# MeterRegistry contract address on Arc Mainnet VITE_METER_REGISTRY_ADDRESS=0x423B8701Da3a251a3A3fc2d241b71e8d05744C91 # Demo endpoint ID registered in the contract (used by /api/fact) DEMO_ENDPOINT_ID=1 # Arc Studio RPC proxy — set automatically when running inside Arc Studio # Leave unset when running outside Arc Studio; the app falls back to public RPC RPC_PROXY_BASE_URL= RPC_PROXY_TOKEN= RPC_PROXY_CHAINS=