Integration
Connect Google Calendar and OnceHub
When Attendee Response Changed fires in Google Calendar, your agent runs Create Contact in OnceHub, or Booking Completed in OnceHub to Create Event in Google Calendar. Describe the whole flow and it is built, tested on every scenario and kept running.
What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it.
Build solutions, not workarounds.
What do you want Google Calendar and OnceHub to do together?
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Claude Code
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Claude Code guide (opens in a new tab)Claude, web and desktop
Open Customize, then Connectors, then Add custom connector, and paste the address. On Team and Enterprise an owner adds it first.
Setup guide (opens in a new tab)Cursor
Add the address to your MCP configuration as a server URL. Cursor signs you in in your browser.
Setup guide (opens in a new tab)Zed
Open Settings, then AI, then MCP Servers, then Add Server, then Add Remote Server.
Setup guide (opens in a new tab)Codex and the ChatGPT desktop app
Open Settings, then MCP servers, then Add server, and choose Streamable HTTP. From the terminal, Codex takes the address with its own add command and then signs you in.
Setup guide (opens in a new tab)Any other MCP client
Paste the address where the client asks for a remote MCP server URL, and name the server apiant-ai where it lets you. APIANT's skills reach the client over the same connection.
Setup guide (opens in a new tab)Example flows
What Google Calendar and OnceHub can do together
From Google Calendar to OnceHub
When Attendee Response Changed in Google Calendar
then Create Contact in OnceHub
When Event Created in Google Calendar
then Update Contact in OnceHub
From OnceHub to Google Calendar
When Booking Completed in OnceHub
then Create Event in Google Calendar
When Contact Updated in OnceHub
then Update Event in Google Calendar
Starting points drawn from the triggers and actions in the catalog today. Describe the flow you need, at any depth, and your agent builds it and tests every scenario before it ships.
Everything your agent can do with Google Calendar and OnceHub
Triggers and actions 21 triggers · 62 actions
Trigger
Attendee Response ChangedPolling trigger that fires when any attendee's RSVP changes to accepted, declined, or tentative. Returns attendee info and current status.
Trigger
Calendar Event SyncPolling trigger that returns full event data including details, attendees, and metadata. For real-time notifications with basic info, use Calendar Event Changes (webhook).
Trigger
Event Canceled or DeletedTriggers when a Google Calendar event is cancelled or deleted. Returns minimal data: event_id, summary (if available), and cancellation timestamp.
Trigger
Event CreatedPolling trigger that fires when a new calendar event is created. Returns event ID, summary, start/end times, and organizer info.
Trigger
Event Starting SoonTriggers when a calendar event is within a configured number of minutes from starting. Returns event details, time remaining, attendees, and join links when available.
Trigger
Event UpdatedTriggers when an existing Google Calendar event is modified. Returns the event ID, change type, and the specific fields that changed with their previous and new values.
Action
Acl DeleteDeletes an access control rule from a Google Calendar. Use when you need to remove sharing permissions for a user, group, or domain.
Action
Acl GetRetrieves a specific access control rule for a calendar. Use when you need to check permissions for a specific user, group, or domain.
Action
Acl InsertCreates an access control rule for a calendar. Use when you need to grant sharing permissions to a user, group, or domain.
Action
Acl ListRetrieves the list of access control rules (ACLs) for a specified calendar, providing the necessary 'rule_id' values required for updating specific ACL rules.
Action
Acl PatchUpdates an existing access control rule for a calendar using patch semantics (partial update). This allows modifying specific fields without affecting other properties. IMPORTANT: The ACL rule must already exist on the calendar. This action cannot create new rules. If you receive a 404 Not Found error, the rule does not exist - use ACL insert to create it first, or use ACL list to verify available rules. Each patch request consumes three quota units. For domain-type ACL rules, if PATCH fails with 500 error, this action will automatically fallback to UPDATE method.
Action
Acl UpdateUpdates an access control rule for the specified calendar.
Action
Acl WatchTool to watch for changes to ACL resources. Use when you need to set up real-time notifications for access control list modifications on a calendar.
Action
Batch EventsExecute up to 1000 event mutations (create/patch/delete) in one Google Calendar HTTP batch request with per-item status/results. Use this to materially reduce round-trips for bulk operations like migrations, cleanup, or large-scale updates.
Action
Calendar List DeleteTool to remove a calendar from the user's calendar list. Use when you need to unsubscribe from or hide a calendar from the user's list.
Action
Calendar List GetRetrieves metadata for a SINGLE specific calendar from the user's calendar list by its calendar ID. This action requires a calendarId parameter and returns details about that one calendar only. NOTE: This does NOT list all calendars. To list all calendars in the user's calendar list, use GOOGLECALENDAR_CALENDAR_LIST_LIST instead.
