Google Vertex AI

Installation

Vertex AI requires the Google Cloud dependency. Install Strix with the vertex extra:

pipx install "strix-agent[vertex]"

export STRIX_LLM="vertex_ai/gemini-3-pro-preview"

No API key required—uses Google Cloud Application Default Credentials.

gcloud auth application-default login

export GOOGLE_APPLICATION_CREDENTIALS="/path/to/service-account.json"

Model	Description
`vertex_ai/gemini-3-pro-preview`	Best overall performance for security testing
`vertex_ai/gemini-3-flash-preview`	Faster and cheaper

export VERTEXAI_PROJECT="your-project-id"
export VERTEXAI_LOCATION="global"