diff --git a/apps/api/src/modules/inventory/domain/inventory-item.js b/apps/api/src/modules/inventory/domain/inventory-item.js
index 09bca0f..75db5c4 100644
--- a/apps/api/src/modules/inventory/domain/inventory-item.js
+++ b/apps/api/src/modules/inventory/domain/inventory-item.js
@@ -31,6 +31,10 @@ export function transitionInventoryStatus(currentStatus, nextStatus) {
   return nextStatus;
 }
 
+export function archiveInventoryItem(status) {
+  return transitionInventoryStatus(status, INVENTORY_STATUS.ARCHIVED);
+}
+
 export function assertInventoryItemEditable(status) {
   if (status === INVENTORY_STATUS.SOLD || status === INVENTORY_STATUS.ARCHIVED) {
     throw new Error('Inventory item is locked against ordinary edits.');
diff --git a/apps/api/src/modules/inventory/repositories/inventory-item-repository.js b/apps/api/src/modules/inventory/repositories/inventory-item-repository.js
index b8a1675..79dd98a 100644
--- a/apps/api/src/modules/inventory/repositories/inventory-item-repository.js
+++ b/apps/api/src/modules/inventory/repositories/inventory-item-repository.js
@@ -1,4 +1,4 @@
-import { and, asc, count, desc, eq, inArray } from 'drizzle-orm';
+import { and, asc, count, desc, eq, exists, inArray, sql } from 'drizzle-orm';
 
 import {
   inventoryItems,
@@ -35,6 +35,28 @@ export function createInventoryItemRepository(db) {
         .then((rows) => rows.map(({ item }) => item));
     },
 
+    async archiveByIdsForSeller(inventoryItemIds, sellerId) {
+      if (inventoryItemIds.length === 0) return [];
+
+      return db
+        .update(inventoryItems)
+        .set({ status: 'ARCHIVED', updatedAt: new Date() })
+        .where(and(
+          inArray(inventoryItems.id, inventoryItemIds),
+          eq(inventoryItems.status, 'ACTIVE'),
+          exists(
+            db
+              .select({ one: sql`1` })
+              .from(products)
+              .where(and(
+                eq(products.id, inventoryItems.productId),
+                eq(products.sellerId, sellerId),
+              )),
+          ),
+        ))
+        .returning();
+    },
+
     async searchPublic({ page = 1, limit = 20 } = {}) {
       const conditions = [
         eq(inventoryItems.status, 'ACTIVE'),
diff --git a/apps/api/src/modules/inventory/routes/admin-inventory-routes.js b/apps/api/src/modules/inventory/routes/admin-inventory-routes.js
index d15cd73..38636ee 100644
--- a/apps/api/src/modules/inventory/routes/admin-inventory-routes.js
+++ b/apps/api/src/modules/inventory/routes/admin-inventory-routes.js
@@ -1,5 +1,8 @@
 import { toAdminInventoryItemDto } from '@pokemon-inventory/contracts/inventory';
-import { createInventoryItemSchema } from '@pokemon-inventory/validation/inventory';
+import {
+  bulkArchiveInventorySchema,
+  createInventoryItemSchema,
+} from '@pokemon-inventory/validation/inventory';
 
 import { createApplicationError } from '../../../shared/errors/application-error.js';
 
@@ -58,4 +61,23 @@ export async function registerAdminInventoryRoutes(app, options) {
   app.get('/inventory', async (request) => ({
     data: (await inventoryItemService.listBySellerId(request.admin.sellerId)).map(toAdminInventoryItemDto),
   }));
+
+  app.post('/bulk', async (request, reply) => {
+    await authorizeUnsafeRequest?.(
+      request.cookies[sessionCookieName],
+      request.headers['x-csrf-token'],
+    );
+    const result = bulkArchiveInventorySchema.safeParse(request.body);
+
+    if (!result.success) {
+      return validationError(reply, result);
+    }
+
+    const inventoryItems = await inventoryItemService.archiveMany({
+      inventoryItemIds: result.data.inventoryItemIds,
+      sellerId: request.admin.sellerId,
+    });
+
+    return reply.send({ data: inventoryItems.map(toAdminInventoryItemDto) });
+  });
 }
\ No newline at end of file
diff --git a/apps/api/src/modules/inventory/services/inventory-item-service.js b/apps/api/src/modules/inventory/services/inventory-item-service.js
index c46d4e8..eb75a08 100644
--- a/apps/api/src/modules/inventory/services/inventory-item-service.js
+++ b/apps/api/src/modules/inventory/services/inventory-item-service.js
@@ -1,4 +1,4 @@
-import { createInventoryItem } from '../domain/inventory-item.js';
+import { archiveInventoryItem, createInventoryItem } from '../domain/inventory-item.js';
 import { createApplicationError } from '../../../shared/errors/application-error.js';
 
 export function createInventoryItemService({
@@ -35,5 +35,17 @@ export function createInventoryItemService({
 
