diff --git a/src/platform/assets/services/assetService.test.ts b/src/platform/assets/services/assetService.test.ts
index 2a8c525b077..e718cb3d727 100644
--- a/src/platform/assets/services/assetService.test.ts
+++ b/src/platform/assets/services/assetService.test.ts
@@ -1,6 +1,13 @@
 import { beforeEach, describe, expect, it, vi } from 'vitest'
 
-import { assetService } from '@/platform/assets/services/assetService'
+import type { AssetItem } from '@/platform/assets/schemas/assetSchema'
+import {
+  MISSING_TAG,
+  assetService,
+  isBlake3AssetHash,
+  toBlake3AssetHash
+} from '@/platform/assets/services/assetService'
+import { api } from '@/scripts/api'
 
 const mockDistributionState = vi.hoisted(() => ({ isCloud: false }))
 const mockSettingStoreGet = vi.hoisted(() => vi.fn(() => false))
@@ -40,6 +47,32 @@ vi.mock('@/i18n', () => ({
   st: vi.fn((_key: string, fallback: string) => fallback)
 }))
 
+const fetchApiMock = vi.mocked(api.fetchApi)
+
+const validBlake3Hash =
+  '1111111111111111111111111111111111111111111111111111111111111111'
+const validBlake3AssetHash = `blake3:${validBlake3Hash}`
+
+function buildResponse(
+  body: unknown,
+  init: { ok?: boolean; status?: number } = {}
+): Response {
+  return {
+    ok: init.ok ?? true,
+    status: init.status ?? 200,
+    json: vi.fn().mockResolvedValue(body)
+  } as unknown as Response
+}
+
+function validAsset(overrides: Partial<AssetItem> = {}): AssetItem {
+  return {
+    id: 'asset-1',
+    name: 'model.safetensors',
+    tags: ['models'],
+    ...overrides
+  }
+}
+
 describe(assetService.shouldUseAssetBrowser, () => {
   beforeEach(() => {
     vi.clearAllMocks()
@@ -104,3 +137,763 @@ describe(assetService.shouldUseAssetBrowser, () => {
     ).toBe(false)
   })
 })
+
+describe(assetService.getAssetMetadata, () => {
+  beforeEach(() => {
+    vi.clearAllMocks()
+  })
+
+  it('throws a localized message when the response is not ok', async () => {
+    fetchApiMock.mockResolvedValueOnce(
+      buildResponse({ code: 'FILE_TOO_LARGE' }, { ok: false, status: 413 })
+    )
+
+    await expect(
+      assetService.getAssetMetadata('https://example.com/model.safetensors')
+    ).rejects.toThrow('File too large')
+  })
+
+  it('throws a localized message when validation reports is_valid=false', async () => {
+    fetchApiMock.mockResolvedValueOnce(
+      buildResponse({
+        content_length: 100,
+        final_url: 'https://example.com/model.safetensors',
+        validation: {
+          is_valid: false,
+          errors: [{ code: 'UNSAFE_VIRUS_SCAN', message: 'bad', field: 'file' }]
+        }
+      })
+    )
+
+    await expect(
+      assetService.getAssetMetadata('https://example.com/model.safetensors')
+    ).rejects.toThrow('Unsafe virus scan')
+  })
+
+  it('encodes the URL in the query string', async () => {
+    fetchApiMock.mockResolvedValueOnce(
+      buildResponse({
+        content_length: 1,
+        final_url: 'https://example.com/x'
+      })
+    )
+
+    await assetService.getAssetMetadata('https://example.com/foo bar?x=1')
+
+    expect(fetchApiMock).toHaveBeenCalledWith(
+      expect.stringContaining(
+        '/assets/remote-metadata?url=' +
+          encodeURIComponent('https://example.com/foo bar?x=1')
+      )
+    )
+  })
+})
+
+describe(isBlake3AssetHash, () => {
+  it('accepts only prefixed 64-character blake3 hashes', () => {
+    expect(isBlake3AssetHash(validBlake3AssetHash)).toBe(true)
+    expect(isBlake3AssetHash('BLAKE3:' + validBlake3Hash.toUpperCase())).toBe(
+      true
+    )
+    expect(isBlake3AssetHash('blake3:abc')).toBe(false)
+    expect(isBlake3AssetHash(validBlake3Hash)).toBe(false)
+  })
+})
+
+describe(toBlake3AssetHash, () => {
+  it('normalizes 64-character blake3 hex values to asset hashes', () => {
+    expect(toBlake3AssetHash(validBlake3Hash)).toBe(validBlake3AssetHash)
+    expect(toBlake3AssetHash('abc')).toBeNull()
+    expect(toBlake3AssetHash(undefined)).toBeNull()
+  })
+})
+
+describe(assetService.uploadAssetFromUrl, () => {
+  beforeEach(() => {
+    vi.clearAllMocks()
+    assetService.invalidateInputAssetsIncludingPublic()
+  })
+
+  it('does not invalidate cached input assets when the upload response is invalid', async () => {
+    const staleAssets = [validAsset({ id: 'stale-input', tags: ['input'] })]
+    const consoleSpy = vi.spyOn(console, 'error').mockImplementation(() => {})
+    fetchApiMock
+      .mockResolvedValueOnce(buildResponse({ assets: staleAssets }))
+      .mockResolvedValueOnce(buildResponse({ id: 'missing-name' }))
+
+    await assetService.getInputAssetsIncludingPublic()
+    await expect(
+      assetService.uploadAssetFromUrl({
+        url: 'https://example.com/input.png',
+        name: 'input.png',
+        tags: ['input']
+      })
+    ).rejects.toThrow('Failed to upload asset')
+    const cached = await assetService.getInputAssetsIncludingPublic()
+
+    expect(cached).toEqual(staleAssets)
+    expect(fetchApiMock).toHaveBeenCalledTimes(2)
+    consoleSpy.mockRestore()
+  })
+
+  it('requires upload responses to include created_new', async () => {
+    const staleAssets = [validAsset({ id: 'stale-input', tags: ['input'] })]
+    const consoleSpy = vi.spyOn(console, 'error').mockImplementation(() => {})
+    fetchApiMock
+      .mockResolvedValueOnce(buildResponse({ assets: staleAssets }))
+      .mockResolvedValueOnce(
+        buildResponse(validAsset({ id: 'uploaded-input', tags: ['input'] }))
+      )
+
+    await assetService.getInputAssetsIncludingPublic()
+    await expect(
+      assetService.uploadAssetFromUrl({
+        url: 'https://example.com/input.png',
+        name: 'input.png',
+        tags: ['input']
+      })
+    ).rejects.toThrow('Failed to upload asset')
+    const cached = await assetService.getInputAssetsIncludingPublic()
+
+    expect(cached).toEqual(staleAssets)
+    expect(fetchApiMock).toHaveBeenCalledTimes(2)
+    consoleSpy.mockRestore()
+  })
+
+  it('returns validated upload responses with created_new', async () => {
+    const uploadedAsset = {
+      ...validAsset({ id: 'uploaded-input', tags: ['input'] }),
+      created_new: true
+    }
+    fetchApiMock.mockResolvedValueOnce(buildResponse(uploadedAsset))
+
+    await expect(
+      assetService.uploadAssetFromUrl({
+        url: 'https://example.com/input.png',
+        name: 'input.png',
+        tags: ['input']
+      })
+    ).resolves.toEqual(uploadedAsset)
+  })
+})
+
+describe(assetService.uploadAssetFromBase64, () => {
+  beforeEach(() => {
+    vi.clearAllMocks()
+    assetService.invalidateInputAssetsIncludingPublic()
+  })
+
+  it('throws before calling the network when data is not a data URL', async () => {
+    await expect(
+      assetService.uploadAssetFromBase64({
+        data: 'not-a-data-url',
+        name: 'image.png'
+      })
+    ).rejects.toThrow('Invalid data URL')
+
+    expect(fetchApiMock).not.toHaveBeenCalled()
+  })
+
+  it('does not invalidate cached input assets when the upload response is invalid', async () => {
+    const staleAssets = [validAsset({ id: 'stale-input', tags: ['input'] })]
+    const consoleSpy = vi.spyOn(console, 'error').mockImplementation(() => {})
+    const fetchSpy = vi
+      .spyOn(globalThis, 'fetch')
+      .mockResolvedValueOnce(new Response('hello'))
+    fetchApiMock
+      .mockResolvedValueOnce(buildResponse({ assets: staleAssets }))
+      .mockResolvedValueOnce(buildResponse({ id: 'missing-name' }))
+
+    await assetService.getInputAssetsIncludingPublic()
+    await expect(
+      assetService.uploadAssetFromBase64({
+        data: 'data:text/plain;base64,aGVsbG8=',
+        name: 'input.txt',
+        tags: ['input']
+      })
+    ).rejects.toThrow('Failed to upload asset')
+    const cached = await assetService.getInputAssetsIncludingPublic()
+
+    expect(cached).toEqual(staleAssets)
+    expect(fetchApiMock).toHaveBeenCalledTimes(2)
+    fetchSpy.mockRestore()
+    consoleSpy.mockRestore()
+  })
+
+  it('rejects upload responses with a non-boolean created_new', async () => {
+    const staleAssets = [validAsset({ id: 'stale-input', tags: ['input'] })]
+    const consoleSpy = vi.spyOn(console, 'error').mockImplementation(() => {})
+    const fetchSpy = vi
+      .spyOn(globalThis, 'fetch')
+      .mockResolvedValueOnce(new Response('hello'))
+    fetchApiMock
+      .mockResolvedValueOnce(buildResponse({ assets: staleAssets }))
+      .mockResolvedValueOnce(
+        buildResponse({
+          ...validAsset({ id: 'uploaded-input', tags: ['input'] }),
+          created_new: 'true'
+        })
+      )
+
+    await assetService.getInputAssetsIncludingPublic()
+    await expect(
+      assetService.uploadAssetFromBase64({
+        data: 'data:text/plain;base64,aGVsbG8=',
+        name: 'input.txt',
+        tags: ['input']
+      })
+    ).rejects.toThrow('Failed to upload asset')
+    const cached = await assetService.getInputAssetsIncludingPublic()
+
+    expect(cached).toEqual(staleAssets)
+    expect(fetchApiMock).toHaveBeenCalledTimes(2)
+    fetchSpy.mockRestore()
+    consoleSpy.mockRestore()
+  })
+})
+
+describe(assetService.uploadAssetAsync, () => {
+  beforeEach(() => {
+    vi.clearAllMocks()
+  })
+
+  it('returns an async result when the server responds 202', async () => {