Action
Calendar List InsertInserts an existing calendar into the user's calendar list.
Action
Calendar List PatchUpdates an existing calendar on the user's calendar list using patch semantics. This method allows partial updates, modifying only the specified fields.
Action
Calendar List UpdateUpdates an existing entry on the user\'s calendar list.
Action
Calendar List WatchWatch for changes to CalendarList resources using push notifications. Use this to receive real-time updates when calendar list entries are modified.
Action
Calendars DeleteDeletes a secondary calendar. use calendars.clear for clearing all events on primary calendars.
Action
Calendars UpdateUpdates metadata for a calendar.
Action
Channels StopTool to stop watching resources through a notification channel. Use when you need to discontinue push notifications for a specific channel subscription.
Action
Create CalendarCreates a new secondary Google Calendar with the specified title and optional settings. Use this action when you need to create a new calendar for organizing events separately from the primary calendar. The authenticated user becomes the owner of the newly created calendar. Optional parameters include description, location, and timezone.
Action
Create EventCreates an event on a google calendar, needing rfc3339 utc start/end times (end after start) and write access to the calendar. by default, adds the organizer as an attendee unless exclude organizer is set to true.
Action
Delete EventDeletes a specified event by `event id` from a google calendar (`calendar id`); this action is idempotent and raises a 404 error if the event is not found.
Action
Duplicate CalendarCreates a new, empty google calendar with the specified title (summary).
Action
Events GetRetrieves a SINGLE event by its unique event_id (REQUIRED). This action does NOT list or search events - it fetches ONE specific event when you already know its ID. If you want to list events within a time range, search for events, or filter by criteria like time_min/time_max, use GOOGLECALENDAR_EVENTS_LIST instead.
Action
Events ImportTool to import an event as a private copy to a calendar. Use when you need to add an existing event to a calendar using its iCalUID. Only events with eventType='default' can be imported.
Action
Events InstancesReturns instances of the specified recurring event.
Action
Events ListReturns events on the specified calendar.
Action
Events List All CalendarsReturn a unified event list across all calendars in the user's calendar list for a given time range. Use when you need a single view of all events across multiple calendars. An inverted or incorrect time range silently returns empty results rather than an error. An empty `items` list means no events matched the filters—adjust `time_min`, `time_max`, or `q` before concluding no events exist.
Action
Events MoveMoves an event to another calendar, i.e., changes an event's organizer.
Action
Events WatchWatch for changes to events resources.
Action
Find EventFinds events in a specified google calendar using text query, time ranges (event start/end, last modification), and event types; ensure `timemin` is not chronologically after `timemax` if both are provided.
Action
Find Free SlotsFinds free/busy time slots in google calendars for specified calendars within a defined time range (defaults to the current day utc if `time min`/`time max` are omitted), enhancing busy intervals with event details; `time min` must precede `time max` if both are provided.
Action
Free Busy QueryReturns free/busy information for a set of calendars.
Action
Get CalendarRetrieves a specific google calendar, identified by `calendar id`, to which the authenticated user has access.
Action
Get Current Date TimeGets the current date and time, allowing for a specific timezone offset.
Action
List Acl RulesRetrieves the list of access control rules (acls) for a specified calendar, providing the necessary 'rule id' values required for updating specific acl rules.
Action
List CalendarsRetrieves calendars from the user's google calendar list, with options for pagination and filtering.
Action
Patch CalendarPartially updates (patches) an existing google calendar, modifying only the fields provided; `summary` is mandatory and cannot be an empty string, and an empty string for `description` or `location` clears them.
Action
Patch EventUpdates specified fields of an existing event in a google calendar using patch semantics (array fields like `attendees` are fully replaced if provided); ensure the `calendar id` and `event id` are valid and the user has write access to the calendar.
Action
Quick AddParses natural language text to quickly create a basic google calendar event with its title, date, and time, suitable for simple scheduling; does not support direct attendee addition or recurring events, and `calendar id` must be valid if not 'primary'.
Action
Remove AttendeeRemoves an attendee from a specified event in a google calendar; the calendar and event must exist.
Action
Settings GetTool to return a single user setting for the authenticated user. Use when you need to retrieve a specific calendar setting value.
Action
Settings ListReturns all user settings for the authenticated user.
Action
Settings WatchWatch for changes to settings resources.
Action
Sync EventsSynchronizes google calendar events, performing a full sync if no `sync token` is provided or if a 410 gone error (due to an expired token) necessitates it, otherwise performs an incremental sync for events changed since the `sync token` was issued.
Action
Update Acl RuleUpdates an access control rule for the specified calendar.
Action
Update EventUpdates an existing event by `event id` in a google calendar; this is a full put replacement, so provide all desired fields as unspecified ones may be cleared or reset.
