--- title: "Connect Google Calendar and ActiveCampaign - APIANT.ai" description: "When \"Attendee Response Changed\" fires in Google Calendar, your agent runs \"Add note to contact\" in ActiveCampaign." canonical: "https://apiant.ai/connect/google-calendar-to-activecampaign" --- # Connect Google Calendar and ActiveCampaign When **Attendee Response Changed** fires in [Google Calendar](https://apiant.ai/connections/google-calendar), your agent runs **Add note to contact** in [ActiveCampaign](https://apiant.ai/connections/activecampaign), or **Link clicked in email** in ActiveCampaign to **Create Event** in Google Calendar. Describe the whole flow and it is built, tested on every scenario and kept running. Google Calendar **6** triggers Google Calendar **45** actions ActiveCampaign **19** triggers ActiveCampaign **84** actions What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it. ## What do you want Google Calendar and ActiveCampaign to do together? Give your AI client this address. `https://mcp.apiant.ai` One connection does both: ask your client to act in an app once, or have it build an automation that keeps running. Any client that takes a remote MCP server. Nothing to install. Create your free account, then sign in once in your browser. ### Set it up in your client ### Claude Code Run this in the directory you want to work in. `claude mcp add --transport http -s project apiant-ai https://mcp.apiant.ai` Start Claude Code there, approve the server, and sign in in the browser page it opens. [Claude Code guide (opens in a new tab)](https://apiant.ai/docs/mcp/claude-code) ### 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)](https://apiant.ai/docs/mcp) ### 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)](https://apiant.ai/docs/mcp) ### Zed Open Settings, then AI, then MCP Servers, then Add Server, then Add Remote Server. [Setup guide (opens in a new tab)](https://apiant.ai/docs/mcp) ### 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)](https://apiant.ai/docs/mcp) ### 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)](https://apiant.ai/docs/mcp) Connecting ActiveCampaign and Google Calendar lets booked meetings and contact activity stay on the same page. A tag or deal task in ActiveCampaign can put a call on the right Google Calendar, and an RSVP change or cancelled event can write a note or tag back onto the contact record so the CRM reflects what actually happened. Example flows ## What Google Calendar and ActiveCampaign can do together ### From Google Calendar to ActiveCampaign - When **Attendee Response Changed** in Google Calendar then **Add note to contact** in ActiveCampaign - When **Event Canceled or Deleted** in Google Calendar then **Add tag to contact** in ActiveCampaign ### From ActiveCampaign to Google Calendar - When **Link clicked in email** in ActiveCampaign then **Create Event** in Google Calendar - When **New deal task** in ActiveCampaign 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 ActiveCampaign ## Triggers and actions 25 triggers · 129 actions - Trigger **Attendee Response Changed** Polling trigger that fires when any attendee's RSVP changes to accepted, declined, or tentative. Returns attendee info and current status. - Trigger **Calendar Event Sync** Polling 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 Deleted** Triggers when a Google Calendar event is cancelled or deleted. Returns minimal data: event_id, summary (if available), and cancellation timestamp. - Trigger **Event Created** Polling trigger that fires when a new calendar event is created. Returns event ID, summary, start/end times, and organizer info. - Trigger **Event Starting Soon** Triggers 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 Updated** Triggers 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 Delete** Deletes an access control rule from a Google Calendar. Use when you need to remove sharing permissions for a user, group, or domain. - Action **Acl Get** Retrieves a specific access control rule for a calendar. Use when you need to check permissions for a specific user, group, or domain. - Action **Acl Insert** Creates an access control rule for a calendar. Use when you need to grant sharing permissions to a user, group, or domain. - Action **Acl List** Retrieves 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 Patch** Updates 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 Update** Updates an access control rule for the specified calendar. - Action **Acl Watch** Tool 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 Events** Execute 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 Delete** Tool 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 Get** Retrieves 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 Insert** Inserts an existing calendar into the user's calendar list. - Action **Calendar List Patch** Updates 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 Update** Updates an existing entry on the user\'s calendar list. - Action **Calendar List Watch** Watch for changes to CalendarList resources using push notifications. Use this to receive real-time updates when calendar list entries are modified. - Action **Calendars Delete** Deletes a secondary calendar. use calendars.clear for clearing all events on primary calendars. - Action **Calendars Update** Updates metadata for