# ­­­­­­­­DecisionTelecom API Overview

#### DecisionTelecom API Overview

**­­­­­­­­­**Explore our full API reference documentation and easily integrate SMS, Viber, WhatsApp, chat and voice capabilities into your website or application using DecisionTelecom APIs.

HTTPS is chosen as the transport layer of the DecisionTelecom API for the described protocol.

The access key is used as the basis for the authorization of the API. Request and response payloads are formatted as JSON (we also provide as alternative GET requests), using UTF-8 encoding and URL-encoded values.

**SDK**

The official DecisionTelecom API SDK libraries are available in multiple languages: <https://github.com/IT-DecisionTelecom>

**API Endpoint**

To use the DecisionTelecom APIs, you must first register for free on our website [www.decisiontele.com](http://www.decisiontele.com/)


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://en-api.decisiontele.com/decisiontelecom-api-overview.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.