Authenticate to securely access contact data from zcal using OAuth or API keys provided by the GHL Contacts API.
In zcal configure your connection with OAuth credentials or API keys to authorize requests to the Contacts API.
GET /contacts/:contactId; GET /contacts/:contactId/tasks; GET /contacts/:contactId/tasks/:taskId; GET /contacts/:contactId/notes; GET /contacts/:contactId/notes/:id; GET /contacts/:contactId/appointments; GET /contacts/; GET /contacts/business/:businessId; POST /contacts/; PUT /contacts/:contactId; DELETE /contacts/:contactId; POST /contacts/:contactId/tasks; PUT /contacts/:contactId/tasks/:taskId; PUT /contacts/:contactId/tasks/:taskId/completed; DELETE /contacts/:contactId/tasks/:taskId; POST /contacts/:contactId/tags
Trigger: A contact is updated in the Contacts API
Actions: Create a new task in zcal and optionally update the contact notes
/contacts/:contactId/tasks
contactId, taskTitle, dueDate, status
Trigger: New contact created in the Contacts API
Actions: POST to create a corresponding contact in zcal and map fields like name and email
/contacts/
name, email, phone, externalId
Trigger: Retrieve contact tasks via GET /contacts/:contactId/tasks
Actions: Create or update corresponding tasks in zcal and sync status
/contacts/:contactId/tasks
contactId, taskId, status, dueDate
Automate data flow between the Contacts API and zcal without custom code
Maintain a single source of truth by syncing records in near real time
Scale outreach and internal workflows with consistent data across platforms
This glossary explains core concepts and processes used when connecting the GHL Contacts API with zcal via the Zapier App Connector
Application Programming Interface a set of rules that enables apps to talk to each other
The process of verifying identity before granting access to resources
A specific URL in an API that performs a defined action or returns data
A method for one app to send real time data to another when an event occurs
Trigger due date reminders to populate zcal calendars and assign tasks automatically
Automatically create zcal contacts when new entries appear in the Contacts API and enrich with notes
Sync task updates from zcal back to Contacts API to keep teams aligned
Obtain OAuth credentials or API keys for both services and configure in Zapier’s connector
Define how contact fields map between the API and zcal for accurate synchronization
Build Zaps to trigger actions like creating tasks or notes when events occur
No coding experience is required. Use the connector to configure triggers and actions in a few clicks. If you are comfortable with basic data mapping you can tailor the fields that sync between Contacts API and zcal.
Read only endpoints fetch data such as contacts and notes. Write endpoints allow creating updating or deleting contacts and tasks. Map your chosen endpoints to your automation to control what can change in each system.
Yes. Use a staging or test workspace in Zapier or a sandbox environment to validate your Zaps before turning them on. Verify data flows and field mappings with sample records.
API rate limits depend on your GHL plan. If you hit limits you can space out requests or implement retry logic to avoid failures while maintaining data integrity.
Use OAuth where possible and keep API keys secret. Rotate credentials periodically and store them securely in your Zapier connection settings.
Note syncing is supported if notes endpoints are exposed. Attachments may require additional handling or a separate flow depending on the API capabilities.
API credentials are created in your GHL developer portal for the Contacts API and in zcal developer settings. Use those credentials to configure the Zapier app connection.
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Complete Operations Catalog - 126 Actions & Triggers
