Calls to the Contacts API require a valid OAuth 2.0 access token with the appropriate scope. Use your GHL credentials to obtain the token and send it in the Authorization header.
When connecting Grassrootz to the Contacts API, the app uses the same access token to authorize requests. Keep tokens secure and rotate regularly.
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 when a contact is retrieved to start a workflow
Actions include fetching contact details, associated tasks, notes and appointments
GET /contacts/:contactId
contactId, name, email, phone, status
Trigger when a contact is created or updated to sync with the Contacts API
Actions: POST /contacts/ to create, PUT /contacts/:contactId to update
POST /contacts/; PUT /contacts/:contactId
name, email, phone, businessId
Trigger when syncing a business scope to pull related contacts
Actions: GET /contacts/business/:businessId and map results
GET /contacts/business/:businessId
businessId, limit, page
Automate contact management and workflows without writing code
Create scalable processes with triggers and actions inside Grassrootz
Improve data accuracy by centralizing field mapping between Grassrootz and the Contacts API
This glossary covers authentication, endpoints, triggers, actions, and data mapping common to Grassrootz and the Contacts API
Verifying identity and obtaining credentials to access the API, typically via OAuth 2.0 or API keys
A specific URL path that performs an operation on the API
A token used to authorize API requests within a defined scope
A callback URL that receives real time event data from the API
Submit Grassrootz form data to POST /contacts/ to create new contacts in the Contacts API
When a contact updates, automatically create or update tasks with POST /contacts/:contactId/tasks
Pull notes and events via GET /contacts/:contactId/notes to trigger alerts
In GHL, create OAuth credentials for the Contacts API and copy client_id and client_secret
Run the OAuth flow in Grassrootz to obtain an access token with the contacts.readonly scope
Map Grassrootz fields to Contacts API fields and run a test call
No coding is required thanks to the no code bridge between Grassrootz and the Contacts API. Configure triggers, actions, and field mappings in the app interface. For scenarios needing more control, you can still call the API directly.
Core endpoints include GET /contacts/:contactId, POST /contacts/, PUT /contacts/:contactId, and GET /contacts/business/:businessId. You can also fetch related data such as tasks, notes, and appointments to enrich workflows.
Use OAuth 2.0 tokens in the Authorization header. Keep tokens secure and refresh before expiry. Follow best practices for token storage.
Yes you can create new contacts with POST /contacts/ and update existing ones with PUT /contacts/:contactId. You can also update related tasks and notes via their endpoints.
For large lists, use pagination with limit and page parameters on GET endpoints such as /contacts/business/:businessId. The API supports paging to help you navigate results.
Rate limits are in place to avoid abuse. If you hit a limit, back off and retry with exponential backoff. Monitor quota usage in your GHL account.
Endpoint documentation is available in the GHL API docs and the Grassrootz integration guide. The quick reference ENDPOINTLIST section shows all supported calls.
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Complete Operations Catalog - 126 Actions & Triggers
