In a non-merchant application, we use a translation tool, DeepL. They have deprecated the ability to include our API key in an auth_key query parameter. They say:
We are unclear if this is something that we can do with our MivaScript application. Any thoughts on how to do this would be very helpful.
Going forward, you will need to authorize any API request, to any endpoint, by including your API key in an HTTP header named Authorization, like this:
Authorization: DeepL-Auth-Key [yourAuthKey]
Authorization: DeepL-Auth-Key [yourAuthKey]
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