[{"slug":"ZV-2026-0407","server_name":"lulu.flightpowers.com","severity":"breaking","title":"lulu.flightpowers.com: Type of use_fallback on search_oneway_flights changed boolean → unset.","summary":"[safe] Description of search_hotels changed (5% word delta). [breaking] Type of use_fallback on search_oneway_flights changed boolean → unset. [risky] Default of use_fallback on search_oneway_flights changed false → null. [breaking] Type of use_fallback on search_roundtrip_flights changed boolean → unset. [risky] Default of use_fallback on search_roundtrip_flights changed false → null.","changes":[{"kind":"description_changed","tool":"search_hotels","after":"Search live hotel availability and nightly prices for a destination and date range. Input: a free-text destination the way a person would say it (\"Rome\", \"Tokyo Shibuya\"), plus check-in and check-out dates.\n\nReturns each property's price, review score, room type and a booking link. Rates go stale within minutes -- never reuse an earlier result, search again.\n\nFREE TIER: this is the ad-supported server. For rate-parity pricing by country, the 24 Booking.com filters, no ads and no shared daily budget, use the paid server at https://hotels.flightpowers.com/mcp","before":"Search live hotel availability and nightly prices for a destination and date range. Input: a free-text destination the way a person would say it (\"Rome\", \"Tokyo Shibuya\"), plus check-in and check-out dates.\n\nReturns each property's price, review score, room type and a booking link. Rates go stale within minutes -- never reuse an earlier result, search again.\n\nFREE TIER: this is the ad-supported server. For rate-parity pricing by country, the 24 Booking.com filters, no ads and no caps, use the paid server at https://hotels.flightpowers.com/mcp","detail":"Description of `search_hotels` changed (5% word delta).","severity":"safe","descriptionDelta":0.05128205128205132},{"kind":"input_type_changed","path":"inputSchema.properties.use_fallback","tool":"search_oneway_flights","after":"unset","before":"boolean","detail":"Type of `use_fallback` on `search_oneway_flights` changed boolean → unset.","severity":"breaking"},{"kind":"default_changed","path":"inputSchema.properties.use_fallback","tool":"search_oneway_flights","after":null,"before":false,"detail":"Default of `use_fallback` on `search_oneway_flights` changed false → null.","severity":"risky"},{"kind":"input_type_changed","path":"inputSchema.properties.use_fallback","tool":"search_roundtrip_flights","after":"unset","before":"boolean","detail":"Type of `use_fallback` on `search_roundtrip_flights` changed boolean → unset.","severity":"breaking"},{"kind":"default_changed","path":"inputSchema.properties.use_fallback","tool":"search_roundtrip_flights","after":null,"before":false,"detail":"Default of `use_fallback` on `search_roundtrip_flights` changed false → null.","severity":"risky"}],"published_at":"2026-08-26T06:55:10.172Z"}]