How-To Series · 8: Provider Plumbing
Google Vertex A I Setup
Gemini models on G C P with enterprise rate limits. OAuth 2 tokens, auto-refreshed. No static key.
After this videoYou can wire Hermes to Google Vertex AI and let it handle OAuth 2 token refresh automatically.
Hermes Agent supports Gemini models on Google Cloud Vertex AI through an OpenAI-compatible endpoint. Unlike the A I Studio provider, Vertex uses OAuth 2 short-lived tokens, not a static API key, and draws on G C P billing. This guide covers the two credential paths (service account J S O N or Application Default Credentials), the hermes model picker, where each setting lives, and the troubleshooting fixes for common errors.
About these resources. This episode explains how to set up Hermes with Google Vertex AI. The Sources block names the Hermes docs page that backs every claim. For the A I Studio alternative, see the related guide.
New words here · Plain English
one sentence each · full glossaryVertex AIGoogle Cloud platform for running AI models with enterprise-level rate limits and OAuth security.
OAuthA secure login flow where one app gets permission to use another without seeing your password.
Sources · What this video distills
3 docs pages · every command below traces to one of themCommands shown · Copy and paste
each shows the source doc it came fromecho "VERTEX_CREDENTIALS_PATH=/path/key.json" >> ~/.hermes/.envgcloud auth application-default loginhermes modelhermes doctor