Wrong project in Google SDK - api

Question

I want to build a TTS application and I am using the Google TTS engine. However, when trying the examples such as
curl -H "Authorization: Bearer "$(gcloud auth print-access-token) -H "Content-Type: application/json; charset=utf-8" --data "{
'input':{
'text':'I\'ve added the event to your calendar.'
},
'voice':{
'languageCode':'en-gb',
'name':'en-GB-Standard-A',
'ssmlGender':'FEMALE'
},
'audioConfig':{
'audioEncoding':'MP3'
}
}" "https://texttospeech.googleapis.com/v1/text:synthesize"
I get Error code 403 telling me that Cloud Text-to-Speech API has not been used in project 32555940559 before or it is disabled. Now the problem is that it mentions the project number 32555... but I want to use another project which has the TTS API switched on. Now you might suggest that I switch to the correct project, but I have done that -- when I type gcloud config list, it tells me that I am using the correct project (with project number different from the 32555...).
Where is the problem? Why is it trying to use a different project from the one that I am currently using?

Answer 1

You need to use "gcloud auth app-default print-access-token" (and use a dedicated service account as specified in the docs).
32555940559 is a CLOUDSDK_CLIENT_ID that comes with gcloud. And app-default has its own client_id as well. It's still now clear how Google API distinguishes between the two, unless it checks for hard-coded app-default client ID (from gcloud SDK).
It's also not clear how gcloud command line still manages to use speech API without a dedicated service account.

Answer 2

On a related note, since I had this same issue (API has not been used in project before or it is disabled "32555940559") in a Python virtual environment using gcloud SDKs (not curl).
Solved by running:
gcloud auth application-default login
(using gcloud auth login did not solve it).
For gcloud, the root cause might also be related to missing:
GOOGLE_CLOUD_PROJECT or GOOGLE_APPLICATION_CREDENTIALS environment variables.