Access to the GHL Contacts API is secured with OAuth 2.0 tokens and API keys. Store credentials securely and rotate regularly.
Your app should request and refresh access tokens to authorize calls to the GHL API, following the standard OAuth flow your app uses for other services.
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; API permission: 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 updated in GHL, push changes to Your App.
Actions: update or create contact in Your App, sync related tasks and notes.
Method/Path: GET /contacts/:contactId with related endpoints for tasks and notes.
Key fields: contactId, firstName, lastName, email, phone.
Trigger: scheduled batch sync (e.g., nightly) to push large contact updates.
Actions: create or update multiple records in Your App; handle upserts.
Method/Path: POST /contacts/ with batch payload.
Key fields: contactId, batchSize, timestamp.
Trigger: GHL webhook events for changes to contacts, notes, or tasks.
Actions: trigger updates in Your App when those events fire.
Method/Path: Webhook listener in Your App to receive GHL event payloads.
Key fields: eventType, payload, timestamp.
No-code connectors speed up setup and reduce custom development.
Automations run between GHL and Your App without writing code.
Scalable data syncing that grows with your contact base.
This section defines core elements: endpoints, triggers, actions, and data fields you’ll map between GHL and your app.
A set of rules that lets software programs communicate with each other.
An authorization framework that lets apps obtain limited access to user data.
A specific URL path in an API that performs an action.
A user-provided URL that receives real-time data from another service.
Pull contact data from GHL and populate lead records in Your App to speed up outreach.
Create tasks in GHL from App events to ensure timely follow-ups.
Aggregate contact data from GHL into Your App for unified dashboards.
Obtain OAuth tokens with proper scopes for contacts.readonly and related endpoints.
Map the GHL endpoints to your app data fields (contacts, tasks, notes, appointments) and set up data syncing.
Run tests, monitor data integrity, handle errors, then go live.
You can sync core contact data, tasks, notes, and appointments between GHL and Your App. Map fields like firstName, lastName, email, phone, and status to ensure consistent records. Utilize both pull and push endpoints to maintain data parity across platforms.
Use OAuth 2.0 with access tokens and refresh tokens; generate client credentials in your GHL account. Store tokens securely, rotate keys regularly, and implement token refresh automation. Apply least privilege scopes to limit access to only what is needed.
Yes, there are rate limits that vary by plan. Plan your syncs with batching when possible to reduce calls. If you approach limits, implement exponential backoff and staggered schedules.
Yes, you can update tasks and notes using PUT and POST endpoints. Include the resource IDs in the URL and ensure idempotent operations with proper sequencing and conflict handling.
No-code options exist via connectors like Zapier or native automation features. For more complex workflows, light scripting can help with field mappings and error handling.
Yes — you can trigger actions from Your App to GHL using webhooks or dedicated endpoints. Map events such as contact updates to corresponding GHL actions to maintain parity.
Implement robust retry logic with exponential backoff and idempotent endpoints. Log failures, alert on persistent errors, and test retries in a staging environment.
Due to high volume, we will be upgrading our server soon!
Complete Operations Catalog - 126 Actions & Triggers
