Access to the Contacts API is secured by an API key or OAuth token with the required scope, such as contacts.readonly, to read contact data and related resources.
Configure OAuth 2.0 or API key authentication in Zapier App Connector to securely call the Contacts API and keep credentials refreshed automatically.
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
Zapier polls or subscribes to changes on a contact using GET /contacts/:contactId to trigger downstream actions like updating a CRM record or creating tasks.
Actions supported include creating or updating a contact, adding tasks with POST /contacts/:contactId/tasks, and appending notes with POST /contacts/:contactId/notes to keep systems in sync.
GET /contacts/:contactId
Key fields: contactId, name, email, phone
Trigger when tasks are created or updated for a contact by polling GET /contacts/:contactId/tasks
Actions include creating, updating, or completing tasks via POST /contacts/:contactId/tasks, PUT /contacts/:contactId/tasks/:taskId, and PUT /contacts/:contactId/tasks/:taskId/completed
GET /contacts/:contactId/tasks
Key fields: contactId, taskId, title, status
Trigger by polling GET /contacts/:contactId/notes to capture new or updated notes
Actions: create notes with POST /contacts/:contactId/notes, attach to the contact timeline, and push to downstream apps
GET /contacts/:contactId/notes
Key fields: contactId, noteId, content
Zero code automations let non developers connect data between GHL and your favorite tools
Reusable templates and workflows reduce setup time and maintenance
Rapid iteration with drag and drop automation builders keeps your team focused on outcomes
Core elements include endpoints, triggers, actions, and data fields; processes cover authentication, rate limits, pagination, and error handling to ensure reliable flows
A specific URL on the GHL API that returns or manipulates data, such as GET /contacts/:contactId
The method used to verify identity and permit access to API resources, typically OAuth tokens or API keys
An addressable resource or action available in an API, usually represented as a route
A named piece of information carried in requests and responses, such as contactId or email
Set up a trigger on new contact creation to automatically create or update records in your CRM and seed related tasks.
Use tags in Contacts API to drive tag-based automations in Zapier, enabling segmentation in marketing tools and CRMs.
Keep notes and tasks aligned by syncing updates from your CRM back into GHL via the Notes and Tasks endpoints.
In GHL, generate an API key or OAuth client and grant the needed scopes such as contacts.readonly to access contact data.
Add a new connection in Zapier using the Contacts API details, select the authentication method, and map fields across apps.
Run end to end tests, verify endpoint responses, and deploy your Zap to automate flows.
The Contacts API is a RESTful interface that lets you read and manage contact data across your GHL account, including contactId, name, email, and phone. It also provides endpoints to access related resources such as tasks, notes, and appointments. Use the API in Zapier App Connector to automate CRM workflows without writing code, by pulling data and sending updates between GHL and connected apps.
Yes, you can set up most automations without writing code by using the Zapier App Connector visuals. Drag and drop triggers, actions, and field mappings to connect data between the Contacts API and your tools. Some advanced flows may benefit from lightweight scripting or custom filters, but the majority of common automations can be built in minutes.
Supported authentication methods include OAuth 2.0 and API keys. Choose the method that matches your security needs and organizational policies. Keep credentials secure, rotate keys regularly, and renew tokens before they expire to maintain uninterrupted automations.
Common automations rely on endpoints such as GET /contacts/:contactId for retrieving contacts, GET /contacts/:contactId/tasks for task lists, and GET /contacts/:contactId/notes for notes. From there, you can create or update records using POST and PUT endpoints and manage tasks and notes with the respective routes. Map fields across Zapier to keep data consistent across apps.
If you hit rate limits, implement retries with exponential backoff and respect the API’s pagination. Monitor error codes returned by the Contacts API and handle transient failures gracefully in Zapier so workflows resume automatically when the API recovers.
Yes, bidirectional sync is possible but requires careful design to avoid duplicates and conflicts. Use idempotent actions, consider using a unique external ID, and implement conflict resolution rules to keep data consistent across GHL and connected apps.
Credentials are created in the GHL account for API access and in Zapier App Connector for the connection. Renew credentials before they expire and rotate keys regularly. Store credentials in a secure vault and follow your organization’s security policies for credential management.
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