[{"slug":"ZV-2026-1232","server_name":"gutenberg.caseyjhand.com","severity":"breaking","title":"gutenberg.caseyjhand.com: Type of summary on gutenberg_get_book changed unset → string|null.","summary":"[breaking] Type of summary on gutenberg_get_book changed unset → string|null. [breaking] Type of copyright on gutenberg_get_book changed unset → boolean|null.","changes":[{"kind":"output_type_changed","path":"outputSchema.properties.summary","tool":"gutenberg_get_book","after":"string|null","before":"unset","detail":"Type of `summary` on `gutenberg_get_book` changed unset → string|null.","severity":"breaking"},{"kind":"output_type_changed","path":"outputSchema.properties.copyright","tool":"gutenberg_get_book","after":"boolean|null","before":"unset","detail":"Type of `copyright` on `gutenberg_get_book` changed unset → boolean|null.","severity":"breaking"}],"published_at":"2026-09-20T15:19:12.605Z"}]