SETTINGS

Configuration

Everything is env-driven. Secrets come only from the environment — never hardcoded, never committed. Copy .env.example to .env.

Model

gemini-3.6-flash → 3.1-pro-preview → 2.5-pro

Vector store

LanceDB (local, no cloud)

Trigger

CLI + GitHub Action (pull_request)

Secrets

.env + Actions secrets

ENVIRONMENT VARIABLES

GEMINI_API_KEY—Gemini API auth. Required. Never committed.

MODEL_NAMEgemini-3.6-flashPrimary review model.

MODEL_FALLBACKSgemini-3.1-pro-preview,gemini-2.5-proAuto-fallback chain on model-unavailable.

EMBED_MODELgemini-embedding-001Embeddings for vector retrieval + rerank.

GITHUB_TOKEN—PAT with org read (sibling private repos).

VECTOR_DB_PATH.crossreview-cache/vectorsLocal LanceDB store. No cloud.

CROSSREVIEW_CONTEXT_REPOS(auto-discover)Explicit sibling repos, comma-separated.

CROSSREVIEW_MAX_CONTEXT_CHARS120000Context budget guard.

LOG_LEVELinfodebug | info | warn | error.