# ClickHouse connection
CLICKHOUSE_URL=http://localhost:8123
CLICKHOUSE_USER=default
CLICKHOUSE_PASSWORD=
CLICKHOUSE_DATABASE=default

# Query cache TTL in milliseconds (default: 60000)
CACHE_TTL_MS=60000

# Structured logging level: debug | info | warn | error (default: info)
LOG_LEVEL=info

# HTTP transport port (only used with --http flag)
MCP_HTTP_PORT=3001

# Auth scoping (optional) — JSON mapping API keys to permission scopes
# MCP_API_KEY=your-api-key
# MCP_AUTH_SCOPES={"your-api-key":{"allowedTables":["events"],"maxRowLimit":500}}