+    fetchApiMock.mockResolvedValueOnce(
+      buildResponse(
+        { task_id: 'task-1', status: 'running' },
+        { ok: true, status: 202 }
+      )
+    )
+
+    const result = await assetService.uploadAssetAsync({
+      source_url: 'https://example.com/model.safetensors'
+    })
+
+    expect(result).toEqual({
+      type: 'async',
+      task: { task_id: 'task-1', status: 'running' }
+    })
+  })
+
+  it('returns a sync result when the server responds 200', async () => {
+    fetchApiMock.mockResolvedValueOnce(
+      buildResponse(validAsset({ id: 'asset-2', name: 'sync.safetensors' }))
+    )
+
+    const result = await assetService.uploadAssetAsync({
+      source_url: 'https://example.com/model.safetensors'
+    })
+
+    expect(result).toEqual({
+      type: 'sync',
+      asset: expect.objectContaining({ id: 'asset-2' })
+    })
+  })
+})
+
+describe(assetService.deleteAsset, () => {
+  beforeEach(() => {
+    vi.clearAllMocks()
+  })
+
+  it('throws an error containing the status code when the response is not ok', async () => {
+    fetchApiMock.mockResolvedValueOnce(
+      buildResponse(null, { ok: false, status: 503 })
+    )
+
+    await expect(assetService.deleteAsset('asset-1')).rejects.toThrow(/503/)
+  })
+
+  it('issues a DELETE to the asset endpoint when the response is ok', async () => {
+    fetchApiMock.mockResolvedValueOnce(buildResponse(null))
+
+    await assetService.deleteAsset('asset-1')
+
+    expect(fetchApiMock).toHaveBeenCalledWith(
+      '/assets/asset-1',
+      expect.objectContaining({ method: 'DELETE' })
+    )
+  })
+})
+
+describe(assetService.getAssetModelFolders, () => {
+  beforeEach(() => {
+    vi.clearAllMocks()
+  })
+
+  it('filters out missing-tagged assets and blacklisted directories, returning alphabetical unique folders without include_public', async () => {
+    fetchApiMock.mockResolvedValueOnce(
+      buildResponse({
+        assets: [
+          validAsset({ id: 'a', tags: ['models', 'loras'] }),
+          validAsset({ id: 'b', tags: ['models', 'checkpoints'] }),
+          validAsset({ id: 'c', tags: ['models', 'configs'] }),
+          validAsset({ id: 'd', tags: ['models', 'missing', 'controlnet'] }),
+          validAsset({ id: 'e', tags: ['models', 'loras'] })
+        ]
+      })
+    )
+
+    const folders = await assetService.getAssetModelFolders()
+
+    expect(folders).toEqual([
+      { name: 'checkpoints', folders: [] },
+      { name: 'loras', folders: [] }
+    ])
+
+    const requestedUrl = fetchApiMock.mock.calls[0]?.[0] as string
+    const params = new URL(requestedUrl, 'http://localhost').searchParams
+    expect(params.has('include_public')).toBe(false)
+  })
+})
+
+describe(assetService.updateAsset, () => {
+  beforeEach(() => {
+    vi.clearAllMocks()
+  })
+
+  it('throws when the response body fails schema validation', async () => {
+    fetchApiMock.mockResolvedValueOnce(
+      buildResponse({ name: 'no-id-field.safetensors' })
+    )
+
+    await expect(
+      assetService.updateAsset('asset-1', { name: 'renamed.safetensors' })
+    ).rejects.toThrow(/Invalid response/)
+  })
+
+  it('PUTs the JSON payload and returns the parsed asset', async () => {
+    fetchApiMock.mockResolvedValueOnce(
+      buildResponse(validAsset({ id: 'asset-1', name: 'renamed.safetensors' }))
+    )
+
+    const result = await assetService.updateAsset('asset-1', {
+      name: 'renamed.safetensors'
+    })
+
+    expect(result).toEqual(
+      expect.objectContaining({ id: 'asset-1', name: 'renamed.safetensors' })
+    )
+    expect(fetchApiMock).toHaveBeenCalledWith(
+      '/assets/asset-1',
+      expect.objectContaining({
+        method: 'PUT',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ name: 'renamed.safetensors' })
+      })
+    )
+  })
+})
+
+describe(assetService.getAssetsByTag, () => {
+  beforeEach(() => {
+    vi.clearAllMocks()
+  })
+
+  it('forwards include_public=true by default and excludes missing-tagged assets', async () => {
+    fetchApiMock.mockResolvedValueOnce(
+      buildResponse({
+        assets: [
+          validAsset({ id: 'visible', tags: ['input'] }),
+          validAsset({ id: 'hidden', tags: ['input', 'missing'] })
+        ]
+      })
+    )
+
+    const assets = await assetService.getAssetsByTag('input')
+
+    expect(assets.map((a) => a.id)).toEqual(['visible'])
+
+    const requestedUrl = fetchApiMock.mock.calls[0]?.[0] as string
+    const params = new URL(requestedUrl, 'http://localhost').searchParams
+    expect(params.get('include_public')).toBe('true')
+  })
+})
+
+describe(assetService.getAllAssetsByTag, () => {
+  beforeEach(() => {
+    vi.clearAllMocks()
+  })
+
+  it('paginates tagged asset requests with include_public=true', async () => {
+    fetchApiMock
+      .mockResolvedValueOnce(
+        buildResponse({
+          assets: [
+            validAsset({ id: 'a', tags: ['input'] }),
+            validAsset({ id: 'b', tags: ['input'] })
+          ]
+        })
+      )
+      .mockResolvedValueOnce(
+        buildResponse({
+          assets: [validAsset({ id: 'c', tags: ['input'] })]
+        })
+      )
+
+    const assets = await assetService.getAllAssetsByTag('input', true, {
+      limit: 2
+    })
+
+    expect(assets.map((a) => a.id)).toEqual(['a', 'b', 'c'])
+
+    const firstUrl = fetchApiMock.mock.calls[0]?.[0] as string
+    const firstParams = new URL(firstUrl, 'http://localhost').searchParams
+    expect(firstParams.get('include_public')).toBe('true')
+    expect(firstParams.get('limit')).toBe('2')
+    expect(firstParams.has('offset')).toBe(false)
+
+    const secondUrl = fetchApiMock.mock.calls[1]?.[0] as string
+    const secondParams = new URL(secondUrl, 'http://localhost').searchParams
+    expect(secondParams.get('include_public')).toBe('true')
+    expect(secondParams.get('limit')).toBe('2')
+    expect(secondParams.get('offset')).toBe('2')
+  })
+
+  it('paginates from raw response size before filtering missing-tagged assets', async () => {
+    fetchApiMock
+      .mockResolvedValueOnce(
+        buildResponse({
+          assets: [
+            validAsset({ id: 'visible', tags: ['input'] }),
+            validAsset({ id: 'hidden', tags: ['input', MISSING_TAG] })
+          ]
+        })
+      )
+      .mockResolvedValueOnce(
+        buildResponse({
+          assets: [validAsset({ id: 'later-public', tags: ['input'] })]
+        })
+      )
+
+    const assets = await assetService.getAllAssetsByTag('input', true, {
+      limit: 2
+    })
+
+    expect(assets.map((a) => a.id)).toEqual(['visible', 'later-public'])
+    expect(fetchApiMock).toHaveBeenCalledTimes(2)
+
+    const secondUrl = fetchApiMock.mock.calls[1]?.[0]
+    if (typeof secondUrl !== 'string') {
+      throw new Error('Expected a second asset request URL')
+    }
+    const secondParams = new URL(secondUrl, 'http://localhost').searchParams
+    expect(secondParams.get('offset')).toBe('2')
+  })
+
+  it('honors has_more when walking tagged asset pages', async () => {
+    fetchApiMock
+      .mockResolvedValueOnce(
+        buildResponse({
+          assets: [
+            validAsset({ id: 'first', tags: ['input'] }),
+            validAsset({ id: 'second', tags: ['input'] })
+          ],
+          has_more: true
+        })
+      )
+      .mockResolvedValueOnce(
+        buildResponse({
+          assets: [validAsset({ id: 'later-public', tags: ['input'] })],
+          has_more: false
+        })
+      )
+
+    const assets = await assetService.getAllAssetsByTag('input', true, {
+      limit: 3
+    })
+
+    expect(assets.map((a) => a.id)).toEqual(['first', 'second', 'later-public'])
+    expect(fetchApiMock).toHaveBeenCalledTimes(2)
+
+    const secondUrl = fetchApiMock.mock.calls[1]?.[0]
+    if (typeof secondUrl !== 'string') {
+      throw new Error('Expected a second asset request URL')
+    }
+    const secondParams = new URL(secondUrl, 'http://localhost').searchParams
+    expect(secondParams.get('offset')).toBe('2')
+  })
+
+  it('passes abort signals through paginated requests', async () => {
+    const controller = new AbortController()
+    fetchApiMock.mockResolvedValueOnce(
+      buildResponse({
+        assets: [validAsset({ id: 'a', tags: ['input'] })]
+      })
+    )
+
+    await assetService.getAllAssetsByTag('input', true, {
+      limit: 2,
+      signal: controller.signal
+    })
+
+    expect(fetchApiMock).toHaveBeenCalledWith(expect.any(String), {
+      signal: controller.signal
+    })
+  })
+
+  it('stops pagination when aborted between pages', async () => {
+    const controller = new AbortController()
+    fetchApiMock.mockImplementationOnce(async () => {
+      controller.abort()
+      return buildResponse({
+        assets: [
+          validAsset({ id: 'a', tags: ['input'] }),
+          validAsset({ id: 'b', tags: ['input'] })
+        ]
+      })
+    })
+
+    await expect(
+      assetService.getAllAssetsByTag('input', true, {
+        limit: 2,
+        signal: controller.signal
+      })
+    ).rejects.toMatchObject({ name: 'AbortError' })
+
+    expect(fetchApiMock).toHaveBeenCalledOnce()
+  })
+})
+
+describe(assetService.getInputAssetsIncludingPublic, () => {
+  beforeEach(() => {
+    vi.clearAllMocks()
+    assetService.invalidateInputAssetsIncludingPublic()
