Authenticate to the GHL Contacts API using OAuth 2.0 with a read-only scope (contacts.readonly) assigned to your Zapier app integration.
Zapier securely stores and uses the OAuth tokens to access GHL on behalf of your account, refreshing tokens as needed.
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: When a contact is viewed or updated in GHL, then sync related data in Zapier.
Actions: Create or update tasks, notes, and appointments in GHL based on Zapier data.
GET /contacts/:contactId
Key fields: contactId, name, email, phone
Trigger: Tag changes or notes added to a contact
Actions: Apply tags and sync notes back to GHL
GET /contacts/:contactId/notes
Key fields: contactId, notesId
Trigger: Appointments created or updated for a contact
Actions: Create/update appointments via POST /contacts/:contactId/appointments
GET /contacts/:contactId/appointments
Key fields: contactId, appointmentId
Zero-code automation to connect data across apps
Rapid deployment with pre-built endpoints and scalable actions
Easier maintenance and updates without custom development
Key concepts and processes explained to help you build, test, and optimize GHL + Zapier flows.
Application Programming Interface: a set of rules that enables different software to communicate.
Authorization framework that lets apps access protected resources on behalf of a user.
A URL path to a specific function in an API.
A way for an app to send real-time data to another app via HTTP requests.
Pull external data to enrich contact records when they are created or updated in GHL.
Automatically create tasks in a project management tool when a GHL contact is updated.
Sync appointments to a calendar or messaging app for reminders and follow-ups.
Register your Zapier App Connector in GHL and obtain client credentials.
Set the scope to contacts.readonly and configure your redirect URI for OAuth flow.
Connect endpoints like GET /contacts/:contactId and test data synchronization.
The Contacts API requires the requested scope for access. Make sure your OAuth token includes the contacts.readonly scope. If you need to write data, request a separate write scope and appropriate permissions. Review your GHL admin settings if access is denied.
Yes. For most reads, OAuth is required to securely authorize the app to access GHL data. If your integration needs write access, accompany OAuth with the proper write scopes and permissions. Tokens should be refreshed as needed.
The integration exposes endpoints for reading contacts, tasks, notes, and appointments, as well as creating and updating contacts, tasks, notes, and tags. See the Endpoints list for exact paths like GET /contacts/:contactId and POST /contacts/.
Yes. You can write back to GHL from Zapier by using endpoints such as POST /contacts/ and POST /contacts/:contactId/tasks, provided your OAuth scopes include write permissions.
In Zapier, create a connection, select the GHL app, and test the trigger/action by pulling sample data or performing a test request. Check the authentication status and scope.
Yes. Field mapping can be done in Zapier’s editor using built-in transforms. Map GHL fields (name, email, etc.) to the target app fields in your Zap steps.
API rate limits and quotas are defined by your GHL plan. Review the API documentation or your admin portal for current limits and best practices to avoid throttling.
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Complete Operations Catalog - 126 Actions & Triggers
