Requests to the Contacts API require valid OAuth tokens or API keys issued to your SMSAPI app with the appropriate scope (for example, contacts.readonly). Store credentials securely and rotate regularly.
Configure your SMSAPI app to exchange tokens with the Contacts API. Use the client credentials flow or suitable OAuth method and keep client secrets safe.
Includes endpoints for contacts, tasks, notes, and appointments.
Trigger: retrieve a contact profile on demand.
Actions: fetch contact, pull related tasks, notes, and appointments.
GET /contacts/:contactId
Key fields: contactId, name, email, phone, status
Trigger: load all tasks for a given contact.
Actions: list tasks, filter by status, sort by due date.
GET /contacts/:contactId/tasks
Key fields: taskId, title, dueDate, status
Trigger: fetch a single task by ID.
Actions: retrieve task details, mark as completed, update notes.
GET /contacts/:contactId/tasks/:taskId
Key fields: taskId, title, status, completed
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This glossary explains API, endpoint, authentication, webhooks, and related concepts used when linking SMSAPI with the Contacts API.
An Application Programming Interface that exposes endpoints you can call to manage data in the Contacts API from SMSAPI.
Methods for validating identities and permissions, such as OAuth tokens or API keys, used between SMSAPI and the Contacts API.
A specific URL path to perform an operation on the Contacts API.
A URL that receives real-time notifications when data changes occur in the GHL Contacts API or SMSAPI.
Automatically pull contact notes when a task is created to provide context.
Use due date to create SMSAPI reminders.
Send a weekly digest of contact activity via SMSAPI.
SMSAPI and the Contacts API support OAuth 2.0 token-based authentication. Use your SMSAPI app’s client credentials to request an access token authorized for the Contacts API with the appropriate scope. Store tokens securely and rotate them regularly to maintain access. The token should be included in the Authorization header of each API request.
Start with GET /contacts/:contactId to retrieve a profile for a new contact. Then pull related data like tasks and notes with GET /contacts/:contactId/tasks and GET /contacts/:contactId/notes to build a complete picture. Use the responses to map fields into SMSAPI workflows.
Yes. If you have the right permissions, you can update records with PUT endpoints such as PUT /contacts/:contactId to modify a contact and PUT /contacts/:contactId/tasks/:taskId to update a task. Ensure you validate changes and handle conflicts gracefully.
Rate limits vary by plan and API usage. Refer to the official docs or your account details to confirm current limits. Implement exponential backoff for 429 responses and monitor your usage to avoid interruptions.
Data mapping involves aligning core fields like name, email, phone, and custom fields between SMSAPI and the Contacts API. Use the endpoints’ responses as a source of truth and map fields in your workflows or in a middleware layer.
Webhooks provide real-time updates when data changes occur in either system. Configure your webhook URL in SMSAPI or the Contacts API settings and validate signatures to ensure secure delivery.
Credentials are found in your SMSAPI app settings and in the Contacts API integration guide. The endpoints and their base URLs are listed in the docs, and the integration guide provides example calls and payload schemas.
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