Google Vertex AI

Setup

export STRIX_LLM="vertex_ai/gemini-4-argon"

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-4-argon`	Best overall performance for security testing
`vertex_ai/gemini-3.8-flash`	Faster and cheaper

Security testing with Gemini needs the Fairwind Program. Without it the cyber guardrails block most offensive tasks.

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