[{"slug":"ZV-2026-0221","server_name":"petstore.run.mcp.com.ai","severity":"breaking","title":"petstore.run.mcp.com.ai: Prompt system was removed.","summary":"[breaking] Prompt system was removed.","changes":[{"kind":"prompt_removed","tool":"system","before":"system","detail":"Prompt `system` was removed.","severity":"breaking"}],"published_at":"2026-08-20T09:05:40.342Z"}]