       return inventoryItemRepository.create(inventoryItem);
     },
+
+    async archiveMany({ inventoryItemIds, sellerId }) {
+      const items = await inventoryItemRepository.listBySellerId(sellerId);
+      const requestedItems = items.filter(({ id }) => inventoryItemIds.includes(id));
+
+      if (requestedItems.length !== inventoryItemIds.length) {
+        throw createApplicationError('INVENTORY_NOT_FOUND', 'One or more inventory items were not found.', 404);
+      }
+
+      requestedItems.forEach(({ status }) => archiveInventoryItem(status));
+      return inventoryItemRepository.archiveByIdsForSeller(inventoryItemIds, sellerId);
+    },
   };
 }
\ No newline at end of file
diff --git a/apps/api/tests/application/inventory-item-service.test.js b/apps/api/tests/application/inventory-item-service.test.js
index 5b80721..e8950d4 100644
--- a/apps/api/tests/application/inventory-item-service.test.js
+++ b/apps/api/tests/application/inventory-item-service.test.js
@@ -7,7 +7,13 @@ function createService({ product, condition }) {
   return createInventoryItemService({
     productRepository: { async findById() { return product; } },
     conditionRepository: { async findById() { return condition; } },
-    inventoryItemRepository: { async create(inventoryItem) { return inventoryItem; } },
+    inventoryItemRepository: {
+      async create(inventoryItem) { return inventoryItem; },
+      async listBySellerId() { return []; },
+      async archiveByIdsForSeller(inventoryItemIds) {
+        return inventoryItemIds.map((id) => ({ id, status: 'ARCHIVED' }));
+      },
+    },
   });
 }
 
@@ -31,6 +37,48 @@ test('creates an inventory item when its condition belongs to the product catego
   });
 });
 
+test('archives owned active inventory items in bulk', async () => {
+  const service = createInventoryItemService({
+    productRepository: { async findById() { return null; } },
+    conditionRepository: { async findById() { return null; } },
+    inventoryItemRepository: {
+      async listBySellerId() {
+        return [
+          { id: 'item-1', status: 'ACTIVE' },
+          { id: 'item-2', status: 'ACTIVE' },
+        ];
+      },
+      async archiveByIdsForSeller(ids) {
+        return ids.map((id) => ({ id, status: 'ARCHIVED' }));
+      },
+    },
+  });
+
+  assert.deepEqual(
+    await service.archiveMany({ inventoryItemIds: ['item-1', 'item-2'], sellerId: 'seller-id' }),
+    [
+      { id: 'item-1', status: 'ARCHIVED' },
+      { id: 'item-2', status: 'ARCHIVED' },
+    ],
+  );
+});
+
+test('does not archive sold inventory items', async () => {
+  const service = createInventoryItemService({
+    productRepository: { async findById() { return null; } },
+    conditionRepository: { async findById() { return null; } },
+    inventoryItemRepository: {
+      async listBySellerId() { return [{ id: 'item-1', status: 'SOLD' }]; },
+      async archiveByIdsForSeller() { throw new Error('should not update'); },
+    },
+  });
+
+  await assert.rejects(
+    () => service.archiveMany({ inventoryItemIds: ['item-1'], sellerId: 'seller-id' }),
+    /Inventory status cannot transition from SOLD to ARCHIVED/,
+  );
+});
+
 test('rejects conditions from another category', async () => {
   const service = createService({
     product: { id: 'product-id', sellerId: 'seller-id', categoryId: 'cards' },
diff --git a/apps/api/tests/http/admin-product-routes.test.js b/apps/api/tests/http/admin-product-routes.test.js
index 8cd2e5f..ffc75a0 100644
--- a/apps/api/tests/http/admin-product-routes.test.js
+++ b/apps/api/tests/http/admin-product-routes.test.js
@@ -7,6 +7,7 @@ import { createProductService } from '../../src/modules/products/services/produc
 
 function createTestApp({ authenticateAdmin, authorizeUnsafeRequest } = {}) {
   const products = [];
+  const inventoryItems = [];
   const productRepository = {
     async create(product) {
       const createdProduct = {
@@ -49,13 +50,24 @@ function createTestApp({ authenticateAdmin, authorizeUnsafeRequest } = {}) {
       },
       inventoryItemRepository: {
         async create(inventoryItem) {
-          return {
-            id: 'inventory-1',
+          const createdItem = {
+            id: '8a0a836a-a597-454d-8c5e-e146d27dbbf2',
             ...inventoryItem,
             status: 'ACTIVE',
             createdAt: new Date('2026-09-07T00:00:00.000Z'),
             updatedAt: new Date('2026-09-07T00:00:00.000Z'),
           };
+          inventoryItems.push(createdItem);
+          return createdItem;
+        },
+        async listBySellerId() {
+          return inventoryItems;
+        },
+        async archiveByIdsForSeller(ids) {
+          return inventoryItems.filter(({ id }) => ids.includes(id)).map((item) => {
+            item.status = 'ARCHIVED';
+            return item;
+          });
         },
       },
     }),
@@ -146,6 +158,41 @@ test('creates inventory only for the authenticated sellers product', async (test
   assert.equal(response.json().data.status, 'ACTIVE');
 });
 