+  })
+
+  it('loads input assets with public assets included and reuses the cache', async () => {
+    const assets = [
+      validAsset({ id: 'user-input', tags: ['input'] }),
+      validAsset({ id: 'public-input', tags: ['input'], is_immutable: true })
+    ]
+    fetchApiMock.mockResolvedValueOnce(buildResponse({ assets }))
+
+    const first = await assetService.getInputAssetsIncludingPublic()
+    const second = await assetService.getInputAssetsIncludingPublic()
+
+    expect(first).toEqual(assets)
+    expect(second).toBe(first)
+    expect(fetchApiMock).toHaveBeenCalledOnce()
+
+    const requestedUrl = fetchApiMock.mock.calls[0]?.[0] as string
+    const params = new URL(requestedUrl, 'http://localhost').searchParams
+    expect(params.get('include_public')).toBe('true')
+    expect(params.get('limit')).toBe('500')
+  })
+
+  it('fetches fresh input assets after explicit invalidation', async () => {
+    const staleAssets = [validAsset({ id: 'stale-input', tags: ['input'] })]
+    const freshAssets = [validAsset({ id: 'fresh-input', tags: ['input'] })]
+    fetchApiMock
+      .mockResolvedValueOnce(buildResponse({ assets: staleAssets }))
+      .mockResolvedValueOnce(buildResponse({ assets: freshAssets }))
+
+    await assetService.getInputAssetsIncludingPublic()
+    assetService.invalidateInputAssetsIncludingPublic()
+    const refreshed = await assetService.getInputAssetsIncludingPublic()
+
+    expect(refreshed).toEqual(freshAssets)
+    expect(fetchApiMock).toHaveBeenCalledTimes(2)
+  })
+
+  it('does not let one caller abort the shared input asset load for other callers', async () => {
+    const firstController = new AbortController()
+    const secondController = new AbortController()
+    const assets = [validAsset({ id: 'public-input', tags: ['input'] })]
+    let resolveResponse!: (response: Response) => void
+    let serviceSignal: AbortSignal | undefined
+    fetchApiMock.mockImplementationOnce(async (_url, options) => {
+      serviceSignal = options?.signal ?? undefined
+      return await new Promise<Response>((resolve) => {
+        resolveResponse = resolve
+      })
+    })
+
+    const first = assetService.getInputAssetsIncludingPublic(
+      firstController.signal
+    )
+    const second = assetService.getInputAssetsIncludingPublic(
+      secondController.signal
+    )
+    firstController.abort()
+
+    await expect(first).rejects.toMatchObject({ name: 'AbortError' })
+    expect(serviceSignal).toBeUndefined()
+
+    resolveResponse(buildResponse({ assets }))
+
+    await expect(second).resolves.toEqual(assets)
+    expect(fetchApiMock).toHaveBeenCalledOnce()
+  })
+
+  it('keeps the shared input asset load alive after all callers abort', async () => {
+    const firstController = new AbortController()
+    const secondController = new AbortController()
+    const assets = [validAsset({ id: 'public-input', tags: ['input'] })]
+    let resolveResponse!: (response: Response) => void
+    fetchApiMock.mockImplementationOnce(
+      async () =>
+        await new Promise<Response>((resolve) => {
+          resolveResponse = resolve
+        })
+    )
+
+    const first = assetService.getInputAssetsIncludingPublic(
+      firstController.signal
+    )
+    const second = assetService.getInputAssetsIncludingPublic(
+      secondController.signal
+    )
+    firstController.abort()
+    secondController.abort()
+
+    await expect(first).rejects.toMatchObject({ name: 'AbortError' })
+    await expect(second).rejects.toMatchObject({ name: 'AbortError' })
+
+    resolveResponse(buildResponse({ assets }))
+    await Promise.resolve()
+
+    await expect(assetService.getInputAssetsIncludingPublic()).resolves.toEqual(
+      assets
+    )
+    expect(fetchApiMock).toHaveBeenCalledOnce()
+  })
+
+  it('does not abort in-flight input asset loads when invalidated', async () => {
+    const assets = [validAsset({ id: 'stale-input', tags: ['input'] })]
+    const freshAssets = [validAsset({ id: 'fresh-input', tags: ['input'] })]
+    let resolveResponse!: (response: Response) => void
+    fetchApiMock
+      .mockImplementationOnce(
+        async () =>
+          await new Promise<Response>((resolve) => {
+            resolveResponse = resolve
+          })
+      )
+      .mockResolvedValueOnce(buildResponse({ assets: freshAssets }))
+
+    const inFlight = assetService.getInputAssetsIncludingPublic()
+    assetService.invalidateInputAssetsIncludingPublic()
+
+    resolveResponse(buildResponse({ assets }))
+
+    await expect(inFlight).resolves.toEqual(assets)
+    await expect(assetService.getInputAssetsIncludingPublic()).resolves.toEqual(
+      freshAssets
+    )
+    expect(fetchApiMock).toHaveBeenCalledTimes(2)
+  })
+
+  it('invalidates cached input assets after deleting an asset', async () => {
+    const staleAssets = [validAsset({ id: 'stale-input', tags: ['input'] })]
+    const freshAssets = [validAsset({ id: 'fresh-input', tags: ['input'] })]
+    fetchApiMock
+      .mockResolvedValueOnce(buildResponse({ assets: staleAssets }))
+      .mockResolvedValueOnce(buildResponse(null))
+      .mockResolvedValueOnce(buildResponse({ assets: freshAssets }))
+
+    await assetService.getInputAssetsIncludingPublic()
+    await assetService.deleteAsset('stale-input')
+    const refreshed = await assetService.getInputAssetsIncludingPublic()
+
+    expect(refreshed).toEqual(freshAssets)
+    expect(fetchApiMock).toHaveBeenCalledTimes(3)
+    expect(fetchApiMock.mock.calls[1]).toEqual([
+      '/assets/stale-input',
+      expect.objectContaining({ method: 'DELETE' })
+    ])
+  })
+
+  it('invalidates cached input assets after an input asset upload', async () => {
+    const staleAssets = [validAsset({ id: 'stale-input', tags: ['input'] })]
+    const uploadedAsset = validAsset({ id: 'uploaded-input', tags: ['input'] })
+    const freshAssets = [uploadedAsset]
+    fetchApiMock
+      .mockResolvedValueOnce(buildResponse({ assets: staleAssets }))
+      .mockResolvedValueOnce(buildResponse(uploadedAsset))
+      .mockResolvedValueOnce(buildResponse({ assets: freshAssets }))
+
+    await assetService.getInputAssetsIncludingPublic()
+    await assetService.uploadAssetAsync({
+      source_url: 'https://example.com/input.png',
+      tags: ['input']
+    })
+    const refreshed = await assetService.getInputAssetsIncludingPublic()
+
+    expect(refreshed).toEqual(freshAssets)
+    expect(fetchApiMock).toHaveBeenCalledTimes(3)
+  })
+
+  it('does not invalidate cached input assets for pending async input uploads', async () => {
+    const staleAssets = [validAsset({ id: 'stale-input', tags: ['input'] })]
+    fetchApiMock
+      .mockResolvedValueOnce(buildResponse({ assets: staleAssets }))
+      .mockResolvedValueOnce(
+        buildResponse(
+          { task_id: 'task-1', status: 'running' },
+          { ok: true, status: 202 }
+        )
+      )
+
+    await assetService.getInputAssetsIncludingPublic()
+    await assetService.uploadAssetAsync({
+      source_url: 'https://example.com/input.png',
+      tags: ['input']
+    })
+    const cached = await assetService.getInputAssetsIncludingPublic()
+
+    expect(cached).toEqual(staleAssets)
+    expect(fetchApiMock).toHaveBeenCalledTimes(2)
+  })
+
+  it('does not invalidate cached input assets for non-input uploads', async () => {
+    const staleAssets = [validAsset({ id: 'stale-input', tags: ['input'] })]
+    fetchApiMock
+      .mockResolvedValueOnce(buildResponse({ assets: staleAssets }))
+      .mockResolvedValueOnce(buildResponse(validAsset({ tags: ['models'] })))
+
+    await assetService.getInputAssetsIncludingPublic()
+    await assetService.uploadAssetAsync({
+      source_url: 'https://example.com/model.safetensors',
+      tags: ['models']
+    })
+    const cached = await assetService.getInputAssetsIncludingPublic()
+
+    expect(cached).toEqual(staleAssets)
+    expect(fetchApiMock).toHaveBeenCalledTimes(2)
+  })
+})
+
+describe(assetService.checkAssetHash, () => {
+  beforeEach(() => {
+    vi.clearAllMocks()
+  })
+
+  it.each([
+    [200, 'exists'],
+    [404, 'missing'],
+    [400, 'invalid']
+  ] as const)('maps %s responses to %s', async (status, expected) => {
+    const hash =
+      'blake3:1111111111111111111111111111111111111111111111111111111111111111'
+    fetchApiMock.mockResolvedValueOnce(buildResponse(null, { status }))
+
+    await expect(assetService.checkAssetHash(hash)).resolves.toBe(expected)
+
+    expect(fetchApiMock).toHaveBeenCalledWith(
+      `/assets/hash/${encodeURIComponent(hash)}`,
+      {
+        method: 'HEAD',
+        signal: undefined
+      }
+    )
+  })
+
+  it('throws for unexpected responses', async () => {
+    fetchApiMock.mockResolvedValueOnce(buildResponse(null, { status: 500 }))
+
+    await expect(assetService.checkAssetHash('blake3:abc')).rejects.toThrow(
+      'Unexpected asset hash check status: 500'
+    )
+  })
+})
diff --git a/src/platform/assets/services/assetService.ts b/src/platform/assets/services/assetService.ts
index d85a44aec3f..7a2fbb256f0 100644
--- a/src/platform/assets/services/assetService.ts
+++ b/src/platform/assets/services/assetService.ts
@@ -1,4 +1,5 @@
 import { fromZodError } from 'zod-validation-error'
+import { z } from 'zod'
 
