{"name":"US Sales Tax Lookup API","version":"2.0.0","note":"There is no US federal sales tax; federal_rate is always 0.","usage":"GET /tax?address=410 Terry Ave N, Seattle, WA 98109","endpoints":["/tax","/states","/cache","/cache/refresh","/admin","/settings/global","/settings/states/{state}","/health","/docs"]}