Authenticate requests using OAuth 2.0 with your GHL developer credentials. Obtain an access token and pass it in the Authorization header for each API call.
In Zapier, configure OAuth2 (or API key) in your app settings and provide the client ID, client secret, and redirect URL. Test the connection in the Apps tab.
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: contact created or updated in GHL; Action in Zapier: upsert contact in connected apps.
Actions: upsert contact, attach tasks, add notes across systems.
GET /contacts/:contactId for retrieving contact data
contactId, name, email, phone
Trigger: new or updated tasks/notes; Action: create or update in Zapier.
Actions: create task, update notes, mark completed.
GET /contacts/:contactId/tasks
taskId, noteId, taskStatus
Trigger: any major CRM event; Action: synchronize related data across apps.
Actions: bulk fetch, upsert, and link businessId relationships.
GET /contacts/
contactId, businessId, appointments
Automate repetitive data entry and update records without writing code.
Orchestrate cross-app workflows from a single Zapier blueprint.
Achieve real-time sync and accurate data across your CRM.
This section covers endpoints, authentication, triggers, actions, and common data fields you’ll work with when integrating the Contacts API with Zapier App Connector.
Application Programming Interface: a defined set of calls that lets apps request and exchange data.
URIs that expose specific resources in an API and support verbs like GET, POST, PUT, PATCH, DELETE.
The process of verifying identity and granting access tokens or keys to API clients.
Event-driven notifications that deliver real-time updates from an API to your app.
Pull contact data from GHL when a new lead is created and push it to your CRM in Zapier.
Create tasks in GHL from project updates in your project management app.
Sync notes attached to contacts across apps for better context.
Create a GHL developer app, generate client ID and secret, and set the redirect URL for OAuth.
Authorize the app in GHL, then test a few API calls to verify access and permissions.
Create Zaps that trigger on Contacts API events and perform downstream actions in connected apps.
The Contacts API exposes endpoints for managing contacts, tasks, notes, and more. You can retrieve a single contact, fetch associated tasks and notes, and work with business data where supported. Use these endpoints to read data and feed automations in Zapier. For example, GET /contacts/:contactId returns a contact object you can use in downstream steps. Leverage endpoints like POST /contacts/ to create new records or PUT /contacts/:contactId to update existing ones as part of your Zapier workflows.
Authentication for the GHL Contacts API uses OAuth 2.0. You will obtain an access token from your GHL developer credentials and include it in the Authorization header of each request. In Zapier, configure the app to use OAuth 2.0 and complete the OAuth handshake to authorize the connection. Test the connection to ensure tokens are being issued and refreshed correctly. Keep your client secret secure and rotate credentials as recommended by your security policy.
Yes. You can update and delete contacts through Zapier by using PUT and DELETE requests against endpoints like /contacts/:contactId. Upsert operations (where supported) can minimize duplicate records. Ensure you handle permissions and confirm the operation results in Zapier steps to verify success. Always test destructive actions in a staging environment before applying changes to production data.
Tasks and notes can be created, updated, and retrieved through endpoints such as /contacts/:contactId/tasks and /contacts/:contactId/notes. Use triggers in Zapier to respond to changes and push updates across connected apps. This enables a centralized view of activity and ensures notes and tasks stay in sync across platforms. Consider batching updates when possible to minimize API calls and improve reliability.
API rate limits depend on your GHL plan and endpoint usage. While typical calls are lightweight, avoid excessive polling by using webhooks or event-driven triggers where available. If you hit limits, implement exponential backoff and retry logic in your Zapier workflows to maintain reliability.
To test your connection in Zapier, run the app’s connection test or create a simple Zap that triggers on a known event. Verify that authentication succeeds, data can be read, and actions such as creating a contact or task complete as expected. Review any error messages and adjust scopes or permissions as needed. Utilize test data to avoid impacting live records during validation.
At minimum, you’ll need essential contact fields such as name and identifier (contactId or email) to create or update a contact. Depending on your use case, include additional fields like phone, notes, and associated business information. Some endpoints require a businessId for proper scoping. Always review the API schema for required fields for the specific operation.
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Complete Operations Catalog - 126 Actions & Triggers