 import { st } from '@/i18n'
 
@@ -28,9 +29,14 @@ export interface PaginationOptions {
   offset?: number
 }
 
+interface AssetPaginationOptions extends PaginationOptions {
+  signal?: AbortSignal
+}
+
 interface AssetRequestOptions extends PaginationOptions {
   includeTags: string[]
   includePublic?: boolean
+  signal?: AbortSignal
 }
 
 interface AssetExportOptions {
@@ -169,10 +175,61 @@ const ASSETS_DOWNLOAD_ENDPOINT = '/assets/download'
 const ASSETS_EXPORT_ENDPOINT = '/assets/export'
 const EXPERIMENTAL_WARNING = `EXPERIMENTAL: If you are seeing this please make sure "Comfy.Assets.UseAssetAPI" is set to "false" in your ComfyUI Settings.\n`
 const DEFAULT_LIMIT = 500
+const INPUT_ASSETS_WITH_PUBLIC_LIMIT = 500
 
 export const MODELS_TAG = 'models'
+/** Asset tag used by the backend for placeholder records that are not installed. */
 export const MISSING_TAG = 'missing'
 
+/** Result of a HEAD lookup against an exact asset hash. */
+export type AssetHashStatus = 'exists' | 'missing' | 'invalid'
+
+const BLAKE3_ASSET_HASH_PATTERN = /^blake3:[0-9a-f]{64}$/i
+const BLAKE3_HEX_PATTERN = /^[0-9a-f]{64}$/i
+const uploadedAssetResponseSchema = assetItemSchema.extend({
+  created_new: z.boolean()
+})
+
+/** Returns true for a prefixed BLAKE3 asset hash: `blake3:<64 hex>`. */
+export function isBlake3AssetHash(value: string): boolean {
+  return BLAKE3_ASSET_HASH_PATTERN.test(value)
+}
+
+/** Converts a raw 64-character BLAKE3 hex digest into an asset hash. */
+export function toBlake3AssetHash(hash: string | undefined): string | null {
+  if (!hash || !BLAKE3_HEX_PATTERN.test(hash)) return null
+  return `blake3:${hash}`
+}
+
+function createAbortError(): DOMException {
+  return new DOMException('Aborted', 'AbortError')
+}
+
+function throwIfAborted(signal?: AbortSignal): void {
+  if (signal?.aborted) throw createAbortError()
+}
+
+async function withCallerAbort<T>(
+  promise: Promise<T>,
+  signal?: AbortSignal
+): Promise<T> {
+  throwIfAborted(signal)
+  if (!signal) return await promise
+
+  let removeAbortListener = () => {}
+  const abortPromise = new Promise<never>((_, reject) => {
+    const onAbort = () => reject(createAbortError())
+    signal.addEventListener('abort', onAbort, { once: true })
+    removeAbortListener = () => signal.removeEventListener('abort', onAbort)
+  })
+
+  try {
+    return await Promise.race([promise, abortPromise])
+  } finally {
+    removeAbortListener()
+  }
+}
+
 /**
  * Validates asset response data using Zod schema
  */
@@ -186,11 +243,43 @@ function validateAssetResponse(data: unknown): AssetResponse {
   )
 }
 
+function validateUploadedAssetResponse(
+  data: unknown
+): AssetItem & { created_new: boolean } {
+  const result = uploadedAssetResponseSchema.safeParse(data)
+  if (result.success) {
+    return result.data
+  }
+
+  console.error('Invalid asset upload response:', fromZodError(result.error))
+  throw new Error(
+    st(
+      'assetBrowser.errorUploadFailed',
+      'Failed to upload asset. Please try again.'
+    )
+  )
+}
+
 /**
  * Private service for asset-related network requests
  * Not exposed globally - used internally by ComfyApi
  */
 function createAssetService() {
+  let inputAssetsIncludingPublic: AssetItem[] | null = null
+  let inputAssetsIncludingPublicRequestId = 0
+  let pendingInputAssetsIncludingPublic: Promise<AssetItem[]> | null = null
+
+  /** Invalidates the cached public-inclusive input assets without aborting in-flight readers. */
+  function invalidateInputAssetsIncludingPublic(): void {
+    inputAssetsIncludingPublicRequestId++
+    pendingInputAssetsIncludingPublic = null
+    inputAssetsIncludingPublic = null
+  }
+
+  function invalidateInputAssetsCacheIfNeeded(tags?: string[]): void {
+    if (tags?.includes('input')) invalidateInputAssetsIncludingPublic()
+  }
+
   /**
    * Handles API response with consistent error handling and Zod validation
    */
@@ -202,7 +291,8 @@ function createAssetService() {
       includeTags,
       limit = DEFAULT_LIMIT,
       offset,
-      includePublic
+      includePublic,
+      signal
     } = options
     const queryParams = new URLSearchParams({
       include_tags: includeTags.join(','),
@@ -216,7 +306,9 @@ function createAssetService() {
     }
 
     const url = `${ASSETS_ENDPOINT}?${queryParams.toString()}`
-    const res = await api.fetchApi(url)
+    const res = signal
+      ? await api.fetchApi(url, { signal })
+      : await api.fetchApi(url)
     if (!res.ok) {
       throw new Error(
         `${EXPERIMENTAL_WARNING}Unable to load ${context}: Server returned ${res.status}. Please try again.`
@@ -402,15 +494,16 @@ function createAssetService() {
    * @param options - Pagination options
    * @param options.limit - Maximum number of assets to return (default: 500)
    * @param options.offset - Number of assets to skip (default: 0)
+   * @param options.signal - Optional abort signal for cancelling the request
    * @returns Promise<AssetItem[]> - Full asset objects filtered by tag, excluding missing assets
    */
   async function getAssetsByTag(
     tag: string,
     includePublic: boolean = true,
-    { limit = DEFAULT_LIMIT, offset = 0 }: PaginationOptions = {}
+    { limit = DEFAULT_LIMIT, offset = 0, signal }: AssetPaginationOptions = {}
   ): Promise<AssetItem[]> {
     const data = await handleAssetRequest(
-      { includeTags: [tag], limit, offset, includePublic },
+      { includeTags: [tag], limit, offset, includePublic, signal },
       `assets for tag ${tag}`
     )
 
@@ -419,6 +512,116 @@ function createAssetService() {
     )
   }
 
+  /**
+   * Gets every asset for a tag by walking paginated asset API responses.
+   *
+   * @param tag - The tag to filter by (e.g., 'models', 'input')
+   * @param includePublic - Whether to include public assets (default: true)
+   * @param options - Pagination options
+   * @param options.limit - Page size for each request (default: 500)
+   * @param options.signal - Optional abort signal for cancelling requests
+   * @returns Promise<AssetItem[]> - Full asset objects filtered by tag
+   */
+  async function getAllAssetsByTag(
+    tag: string,
+    includePublic: boolean = true,
+    { limit = DEFAULT_LIMIT, signal }: AssetPaginationOptions = {}
+  ): Promise<AssetItem[]> {
+    const assets: AssetItem[] = []
+    const pageSize = limit > 0 ? limit : DEFAULT_LIMIT
+    let offset = 0
+
+    while (true) {
+      if (signal?.aborted) throw createAbortError()
+
+      const data = await handleAssetRequest(
+        {
+          includeTags: [tag],
+          limit: pageSize,
+          offset,
+          includePublic,
+          signal
+        },
+        `assets for tag ${tag}`
+      )
+      const batch = data.assets ?? []
+      assets.push(...batch.filter((asset) => !asset.tags.includes(MISSING_TAG)))
+
+      const noMoreFromServer = data.has_more === false
+      const inferredLastPage =
+        data.has_more === undefined && batch.length < pageSize
+      if (batch.length === 0 || noMoreFromServer || inferredLastPage) {
+        return assets
+      }
+
+      offset += batch.length
+    }
+  }
+
+  function startInputAssetsIncludingPublicRequest(): Promise<AssetItem[]> {
+    const requestId = ++inputAssetsIncludingPublicRequestId
+
+    pendingInputAssetsIncludingPublic = getAllAssetsByTag('input', true, {
+      limit: INPUT_ASSETS_WITH_PUBLIC_LIMIT
+    })
+      .then((assets) => {
+        if (requestId === inputAssetsIncludingPublicRequestId) {
+          inputAssetsIncludingPublic = assets
+        }
+        return assets
+      })
+      .finally(() => {
+        if (requestId === inputAssetsIncludingPublicRequestId) {
+          pendingInputAssetsIncludingPublic = null
+        }
+      })
+
+    void pendingInputAssetsIncludingPublic.catch(() => {})
+    return pendingInputAssetsIncludingPublic
+  }
+
+  /**
+   * Gets cached input assets including public assets for missing media checks.
+   * Caller aborts cancel only that caller; shared fetches are invalidated
+   * through invalidateInputAssetsIncludingPublic().
+   */
+  async function getInputAssetsIncludingPublic(
+    signal?: AbortSignal
+  ): Promise<AssetItem[]> {
+    throwIfAborted(signal)
+    if (inputAssetsIncludingPublic) return inputAssetsIncludingPublic
+
+    const request =
+      pendingInputAssetsIncludingPublic ??
+      startInputAssetsIncludingPublicRequest()
+    return await withCallerAbort(request, signal)
+  }
+
+  /**
+   * Checks whether an asset exists for an exact asset hash.
+   *
+   * Uses the HEAD /assets/hash/{hash} endpoint and maps status-only responses:
+   * 200 -> exists, 404 -> missing, and 400 -> invalid hash format.
+   */
+  async function checkAssetHash(
+    assetHash: string,
+    signal?: AbortSignal
+  ): Promise<AssetHashStatus> {
+    const response = await api.fetchApi(
+      `${ASSETS_ENDPOINT}/hash/${encodeURIComponent(assetHash)}`,
+      {
+        method: 'HEAD',
+        signal
+      }
+    )
+
+    if (response.status === 200) return 'exists'
+    if (response.status === 404) return 'missing'
+    if (response.status === 400) return 'invalid'
+
+    throw new Error(`Unexpected asset hash check status: ${response.status}`)
+  }
+
   /**
    * Deletes an asset by ID
    * Only available in cloud environment
@@ -437,6 +640,8 @@ function createAssetService() {
         `Unable to delete asset ${id}: Server returned ${res.status}`
       )
     }
+
+    invalidateInputAssetsIncludingPublic()
   }
 
   /**
@@ -544,7 +749,9 @@ function createAssetService() {
       )
     }
 
-    return await res.json()
+    const asset = validateUploadedAssetResponse(await res.json())
+    invalidateInputAssetsCacheIfNeeded(params.tags)
+    return asset
   }
 
   /**
@@ -597,7 +804,9 @@ function createAssetService() {
       )
     }
 
-    return await res.json()
+    const asset = validateUploadedAssetResponse(await res.json())
+    invalidateInputAssetsCacheIfNeeded(params.tags)
+    return asset
   }
 
   /**
@@ -627,6 +836,7 @@ function createAssetService() {
     if (!parseResult.success) {
       throw fromZodError(parseResult.error)
     }
+    invalidateInputAssetsIncludingPublic()
     return parseResult.data
   }
 
@@ -657,6 +867,7 @@ function createAssetService() {
     if (!parseResult.success) {
       throw fromZodError(parseResult.error)
     }
+    invalidateInputAssetsIncludingPublic()
     return parseResult.data
   }
 
@@ -708,6 +919,13 @@ function createAssetService() {
           )
         )
       }
+      if (
+        params.tags?.includes('input') &&
+        result.data.type === 'async' &&
+        result.data.task.status === 'completed'
+      ) {
+        invalidateInputAssetsIncludingPublic()
+      }
       return result.data
     }
 
@@ -723,6 +941,7 @@ function createAssetService() {
         )
       )
     }
+    invalidateInputAssetsCacheIfNeeded(params.tags)
     return result.data
   }
 
