Hi,
Our backend exposes an OData API for accessing its resources.
As far as I can see from your query it’s probably just missing the url encoded quotes and has an extra \ before the $filter.
Here is the curl that I would suggest you for this use case:
curl 'https://api.balena-cloud.com/v5/device_environment_variable?$filter=device/any(d:d/uuid%20eq%20%27your_uuid%27)' \
-H 'authorization: Bearer ****'
In case that you are doing this requests on an environment that node or python is available, I would suggest you to give a try to our respective SDKs.
Let me point you to those:
Let us know if you need any further assistance.
Kind regards,
Thodoris