# Get started

The TEOS API is currently only available via subscription. A free or trial version is not available. Since all data and information generated and processed via the TEOS API belong to your subscription, we set up a separate workspace for it. We call this a "tenant".

Contact CoreLedger and obtain a subscription. You can use [use this form](https://coreledger.net/contact/) to request a meeting with a manager to onboard you.

We are working on introducing a fully automated flow for setting up a new tenant, which will require some configuration questions to be answered right at the start. Until this is available, we will collect the necessary data via questionnaires.

As soon as we have your tenant ready, you can start trying out TEOS API functionality using [Postman examples.](https://github.com/CoreLedger-TEOS/API)

While you're waiting for your tenant to be prepared, we invite you to start exploring the TEOS API with the following topics:

<table data-view="cards"><thead><tr><th></th><th></th><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><mark style="color:blue;"><strong>Authentication</strong></mark></td><td>Learn how different types of access tokens work</td><td></td><td></td><td><a href="get-started/authentication-types">authentication-types</a></td></tr><tr><td><mark style="color:blue;"><strong>Guides</strong></mark></td><td>Learn which main concepts TEOS platform operates</td><td></td><td></td><td><a href="guides">guides</a></td></tr><tr><td><mark style="color:blue;"><strong>API reference</strong></mark></td><td>Check API description and common rules how to use it</td><td></td><td></td><td><a href="reference">reference</a></td></tr><tr><td><mark style="color:blue;"><strong>TEOS API overview</strong></mark></td><td>Check how TEOS API overview as part of TEOS platform to make sure you're fully prepared to get maximum of it</td><td></td><td></td><td><a href="resources/using-the-teos-api">using-the-teos-api</a></td></tr></tbody></table>