> For the complete documentation index, see [llms.txt](https://docs.archisketch.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.archisketch.com/guide/dev-en/api-sdk/api-integration/api-token.md).

# Obtaining an API Authentication Token

Every Archisketch OPEN-API request requires OPEN-API-KEY authentication. After signing a contract with Archisketch, please issue an OPEN-API-KEY and use it in the API authentication header as shown below. Add it to the `X-API-KEY` header in the `{Issued OPEN-API-KEY}` format.

```http
curl --request GET 'https://api.archisketch.com/open-api/api/v1/' \
--header 'X-API-KEY: {Your_Issued_OPEN-API-KEY}'
```

### Issuing an OPEN-API-KEY

{% stepper %}
{% step %}
**Accessing the Archisketch Enterprise Service**

Log in to the Archisketch Enterprise Service after signing a contract with Archisketch. Go to **Settings > Enterprise Settings > Developer Settings**, and then click the **'Issue Token'** button.

<figure><img src="/files/o11wGkdjQNZHOvxVp47E" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}
**Verifying the OPEN-API-KEY**

For security reasons, the issued OpenAPI-Key is displayed on the screen with masking applied. You can reveal the actual key value by hovering your mouse over the masked area, and you can copy it instantly to your clipboard by clicking on it.

<figure><img src="/files/hP3NB5K1wmBm1UGQHFVC" alt=""><figcaption></figcaption></figure>
{% endstep %}
{% endstepper %}