Apr 8 • Support Needed 💻
n8n Cloud Google Service Account Credential Issue for Vertex AI
Hi,
I'm unable to get Google Service Account credentials working correctly for Vertex AI API calls (Gemini models) from n8n Cloud (v1.87.1 Beta).
Issue:
Saving the credential fails with the full JSON key ("Couldn't connect..." / "asymmetric key..." error).
It only saves if I paste just the private key block (-----BEGIN...END-----). File upload option is missing.
When using the credential saved this way, API calls fail with either 404 Not Found (e.g., gemini-1.0-pro-vision-latest) or 403 Forbidden/Bad Request (Project ... not allowed to use...).
Setup: My GCP project (creamusai) setup seems correct (APIs enabled, SA roles OK, Billing OK). Tested new keys.
The problem appears to be with n8n Cloud's handling of the Google Service Account credential. How can I fix this authentication issue?
Thanks,
Marko
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n8n Cloud Google Service Account Credential Issue for Vertex AI
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