SMS Service Plans, Service Plan IDs and API Tokens

Shahzad_Ismail — Fri, 22 May 2026 07:51:07 GMT

Note: This article describes the behavior of the standalone SMS API, and it is being maintained for existing customers only. New customers will access SMS functionality through Sinch's Conversation API. For information on where to find your SMS channel's Service plan ID, see Where can I find my SMS channel's Service plan ID?.

When sending SMS messages, using either the standalone SMS API, you need an API Token and Service Plan ID to authenticate calls to the API. These tokens are created automatically in the Sinch Build Dashboard with each service plan. A Service Plan is assigned to you when you create an account on the Customer Dashboard.

Where can I find my Service Plan ID and API Token

To find your Service Plan ID and API Token:

Log in to the Sinch Build Dashboard.
Select SMS from the left menu and select the Service APIs option. The Service APIs page is displayed:

This page shows you your Service Plans.

Your Service Plan ID is displayed in the SERVICE PLAN ID column.

Your API Token is available in the API TOKEN column but is partially obscured for security. Click Show to reveal it in its entirety.

Note: Most of our endpoints will request your Service Plan, API Token, and Sinch phone number. So, keep them handy.

article SMS Service Plans, Service Plan IDs and API Tokens in SMS

SMS Service Plans, Service Plan IDs and API Tokens

Where can I find my Service Plan ID and API Token