To authorize the Contacts API, obtain your GHL credentials, choose OAuth2 or an API key approach, grant the requested scopes (such as contacts.readonly), and test the connection within Zapier.
In Zapier, connect the app by entering the Client ID and Client Secret, setting the redirect URI, and selecting the required Contacts API scopes for your workflows.
Endpoints include 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: Retrieve a contact’s details by ID to sync information into Leader CRM or your downstream tools.
Actions: fetch contact profile, map core fields (name, email, phone), and update your CRM records accordingly.
GET /contacts/:contactId
Key fields: contactId, firstName, lastName, email, phone, status
Trigger: When tasks for a contact are created or updated.
Actions: retrieve the list of tasks, filter by status, and create or update tasks in your project tools.
GET /contacts/:contactId/tasks
Key fields: taskId, title, dueDate, status, priority
Trigger: A change to a specific task, such as status or due date.
Actions: fetch task details, update status, or mark as completed.
GET /contacts/:contactId/tasks/:taskId
Key fields: taskId, status, title, notes
Automate data flow between Leader CRM and your tools without writing code.
Keep data in sync across systems with real-time or scheduled updates.
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This section defines endpoints, authentication, triggers, actions, data mapping, and error handling within the integration.
An API to read and write contact records in GHL.
A specific URL path used to perform an API operation.
An event that starts a Zapier workflow when data changes in GHL.
The method to verify identity and permissions, such as OAuth 2.0 or API keys.
Create a Zap that makes a new contact in Leader CRM whenever a new lead is added in your source system.
When a contact’s task is updated in GHL, push a corresponding task to your project management tool.
Automatically attach activity notes to the contact so history is centralized.
Gather your Client ID, Client Secret, and define the required scopes for Contacts.
Set up OAuth 2.0 or API token in the Zapier app and test permissions.
Connect accounts in Zapier and run tests to ensure data maps correctly.
The Contacts API lets you read and write contact data in Leader CRM. It supports common operations to fetch contact details, tasks, notes, appointments, and more. Use the read endpoints for syncing data and the write endpoints to create or update records as needed. This page provides examples and best practices to help you design reliable automations.
No heavy code is required. With the Zapier App Connector, you can set up zaps that connect GHL Contacts API to your tools using triggers and actions. Some basic data mapping and field matching will help ensure clean data flow, but no custom programming is needed for many use cases.
The integration includes both read and write endpoints. Not all endpoints are used on every page, but you can retrieve contact details, tasks, notes, and appointments, and you can create or update records where permitted. Review the endpoint list and tests to confirm what your workflow requires.
Authentication is handled via OAuth 2.0 or API keys. You’ll obtain client credentials from GHL, configure the redirect URI in Zapier, and grant the necessary scopes. Test the connection to verify permissions before building automations.
Yes. The Contacts API supports write operations such as creating and updating contacts and tasks. You can map fields from your source to GHL fields and trigger updates from your automation.
In Zapier, use the Test Connection and Sample Data features to verify the linkage. Check the connection status, run sample zaps, and review error messages to fix any misconfigurations.
Endpoint URLs appear in the API documentation and in this page’s Endpoint List. Payload schemas and field mappings are documented there; use example payloads to guide your integration design.
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Complete Operations Catalog - 126 Actions & Triggers