@@ -763,6 +982,10 @@ function createAssetService() {
     getAssetsForNodeType,
     getAssetDetails,
     getAssetsByTag,
+    getAllAssetsByTag,
+    getInputAssetsIncludingPublic,
+    invalidateInputAssetsIncludingPublic,
+    checkAssetHash,
     deleteAsset,
     updateAsset,
     addAssetTags,
diff --git a/src/platform/missingMedia/missingMediaScan.test.ts b/src/platform/missingMedia/missingMediaScan.test.ts
index 867bb4d3f7a..8e77aae88cd 100644
--- a/src/platform/missingMedia/missingMediaScan.test.ts
+++ b/src/platform/missingMedia/missingMediaScan.test.ts
@@ -1,9 +1,11 @@
 import { fromAny } from '@total-typescript/shoehorn'
-import { describe, expect, it, vi } from 'vitest'
+import { beforeEach, describe, expect, it, vi } from 'vitest'
 
 import type { LGraph } from '@/lib/litegraph/src/LGraph'
 import type { LGraphNode } from '@/lib/litegraph/src/LGraphNode'
 import type { IComboWidget } from '@/lib/litegraph/src/types/widgets'
+import type { AssetItem } from '@/platform/assets/schemas/assetSchema'
+import type * as AssetServiceModule from '@/platform/assets/services/assetService'
 import {
   scanAllMediaCandidates,
   scanNodeMediaCandidates,
@@ -13,6 +15,13 @@ import {
 } from './missingMediaScan'
 import type { MissingMediaCandidate } from './types'
 
+const { mockCheckAssetHash, mockGetInputAssetsIncludingPublic } = vi.hoisted(
+  () => ({
+    mockCheckAssetHash: vi.fn(),
+    mockGetInputAssetsIncludingPublic: vi.fn()
+  })
+)
+
 vi.mock('@/utils/graphTraversalUtil', () => ({
   collectAllNodes: (graph: { _testNodes: LGraphNode[] }) => graph._testNodes,
   getExecutionIdByNode: (
@@ -21,6 +30,21 @@ vi.mock('@/utils/graphTraversalUtil', () => ({
   ) => node._testExecutionId ?? String(node.id)
 }))
 
+vi.mock('@/platform/assets/services/assetService', async () => {
+  const actual = await vi.importActual<typeof AssetServiceModule>(
+    '@/platform/assets/services/assetService'
+  )
+
+  return {
+    ...actual,
+    assetService: {
+      ...actual.assetService,
+      checkAssetHash: mockCheckAssetHash,
+      getInputAssetsIncludingPublic: mockGetInputAssetsIncludingPublic
+    }
+  }
+})
+
 function makeCandidate(
   nodeId: string,
   name: string,
@@ -70,6 +94,16 @@ function makeGraph(nodes: LGraphNode[]): LGraph {
   return fromAny<LGraph, unknown>({ _testNodes: nodes })
 }
 
+function makeAsset(name: string, assetHash: string | null = null): AssetItem {
+  return {
+    id: name,
+    name,
+    asset_hash: assetHash,
+    mime_type: null,
+    tags: ['input']
+  }
+}
+
 describe('scanNodeMediaCandidates', () => {
   it('returns candidate for a LoadImage node with missing image', () => {
     const graph = makeGraph([])
@@ -232,37 +266,43 @@ describe('groupCandidatesByMediaType', () => {
 })
 
 describe('verifyCloudMediaCandidates', () => {
-  it('marks candidates missing when not in input assets', async () => {
+  const existingHash =
+    'blake3:1111111111111111111111111111111111111111111111111111111111111111'
+  const missingHash =
+    'blake3:2222222222222222222222222222222222222222222222222222222222222222'
+
+  beforeEach(() => {
+    vi.clearAllMocks()
+    mockCheckAssetHash.mockResolvedValue('missing')
+    mockGetInputAssetsIncludingPublic.mockResolvedValue([])
+  })
+
+  it('marks candidates missing when the asset hash is not found', async () => {
     const candidates = [
-      makeCandidate('1', 'abc123.png', { isMissing: undefined }),
-      makeCandidate('2', 'def456.png', { isMissing: undefined })
+      makeCandidate('1', missingHash, { isMissing: undefined }),
+      makeCandidate('2', existingHash, { isMissing: undefined })
     ]
 
-    const mockStore = {
-      updateInputs: async () => {},
-      inputAssets: [{ asset_hash: 'def456.png', name: 'my-photo.png' }]
-    }
+    const checkAssetHash = vi.fn(async (assetHash: string) =>
+      assetHash === existingHash ? ('exists' as const) : ('missing' as const)
+    )
 
-    await verifyCloudMediaCandidates(candidates, undefined, mockStore)
+    await verifyCloudMediaCandidates(candidates, undefined, checkAssetHash)
 
     expect(candidates[0].isMissing).toBe(true)
     expect(candidates[1].isMissing).toBe(false)
   })
 
-  it('calls updateInputs before checking assets', async () => {
-    let updateCalled = false
-    const candidates = [makeCandidate('1', 'abc.png', { isMissing: undefined })]
-
-    const mockStore = {
-      updateInputs: async () => {
-        updateCalled = true
-      },
-      inputAssets: []
-    }
+  it('uses assetService.checkAssetHash by default', async () => {
+    const candidates = [
+      makeCandidate('1', existingHash, { isMissing: undefined })
+    ]
+    mockCheckAssetHash.mockResolvedValue('exists')
 
-    await verifyCloudMediaCandidates(candidates, undefined, mockStore)
+    await verifyCloudMediaCandidates(candidates)
 
-    expect(updateCalled).toBe(true)
+    expect(candidates[0].isMissing).toBe(false)
+    expect(mockCheckAssetHash).toHaveBeenCalledWith(existingHash, undefined)
   })
 
   it('respects abort signal before execution', async () => {
@@ -270,69 +310,221 @@ describe('verifyCloudMediaCandidates', () => {
     controller.abort()
 
     const candidates = [
-      makeCandidate('1', 'abc123.png', { isMissing: undefined })
+      makeCandidate('1', missingHash, { isMissing: undefined })
     ]
 
     await verifyCloudMediaCandidates(candidates, controller.signal)
 
     expect(candidates[0].isMissing).toBeUndefined()
+    expect(mockCheckAssetHash).not.toHaveBeenCalled()
   })
 
-  it('respects abort signal after updateInputs', async () => {
+  it('respects abort signal after hash verification', async () => {
     const controller = new AbortController()
-    const candidates = [makeCandidate('1', 'abc.png', { isMissing: undefined })]
-
-    const mockStore = {
-      updateInputs: async () => {
-        controller.abort()
-      },
-      inputAssets: [{ asset_hash: 'abc.png', name: 'photo.png' }]
-    }
+    const candidates = [
+      makeCandidate('1', existingHash, { isMissing: undefined })
+    ]
+    const checkAssetHash = vi.fn(async () => {
+      controller.abort()
+      return 'exists' as const
+    })
 
-    await verifyCloudMediaCandidates(candidates, controller.signal, mockStore)
+    await verifyCloudMediaCandidates(
+      candidates,
+      controller.signal,
+      checkAssetHash
+    )
 
     expect(candidates[0].isMissing).toBeUndefined()
   })
 
   it('skips candidates already resolved as true', async () => {
-    const candidates = [makeCandidate('1', 'abc.png', { isMissing: true })]
-
-    const mockStore = {
-      updateInputs: async () => {},
-      inputAssets: []
-    }
+    const candidates = [makeCandidate('1', missingHash, { isMissing: true })]
 
-    await verifyCloudMediaCandidates(candidates, undefined, mockStore)
+    await verifyCloudMediaCandidates(candidates)
 
     expect(candidates[0].isMissing).toBe(true)
+    expect(mockCheckAssetHash).not.toHaveBeenCalled()
   })
 
   it('skips candidates already resolved as false', async () => {
-    const candidates = [makeCandidate('1', 'abc.png', { isMissing: false })]
+    const candidates = [makeCandidate('1', existingHash, { isMissing: false })]
 
-    const mockStore = {
-      updateInputs: async () => {},
-      inputAssets: []
-    }
-
-    await verifyCloudMediaCandidates(candidates, undefined, mockStore)
+    await verifyCloudMediaCandidates(candidates)
 
     expect(candidates[0].isMissing).toBe(false)
+    expect(mockCheckAssetHash).not.toHaveBeenCalled()
   })
 
   it('skips entirely when no pending candidates', async () => {
-    let updateCalled = false
-    const candidates = [makeCandidate('1', 'abc.png', { isMissing: true })]
-
-    const mockStore = {
-      updateInputs: async () => {
-        updateCalled = true
-      },
-      inputAssets: []
-    }
+    const candidates = [makeCandidate('1', missingHash, { isMissing: true })]
+
+    await verifyCloudMediaCandidates(candidates)
+
+    expect(mockCheckAssetHash).not.toHaveBeenCalled()
+  })
+
+  it('falls back to input assets for non-blake3 candidate names', async () => {
+    const candidates = [
+      makeCandidate('1', 'photo.png', { isMissing: undefined }),
+      makeCandidate('2', 'missing.png', { isMissing: undefined })
+    ]
+    const fetchInputAssets = vi.fn(async () => [
+      makeAsset('stored-photo.png', 'photo.png')
+    ])
+
+    await verifyCloudMediaCandidates(
+      candidates,
+      undefined,
+      undefined,
+      fetchInputAssets
+    )
+
+    expect(mockCheckAssetHash).not.toHaveBeenCalled()
+    expect(fetchInputAssets).toHaveBeenCalledOnce()
+    expect(candidates[0].isMissing).toBe(false)
+    expect(candidates[1].isMissing).toBe(true)
+  })
+
+  it('uses public input assets for default legacy fallback', async () => {
+    const candidates = [
+      makeCandidate('1', 'public-photo.png', { isMissing: undefined })
+    ]
+    const inputAssets = Array.from({ length: 500 }, (_, index) =>
+      makeAsset(`asset-${index}.png`)
+    )
+    inputAssets[42] = makeAsset('public-asset-record', 'public-photo.png')
+    mockGetInputAssetsIncludingPublic.mockResolvedValue(inputAssets)
+
+    await verifyCloudMediaCandidates(candidates)
 