a calendar. - Action **Channels Stop** Tool to stop watching resources through a notification channel. Use when you need to discontinue push notifications for a specific channel subscription. - Action **Create Calendar** Creates 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 Event** Creates 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 Event** Deletes 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 Calendar** Creates a new, empty google calendar with the specified title (summary). - Action **Events Get** Retrieves 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 Import** Tool 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 Instances** Returns instances of the specified recurring event. - Action **Events List** Returns events on the specified calendar. - Action **Events List All Calendars** Return 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 Move** Moves an event to another calendar, i.e., changes an event's organizer. - Action **Events Watch** Watch for changes to events resources. - Action **Find Event** Finds 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 Slots** Finds 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 Query** Returns free/busy information for a set of calendars. - Action **Get Calendar** Retrieves a specific google calendar, identified by `calendar id`, to which the authenticated user has access. - Action **Get Current Date Time** Gets the current date and time, allowing for a specific timezone offset. - Action **List Acl Rules** Retrieves 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 Calendars** Retrieves calendars from the user's google calendar list, with options for pagination and filtering. - Action **Patch Calendar** Partially 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 Event** Updates 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 Add** Parses 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 Attendee** Removes an attendee from a specified event in a google calendar; the calendar and event must exist. - Action **Settings Get** Tool to return a single user setting for the authenticated user. Use when you need to retrieve a specific calendar setting value. - Action **Settings List** Returns all user settings for the authenticated user. - Action **Settings Watch** Watch for changes to settings resources. - Action **Sync Events** Synchronizes 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 Rule** Updates an access control rule for the specified calendar. - Action **Update Event** Updates 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 **Contact unsubscribed from list** Fires instantly when a contact unsubscribes from a list. Self-registers an ActiveCampaign webhook for the 'unsubscribe' event. - Trigger **Deal task completed** Fires instantly when a deal task is completed. - Trigger **Email opened** Fires instantly when a contact opens an email. Self-registering ActiveCampaign webhook on the 'open' event. - Trigger **Link clicked in email** Fires instantly when a contact clicks a link in an email. Self-registers an ActiveCampaign webhook for the click event. - Trigger **New contact** Polling trigger. Fires when a new contact is created, newest first. - Trigger **New contact added to list** Triggers when a new contact is added to a list. - Trigger **New deal** Polling trigger. Fires when a new deal is created, newest first. - Trigger **New deal task** Fires instantly when a new deal task is created. - Trigger **New list** Polling trigger. Fires when a new list is created, newest first. - Trigger **New note** Triggered when a new note is created. - Trigger **New or updated contact** Polling trigger. Fires when a contact is created or updated, by most-recent update. - Trigger **New or updated deal** Triggers on a new or updated deal. - Trigger **New or updated deal (instant)** Triggers when a new deal is created or an existing deal is updated. - Trigger **New tag** Polling trigger. Fires when a new tag is created, newest first. - Trigger **New task** Triggered when a new task is created. - Trigger **Tag added to contact** Triggers when a tag is added to a contact. - Trigger **Tag removed from contact** Fires instantly when a tag is removed from a contact. - Trigger **Two-way sync new or updated contacts** A trigger for two-way syncing new and updated contacts, with enhanced on-the-fly mapping. Can only be used with enhanced two-way sync actions that support on-the-fly mapping. - Trigger **Two-way sync new or updated deals** A trigger for two-way syncing new and updated deals, with enhanced on-the-fly mapping. Can only be used with enhanced two-way sync actions that support on-the-fly mapping. - Action **Add account** Adds a new account (organization). - Action **Add contact** Adds a new contact. - Action **Add contact to automation** Adds a contact to an automation by contact ID and automation ID. - Action **Add contact to list** Subscribes a contact to a list (status 1) or unsubscribes (status 2) via contactLists. - Action **Add contact via mapped list** Adds (upserts) a contact with mapped fields and the target list id. Ports the dev v1 subscriber_add op to the AC v3 contact/sync endpoint. - Action **Add custom contact object record** Adds a record for the specified contact custom object to the specified contact. - Action **Add deal** Adds a new