Guide · Updated 2026-05-31
Environment & API keys
Minimum `.env` for a working agent — plus pointers to the full docs.
Required
AGENT_API_KEY — provider secret (OpenRouter, OpenAI, etc.).
AGENT_API_BASE_URL — default https://openrouter.ai/api/v1
AGENT_MODEL — main model slug for the ReAct loop.
Optional but useful
AGENT_FAST_MODEL — smaller model for routing and background tasks.
AGENT_WORKSPACE_ROOT — project root for tools.
Full list: https://docs.vireondynamics.com/liminal/