{"message":"SII Company Data API","version":"2.1.0","endpoints":{"GET /":"API information","POST /company":"Get company data by RUT (v1 - zeus.sii.cl)","POST /companyv2":"Get company data by RUT (v2 - www2.sii.cl)","GET /health":"Health check"},"usage":{"endpoint":"POST /company or POST /companyv2","body":{"rut":"RUT in any format (765398134, 76539813-4, 76.539.813-4)"}}}