> For the complete documentation index, see [llms.txt](https://docs.signius.eu/api/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.signius.eu/api/getting-started.md).

# Getting Started

## Step1

First you need to register and activate a test account on the **SIGNIUS Professional** Sandbox Environment.

```url
https://sp-demo.signius.eu/#/login
```

### Step 2

Please share your e-mail provided during the registration process above with us: <business.support@signius.eu> and let us know if you want to use a certificate or an API\_KEY based authentication.

{% hint style="info" %}
If you want to use your own certificate,  please send the generated certficate (.cer) directly to: <business.support@signius.eu>.
{% endhint %}

### Step 3

The test certificate or API\_KEY will be assigned to your test email account by our team.

### Step 4

After obtaining the development account, use **SIGNIUS API** in a test mode e.g. through POSTMAN.

**Port 8970:**

Communication encryption is secured by an SSL certificate, so to connect using port 8970, you need to use:

**Postman:**

* API\_KEY or certificate

After contacting <business.support@signius.eu>, you will receive a POSTMAN collection (which will allow you to test our API via port 8970) and all other necessary files.

The POSTMAN collection contains parameters and descriptions of all API endpoints.