all models
description
Authentication to Claude on Vertex AI uses standard Google Cloud IAM (service account credentials, Application Default Credentials, or short-lived OAuth2 access tokens obtained via gcloud/ADC), not a portable ANTHROPIC_API_KEY -- the same shape of difference as Bedrock's AWS SigV4/IAM auth relative to the direct API, but using Google's credential system instead of AWS's.
provenance
created 2026-07-02 08:29:30 · JSON