# K+DUCK > K+DUCK turns Korean drama scenes into vertical short-form Korean language lessons. K+DUCK is a public web app for learning Korean through short Korean drama scenes. The app surface is a browser SPA, and public content is available through canonical scene URLs and read-only JSON APIs. ## Primary URLs - Home: https://jinjjak.com/ - Room designer: https://jinjjak.com/room - Sitemap: https://jinjjak.com/sitemap.xml - API catalog: https://jinjjak.com/.well-known/api-catalog - OpenAPI description: https://jinjjak.com/openapi.json - Agent skill index: https://jinjjak.com/.well-known/agent-skills/index.json - Authentication notes: https://jinjjak.com/auth.md - Security contact: https://jinjjak.com/.well-known/security.txt ## Public APIs - GET https://jinjjak.com/api/content/manifest - Lists published learning scenes and curriculum defaults. - GET https://jinjjak.com/api/content/scenes/{id} - Returns one published learning scene by id or slug. ## Content Policy - Public pages may be indexed for search and used as agent input. - Public content is not licensed for AI model training by default. - Account, profile, push, and admin APIs are not public discovery targets.