Use OAuth or an API key to securely access the Contacts API. You will need credentials with the contacts.readonly scope (and broader scopes if writing is required).
In Zapier, configure the app’s OAuth2 or API key settings to securely sign requests to the Contacts API and store credentials in connections.
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. Additional endpoints exist under the 54-endpoint list, but the above are the primary read and write operations available with the current scope.
Trigger: When a contact is updated, fetch the latest contact details along with related tasks, notes, and appointments.
Actions: Retrieve contact details; pull tasks, notes, and appointments; optionally create an associated task in response.
Key paths: GET /contacts/:contactId; GET /contacts/:contactId/tasks; GET /contacts/:contactId/notes; GET /contacts/:contactId/appointments
Key fields: contactId, updatedAt, status
Trigger: A new or updated task in your system triggers a corresponding task in GHL for the related contact.
Actions: POST /contacts/:contactId/tasks; PUT /contacts/:contactId/tasks/:taskId; mark tasks as completed with PUT /contacts/:contactId/tasks/:taskId/completed.
Paths: POST /contacts/:contactId/tasks; PUT /contacts/:contactId/tasks/:taskId; PUT /contacts/:contactId/tasks/:taskId/completed
Key fields: contactId, taskId, completed
Trigger: When a contact is created or updated, apply tags to categorize the contact for segmentation.
Actions: POST /contacts/:contactId/tags to add or update tags for the contact.
Paths: POST /contacts/:contactId/tags
Key fields: contactId, tags
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This section defines core elements: endpoints, triggers, actions, fields, and data flow for the Contacts API and the Zapier App Connector.
GHL API is the RESTful interface that exposes contacts, tasks, notes, appointments, and related data for programmatic access.
An endpoint is a specific API URL and HTTP method used to perform an operation, such as GET /contacts/:contactId.
A Trigger is an event in GHL data that starts a Zapier workflow, such as a contact.updated event.
An Action is an operation performed in response to a Trigger, such as creating a task or updating a contact.
Create a Zap that imports new contacts into your system and assigns a welcome task automatically.
Set up two-way data flow so changes in your CRM reflect in GHL and vice versa.
Automatically apply stage-based tags when a contact reaches a new milestone in your pipeline.
Obtain your API key or OAuth credentials from your Contacts API account and configure them in Zapier.
Choose triggers like contact_updated or new_task and map fields to Zapier.
Define actions such as create_task, update_contact, or add_tags, then run tests to verify data flow.
Access to the Contacts API requires credentials with the appropriate scope. For read-only tasks, the contacts.readonly scope is sufficient. If you need to modify data (create, update, or delete), you will need broader scopes and proper approval from your GHL account administrator. Always follow least-privilege principles when granting access. Keep credentials secure in your Zapier connections.
With the provided scope of contacts.readonly, you can view contacts, their tasks, notes, and appointments. Write operations require additional permissions defined by your API key or OAuth configuration. Ensure your app connector is configured with the minimum necessary scope for each workflow.
Endpoints include read operations like GET /contacts/:contactId and related resources (tasks, notes, appointments), as well as write operations such as POST, PUT, and DELETE for contacts, tasks, and tags. A full list exists in the endpoint guide, with examples and required parameters. Use the endpoints that match your workflow and security requirements.
In Zapier, select the Contacts API app, choose the appropriate authentication type (OAuth2 or API Key), and provide your client credentials or token. Save the connection and test the authentication to ensure subsequent steps can access the API.
Use Zapier’s test action to run sample requests against the endpoints. Verify responses, handle pagination if needed, and map fields to your target apps. Debug any errors by checking the connection credentials and endpoint permissions.
Yes. You can automate tagging by using a POST /contacts/:contactId/tags call in response to triggers. Map the contactId and desired tags and validate the results in a test run.
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Complete Operations Catalog - 126 Actions & Triggers
