Use OAuth 2.0 tokens with the scope contacts.readonly. Include the access token in the Authorization header when calling endpoints.
Store and rotate app credentials securely. Use server side storage and encrypted secrets to protect tokens.
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
Triggered when a contact is added or updated in Your App to pull the latest contact data and related tasks.
Sync contact details and associated tasks into Your App and update the local CRM.
GET /contacts/:contactId
contactId, id, name, email, tasks
Triggered when notes are added or updated in Your App to fetch notes from the Contacts API.
Sync notes into Your App and build a searchable note history.
GET /contacts/:contactId/notes
noteId, id, content, date
When a new task is created in Your App, create a corresponding task in GHL for the contact.
Create task in Contacts API; update status; link to contact.
POST /contacts/:contactId/tasks
contactId, taskName, dueDate, status
Fast setup with REST endpoints and no code required.
Real time data sync for contacts, tasks, and notes to keep everything up to date.
Secure, token based authentication and scoped access ensures data protection.
Overview of elements and processes used in the integration between GHL Contacts API and Your App
A specific URL that performs an action or returns data when called
Authorization framework for obtaining access tokens securely
Permissions granted to an access token to limit its actions
A data entity in the API such as a contact, note, or task
Capture new contacts from a form in Your App and create them in the Contacts API with an initial task
Automatically generate tasks in GHL when your app records new activities
Tag and segment contacts based on notes retrieved from the notes endpoint
Create an OAuth client or API key in GHL and configure redirect URIs for your app
Make sample requests to endpoints like GET /contacts/:contactId and map data fields to your app schema
Set up automated syncs retries and alerting for failures
Use OAuth 2.0 to obtain access tokens with the required scope. When using OAuth, store tokens securely and rotate them on a regular cadence. If you must use an API key, treat it as a secret and pass it in a safe header as instructed by the API docs.
Common endpoints for syncing include GET /contacts/:contactId to fetch core data, GET /contacts/:contactId/tasks for tasks, and GET /contacts/:contactId/notes for notes. POST /contacts/ creates new contacts, while PUT and DELETE endpoints update or remove data as needed.
Respect rate limits by checking response headers and implementing exponential backoff retries. Cache results when appropriate and design idempotent operations for safety across retries.
No code options exist via app connectors and automation platforms like Zapier. These tools let you connect your app to the Contacts API without building a backend, while still enabling data flows and task automation.
Yes. You can pull notes and tasks for a contact using the notes and tasks endpoints and then store them in your app. This enables rich context for contacts and better segmentation.
Use incremental syncs, webhooks, and scheduled fetches to keep data aligned. Map fields carefully and monitor for conflicts to maintain data integrity.
Store tokens securely, use rotation and expiry handling, and restrict token scope to the minimum required. Use server side storage and encrypted environments to protect credentials.
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Complete Operations Catalog - 126 Actions & Triggers