deal. - Action **Add deal via mappings** Adds a new deal, accepting pipeline and stage by name (mapped) plus standard deal fields. - Action **Add list** Creates a new list. - Action **Add note to contact** Adds a note to a contact. - Action **Add or update contact by email** Adds a new contact, or updates the existing contact if the email already exists (sync endpoint). - Action **Add tag** Creates a new tag. - Action **Add tag to contact** Adds an existing tag to a contact by tag ID and contact ID. - Action **Add task** Adds a new task in ActiveCampaign - Action **Bulk import contacts** Import many contacts in one call with tags/list membership. - Action **Clear contact custom field value** Clears (empties) the value of the specified custom field for the specified contact. - Action **Create abandoned cart** Creates an abandoned cart record via the Deep Data e-commerce integration (ecomOrders with abandonedDate). - Action **Create account association** Creates an account association with a contact ID. - Action **Create a deal note** Add a note to a deal. - Action **Create a deal stage** Creates a new deal stage in the specified pipeline. - Action **Create a deal stage by mapped pipeline** Creates a new deal stage in the mapped pipeline. - Action **Create an ecommerce customer** Create a Deep Data ecommerce customer linking a contact to a store. - Action **Create an ecommerce order** Create a Deep Data ecommerce order record. - Action **Create a note** Create a free-text note attached to a CRM object. - Action **Create an SMS broadcast** Create a new SMS broadcast message to a recipient list. - Action **Create a pipeline** Creates a new pipeline (deal group) in ActiveCampaign. - Action **Create a secondary contact** Associate an additional contact with a deal. - Action **Create or update custom-object record** Upsert a custom-object (schema) record. - Action **Delete contact** Deletes a contact by ID. - Action **Delete custom contact object record** Deletes a record from the specified custom contact object. - Action **Delete deal** Deletes an existing deal. - Action **Delete deal stage** Deletes an existing deal stage. - Action **Delete list** Deletes a list by ID. - Action **Delete note** Delete a note by ID. - Action **Delete tag** Deletes a tag by ID. - Action **Delete task** Deletes a task by ID in ActiveCampaign - Action **Duplicate campaign** Duplicates an ActiveCampaign campaign by ID - Action **Edit campaign** Edits an existing campaign in ActiveCampaign - Action **Find account by name** Finds an existing account by name. Returns matching accounts. - Action **Find contact by custom field** Finds an existing contact by the value of a custom field. Provide the custom field's numeric ID and the value to search for. - Action **Find contacts by custom field** Finds contacts by the selected custom field. May return zero, one, or multiple contact IDs. Use the "Get contact" action to fetch a contact's details. - Action **Find deal by title** Finds an existing deal by title. An error occurs if a single exact match is not found. - Action **Find user by email** Finds an existing user by email. An error occurs if a matching user is not found. - Action **Get account** Returns account info for the specified account ID. - Action **Get all deal stages from specified pipeline** Get all deal stages belonging to a pipeline, looked up by pipeline name. Returns each stage's title (Stage name) and id (Stage ID). - Action **Get automation** Fetches an automation by ID. An error occurs if the automation is not found. - Action **Get campaign** Retrieves a single campaign from ActiveCampaign by its ID. - Action **Get contact** Get contact by ID. An error occurs if the contact is not found. - Action **Get contact by email** Returns full contact details for the specified email address. An error occurs if the contact is not found. - Action **Get contact's deals** Returns all deals associated with the specified contact. - Action **Get contact's lists** Returns all lists the specified contact belongs to. - Action **Get contact's tags** Returns all tags associated with the specified contact. - Action **Get deal** Returns deal info for the specified deal ID. - Action **Get form** Retrieve a single ActiveCampaign form by its ID. - Action **Get list** Returns a single contact list by its id, including its name, sender information and subscriber counts. - Action **Get note** Retrieve a single note by its ID. - Action **Get score** Retrieve a single lead/contact scoring rule by its ID. - Action **Get segment** Retrieve a single ActiveCampaign segment by ID. - Action **Get tag** Fetches a tag by ID. An error occurs if the tag is not found. - Action **Get task** Retrieves a task by ID from ActiveCampaign - Action **List all campaigns** List email campaigns. - Action **List all pipelines** List deal pipelines. - Action **List all scores** List the account's lead/contact scoring rules. - Action **List all stages** List deal pipeline stages. - Action **List all tasks** List CRM tasks. - Action **List automations** Returns a paginated list of all automations. - Action **List contacts** Returns a paginated list of all contacts. - Action **List custom contact object records** Returns a paginated list of all records for the specified custom contact object. - Action **List deals** Returns a paginated