Use OAuth 2.0 with the scope: contacts.readonly to securely access contact data.
In Zapier, authorize the GHL Contacts API connection to allow calls to endpoints like GET /contacts and POST /contacts.
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, contacts.write, 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: New or updated contact in GHL triggers a Zap to create or update a contact in your system.
Actions: Use POST /contacts/ to create or PUT /contacts/:contactId to update; optionally attach tasks, notes, or tags using related endpoints.
Key calls: GET /contacts/:contactId and POST /contacts/ to create.
Key fields: contactId, email, firstName, lastName.
Trigger: Task events for a contact in GHL.
Actions: Create or update tasks via POST /contacts/:contactId/tasks and PUT /contacts/:contactId/tasks/:taskId.
Calls: GET /contacts/:contactId/tasks and PUT /contacts/:contactId/tasks/:taskId.
Fields: contactId, taskId, title, status, dueDate.
Trigger: New notes or tags added for a contact.
Actions: POST /contacts/:contactId/notes, POST /contacts/:contactId/tags.
Calls: GET /contacts/:contactId/notes, POST /contacts/:contactId/notes, POST /contacts/:contactId/tags.
Fields: contactId, notesId, tagId, content.
Automate routine CRM tasks without writing code.
Orchestrate data across endpoints like notes, tasks, and tags with clicks.
Set up triggers and actions to keep data in sync across tools.
Essential concepts to understand when integrating GHL Contacts API with Zapier App Connector.
A person in your GHL workspace whose data can be read or updated via the API.
A specific API path you call to perform an action on data, such as /contacts or /contacts/:contactId.
The standard authorization framework used to securely grant access to APIs.
A note attached to a contact, retrievable via /contacts/:contactId/notes.
Capture new lead data from forms and push into Contacts API via Zapier.
Automatically append a note to the contact after a task is completed.
Apply tags to contacts when certain conditions are met in your workflow.
OAuth flow to grant read-only access to contacts data.
Authorize the connection and select the Contacts API in your Zap templates.
Create a test Zap to verify data flow between GHL and your app.
Answer to Q1: The Contacts API exposes endpoints for retrieving, listing, and managing contacts, notes, tasks, and tags. You can GET, POST, PUT, or DELETE where supported to sync data with your other tools. Start by authenticating with OAuth 2.0 and granting the required scope to access contact data. Then configure your Zap to trigger on new or updated contacts and perform actions like creating or updating records in your apps.
Answer to Q2: Use OAuth 2.0 for secure access and connect the Zapier App Connector to your GHL Contacts API credentials. In Zapier, create a connection and test by pulling a sample contact. The connection will prompt for scope and permissions as part of the OAuth flow.
Answer to Q3: Yes. You can read and write via endpoints such as GET /contacts/:contactId, POST /contacts/, PUT /contacts/:contactId, and DELETE /contacts/:contactId, along with endpoints for tasks, notes, and tags.
Answer to Q4: Notes and tasks are accessible through dedicated endpoints like GET /contacts/:contactId/notes, POST /contacts/:contactId/tasks, and others. You can create, update, or fetch related data as part of automation workflows.
Answer to Q5: Rate limits are documented in the API docs and depend on your plan. Plan for bursts and implement retries with exponential backoff in Zapier.
Answer to Q6: Build a test Zap with a sample contact, test the trigger, and verify actions execute against the Contacts API endpoints. Use sandbox data if available.
Answer to Q7: Yes. API docs and examples for endpoints, authentication, and payload schemas are available in the developer docs.
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