.env.example

INDEXER_URL=https://analytics.indigoprotocol.io/api/v1

# Required for write operations (transaction building). Get a free key at https://blockfrost.io/
BLOCKFROST_API_KEY=

# ── x402 payment gating (optional — omit or leave blank to disable) ──────────
#
# Payment uses the split execution flow: signing happens locally, verification
# and settlement route through the openmm.io proxy (or your own PAYMENT_SERVER).
# Private keys never leave this process.
#
# To enable: set X402_PRIVATE_KEY to your EVM wallet private key.
# The wallet pays for tool calls; funds must be available in USDC on Base.

# EVM private key of the payer wallet (0x-prefixed). Enables auto-payment.
X402_PRIVATE_KEY=

# Proxy / settlement worker URL. Override for self-hosted deployments.
PAYMENT_SERVER=https://mcp.openmm.io

# Set to "true" to use Base Sepolia testnet
X402_TESTNET=false

# Legacy: direct facilitator URL fallback (used only when PAYMENT_SERVER is unset
# and you want to bypass mcp.openmm.io). Defaults to https://mcp.openmm.io.
X402_FACILITATOR_URL=