
  • Speed of first answer: +6
  • Lists tools: +10
  • Tool descriptions: +15
  • Parameter descriptions: +8
  • Read/write annotations: +5
  • Safe test call: +8
  • More than 80 tools: 0

Tested 2026-10-17. Fixed rules, no AI model. Grade A needs a successful real call.

Install

Remote URL
https://addevent.usefulapi.io/mcp

Tools

18 tools listed at last check
  • addevent_list_calendars List the account's calendars (newest first by default) with id, title, timezone, whether it is the default calendar, landing-page links and counts of events and subscribers. GET /calendars.
  • addevent_get_calendar One calendar by id: title, timezone, week start, template ids, subscriber and event counts, links, custom data. GET /calendars/{id}.
  • addevent_create_calendar WRITE: creates a new calendar in the AddEvent account (a new, empty calendar; nothing existing is changed and nobody is notified). Needs a title. POST /calendars.
  • addevent_update_calendar WRITE: changes fields of an existing calendar (only the fields you pass; the rest stay). Title, description and timezone changes show on its landing page and can reach people who subscribe to the calendar feed. Not reversible by this server (no previous values are kept), so read the calendar first.
  • addevent_list_events Search the account's events (newest created first; by start time when a date filter is used): title, start/end, timezone, location, RSVP settings and stats, landing-page links. Filter by calendar, event ids, text, date window or a custom_data pair. GET /events.
  • addevent_get_event One event by id (evt-...): all fields incl. description, organizer, reminder, recurring rule, RSVP settings and stats, custom data and share links. GET /events/{id}.
  • addevent_create_event WRITE: creates a new event on a calendar (the account's default calendar if calendar_id is omitted). Creates a public event landing page and share links; it does not e-mail anyone, though people subscribed to that calendar's feed will see the event on their next sync. Needs title and datetime_start.
  • addevent_update_event WRITE: changes fields of an existing event (only the fields you pass; the rest stay). The change goes live on its landing page and share links, and people who subscribed to the calendar or added the event with a live link are updated on their next calendar sync, so a time or location change can noti
  • addevent_list_rsvp_attendees List RSVP attendees (personal data: e-mail addresses and the answers they gave on the RSVP form). Filter by calendar, event or response (going/maybe/not-going). Paged, 20 at most per page: read only what the task needs. IP address and coordinates are removed from the reply. GET /rsvps.
  • addevent_get_rsvp_attendee One RSVP attendee by id (personal data: e-mail and form answers; IP address and coordinates removed). GET /rsvps/{id}.
  • addevent_create_rsvp_attendee WRITE: adds ONE RSVP attendee (one e-mail address, personal data) to an event. This server never asks AddEvent to send the confirmation or organizer notification e-mails, but the event's own reminder and follow-up e-mails (if the event has them) will later go to this address, so only add someone who
  • addevent_update_rsvp_attendee WRITE: changes ONE RSVP attendee (email, response or form answers; only the fields you pass). The event's reminder and update e-mails go to the e-mail address stored here, so changing it redirects those e-mails to that person. This server never triggers the confirmation or organizer notification e-m
  • addevent_list_calendar_subscribers List people subscribed to the account's calendars (personal data: the form answers they gave, such as name and e-mail; calendar app type, sync status). Paged, 20 at most per page. IP address and coordinates are removed. GET /subscribers.
  • addevent_get_calendar_subscriber One calendar subscriber by id (personal data; IP address and coordinates removed). GET /subscribers/{id}.
  • addevent_list_rsvp_forms The account's RSVP forms (id, name), newest first. Use the id as rsvp_form_id on an event. GET /events/rsvp-forms.
  • addevent_list_event_templates The account's event landing page templates (id, name), newest first. Use the id as landing_page_template_id on an event. GET /events/templates.
  • addevent_list_calendar_templates The account's calendar landing page templates or embeddable calendar templates (id, name), newest first. Use the id as landing_page_template_id / embeddable_calendar_template_id on a calendar. GET /calendars/templates.
  • addevent_list_timezones Timezone names AddEvent supports (use them as the timezone of events and calendars), with current UTC offset. Optional text filter on the name. GET /timezones.

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