> For the complete documentation index, see [llms.txt](https://docs.loadmill.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.loadmill.com/reporting/api-catalog-and-coverage/api-catalog/openapi-upload.md).

# OpenAPI upload

Uploading OpenAPI specification file will allow the mapping of all the APIs at once and creates full visibility on the coverage of tests executions.

To upload a swagger file, follow the next steps:

1. From the dotted menu at the top-right corner of the screen, select "Import from OpenAPI"\
   ![](/files/0ag0cixhYnjdV3GGse5I)
2. Select the file and proceed with the upload

{% hint style="info" %}
Note. Loadmill will use `servers` section to map the name/domain of the service. In case the `servers` section is missing, a prompt will be displayed to let the user select how the data should be mapped.
{% endhint %}

3. In case Loadmill couldn't find the information, the user will be prompted to select the service.

<figure><img src="/files/wN8wn8U2gWirYLaBfHdC" alt=""><figcaption><p>Service selection screen, will pop up if servers information is absent in the openAPI specification</p></figcaption></figure>

{% hint style="info" %}
The service name field will allow both, selection and free text.\
If you want to introduce a new service write it down and select it from the dropdown when finished.\ <img src="/files/VGhydp6NTuzV27OPvlo2" alt="" data-size="original">
{% endhint %}

4. Click on Import\
   The result will be reflected as new/merged api endpoints, either to new or existing service.

Notes:

* Loadmill currently support OpenAPI specification v3.0, It is possible to convert older and Swagger formats to OpenAPI specification via [this swagger editor.](https://editor.swagger.io/)