Trigger
Booking CanceledTriggers when a OnceHub booking is canceled by the customer or by someone on your team.
Trigger
Booking Cancelled and RescheduledTriggers when a customer cancels a OnceHub booking and then reschedules it on a different booking page.
Trigger
Booking CompletedTriggers when a OnceHub booking's end time has passed and the meeting is marked completed.
Trigger
Booking Lifecycle EventTriggers on any OnceHub booking event — scheduled, rescheduled, reassigned, canceled, completed or no-show — with the event name included so you can branch on it.
Trigger
Booking No-ShowTriggers when a OnceHub booking is marked as a no-show.
Trigger
Booking RescheduledTriggers when a OnceHub booking is rescheduled to a new time.
Trigger
Booking ScheduledTriggers when a new OnceHub booking is scheduled.
Trigger
Contact CapturedTriggers when a new contact is captured in OnceHub.
Trigger
Contact Lifecycle EventTriggers whenever a OnceHub contact is created or changed, so you catch the whole contact lifecycle in one place.
Trigger
Contact UpdatedTriggers when an existing OnceHub contact is updated.
Trigger
Conversation AbandonedTriggers when a website visitor stops replying to a OnceHub chatbot for more than ten minutes and the conversation is abandoned.
Trigger
Conversation ClosedTriggers when a OnceHub chatbot conversation is closed.
Trigger
Conversation Lifecycle EventTriggers on any OnceHub conversation event — started, closed or abandoned — with the event name included so you can branch on it.
Trigger
Conversation StartedTriggers when a website visitor sends their first message to a OnceHub chatbot and a conversation starts.
Trigger
Reassigned BookingTriggers when a OnceHub booking is reassigned to a different host.
Action
Cancel BookingCancels a OnceHub booking, optionally with a reason and without emailing the customer.
Action
Create ContactCreates a new contact in OnceHub. Give at least an email address or a mobile number.
Action
Create One-Time Booking LinkCreates a one-time booking link for a published OnceHub booking calendar, optionally prefilling the booking form and pinning the host or duration.
Action
Delete ContactDeletes a contact from OnceHub.
Action
Find ContactFinds a OnceHub contact by email address.
Action
Get Available Time SlotsReturns the open meeting times on a OnceHub booking calendar for the window you choose.
Action
Get Booking CalendarReturns one OnceHub booking calendar with its host, public link and meeting length.
Action
Get Booking DetailsReturns one OnceHub booking with its time, customer details and booking form answers.
Action
Get ContactReturns one OnceHub contact with its details and custom fields.
Action
Get Contact's Future MeetingsReturns a contact's upcoming OnceHub meetings — the bookings that start after the time you give.
Action
List Booking CalendarsLists the booking calendars in your OnceHub account.
Action
List BookingsLists OnceHub bookings, with optional filters for status, contact, host, calendar and date range.
Action
List ContactsLists the contacts in your OnceHub account, with optional email and date filters.
Action
Mark Booking as No-ShowMarks a OnceHub booking as a no-show.
Action
Reassign BookingReassigns a OnceHub booking to a different host, optionally naming the video conferencing service to use.
Action
Request RescheduleAsks the customer to pick a new time for a OnceHub booking, optionally telling them why.
Action
Update ContactUpdates an existing OnceHub contact. Only the fields you fill in are changed; anything left blank keeps its current value.
No trigger or action matches that. Ask your agent to add it: it reads the API documentation and builds what you describe.
Each app on its own
Reviews
What our customers say
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Questions
Google Calendar and OnceHub, answered
What can start an automation from Google Calendar?
Any of Google Calendar's 6 triggers in the catalog, including Attendee Response Changed, Event Created, Event Updated and Calendar Event Sync. Describe the moment in plain language and your agent picks the right one.
What can your agent do in OnceHub when something happens in Google Calendar?
Any of OnceHub's 17 actions, including Create Contact, Create One-Time Booking Link, Update Contact and Find Contact. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from OnceHub to Google Calendar?
Yes. When something happens in OnceHub, your agent can act in Google Calendar too. This page covers both directions: OnceHub's triggers and Google Calendar's actions are listed here as well.
Do I have to build a connector for Google Calendar or OnceHub?
No. Both are in the catalog with their triggers and actions. You describe the automation; your agent builds it, tests every scenario and keeps it running.
Can my AI client use Google Calendar and OnceHub without building an automation?
Yes. With your AI client connected to APIANT, ask it to do something in either app once and it runs that action on the spot. Ask for an automation and your agent builds it, tests every scenario and keeps it running. One connection covers both.
What happens when something fails?
Your agent works that out for you. It plans the failure paths along with the happy path, then tests every scenario before it ships.
Is there a free plan?
Yes. Every plan includes the agent, including free, and building from your own AI client spends no assistant credits.