# Network selection: "stellar:testnet" (default) or "stellar:public"
# Set to stellar:public for mainnet deployments
NETWORK=stellar:testnet

# Stellar public key to receive payments (starts with G...)
# Must match the network selected above
PAY_TO=

# Stellar secret key for the server — used to send refunds (starts with S...)
# Must match the network selected above; needs USDC trustline + small balance
SERVER_SECRET=

# Client's Stellar secret key — for demo-client.js only (starts with S...)
# Must match the network selected above
DEMO_PRIVATE_KEY=

# Optional: override x402 facilitator URL (default: https://www.x402.org/facilitator)
# FACILITATOR_URL=