Skip to content
Go to file

Latest commit


Git stats


Failed to load latest commit information.
Latest commit message
Commit time


TeleSign C# SDK

TeleSign is a communications platform as a service (CPaaS) company, founded on security. Since 2005, TeleSign has been a trusted partner to the world’s leading websites and mobile applications, helping secure billions of end-user accounts. Today, TeleSign’s data-driven, cloud communications platform is changing the way businesses engage with customers and prevent fraud.

For more information about TeleSign, visit our website.


Code documentation is included in the SDK. Complete documentation, quick start guides and reference material for the TeleSign API is available within the TeleSign Standard Documentation.


To add the TeleSign C# SDK to your project, add Telesign to your packages.config:

<package id="Telesign" version="(insert latest version)" targetFramework="(insert framework)" />

.NET framework v4.5.2+ is required for the TeleSign C# SDK.


You will need a Customer ID and API Key in order to use TeleSign’s API. If you already have an account you can retrieve them from your account dashboard within the Portal. If you have not signed up yet, sign up here.


We make use of popular, feature-rich and well-tested open-source libraries to perform the underlying functionality of the SDK. These dependencies are managed by the community accepted package manager. If you are unable to add these additional third party dependencies to your project we have ensured that the SDK code is easy to read and can serve as sample code. We have also made sure that more complicated functions such as GenerateTelesignHeaders can be easily extracted from the SDK and used 'as is' in your project.

C# Code Example: Messaging

Here is a basic code example with JSON response.

string customerId = "FFFFFFFF-EEEE-DDDD-1234-AB1234567890";
string apiKey = "EXAMPLETE8sTgg45yusumoN6BYsBVkh+yRJ5czgsnCehZaOYldPJdmFh6NeX8kunZ2zU1YWaUw/0wV6xfw==";

string phoneNumber = "phone_number";
string message = "You're scheduled for a dentist appointment at 2:30PM.";
string messageType = "ARN";

MessagingClient messagingClient = new MessagingClient(customerId, apiKey);
RestClient.TelesignResponse telesignResponse = messagingClient.message(phoneNumber, message, messageType);
{'reference_id': 'DGFDF6E11AB86303ASDFD425BE00000657',
 'status': {'code': 103,
    'description': 'Call in progress',
    'updated_on': '2016-12-12T00:39:58.325559Z'}}

For more examples, see the examples project or visit the TeleSign Standard Documentation.

You can’t perform that action at this time.