diff --git a/ui/src/features/agent/agentActions.ts b/ui/src/features/agent/agentActions.ts
index c1441a49..64cc0d02 100644
--- a/ui/src/features/agent/agentActions.ts
+++ b/ui/src/features/agent/agentActions.ts
@@ -3219,11 +3219,11 @@ export async function executeAgentActions(
         const outcome = await defaultApplicationAdapters.queue.retry(action.taskId, action.confirm)
         results.push({ action, ok: true, message: outcome.message, report: outcome.report })
       } else if (action.type === 'select_workspace') {
-        const { selectAgentWorkspace } = await import('./workspaceActions')
-        results.push({ action, ok: true, message: await selectAgentWorkspace(action.workspaceName) })
+        const outcome = await defaultApplicationAdapters.workspace.select(action)
+        results.push({ action, ok: true, message: outcome.message, report: outcome.report })
       } else if (action.type === 'create_workspace') {
-        const { createAgentWorkspace } = await import('./workspaceActions')
-        results.push({ action, ok: true, message: await createAgentWorkspace(action.workspaceName) })
+        const outcome = await defaultApplicationAdapters.workspace.create(action)
+        results.push({ action, ok: true, message: outcome.message, report: outcome.report })
       } else {
         throw new Error(`No hay ejecutor para ${action.type}.`)
       }
diff --git a/ui/src/features/agent/applicationAdapters.ts b/ui/src/features/agent/applicationAdapters.ts
index 2f9febe5..87851319 100644
--- a/ui/src/features/agent/applicationAdapters.ts
+++ b/ui/src/features/agent/applicationAdapters.ts
@@ -4,7 +4,7 @@ import { rememberedCharacterKitLibrary } from '../characters/session'
 import type { SeriesAssemblyJob } from '../series/assemblyContract'
 import type { SeriesJobStatus } from '../series/types'
 import type { MediaFilter } from '../../types'
-import type { AgentApply3dRhythmAction, AgentApplySeriesPlanAction, AgentApplyStoryProposalAction, AgentApproveStorySectionAction, AgentApproveStoryVisualsAction, AgentAssembleSeriesEpisodeAction, AgentCommitSeriesCanonAction, AgentConfigureStorySongAction, AgentCreateComicAction, AgentCreateSeriesEpisodeAction, AgentCreateStoryAction, AgentGenerateComicAction, AgentGenerateSeriesPlanAction, AgentGenerateStorySectionAction, AgentGenerateStorySongAction, AgentGenerateStoryVisualsAction, AgentRenderSeriesShotsAction, AgentReviewSeriesAttemptsAction, AgentStageStoryComicAction, AgentStartDirectorProductionAction, AgentStageStoryMusicVideoAction, AgentStageStoryVideoAction, AgentUpdateSeriesEpisodeAction, AgentUpdateStoryAction } from './agentActions'
+import type { AgentApply3dRhythmAction, AgentApplySeriesPlanAction, AgentApplyStoryProposalAction, AgentApproveStorySectionAction, AgentApproveStoryVisualsAction, AgentAssembleSeriesEpisodeAction, AgentCommitSeriesCanonAction, AgentConfigureStorySongAction, AgentCreateComicAction, AgentCreateSeriesEpisodeAction, AgentCreateStoryAction, AgentCreateWorkspaceAction, AgentGenerateComicAction, AgentGenerateSeriesPlanAction, AgentGenerateStorySectionAction, AgentGenerateStorySongAction, AgentGenerateStoryVisualsAction, AgentRenderSeriesShotsAction, AgentReviewSeriesAttemptsAction, AgentSelectWorkspaceAction, AgentStageStoryComicAction, AgentStartDirectorProductionAction, AgentStageStoryMusicVideoAction, AgentStageStoryVideoAction, AgentUpdateSeriesEpisodeAction, AgentUpdateStoryAction } from './agentActions'
 import {
   executionKey,
   executionReport,
@@ -124,6 +124,10 @@ export interface QueueAdapter {
   resume(taskId: string, confirm: boolean): Promise<AdapterOutcome>
   retry(taskId: string, confirm: boolean): Promise<AdapterOutcome>
 }
+export interface WorkspaceAdapter {
+  select(action: AgentSelectWorkspaceAction): Promise<AdapterOutcome>
+  create(action: AgentCreateWorkspaceAction): Promise<AdapterOutcome>
+}
 
 export interface Video3DAdapter {
   open(animate?: boolean): Promise<AdapterOutcome>
@@ -141,6 +145,7 @@ export interface WizardApplicationAdapters {
   videoEditor: VideoEditorAdapter
   characterKit: CharacterKitAdapter
   queue: QueueAdapter
+  workspace: WorkspaceAdapter
   openTab(tab: AgentTab): Promise<AdapterOutcome>
 }
 
