Use your GHL API key with the scope contacts.readonly to begin. Some setups may require OAuth depending on your security preferences; follow the navigator prompts to authorize access for your GHL account.
Connect the Zapier App Connector to your GHL account using the provided OAuth flow or API key method. Ensure the app has permissions to read contacts and write 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 updated in ActiveDEMAND, fetch the latest details.
Actions: Get contact details; List tasks; Retrieve notes and appointments.
HTTP GET to /contacts/:contactId
contactId, lastModified
Trigger: New lead in the source system.
Actions: POST /contacts/; PUT /contacts/:contactId
HTTP POST to /contacts/ to create, or PUT to /contacts/:contactId to update
contactId, email, firstName, lastName
Trigger: Note added or tag updated in ActiveDEMAND
Actions: POST /contacts/:contactId/notes; POST /contacts/:contactId/tags
HTTP POST to /contacts/:contactId/notes; POST to /contacts/:contactId/tags
contactId, noteId, tag
Low-code setup: Connect in minutes without writing code
Automated data sync between ActiveDEMAND and your apps
Flexible workflows with triggers, actions, and filters
Definitions of API endpoints, triggers, actions, and data fields used in this guide.
A specific route in the GHL API used to perform a function.
An event that starts an automation or workflow in Zapier.
An operation performed in response to a trigger to update or retrieve data.
A callback URL used to receive real-time updates from an external system.
Automatically create or update contact records in GHL when new ActiveDEMAND leads are created, ensuring data consistency.
Push contact tasks and notes to project management tools or Slack when updated.
Start automated onboarding sequences in your CRM when a new contact is added via the API.
Register your app in Zapier and generate API keys; note scope: contacts.readonly.
Map the endpoints you need (GET /contacts/:contactId, etc.) into Zapier triggers and actions.
Run tests in Zapier, verify data flows, then go live with your automation.
The Contacts API in GHL is a RESTful interface that lets you read, create, update, and delete contact data, as well as retrieve related information like tasks, notes, and appointments. It enables programmatic access to your ActiveDEMAND contact records for syncing with external apps. Typical use cases include activity monitoring, automated contact updates, and triggering workflows based on contact changes. By connecting via the Zapier App Connector, you can automate these processes without custom coding.
No heavy coding is required. Use Zapier as the orchestrator to define triggers and actions that map to GHL API endpoints. Start by obtaining API keys, configure the required scopes (e.g., contacts.readonly), and then build your first Zap with a trigger (contact updated) and actions (retrieve or update data). If you do need advanced logic, you can incorporate simple filters and multi-step actions within Zapier.
For basic sync you’ll typically need endpoints like GET /contacts/:contactId to read a contact, POST /contacts/ to create, and PUT /contacts/:contactId to update. Pull in related data such as tasks and notes via GET /contacts/:contactId/tasks and GET /contacts/:contactId/notes to enrich your workflows. This provides a solid foundation for keeping records aligned across systems.
Authentication is handled through API keys with the appropriate scope or via OAuth in the Zapier flow. Ensure your GHL account grants the app the necessary permissions to read (and write if needed) contact data. In Zapier, follow the prompts to link your GHL account securely, and test connectivity before automation.
Yes. The RESTful endpoints allow creating, updating, and deleting contacts, tasks, and notes. When enabled, you can modify data such as contact fields, add tasks, update task status, and attach notes. Use caution with write operations and validate changes in a test environment before deploying to production.
Rate limits depend on your GHL plan and API access level. Plan for typical usage by keeping batched requests reasonable and leveraging caching where possible. If you approach limits, stagger requests or upgrade your plan as needed. Always monitor your Zapier task history for any throttling notifications.
The best way to test endpoints is to use a staged Zapier test flow with a sandbox or test account. Begin with simple GET requests to verify connectivity, then add a trigger and a basic action. Review responses for status codes and data accuracy, adjust mappings, and retest until everything passes in the test environment.
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Complete Operations Catalog - 126 Actions & Triggers
