GET /v1/anime supports year, season, format, status, genre and studio. Genre/studio values are canonical slugs, combined with AND. Discover IDs/slugs through /v1/genres and /v1/studios; both lists support limit and after. Detail routes use canonical UUIDs.
GET /v1/seasons/current selects the UTC calendar quarter and accepts format, limit and after. This is not an episode premiere calendar.
Unknown or repeated parameters return 400. Field selection and includes are not supported.