diff --git a/ui/src/features/studio/actions.ts b/ui/src/features/studio/actions.ts
index a6887a0d..d5429eab 100644
--- a/ui/src/features/studio/actions.ts
+++ b/ui/src/features/studio/actions.ts
@@ -13,6 +13,7 @@ import type {
   PrepareVideoCommand,
   QueueSfxPackCommand,
 } from './commands'
+import { newSfxGenerationIntentId } from '../../api/sfxGenerationCommands'
 import {
   generationProvenancePayload,
   type GenerationSubmissionContext,
@@ -127,6 +128,13 @@ export async function selectAudioModel(
   return selectedModel?.name || selected
 }
 
+function sfxClipSubmissionContext(
+  context?: GenerationSubmissionContext,
+): GenerationSubmissionContext | undefined {
+  if (!context) return undefined
+  return { ...context, commandId: newSfxGenerationIntentId() }
+}
+
 export async function queueSfxPack(
   action: QueueSfxPackCommand,
   context?: GenerationSubmissionContext,
@@ -140,7 +148,10 @@ export async function queueSfxPack(
   for (const clip of action.clips) {
     applySfxClip(clip, negative)
     const before = new Set(useStore.getState().jobs)
-    await useStore.getState().startGeneration(undefined, context)
+    // Wizard issues one commandId for the pack capability. Reusing it as
+    // every clip's generation.sfx intent_id 409s distinct prompts and
+    // silently replays the first receipt when prompts match.
+    await useStore.getState().startGeneration(undefined, sfxClipSubmissionContext(context))
     const created = useStore.getState().jobs.find(job => !before.has(job))
     if (!created) throw new Error(`HocusPocus no encoló el efecto ${clip.name}.`)
     if (created.status === 'failed') throw new Error(created.error || created.message || `Falló ${clip.name}.`)
diff --git a/ui/tests/studioSfxAction.test.mjs b/ui/tests/studioSfxAction.test.mjs
index 01a33f5c..4af0e55a 100644
--- a/ui/tests/studioSfxAction.test.mjs
+++ b/ui/tests/studioSfxAction.test.mjs
@@ -9,7 +9,7 @@ window.matchMedia = () => ({ matches: false })
 
 const { parseAgentTurn } = await import('../src/features/agent/agentActions.ts')
 const { getCapability } = await import('../src/features/agent/capabilityRegistry.ts')
-const { prepareAudio } = await import('../src/features/studio/actions.ts')
+const { prepareAudio, queueSfxPack } = await import('../src/features/studio/actions.ts')
 const { useStore } = await import('../src/stores/useStore.ts')
 const guide = '/api/v1/file/guide.mp4?workspace=source'
 const literal = '  Rain on a tin roof.\nKeep this exact.  '
@@ -145,3 +145,31 @@ for (const settleWithFailure of [false, true]) {
     }
   })
 }
+
+test('queue_sfx_pack mints a unique generation.sfx intent for each clip', async () => {
+  await withStudio(async () => {
+    const seen = []
+    useStore.setState({
+      jobs: [],
+      loadModelOptions: async () => undefined,
+      startGeneration: async (_scheduled, context) => {
+        seen.push(context?.commandId)
+        const job = { id: `job-${seen.length}`, status: 'queued' }
+        useStore.setState(state => ({ jobs: [job, ...state.jobs] }))
+      },
+    })
+    await queueSfxPack({
+      type: 'queue_sfx_pack',
+      confirm: true,
+      clips: [
+        { name: 'hit', prompt: 'impact', durationSeconds: 2 },
+        { name: 'whoosh', prompt: 'whoosh', durationSeconds: 3 },
+        { name: 'hit-again', prompt: 'impact', durationSeconds: 2 },
+      ],
+      modelType: 'mmaudio_v2',
+    }, { actor: 'wizard', capability: 'queue_sfx_pack', commandId: 'pack-intent' })
+    assert.equal(seen.length, 3)
+    assert.equal(new Set(seen).size, 3)
+    assert.ok(seen.every(id => typeof id === 'string' && id.length > 0 && id !== 'pack-intent'))
+  })
+})