> For the complete documentation index, see [llms.txt](https://doc.vapi.co/tr/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.vapi.co/tr/en/getting-started/initial-interrogation.md).

# Initial Interrogation

There is an important detail you need to know before making your first query:

{% hint style="info" %}
Vapi.co offers two distinct environments: Test and Live. Queries made in the Test environment do not count against your usage limits, but access is restricted to test data.  :tada:
{% endhint %}

We think your first query should be the drug list. 😄 You can access the drug list by following the steps below:

1. [Identity Verfication](/tr/en/getting-started/identity-verfication.md)  Define your IP address according to your environment as specified on the Authentication page and copy your API key.
2. Open Postman or a similar application, then review and implement the following sections found on the 💊 **Drug List** page: 🎉
   1. [Medication List](/tr/en/tr-turkey-datasets-and-api-reference/medicines/medication-list.md#curl-istek-oernegi)
   2. [Medication List](/tr/en/tr-turkey-datasets-and-api-reference/medicines/medication-list.md#postman-istek-oernegi)
   3. [Medication List](/tr/en/tr-turkey-datasets-and-api-reference/medicines/medication-list.md#cevap-oernegi)

A checklist like this might also be helpful:

* [x] Define an IP address for each environment.
* [x] Obtain the token created for your specific environment.
* [x] Select the endpoint and send a request to this method from your defined IP address using your token. Remember, token authentication uses the **Bearer Authentication** method.