The GSMtasks API is a RESTful web service for developers to programmatically interact with GSMtasks data, real-time delivery and task management and route optimization functionality.

GSMtasks screenshot

The GSMtasks API is organized around REST. Every bit of data exchanged between clients and the API is JSON over HTTPS. All API requests must be made over HTTPS. Calls made over plain HTTP will fail. You must authenticate for all requests.

The base URL for the GSMTasks API is


Technical API documentation can be found at

If you have questions about using the API, or have come across a bug you'd like to report, write us an email at