diff --git a/ui/src/features/asset-picker/remoteCatalog.ts b/ui/src/features/asset-picker/remoteCatalog.ts
index b668b92f..88542d75 100644
--- a/ui/src/features/asset-picker/remoteCatalog.ts
+++ b/ui/src/features/asset-picker/remoteCatalog.ts
@@ -14,6 +14,14 @@ import type { AssetConstraints, CatalogSort, PickerItem } from './types.ts'
 
 const DEFAULT_KINDS: AssetKind[] = ['image', 'video', 'audio', 'model3d', 'scene']
 
+export function remoteCatalogFilterKey(
+  kind: AssetKind | '',
+  constraints?: AssetConstraints,
+): string {
+  if (kind) return kind
+  return (constraints?.kinds || []).join(',')
+}
+
 export function useRemoteCatalogPage(input: {
   enabled: boolean
   workspaceId?: string
@@ -28,10 +36,11 @@ export function useRemoteCatalogPage(input: {
   const [items, setItems] = useState<PickerItem[]>([])
   const [total, setTotal] = useState(0)
   const [status, setStatus] = useState<'ready' | 'loading' | 'error'>(input.enabled ? 'loading' : 'ready')
+  const kindsKey = remoteCatalogFilterKey(input.kind, input.constraints)
   useEffect(() => () => session.current.dispose(), [])
   useEffect(() => {
     if (!input.enabled || !input.workspaceId) return
-    const kinds = input.kind ? [input.kind] : input.constraints?.kinds
+    const kinds = kindsKey ? kindsKey.split(',') as AssetKind[] : undefined
     void session.current.run({
       workspace: input.workspaceId,
       search: input.query.trim() || undefined,
@@ -45,7 +54,7 @@ export function useRemoteCatalogPage(input: {
       setTotal(result.total)
       setStatus('ready')
     }).catch(() => setStatus('error'))
-  }, [input.constraints, input.enabled, input.kind, input.page, input.query, input.retry, input.sort, input.workspaceId])
+  }, [input.enabled, input.page, input.query, input.retry, input.sort, input.workspaceId, kindsKey])
   return { items, total, status }
 }
 
diff --git a/ui/tests/assetExplorerRemote.test.tsx b/ui/tests/assetExplorerRemote.test.tsx
index 55fe9ffa..12ecabef 100644
--- a/ui/tests/assetExplorerRemote.test.tsx
+++ b/ui/tests/assetExplorerRemote.test.tsx
@@ -87,3 +87,50 @@ test('remote explorer pages the catalog at 24 and can find a hit past the first
     cleanup()
   }
 })
+
+test('remote explorer does not refetch when the parent rebuilds the same constraints object', { concurrency: false }, async () => {
+  const { render, screen, waitFor, cleanup } = await import('@testing-library/react')
+  const { AssetExplorerDialog } = await import('../src/components/common/AssetExplorerDialog.tsx')
+  const calls: string[] = []
+  const originalFetch = globalThis.fetch
+  globalThis.fetch = (async (input: RequestInfo | URL) => {
+    calls.push(String(input))
+    return new Response(JSON.stringify({
+      total: 1,
+      assets: [catalogAsset(0, 'clip.mp4')],
+    }), { status: 200, headers: { 'Content-Type': 'application/json' } })
+  }) as typeof fetch
+  try {
+    const view = render(
+      <AssetExplorerDialog
+        open
+        remote
+        workspaceId="film"
+        title="Library"
+        items={[]}
+        constraints={{ kinds: ['video'], maxCount: 1, optional: false }}
+        onClose={() => undefined}
+        onChoose={() => undefined}
+      />,
+    )
+    await waitFor(() => assert.ok(screen.getByTitle('clip.mp4')))
+    assert.equal(calls.length, 1)
+    view.rerender(
+      <AssetExplorerDialog
+        open
+        remote
+        workspaceId="film"
+        title="Library"
+        items={[]}
+        constraints={{ kinds: ['video'], maxCount: 1, optional: false }}
+        onClose={() => undefined}
+        onChoose={() => undefined}
+      />,
+    )
+    await waitFor(() => assert.ok(screen.getByTitle('clip.mp4')))
+    assert.equal(calls.length, 1)
+  } finally {
+    globalThis.fetch = originalFetch
+    cleanup()
+  }
+})
diff --git a/ui/tests/remoteCatalog.test.ts b/ui/tests/remoteCatalog.test.ts
index 8f497268..f4b5f260 100644
--- a/ui/tests/remoteCatalog.test.ts
+++ b/ui/tests/remoteCatalog.test.ts
@@ -6,6 +6,7 @@ import {
   explorerCanConfirm,
   explorerListModel,
   explorerToolbarKinds,
+  remoteCatalogFilterKey,
   remotePageCount,
   resolveExplorerSelection,
 } from '../src/features/asset-picker/remoteCatalog.ts'
@@ -39,6 +40,15 @@ function outputFrom(item: PickerItem): ApiOutput {
   }
 }
 
+test('catalog filter key ignores constraints object identity', () => {
+  const first = { kinds: ['video'] as const, maxCount: 1, optional: false }
+  const second = { kinds: ['video'] as const, maxCount: 1, optional: false }
+  assert.equal(remoteCatalogFilterKey('', first), 'video')
+  assert.equal(remoteCatalogFilterKey('', second), remoteCatalogFilterKey('', first))
+  assert.equal(remoteCatalogFilterKey('audio', first), 'audio')
+  assert.equal(remoteCatalogFilterKey('', undefined), '')
+})
+
 test('remote pages are 24 wide and never collapse to zero', () => {
   assert.equal(ASSET_PICKER_PAGE_SIZE, 24)
   assert.equal(remotePageCount(0), 1)