[{"slug":"ZV-2026-1932","server_name":"gth-mcp-server.pages.dev","severity":"breaking","title":"gth-mcp-server.pages.dev: Field _unused was removed from get_treatment_types input; consumers still sending it may be rejected or silently ignored.","summary":"[risky] Description of get_facility_detail changed (76% word delta). [risky] Description of get_treatment_types changed (64% word delta). [breaking] Field _unused was removed from get_treatment_types input; consumers still sending it may be rejected or silently ignored. [risky] Description of list_states changed (74% word delta). [breaking] Field _unused was removed from list_states input; consumers still sending it may be rejected or silently ignored. [risky] Description of search_facilities changed (73% word delta). [breaking] Field state on search_facilities is now required. [breaking] Prompt find_treatment was removed.","changes":[{"kind":"description_changed","tool":"get_facility_detail","after":"Get the full profile of one specific treatment facility: address, phone, programs offered, insurance plans accepted, SAMHSA verification status, and a direct browse URL. Supports partial name matching — returns the best match if multiple facilities contain the query string. Use after search_facilities when the user wants to drill into a named facility.","before":"Get detailed information about a specific treatment facility by name. Returns programs offered, insurance accepted, phone number, website, and a description.","detail":"Description of `get_facility_detail` changed (76% word delta).","severity":"risky","descriptionDelta":0.7592592592592593},{"kind":"description_changed","tool":"get_treatment_types","after":"Get definitions of all treatment program types (Inpatient Rehab, Detox, PHP, IOP, Outpatient, MAT, Counseling, Sober Living) with duration, intensity, and typical fit. Returns markdown-formatted explanations. Use when the user is uncertain which treatment_type to pass to search_facilities, or asks 'what's the difference between X and Y'.","before":"Get definitions and explanations of all treatment program types (Inpatient, Detox, IOP, PHP, Outpatient, MAT, Counseling, Sober Living) to help users understand their options and choose the right level of care.","detail":"Description of `get_treatment_types` changed (64% word delta).","severity":"risky","descriptionDelta":0.6363636363636364},{"kind":"input_property_removed","path":"inputSchema.properties._unused","tool":"get_treatment_types","before":{"type":"string","description":"This tool takes no parameters. Call with an empty arguments object."},"detail":"Field `_unused` was removed from `get_treatment_types` input; consumers still sending it may be rejected or silently ignored.","severity":"breaking"},{"kind":"description_changed","tool":"list_states","after":"List every US state that has treatment facility data in this directory, with per-state facility counts. Returns an array of {state, stateAbbr, count}. Use as a first step when the user's location is unclear, or to discover where coverage exists before calling search_facilities.","before":"List all US states that have treatment facility data available, along with the count of facilities in each state. Useful for understanding geographic coverage before searching.","detail":"Description of `list_states` changed (74% word delta).","severity":"risky","descriptionDelta":0.7407407407407407},{"kind":"input_property_removed","path":"inputSchema.properties._unused","tool":"list_states","before":{"type":"string","description":"This tool takes no parameters. Call with an empty arguments object."},"detail":"Field `_unused` was removed from `list_states` input; consumers still sending it may be rejected or silently ignored.","severity":"breaking"},{"kind":"description_changed","tool":"search_facilities","after":"Search the 12,338 curated, SAMHSA-sourced US addiction treatment facility directory by state, city, treatment type, and insurance. Returns matched facilities with name, city/state, programs offered, insurance accepted, phone, and browse URL. Use this to find candidates — then call get_facility_detail for one facility's full profile. If the user is uncertain about location coverage, call list_states first.","before":"Search for addiction treatment and mental health facilities. Filter by US state, city, treatment type, and insurance. Returns facility names, locations, programs, insurance, phone numbers, and direct links.","detail":"Description of `search_facilities` changed (73% word delta).","severity":"risky","descriptionDelta":0.728813559322034},{"kind":"input_required_added","path":"inputSchema.required.state","tool":"search_facilities","detail":"Field `state` on `search_facilities` is now required.","severity":"breaking"},{"kind":"prompt_removed","tool":"find_treatment","before":"find_treatment","detail":"Prompt `find_treatment` was removed.","severity":"breaking"}],"published_at":"2026-10-07T20:44:12.209Z"}]