-    await verifyCloudMediaCandidates(candidates, undefined, mockStore)
+    expect(mockGetInputAssetsIncludingPublic).toHaveBeenCalledWith(undefined)
+    expect(candidates[0].isMissing).toBe(false)
+  })
+
+  it('silences aborts while loading legacy fallback input assets', async () => {
+    const abortError = new Error('aborted')
+    abortError.name = 'AbortError'
+    const controller = new AbortController()
+    const candidates = [
+      makeCandidate('1', 'photo.png', { isMissing: undefined })
+    ]
+    const fetchInputAssets = vi.fn(async () => {
+      controller.abort()
+      throw abortError
+    })
+
+    await expect(
+      verifyCloudMediaCandidates(
+        candidates,
+        controller.signal,
+        undefined,
+        fetchInputAssets
+      )
+    ).resolves.toBeUndefined()
+
+    expect(candidates[0].isMissing).toBeUndefined()
+  })
+
+  it('silences aborts from the default legacy fallback input asset store path', async () => {
+    const abortError = new Error('aborted')
+    abortError.name = 'AbortError'
+    const controller = new AbortController()
+    const candidates = [
+      makeCandidate('1', 'photo.png', { isMissing: undefined })
+    ]
+    mockGetInputAssetsIncludingPublic.mockImplementationOnce(async () => {
+      controller.abort()
+      throw abortError
+    })
+
+    await expect(
+      verifyCloudMediaCandidates(candidates, controller.signal)
+    ).resolves.toBeUndefined()
+
+    expect(mockGetInputAssetsIncludingPublic).toHaveBeenCalledWith(
+      controller.signal
+    )
+    expect(candidates[0].isMissing).toBeUndefined()
+  })
+
+  it('falls back to input assets when the hash endpoint returns 400', async () => {
+    const candidates = [
+      makeCandidate('1', existingHash, { isMissing: undefined })
+    ]
+    mockCheckAssetHash.mockResolvedValue('invalid')
+    const fetchInputAssets = vi.fn(async () => [
+      makeAsset('photo.png', existingHash)
+    ])
+
+    await verifyCloudMediaCandidates(
+      candidates,
+      undefined,
+      undefined,
+      fetchInputAssets
+    )
+
+    expect(mockCheckAssetHash).toHaveBeenCalledWith(existingHash, undefined)
+    expect(fetchInputAssets).toHaveBeenCalledOnce()
+    expect(candidates[0].isMissing).toBe(false)
+  })
+
+  it('falls back to input assets when hash verification fails', async () => {
+    const warn = vi.spyOn(console, 'warn').mockImplementation(() => {})
+    const candidates = [
+      makeCandidate('1', existingHash, { isMissing: undefined })
+    ]
+    const checkAssetHash = vi.fn(async () => {
+      throw new Error('network failed')
+    })
+    const fetchInputAssets = vi.fn(async () => [
+      makeAsset('photo.png', existingHash)
+    ])
+
+    await verifyCloudMediaCandidates(
+      candidates,
+      undefined,
+      checkAssetHash,
+      fetchInputAssets
+    )
+
+    expect(fetchInputAssets).toHaveBeenCalledOnce()
+    expect(candidates[0].isMissing).toBe(false)
+    expect(warn).toHaveBeenCalledOnce()
+    warn.mockRestore()
+  })
 
-    expect(updateCalled).toBe(false)
+  it('does not call the hash endpoint for malformed blake3-looking values', async () => {
+    const malformedHash = 'blake3:abc'
+    const candidates = [
+      makeCandidate('1', malformedHash, { isMissing: undefined })
+    ]
+    const fetchInputAssets = vi.fn(async () => [
+      makeAsset('legacy.png', malformedHash)
+    ])
+
+    await verifyCloudMediaCandidates(
+      candidates,
+      undefined,
+      undefined,
+      fetchInputAssets
+    )
+
+    expect(mockCheckAssetHash).not.toHaveBeenCalled()
+    expect(fetchInputAssets).toHaveBeenCalledOnce()
+    expect(candidates[0].isMissing).toBe(false)
+  })
+
+  it('deduplicates checks for repeated candidate names', async () => {
+    const candidates = [
+      makeCandidate('1', missingHash, { isMissing: undefined }),
+      makeCandidate('2', missingHash, { isMissing: undefined })
+    ]
+
+    await verifyCloudMediaCandidates(candidates)
+
+    expect(mockCheckAssetHash).toHaveBeenCalledOnce()
+    expect(candidates[0].isMissing).toBe(true)
+    expect(candidates[1].isMissing).toBe(true)
   })
 })
diff --git a/src/platform/missingMedia/missingMediaScan.ts b/src/platform/missingMedia/missingMediaScan.ts
index 7b4592768bb..5050996e06f 100644
--- a/src/platform/missingMedia/missingMediaScan.ts
+++ b/src/platform/missingMedia/missingMediaScan.ts
@@ -18,6 +18,12 @@ import {
 } from '@/utils/graphTraversalUtil'
 import { LGraphEventMode } from '@/lib/litegraph/src/types/globalEnums'
 import { resolveComboValues } from '@/utils/litegraphUtil'
+import type { AssetItem } from '@/platform/assets/schemas/assetSchema'
+import type { AssetHashStatus } from '@/platform/assets/services/assetService'
+import {
+  assetService,
+  isBlake3AssetHash
+} from '@/platform/assets/services/assetService'
 
 /** Map of node types to their media widget name and media type. */
 const MEDIA_NODE_WIDGETS: Record<
@@ -106,41 +112,130 @@ export function scanNodeMediaCandidates(
   return candidates
 }
 
-interface InputVerifier {
-  updateInputs: () => Promise<unknown>
-  inputAssets: Array<{ asset_hash?: string | null; name: string }>
+type AssetHashVerifier = (
+  assetHash: string,
+  signal?: AbortSignal
+) => Promise<AssetHashStatus>
+
+type InputAssetFetcher = (signal?: AbortSignal) => Promise<AssetItem[]>
+
+function groupCandidatesForHashLookup(candidates: MissingMediaCandidate[]): {
+  candidatesByHash: Map<string, MissingMediaCandidate[]>
+  legacyCandidates: MissingMediaCandidate[]
+} {
+  const candidatesByHash = new Map<string, MissingMediaCandidate[]>()
+  const legacyCandidates: MissingMediaCandidate[] = []
+
+  for (const candidate of candidates) {
+    if (!isBlake3AssetHash(candidate.name)) {
+      legacyCandidates.push(candidate)
+      continue
+    }
+
+    const hashCandidates = candidatesByHash.get(candidate.name)
+    if (hashCandidates) hashCandidates.push(candidate)
+    else candidatesByHash.set(candidate.name, [candidate])
+  }
+
+  return { candidatesByHash, legacyCandidates }
+}
+
+async function verifyCandidatesByHash(
+  candidatesByHash: Map<string, MissingMediaCandidate[]>,
+  legacyCandidates: MissingMediaCandidate[],
+  signal: AbortSignal | undefined,
+  checkAssetHash: AssetHashVerifier
+): Promise<void> {
+  await Promise.all(
+    Array.from(candidatesByHash, async ([assetHash, hashCandidates]) => {
+      if (signal?.aborted) return
+
+      let status: AssetHashStatus
+      try {
+        status = await checkAssetHash(assetHash, signal)
+        if (signal?.aborted) return
+      } catch (err) {
+        if (signal?.aborted || isAbortError(err)) return
+        console.warn(
+          '[Missing Media Pipeline] Failed to verify asset hash:',
+          err
+        )
+        legacyCandidates.push(...hashCandidates)
+        return
+      }
+
+      if (status === 'invalid') {
+        legacyCandidates.push(...hashCandidates)
+        return
+      }
+
+      for (const candidate of hashCandidates) {
+        candidate.isMissing = status === 'missing'
+      }
+    })
+  )
 }
 
 /**
- * Verify cloud media candidates against the input assets fetched from the
- * assets store. Mutates candidates' `isMissing` in place.
+ * Verify cloud media candidates by probing the asset hash endpoint first.
+ * Invalid hash values fall back to the legacy input asset list check.
  */
 export async function verifyCloudMediaCandidates(
   candidates: MissingMediaCandidate[],
   signal?: AbortSignal,
-  assetsStore?: InputVerifier
+  checkAssetHash: AssetHashVerifier = assetService.checkAssetHash,
+  fetchInputAssets: InputAssetFetcher = fetchMissingInputAssets
 ): Promise<void> {
   if (signal?.aborted) return
 
   const pending = candidates.filter((c) => c.isMissing === undefined)
   if (pending.length === 0) return
 
-  const store =
-    assetsStore ?? (await import('@/stores/assetsStore')).useAssetsStore()
+  const { candidatesByHash, legacyCandidates } =
+    groupCandidatesForHashLookup(pending)
+  await verifyCandidatesByHash(
+    candidatesByHash,
+    legacyCandidates,
+    signal,
+    checkAssetHash
+  )
+
+  if (signal?.aborted || legacyCandidates.length === 0) return
 
-  await store.updateInputs()
+  let inputAssets: AssetItem[]
+  try {
+    inputAssets = await fetchInputAssets(signal)
+  } catch (err) {
+    if (signal?.aborted || isAbortError(err)) return
+    throw err
+  }
 
   if (signal?.aborted) return
 
   const assetHashes = new Set(
-    store.inputAssets.map((a) => a.asset_hash).filter((h): h is string => !!h)
+    inputAssets.map((a) => a.asset_hash).filter((h): h is string => !!h)
   )
 
-  for (const c of pending) {
-    c.isMissing = !assetHashes.has(c.name)
+  for (const candidate of legacyCandidates) {
+    candidate.isMissing = !assetHashes.has(candidate.name)
   }
 }
 
+async function fetchMissingInputAssets(
+  signal?: AbortSignal
+): Promise<AssetItem[]> {
+  return await assetService.getInputAssetsIncludingPublic(signal)
+}
+
+function isAbortError(err: unknown): boolean {
+  return (
+    typeof err === 'object' &&
+    err !== null &&
+    'name' in err &&
+    err.name === 'AbortError'
+  )
+}
+
 /** Group confirmed-missing candidates by file name into view models. */
 export function groupCandidatesByName(
   candidates: MissingMediaCandidate[]
diff --git a/src/platform/missingModel/missingModelScan.test.ts b/src/platform/missingModel/missingModelScan.test.ts
index cc26dbc609a..05326f8bb01 100644
--- a/src/platform/missingModel/missingModelScan.test.ts
+++ b/src/platform/missingModel/missingModelScan.test.ts
@@ -19,6 +19,11 @@ import activeSubgraphUnmatchedModel from '@/platform/missingModel/__fixtures__/a
 import bypassedSubgraphUnmatchedModel from '@/platform/missingModel/__fixtures__/bypassedSubgraphUnmatchedModel.json' with { type: 'json' }
 import type { MissingModelCandidate } from '@/platform/missingModel/types'
 import type { ComfyWorkflowJSON } from '@/platform/workflow/validation/schemas/workflowSchema'
+import type * as AssetServiceModule from '@/platform/assets/services/assetService'
+
+const { mockCheckAssetHash } = vi.hoisted(() => ({
+  mockCheckAssetHash: vi.fn()
+}))
 
 vi.mock('@/utils/graphTraversalUtil', () => ({
   collectAllNodes: (graph: { _testNodes: LGraphNode[] }) => graph._testNodes,
@@ -28,6 +33,20 @@ vi.mock('@/utils/graphTraversalUtil', () => ({
   ) => node._testExecutionId ?? String(node.id)
 }))
 
