Use OAuth 2.0 or API keys issued from your GHL account to securely authorize requests to the Contacts API endpoints.
In Zapier, securely store and rotate credentials, and use the provided OAuth flow to authorize the Contacts API actions.
Key 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, 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 kicks off a sync to the connected app.
Actions: Create or update a contact, attach notes, or update tags.
Example endpoint: GET /contacts/:contactId to fetch a single contact and PUT /contacts/:contactId to update details.
Key fields: id, name, email, phone, customFields
Trigger: When a new task is created for a contact, notify the app workspace.
Actions: Create task (POST /contacts/:contactId/tasks), update task status (PUT /contacts/:contactId/tasks/:taskId), mark completed (PUT /contacts/:contactId/tasks/:taskId/completed).
POST /contacts/:contactId/tasks
Fields: taskId, title, dueDate, status, contactId
Trigger: Notes or tags added in one system can trigger updates in another.
Actions: Create note (POST /contacts/:contactId/notes) and add tags (POST /contacts/:contactId/tags).
POST /contacts/:contactId/notes and POST /contacts/:contactId/tags
Fields: noteId, content, id, contactId, tags
No coding required — build powerful workflows with a few clicks.
Automate data flow across Contacts API and your apps to save time and reduce errors.
Leverage live data sync for real-time decision making.
This glossary defines common terms used in connecting GHL APIs, including endpoints, authentication, data fields, and data flow concepts.
OAuth 2.0 is an authorization framework that lets apps obtain limited access to user accounts without sharing passwords.
An API URL that performs a specific action, such as retrieving a contact.
A callback URL or service that delivers real-time updates when something changes.
The process of verifying identity to access a resource.
Capture form submissions from your website and create or update Contacts in GHL using the API to keep records current.
When a task is created in one app, mirror it in GHL as a related task for the contact.
Automatically attach notes to a contact in GHL when new tickets or messages come in.
Register or obtain your API key and OAuth client details from GHL.
Use Zapier’s OAuth flow or token-based auth to authorize the Contacts API.
Create triggers and actions for contacts, tasks, notes, and tags, then map fields.
No coding is required for most setups. The Zapier App Connector provides a no-code interface to connect with Contacts API endpoints. If you need custom logic, you can still map fields and apply simple filters to tailor the flow. This keeps things approachable while delivering powerful automation.
Start with retrieving data using GET /contacts/:contactId to fetch a record, then expand to create or update with POST or PUT endpoints. Validate mappings in a test environment and progressively add more endpoints like tasks, notes, and tags as your workflows grow.
Connections use OAuth 2.0 and secure tokens; store credentials in Zapier’s secure vault and rotate them periodically. Always use HTTPS and validate token scopes to minimize risk.
Yes. You can update existing contacts with PUT /contacts/:contactId. Map your fields carefully to avoid overwriting critical data, and consider versioning or soft updates where appropriate.
Tokens can expire; use the refresh flow to obtain new tokens. If you encounter 401 errors, re-authenticate or refresh tokens to restore access without downtime.
Yes. You can fetch related data such as tasks, notes, and appointments via GET endpoints. For large datasets, enable pagination and batching to manage results efficiently.
Yes, you can create tags with POST /contacts/:contactId/tags. Map tag names carefully and deduplicate to keep your data clean.
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Complete Operations Catalog - 126 Actions & Triggers
