DeepL API_KEY in query param not supported anymore starts on 1 November 2025

[adrianstas]

Official information was published on DeepL website about the discontinuation of supporting sending API_KEY in the query string

Don't know how i18n-ally plugin sends the request, and maybe will require some adjustments.

The link:
https://developers.deepl.com/docs/resources/breaking-changes-change-notices/november-2025-deprecation-of-legacy-auth-methods

Best regards

[adrianstas]

I looked into the code, and unfortunately, the auth_key is sent over the query params.

https://github.com/lokalise/i18n-ally/blob/main/src/translators/engines/deepl.ts#L30