diff --git a/web-v2/src/lib/inventoryStructureApi.ts b/web-v2/src/lib/inventoryStructureApi.ts
new file mode 100644
index 0000000..36ffcd2
--- /dev/null
+++ b/web-v2/src/lib/inventoryStructureApi.ts
@@ -0,0 +1,121 @@
+import { apiRequest } from './api';
+
+export type InventoryStructureKind = 'AREA' | 'YACIMIENTO' | 'INSTALACION' | 'SUBINSTALACION';
+
+export interface InventoryFamily {
+  id: string;
+  code: string;
+  name: string;
+  level: 'INSTALLATION' | 'SUBINSTALLATION';
+  legacyTypeCode: string | null;
+  informationLabels: string[];
+  parentFamilyId: string | null;
+  parentFamilyCode: string | null;
+  parentFamilyName: string | null;
+}
+
+export interface InventoryStructureLevel {
+  kind: InventoryStructureKind;
+  label: string;
+  type: { id: string; code: string; name: string };
+  parentKind: InventoryStructureKind | null;
+  requiresFamily: boolean;
+}
+
+export interface InventoryStructureOptions {
+  levels: InventoryStructureLevel[];
+  installationFamilies: InventoryFamily[];
+  subinstallationFamilies: InventoryFamily[];
+}
+
+export interface InventoryStructureParent {
+  id: string;
+  code: string;
+  name: string;
+  commonName: string | null;
+  type: { id: string; code: string; name: string };
+  inventoryFamily: null | {
+    id: string;
+    code: string;
+    name: string;
+    level: 'INSTALLATION' | 'SUBINSTALLATION';
+    informationLabels: string[];
+  };
+  parent: null | { id: string; code: string; name: string };
+}
+
+export interface InventoryFamilyFinding {
+  id: string;
+  code: string;
+  sourceNumber: number;
+  title: string;
+  legalBasis: string | null;
+  glossary: string | null;
+  suggestedSeverity: number | null;
+  categoryId: string;
+  categoryCode: string;
+  categoryName: string;
+}
+
+export interface InventoryFamilyFindings {
+  family: {
+    id: string;
+    code: string;
+    name: string;
+    level: string;
+    informationLabels: string[];
+  };
+  items: InventoryFamilyFinding[];
+  count: number;
+}
+
+export interface CreatedInventoryStructure {
+  id: string;
+  code: string;
+  name: string;
+  commonName: string | null;
+  description: string | null;
+  informationStatus: string;
+  operationalStatus: string;
+  type: { id: string; code: string; name: string };
+  parent: null | { id: string; code: string; name: string };
+  inventoryFamily: null | {
+    id: string;
+    code: string;
+    name: string;
+    level: string;
+    informationLabels: string[];
+  };
+}
+
+export function getInventoryStructureOptions() {
+  return apiRequest<InventoryStructureOptions>('/inventory-structure');
+}
+
+export async function listInventoryStructureParents(kind: InventoryStructureKind, search = '') {
+  const query = new URLSearchParams();
+  if (search.trim()) query.set('search', search.trim());
+  const suffix = query.size ? `?${query}` : '';
+  return (await apiRequest<{ data: InventoryStructureParent[] }>(
+    `/inventory-structure/parents/${kind}${suffix}`,
+  )).data;
+}
+
+export function getInventoryFamilyFindings(familyId: string) {
+  return apiRequest<InventoryFamilyFindings>(`/inventory-families/${familyId}/findings`);
+}
+
+export function createInventoryStructure(input: {
+  kind: InventoryStructureKind;
+  code?: string | null;
+  name: string;
+  commonName?: string | null;
+  parentId?: string | null;
+  familyId?: string | null;
+  description?: string | null;
+}) {
+  return apiRequest<CreatedInventoryStructure>('/inventory-structure', {
+    method: 'POST',
+    body: JSON.stringify(input),
+  });
+}