To use the Contacts API, you’ll authenticate requests with your API key or OAuth token. The available scope is contacts.readonly, which allows read access to contact data, tasks, notes, and related resources.
Zapier App Connector authenticates with GHL using OAuth 2.0 or API key exchange. Credentials are stored securely in Zapier and reused for subsequent requests to the Contacts API.
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: When a contact is created or updated in GHL, fetch the latest details immediately in Zapier.
Actions: Update or create a corresponding contact in your app, fetch related tasks and notes.
Method/path: GET /contacts/:contactId
Key fields: contactId, name, phone
Trigger: Scheduled sync to batch update multiple contacts in one go.
Actions: Bulk update, apply tags, and attach notes across records.
Method/path: GET /contacts/ and POST /contacts/ for bulk operations
Key fields: contactId, businessId, tags
Trigger: Webhook events for contact lifecycle changes (create/update/delete).
Actions: Create tasks, add notes, or update phone validation fields in GHL.
Method/path: POST /contacts/:contactId/tasks or PUT /contacts/:contactId/tasks/:taskId
Key fields: contactId, taskId, status
Automate phone validation without writing code, keeping data accurate across your tools.
Validate and enrich contacts in real time, reducing manual data entry.
Create repeatable, scalable workflows that save time and improve engagement.
A quick glossary of common elements and processes used when connecting GHL Contacts API with the Zapier App Connector.
A specific URL path in an API that performs a defined action, such as retrieving a contact or updating a record.
A method to verify identity and authorize access to API resources (e.g., OAuth 2.0, API keys).
A mechanism for receiving real-time updates from an external service by sending an HTTP POST to a configured URL.
An authorization framework that enables access to resources without exposing user credentials.
Trigger when a new contact is created in GHL, validate the phone number via the Contacts API, and update the contact with the validation result.
When a lead status changes, validate the phone and notify the sales team if the result is invalid.
Build a dashboard that shows validation results pulled through the API and flags records that require human review.
Create an app connection in Zapier and authorize access to GHL’s Contacts API using your credentials.
Map key contact fields (name, phone) and configure triggers for changes in GHL.
Run test connections, review logs, and deploy the workflow to production.
The GHL Contacts API provides programmatic access to contact data and related resources like tasks, notes, and appointments. It enables apps and automation platforms to retrieve, create, update, and manage contact records. By using the API, you can build no-code or low-code automations that scale with your processes. Ensure you request the appropriate scope (e.g., contacts.readonly) for read-only access. For read-heavy workflows, consider caching results where appropriate to improve performance.
Authentication is typically done via OAuth 2.0 or an API key exchange. In Zapier, you can configure a connection that securely stores credentials and attaches the required access token to each request. Always protect credentials and rotate keys periodically. If you’re using OAuth, ensure the redirect URL is registered in your GHL app settings.
The endpoints cover common operations on contacts, tasks, notes, and appointments. Examples include: GET /contacts/:contactId to fetch a contact, POST /contacts/ to create, PUT /contacts/:contactId to update, and DELETE /contacts/:contactId to remove. Use GET /contacts/ for listing, and explore related resources like tasks and notes for a fuller picture of each contact.
Yes. Webhooks can be used to notify Zapier of changes in GHL data. You can configure webhooks to trigger on contact events and pass relevant payloads to Zapier for downstream automation. This enables real-time syncing without polling. Ensure your endpoint is reachable and secured.
No traditional coding is required for many Zapier automations. The connectors provide trigger and action blocks, field mappings, and conditional workflows. Some advanced scenarios might require light scripting, but most phone validation workflows can be built with standard Zapier steps.
Rate limits apply to API calls. If you hit limits, implement exponential backoff, batch requests where possible, and stagger non-critical tasks. Monitoring and alerting help you adjust schedules and maintain reliable automation.
Common errors include invalid credentials, insufficient scope, and incorrect endpoint usage. Check your authorization header, verify the endpoint URL, and ensure required fields are provided. Use the API documentation and Zapier’s test tools to reproduce and troubleshoot issues.
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