{"message":"Welcome to Coupon API","endpoints":{"GET /coupon":{"description":"Get coupon code by country and project","parameters":{"purview":"Required. Project identifier: 'manga_translator' or 'sora_watermark'"},"note":"Country is automatically detected from CF-IPCountry header","example":"/coupon?purview=manga_translator"}},"timestamp":"2026-04-09T03:57:48.703Z"}