You can see your current bandwidth usage with the following curl request:
curl -H "X-Lum-Auth: brd-customer-YOUR_CUSTOMER_ID-zone-YOUR_ZONE-key-PASSWORD" "https://api.brightdata.com/bw"
Full request example:
curl -H "X-Lum-Auth: brd-customer-CXXXXX-zone-ZONE_X-key-123456" "https://api.brightdata.com/bw"