list of all deals. - Action **List lists** Returns a paginated list of all contact lists. - Action **List tags** Returns a paginated list of all tags. - Action **Move deal to another stage** Move a deal to a different pipeline stage. - Action **Remove contact from automation** Removes a contact from an automation by deleting the contact automation record. - Action **Remove contact from list** Removes a contact from the specified list. - Action **Remove tag from contact** Removes a tag from a contact by the contactTag association ID. - Action **Remove tags from contact** Removes the provided tags (by name, comma-separated) from a contact identified by email or contact ID. - Action **Set automation status** Enables or disables an automation. Set status to '1' to enable or '0' to disable. - Action **Set custom field value for contact** Create or update a contact's custom field value. - Action **Set deal currency custom field value** Set the value for a deal's custom field of the "currency" type - Action **Update account** Updates the specified account. - Action **Update contact** Updates an existing contact having the specified ID. - Action **Update deal** Updates an existing deal. - Action **Update tag** Updates an existing tag. - Action **Update task** Updates a task by ID in ActiveCampaign ## Each app on its own - [ **Google Calendar** Google Calendar is a time management tool providing scheduling features, event reminders, and integration...](https://apiant.ai/connections/google-calendar) - [ **ActiveCampaign** ActiveCampaign is a marketing automation, email marketing, and CRM platform.](https://apiant.ai/connections/activecampaign) Reviews ## What our customers say ## More from Google Calendar - [ **Google Calendar to HubSpot** HubSpot is your all-in-one stop for all of your marketing software needs.](https://apiant.ai/connect/google-calendar-to-hubspot) - [ **Google Calendar to Salesforce** Salesforce is a leading enterprise customer relationship management (CRM) platform.](https://apiant.ai/connect/google-calendar-to-salesforce) - [ **Google Calendar to Slack** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/google-calendar-to-slack) - [ **Google Calendar to Google Sheets** Google Sheets](https://apiant.ai/connect/google-calendar-to-google-sheets) - [ **Google Calendar to Stripe** Stripe is a payment processing platform for online businesses.](https://apiant.ai/connect/google-calendar-to-stripe) - [ **Google Calendar to Shopify** Shopify is a commerce platform for online stores and retail point-of-sale.](https://apiant.ai/connect/google-calendar-to-shopify) ## More into ActiveCampaign - [ **Slack to ActiveCampaign** Slack is a messaging platform for teams. Post messages, manage channels, users, reminders, and react to...](https://apiant.ai/connect/slack-to-activecampaign) - [ **Mailchimp to ActiveCampaign** Mailchimp marketing automation and email platform.](https://apiant.ai/connect/mailchimp-to-activecampaign) - [ **QuickBooks Online to ActiveCampaign** QuickBooks Online accounting — manage customers, invoices, bills, payments, vendors, expenses, and more via...](https://apiant.ai/connect/quickbooks-online-to-activecampaign) - [ **Pipedrive to ActiveCampaign** Pipedrive is a sales CRM and pipeline management tool.](https://apiant.ai/connect/pipedrive-to-activecampaign) - [ **Airtable to ActiveCampaign** Organize anything with Airtable, a modern database created for everyone.](https://apiant.ai/connect/airtable-to-activecampaign) - [ **Trello to ActiveCampaign** Trello is a visual collaboration tool that organizes projects into boards, lists, and cards.](https://apiant.ai/connect/trello-to-activecampaign) Questions ## Google Calendar and ActiveCampaign, answered ### ### Can a meeting be booked into an open slot instead of a fixed time? Yes. The Find Free Slots action in Google Calendar returns open time on the calendars you name, and Create Event then books into one of them with the contact from ActiveCampaign as an attendee. ### ### How does ActiveCampaign learn that someone declined a meeting? The Attendee Response Changed trigger in Google Calendar fires when an RSVP becomes accepted, declined or tentative. From there you can use Add tag to contact or Add note to contact in ActiveCampaign so the record shows the response. ### ### What can start an automation from Google Calendar? Any of Google Calendar's 6 triggers in the catalog, including Attendee Response Changed, Event Canceled or Deleted, Event Created and Event Updated. Describe the moment in plain language and your agent picks the right one. ### ### What can your agent do in ActiveCampaign when something happens in Google Calendar? Any of ActiveCampaign's 84 actions, including Add note to contact, Add tag to contact, Get contact and Create abandoned cart. Your agent maps the data both ways and tests every scenario before it ships. ### ### Can it also run from ActiveCampaign to Google Calendar? Yes. When something happens in ActiveCampaign, your agent can act in Google Calendar too. This page covers both directions: ActiveCampaign's triggers and Google Calendar's actions are listed here as well. ### ### Do I have to build a connector for Google Calendar or ActiveCampaign? 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 ActiveCampaign 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.