+vi.mock('@/platform/assets/services/assetService', async () => {
+  const actual = await vi.importActual<typeof AssetServiceModule>(
+    '@/platform/assets/services/assetService'
+  )
+
+  return {
+    ...actual,
+    assetService: {
+      ...actual.assetService,
+      checkAssetHash: mockCheckAssetHash
+    }
+  }
+})
+
 /** Helper: create a combo widget mock */
 function makeComboWidget(
   name: string,
@@ -43,7 +62,7 @@ function makeComboWidget(
 }
 
 /** Helper: create an asset widget mock (Cloud combo replacement) */
-function makeAssetWidget(name: string, value: string): IBaseWidget {
+function makeAssetWidget(name: string, value: unknown): IBaseWidget {
   return fromAny<IBaseWidget, unknown>({
     type: 'asset',
     name,
@@ -551,6 +570,16 @@ describe('scanAllModelCandidates', () => {
     expect(result).toEqual([])
   })
 
+  it('should skip asset widgets with non-string values', () => {
+    const graph = makeGraph([
+      makeNode(1, 'SomeNode', [makeAssetWidget('ckpt_name', 123)])
+    ])
+
+    const result = scanAllModelCandidates(graph, noAssetSupport)
+
+    expect(result).toEqual([])
+  })
+
   it('should scan both combo and asset widgets on the same node', () => {
     const graph = makeGraph([
       makeNode(1, 'DualLoaderNode', [
@@ -1411,6 +1440,7 @@ function makeAssetCandidate(
 describe('verifyAssetSupportedCandidates', () => {
   beforeEach(() => {
     vi.clearAllMocks()
+    mockCheckAssetHash.mockResolvedValue('missing')
     mockIsModelLoading.mockReturnValue(false)
     mockHasMore.mockReturnValue(false)
     mockGetAssets.mockReturnValue([])
@@ -1428,6 +1458,125 @@ describe('verifyAssetSupportedCandidates', () => {
     )
   })
 
+  it('should resolve isMissing=false when the blake3 hash endpoint finds the asset', async () => {
+    const hash =
+      '1111111111111111111111111111111111111111111111111111111111111111'
+    const candidates = [
+      makeAssetCandidate('model.safetensors', {
+        hash,
+        hashType: 'blake3'
+      })
+    ]
+    mockCheckAssetHash.mockResolvedValue('exists')
+
+    await verifyAssetSupportedCandidates(candidates)
+
+    expect(candidates[0].isMissing).toBe(false)
+    expect(mockCheckAssetHash).toHaveBeenCalledWith(`blake3:${hash}`, undefined)
+    expect(mockUpdateModelsForNodeType).not.toHaveBeenCalled()
+  })
+
+  it('should fall back to asset store matching when the blake3 hash is not found', async () => {
+    const hash =
+      '2222222222222222222222222222222222222222222222222222222222222222'
+    const candidates = [
+      makeAssetCandidate('my_model.safetensors', {
+        hash,
+        hashType: 'blake3'
+      })
+    ]
+    mockCheckAssetHash.mockResolvedValue('missing')
+    mockGetAssets.mockReturnValue([
+      {
+        id: '1',
+        name: 'my_model.safetensors',
+        asset_hash: null,
+        metadata: { filename: 'my_model.safetensors' }
+      }
+    ])
+
+    await verifyAssetSupportedCandidates(candidates)
+
+    expect(candidates[0].isMissing).toBe(false)
+    expect(mockUpdateModelsForNodeType).toHaveBeenCalledWith(
+      'CheckpointLoaderSimple'
+    )
+  })
+
+  it('should fall back to asset store matching when hash verification fails', async () => {
+    const warn = vi.spyOn(console, 'warn').mockImplementation(() => {})
+    const hash =
+      '3333333333333333333333333333333333333333333333333333333333333333'
+    const candidates = [
+      makeAssetCandidate('my_model.safetensors', {
+        hash,
+        hashType: 'blake3'
+      })
+    ]
+    mockCheckAssetHash.mockRejectedValue(new Error('network failed'))
+    mockGetAssets.mockReturnValue([
+      {
+        id: '1',
+        name: 'my_model.safetensors',
+        asset_hash: null,
+        metadata: { filename: 'my_model.safetensors' }
+      }
+    ])
+
+    await verifyAssetSupportedCandidates(candidates)
+
+    expect(candidates[0].isMissing).toBe(false)
+    expect(mockUpdateModelsForNodeType).toHaveBeenCalledWith(
+      'CheckpointLoaderSimple'
+    )
+    expect(warn).toHaveBeenCalledOnce()
+    warn.mockRestore()
+  })
+
+  it('should skip malformed blake3 hashes and use asset store matching', async () => {
+    const candidates = [
+      makeAssetCandidate('my_model.safetensors', {
+        hash: 'abc123',
+        hashType: 'blake3'
+      })
+    ]
+    mockGetAssets.mockReturnValue([
+      {
+        id: '1',
+        name: 'my_model.safetensors',
+        asset_hash: null,
+        metadata: { filename: 'my_model.safetensors' }
+      }
+    ])
+
+    await verifyAssetSupportedCandidates(candidates)
+
+    expect(mockCheckAssetHash).not.toHaveBeenCalled()
+    expect(candidates[0].isMissing).toBe(false)
+  })
+
+  it('should not warn or fall back when hash verification is aborted', async () => {
+    const warn = vi.spyOn(console, 'warn').mockImplementation(() => {})
+    const abortError = new Error('aborted')
+    abortError.name = 'AbortError'
+    const hash =
+      '4444444444444444444444444444444444444444444444444444444444444444'
+    const candidates = [
+      makeAssetCandidate('my_model.safetensors', {
+        hash,
+        hashType: 'blake3'
+      })
+    ]
+    mockCheckAssetHash.mockRejectedValue(abortError)
+
+    await verifyAssetSupportedCandidates(candidates)
+
+    expect(candidates[0].isMissing).toBeUndefined()
+    expect(mockUpdateModelsForNodeType).not.toHaveBeenCalled()
+    expect(warn).not.toHaveBeenCalled()
+    warn.mockRestore()
+  })
+
   it('should resolve isMissing=false when asset with matching hash exists', async () => {
     const candidates = [
       makeAssetCandidate('model.safetensors', {
@@ -1442,6 +1591,7 @@ describe('verifyAssetSupportedCandidates', () => {
     await verifyAssetSupportedCandidates(candidates)
 
     expect(candidates[0].isMissing).toBe(false)
+    expect(mockCheckAssetHash).not.toHaveBeenCalled()
   })
 
   it('should resolve isMissing=false when asset with matching filename exists', async () => {
diff --git a/src/platform/missingModel/missingModelScan.ts b/src/platform/missingModel/missingModelScan.ts
index 11302154bc9..bef803112a5 100644
--- a/src/platform/missingModel/missingModelScan.ts
+++ b/src/platform/missingModel/missingModelScan.ts
@@ -24,6 +24,11 @@ import {
 } from '@/utils/graphTraversalUtil'
 import { LGraphEventMode } from '@/lib/litegraph/src/types/globalEnums'
 import { resolveComboValues } from '@/utils/litegraphUtil'
+import type { AssetHashStatus } from '@/platform/assets/services/assetService'
+import {
+  assetService,
+  toBlake3AssetHash
+} from '@/platform/assets/services/assetService'
 
 export type MissingModelWorkflowData = FlattenableWorkflowGraph & {
   models?: ModelFile[]
@@ -177,7 +182,7 @@ function scanAssetWidget(
   getDirectory: ((nodeType: string) => string | undefined) | undefined
 ): MissingModelCandidate | null {
   const value = widget.value
-  if (!value.trim()) return null
+  if (typeof value !== 'string' || !value.trim()) return null
   if (!isModelFileName(value)) return null
 
   return {
@@ -445,20 +450,68 @@ interface AssetVerifier {
   getAssets: (nodeType: string) => AssetItem[] | undefined
 }
 
+type AssetHashVerifier = (
+  assetHash: string,
+  signal?: AbortSignal
+) => Promise<AssetHashStatus>
+
 export async function verifyAssetSupportedCandidates(
   candidates: MissingModelCandidate[],
   signal?: AbortSignal,
-  assetsStore?: AssetVerifier
+  assetsStore?: AssetVerifier,
+  checkAssetHash: AssetHashVerifier = assetService.checkAssetHash
 ): Promise<void> {
   if (signal?.aborted) return
 
+  const pendingCandidates = candidates.filter(
+    (c) => c.isAssetSupported && c.isMissing === undefined
+  )
+  if (pendingCandidates.length === 0) return
+
   const pendingNodeTypes = new Set<string>()
-  for (const c of candidates) {
-    if (c.isAssetSupported && c.isMissing === undefined) {
-      pendingNodeTypes.add(c.nodeType)
+  const candidatesByHash = new Map<string, MissingModelCandidate[]>()
+
+  for (const candidate of pendingCandidates) {
+    const assetHash = getBlake3AssetHash(candidate)
+    if (!assetHash) {
+      pendingNodeTypes.add(candidate.nodeType)
+      continue
     }
+
+    const hashCandidates = candidatesByHash.get(assetHash)
+    if (hashCandidates) hashCandidates.push(candidate)
+    else candidatesByHash.set(assetHash, [candidate])
   }
 
+  await Promise.all(
+    Array.from(candidatesByHash, async ([assetHash, hashCandidates]) => {
+      if (signal?.aborted) return
+
+      try {
+        const status = await checkAssetHash(assetHash, signal)
+        if (signal?.aborted) return
+
+        if (status === 'exists') {
+          for (const candidate of hashCandidates) {
+            candidate.isMissing = false
+          }
+          return
+        }
+      } catch (err) {
+        if (signal?.aborted || isAbortError(err)) return
+        console.warn(
+          '[Missing Model Pipeline] Failed to verify asset hash:',
+          err
+        )
+      }
+
+      for (const candidate of hashCandidates) {
+        pendingNodeTypes.add(candidate.nodeType)
+      }
+    })
+  )
+
+  if (signal?.aborted) return
   if (pendingNodeTypes.size === 0) return
 
   const store =
@@ -491,6 +544,20 @@ export async function verifyAssetSupportedCandidates(
   }
 }
 