+test('archives selected inventory through the authenticated bulk route', async (testContext) => {
+  const app = createTestApp({
+    authenticateAdmin: async () => ({ sellerId: 'b078adf4-6a91-4b3d-a263-740246c11e3f' }),
+  });
+  testContext.after(() => app.close());
+
+  const productResponse = await app.inject({
+    method: 'POST',
+    url: '/api/v1/admin/products',
+    payload: {
+      name: 'Pikachu Plush',
+      categoryId: 'ab8150c7-96c1-4b55-8d69-7d0b77d48958',
+    },
+  });
+  await app.inject({
+    method: 'POST',
+    url: '/api/v1/admin/inventory',
+    payload: {
+      productId: productResponse.json().data.id,
+      conditionId: '21eb218b-7a95-4f80-a9e3-e306f7ca1f2e',
+    },
+  });
+  const response = await app.inject({
+    method: 'POST',
+    url: '/api/v1/admin/bulk',
+    payload: {
+      action: 'ARCHIVE',
+      inventoryItemIds: ['8a0a836a-a597-454d-8c5e-e146d27dbbf2'],
+    },
+  });
+
+  assert.equal(response.statusCode, 200);
+  assert.equal(response.json().data[0].status, 'ARCHIVED');
+});
+
 test('rejects an authenticated product write without a CSRF token', async (testContext) => {
   const app = createTestApp({
     authenticateAdmin: async () => ({ sellerId: 'b078adf4-6a91-4b3d-a263-740246c11e3f' }),
diff --git a/docs/IMPLEMENTATION-STATUS.md b/docs/IMPLEMENTATION-STATUS.md
index f8834d5..2bccd65 100644
--- a/docs/IMPLEMENTATION-STATUS.md
+++ b/docs/IMPLEMENTATION-STATUS.md
@@ -108,6 +108,7 @@ docker context use orbstack
 - The worker owns an image derivative job runner with explicit processing, completion, and failure outcomes; queue transport and persistent job records remain.
 - Image metadata limits are enforced in the service boundary: supported MIME types, 10 MiB default file size, and 10,000-pixel maximum dimensions.
 - Acquisition, sales, dashboard, pricing observations, market valuations, audited sale voiding, and manual market-value overrides are implemented with seller-scoped API and admin UI workflows.
+- Seller-scoped bulk archive is implemented through the CSRF-protected `POST /api/v1/admin/bulk` route; it validates active inventory lifecycle transitions and never substitutes for the dedicated sale workflow.
 
 ### Verified Baseline
 
@@ -135,7 +136,7 @@ Work through one bounded vertical slice at a time. The linked documentation rema
 
 Completed vertical slices include authentication, listings and image prerequisites, acquisitions, sales and audited corrections, dashboard metrics/alerts, pricing observations and quality handling, provider mappings, durable pricing refresh jobs, public search/detail/image states, admin workflows, CI integration/E2E gates, production Docker packaging, rollback/health checks, PostgreSQL backup verification, restore drill scripts, image-storage restore support, and deployment smoke checks.
 
-Remaining roadmap areas are richer exports/settings, approved external provider credentials/adapters, broader accessibility/manual coverage, and deployment-specific NAS/TLS validation.
+Remaining roadmap areas are bulk status/tag/pricing actions, richer exports/settings, approved external provider credentials/adapters, broader accessibility/manual coverage, and deployment-specific NAS/TLS validation.
 
 ## Known Gaps
 
@@ -147,6 +148,7 @@ Remaining roadmap areas are richer exports/settings, approved external provider
 - Pricing refresh enqueue now resolves its provider from an active Product mapping and rejects unmapped Products explicitly.
 - Local development and CI can enable a deterministic fixture provider for end-to-end refresh coverage; production provider adapters remain explicitly configured deployment boundaries.
 - Pricing refresh jobs have a bounded three-attempt retry policy with exponential backoff. The worker schedules completed-job cleanup using configurable retention days and cleanup interval settings.
+- Bulk archive is implemented through the seller-scoped API boundary; bulk status changes, tags, and bulk pricing refresh remain.
 - PostgreSQL restore verification and image snapshot restore scripts are implemented and covered by shell tests as part of the deployment drill workflow.
 - `npm audit --omit=dev` currently reports zero production vulnerabilities. Re-run the audit after dependency changes and review development-dependency findings separately before production releases.
 
diff --git a/packages/validation/inventory.js b/packages/validation/inventory.js
index dddee49..8de716e 100644
--- a/packages/validation/inventory.js
+++ b/packages/validation/inventory.js
@@ -6,4 +6,11 @@ export const createInventoryItemSchema = z
     conditionId: z.uuid(),
     notes: z.string().trim().max(10000).optional(),
   })
+  .strict();
+
+export const bulkArchiveInventorySchema = z
+  .object({
+    action: z.literal('ARCHIVE'),
+    inventoryItemIds: z.array(z.uuid()).min(1).max(100),
+  })
   .strict();
\ No newline at end of file