# Getting started

> An end-to-end path from zero to the first sale through the BILLZ API.

Four steps, each taking a few minutes. The result is a real sale made through the API that is visible in the BILLZ interface.

| Step                                             | Contents                                               | Time  |
| ------------------------------------------------ | ------------------------------------------------------ | ----- |
| [1. Integration key](/en/start/integration-key/) | creating a secret key in the company settings          | 2 min |
| [2. First request](/en/start/first-request/)     | exchanging the key for a token and reading the catalog | 3 min |
| [3. First sale](/en/start/first-sale/)           | creating a draft, adding a product, payment            | 5 min |
| [4. Verification](/en/start/verify/)             | finding the result in the BILLZ interface              | 2 min |

## What is needed

* A BILLZ account with company administrator permissions.
* `curl` or any HTTP client; the examples use curl.
* Base URL: `https://api-admin.billz.ai`