+function getBlake3AssetHash(candidate: MissingModelCandidate): string | null {
+  if (candidate.hashType?.toLowerCase() !== 'blake3') return null
+  return toBlake3AssetHash(candidate.hash)
+}
+
+function isAbortError(err: unknown): boolean {
+  return (
+    typeof err === 'object' &&
+    err !== null &&
+    'name' in err &&
+    err.name === 'AbortError'
+  )
+}
+
 function normalizePath(path: string): string {
   return path.replace(/\\/g, '/')
 }
diff --git a/src/stores/assetsStore.test.ts b/src/stores/assetsStore.test.ts
index 0a8cb0a75ff..6f606061084 100644
--- a/src/stores/assetsStore.test.ts
+++ b/src/stores/assetsStore.test.ts
@@ -24,7 +24,12 @@ vi.mock('@/scripts/api', () => ({
 vi.mock('@/platform/assets/services/assetService', () => ({
   assetService: {
     getAssetsByTag: vi.fn(),
-    getAssetsForNodeType: vi.fn()
+    getAllAssetsByTag: vi.fn(),
+    getAssetsForNodeType: vi.fn(),
+    invalidateInputAssetsIncludingPublic: vi.fn(),
+    updateAsset: vi.fn(),
+    addAssetTags: vi.fn(),
+    removeAssetTags: vi.fn()
   }
 }))
 
@@ -1034,4 +1039,234 @@ describe('assetsStore - Model Assets Cache (Cloud)', () => {
       ).not.toThrow()
     })
   })
+
+  describe('updateAssetMetadata optimistic cache', () => {
+    it('reflects the server response in the cache after a successful update', async () => {
+      const store = useAssetsStore()
+      const original = {
+        ...createMockAsset('opt-1'),
+        user_metadata: { note: 'before' } as Record<string, unknown>
+      }
+
+      vi.mocked(assetService.getAssetsForNodeType).mockResolvedValueOnce([
+        original
+      ])
+      await store.updateModelsForNodeType('CheckpointLoaderSimple')
+
+      const serverResponse = {
+        ...original,
+        user_metadata: { note: 'server-confirmed' }
+      }
+      vi.mocked(assetService.updateAsset).mockResolvedValueOnce(serverResponse)
+
+      await store.updateAssetMetadata(
+        original,
+        { note: 'optimistic' },
+        'CheckpointLoaderSimple'
+      )
+
+      const cached = store.getAssets('CheckpointLoaderSimple')[0]
+      expect(cached.user_metadata).toEqual({ note: 'server-confirmed' })
+    })
+
+    it('rolls back to the original metadata when the server rejects', async () => {
+      const store = useAssetsStore()
+      const original = {
+        ...createMockAsset('opt-2'),
+        user_metadata: { note: 'before' } as Record<string, unknown>
+      }
+
+      vi.mocked(assetService.getAssetsForNodeType).mockResolvedValueOnce([
+        original
+      ])
+      await store.updateModelsForNodeType('CheckpointLoaderSimple')
+
+      vi.mocked(assetService.updateAsset).mockRejectedValueOnce(
+        new Error('500 Internal Error')
+      )
+      const consoleSpy = vi.spyOn(console, 'error').mockImplementation(() => {})
+
+      await store.updateAssetMetadata(
+        original,
+        { note: 'will be reverted' },
+        'CheckpointLoaderSimple'
+      )
+
+      const cached = store.getAssets('CheckpointLoaderSimple')[0]
+      expect(cached.user_metadata).toEqual({ note: 'before' })
+      consoleSpy.mockRestore()
+    })
+  })
+
+  describe('updateAssetTags diff-based dispatch', () => {
+    it('skips both endpoints and does not mutate the cache when tags are unchanged', async () => {
+      const store = useAssetsStore()
+      const asset = createMockAsset('tags-noop', ['models', 'checkpoints'])
+
+      vi.mocked(assetService.getAssetsForNodeType).mockResolvedValueOnce([
+        asset
+      ])
+      await store.updateModelsForNodeType('CheckpointLoaderSimple')
+
+      await store.updateAssetTags(
+        asset,
+        ['checkpoints', 'models'],
+        'CheckpointLoaderSimple'
+      )
+
+      expect(vi.mocked(assetService.addAssetTags)).not.toHaveBeenCalled()
+      expect(vi.mocked(assetService.removeAssetTags)).not.toHaveBeenCalled()
+    })
+
+    it('calls only the add endpoint when there are no tags to remove', async () => {
+      const store = useAssetsStore()
+      const asset = createMockAsset('tags-add-only', ['models'])
+
+      vi.mocked(assetService.getAssetsForNodeType).mockResolvedValueOnce([
+        asset
+      ])
+      await store.updateModelsForNodeType('CheckpointLoaderSimple')
+
+      vi.mocked(assetService.addAssetTags).mockResolvedValueOnce({
+        added: ['featured'],
+        total_tags: ['models', 'featured']
+      })
+
+      await store.updateAssetTags(
+        asset,
+        ['models', 'featured'],
+        'CheckpointLoaderSimple'
+      )
+
+      expect(vi.mocked(assetService.addAssetTags)).toHaveBeenCalledWith(
+        'tags-add-only',
+        ['featured']
+      )
+      expect(vi.mocked(assetService.removeAssetTags)).not.toHaveBeenCalled()
+      expect(store.getAssets('CheckpointLoaderSimple')[0].tags).toEqual([
+        'models',
+        'featured'
+      ])
+    })
+
+    it('rolls back the cache when removeAssetTags succeeds but addAssetTags rejects', async () => {
+      // Documents the known recovery gap on partial-failure during a
+      // "change category" mutation: remove succeeds server-side, add fails,
+      // and the cache is restored to the original tags. The server now has
+      // the old category tag removed, so the cache and backend diverge until
+      // the next refetch — surface that gap here rather than papering over it.
+      const store = useAssetsStore()
+      const asset = createMockAsset('tags-partial-fail', ['models', 'loras'])
+
+      vi.mocked(assetService.getAssetsForNodeType).mockResolvedValueOnce([
+        asset
+      ])
+      await store.updateModelsForNodeType('LoraLoader')
+
+      vi.mocked(assetService.removeAssetTags).mockResolvedValueOnce({
+        removed: ['loras'],
+        total_tags: ['models']
+      })
+      vi.mocked(assetService.addAssetTags).mockRejectedValueOnce(
+        new Error('500 add failed')
+      )
+      const consoleSpy = vi.spyOn(console, 'error').mockImplementation(() => {})
+
+      await store.updateAssetTags(
+        asset,
+        ['models', 'checkpoints'],
+        'LoraLoader'
+      )
+
+      expect(vi.mocked(assetService.removeAssetTags)).toHaveBeenCalledWith(
+        'tags-partial-fail',
+        ['loras']
+      )
+      expect(vi.mocked(assetService.addAssetTags)).toHaveBeenCalledWith(
+        'tags-partial-fail',
+        ['checkpoints']
+      )
+      // Cache restored to original tags even though the server has already
+      // removed 'loras'. This codifies a known divergence — fix the recovery
+      // semantics in updateAssetTags to address it (e.g. invalidate the
+      // category cache, or reconcile against the last confirmed total_tags).
+      expect(store.getAssets('LoraLoader')[0].tags).toEqual(['models', 'loras'])
+      consoleSpy.mockRestore()
+    })
+  })
+})
+
+describe('assetsStore - Deletion State and Input Mapping', () => {
+  beforeEach(() => {
+    setActivePinia(createTestingPinia({ stubActions: false }))
+    vi.clearAllMocks()
+  })
+
+  describe('setAssetDeleting / isAssetDeleting', () => {
+    it('tracks per-asset deletion state and clears it on flip', () => {
+      const store = useAssetsStore()
+
+      expect(store.isAssetDeleting('asset-A')).toBe(false)
+
+      store.setAssetDeleting('asset-A', true)
+      expect(store.isAssetDeleting('asset-A')).toBe(true)
+      expect(store.isAssetDeleting('asset-B')).toBe(false)
+
+      store.setAssetDeleting('asset-A', false)
+      expect(store.isAssetDeleting('asset-A')).toBe(false)
+    })
+  })
+
+  describe('getInputName', () => {
+    it('resolves a hashed filename to the human-readable name when the input asset is in the cache', async () => {
+      mockIsCloud.value = true
+      try {
+        setActivePinia(createTestingPinia({ stubActions: false }))
+        const store = useAssetsStore()
+
+        vi.mocked(assetService.getAssetsByTag).mockResolvedValueOnce([
+          {
+            id: 'input-1',
+            name: 'cute-puppy.png',
+            asset_hash: 'abc123def.png',
+            tags: ['input']
+          }
+        ])
+        await store.updateInputs()
+
+        expect(store.getInputName('abc123def.png')).toBe('cute-puppy.png')
+      } finally {
+        mockIsCloud.value = false
+      }
+    })
+
+    it('falls back to the original filename when the input asset is not cached', () => {
+      const store = useAssetsStore()
+      expect(store.getInputName('unknown.png')).toBe('unknown.png')
+    })
+  })
+
+  describe('updateInputs cloud routing', () => {
+    it('reads from assetService.getAssetsByTag with limit 100 when isCloud is true', async () => {
+      mockIsCloud.value = true
+      try {
+        setActivePinia(createTestingPinia({ stubActions: false }))
+        const store = useAssetsStore()
+
+        vi.mocked(assetService.getAssetsByTag).mockResolvedValueOnce([])
+        await store.updateInputs()
+
+        expect(vi.mocked(assetService.getAssetsByTag)).toHaveBeenCalledWith(
+          'input',
+          false,
+          { limit: 100 }
+        )
+        expect(
+          assetService.invalidateInputAssetsIncludingPublic
+        ).toHaveBeenCalledOnce()
+      } finally {
+        mockIsCloud.value = false
+      }
+    })
+  })
 })
diff --git a/src/stores/assetsStore.ts b/src/stores/assetsStore.ts
index df655a3b3bd..34f9910e94a 100644
--- a/src/stores/assetsStore.ts
+++ b/src/stores/assetsStore.ts
@@ -123,7 +123,7 @@ export const useAssetsStore = defineStore('assets', () => {
     state: inputAssets,
     isLoading: inputLoading,
     error: inputError,
-    execute: updateInputs
+    execute: executeUpdateInputs
   } = useAsyncState(fetchInputFiles, [], {
     immediate: false,
     resetOnExecute: false,
@@ -132,6 +132,12 @@ export const useAssetsStore = defineStore('assets', () => {
     }
   })
 
+  const updateInputs = async () => {
+    const result = await executeUpdateInputs()
+    assetService.invalidateInputAssetsIncludingPublic()
+    return result
+  }
+
   /**
    * Fetch history assets with pagination support
    * @param loadMore - true for pagination (append), false for initial load (replace)