{"service":"HTS Classification API with API Key Management","version":"2.1.0","status":"operational","features":["API Key Authentication","Rate Limiting per API Key","Comprehensive HTS Classification","Legal Rationale Analysis"],"documentation":{"openapi":"/docs","redoc":"/redoc"},"authentication":{"header":"x-api-key","optional":"Public access available with rate limits","enhanced":"API key provides higher rate limits and usage tracking"}}