@@ -668,6 +673,16 @@ export function createDefaultApplicationAdapters(): WizardApplicationAdapters {
       return presentQueueSliceResult(await retry({ taskId, confirm: true }))
     },
   }
+  adapters.workspace = {
+    async select(action) {
+      const { selectWorkspace } = await import('../workspaces/adapters')
+      return presentWorkspaceSliceResult(await selectWorkspace({ workspaceName: action.workspaceName }))
+    },
+    async create(action) {
+      const { createWorkspace } = await import('../workspaces/adapters')
+      return presentWorkspaceSliceResult(await createWorkspace({ workspaceName: action.workspaceName }))
+    },
+  }
   adapters.video3d = {
     open: animate => navigate(animate ? 'animate_3d' : 'video_3d'),
     async applyRhythm(action) {
@@ -808,6 +823,17 @@ async function presentQueueSliceResult(result: CommandResult): Promise<AdapterOu
   }
 }
 
+async function presentWorkspaceSliceResult(result: CommandResult): Promise<AdapterOutcome> {
+  const summary = typeof result.artifacts[0]?.metadata?.summary === 'string'
+    ? result.artifacts[0].metadata.summary
+    : 'Workspace listo.'
+  const name = String(result.artifacts[0]?.metadata?.title || result.entities[0]?.id || 'workspace')
+  return {
+    message: summary,
+    target: { kind: 'workspace', id: result.entities[0]?.id || name, title: name },
+  }
+}
+
 async function presentComicSliceResult(result: CommandResult): Promise<AdapterOutcome & { state: 'completed' | 'partial' | 'failed' }> {
   await navigate('comics')
   const meta = result.artifacts[0]?.metadata || {}
diff --git a/ui/src/features/agent/navigationQueueCapabilities.ts b/ui/src/features/agent/navigationQueueCapabilities.ts
index d3f087a3..3e1bc033 100644
--- a/ui/src/features/agent/navigationQueueCapabilities.ts
+++ b/ui/src/features/agent/navigationQueueCapabilities.ts
@@ -18,10 +18,6 @@ import {
   openAgentSeriesSection,
   openAgentStorySection,
 } from './agentUiBus'
-import {
-  createAgentWorkspace,
-  selectAgentWorkspace,
-} from './workspaceActions'
 
 /**
  * The registry owns the concrete implementation of defineCapability. Keeping
@@ -350,11 +346,8 @@ export function registerNavigationQueueCapabilities(
     resolve(raw) { return workspaceName('select_workspace', raw) },
     validate(action) { return action.workspaceName.trim() ? [] : ['workspace name is required'] },
     async prepare(action) { return action },
-    async execute(action) {
-      return {
-        message: await selectAgentWorkspace(action.workspaceName),
-        target: { kind: 'workspace', id: action.workspaceName, title: action.workspaceName },
-      }
+    async execute(action, context) {
+      return context.adapters.workspace.select(action)
     },
     correlate(_action, outcome) { return outcome.target },
     async track(_action, outcome) { return outcome },
@@ -384,11 +377,8 @@ export function registerNavigationQueueCapabilities(
     resolve(raw) { return workspaceName('create_workspace', raw) },
     validate(action) { return action.workspaceName.trim() ? [] : ['workspace name is required'] },
     async prepare(action) { return action },
-    async execute(action) {
-      return {
-        message: await createAgentWorkspace(action.workspaceName),
-        target: { kind: 'workspace', id: action.workspaceName, title: action.workspaceName },
-      }
+    async execute(action, context) {
+      return context.adapters.workspace.create(action)
     },
     correlate(_action, outcome) { return outcome.target },
     async track(_action, outcome) { return outcome },
diff --git a/ui/src/features/workspaces/actions.ts b/ui/src/features/workspaces/actions.ts
index c964ad26..cccd6fcc 100644
--- a/ui/src/features/workspaces/actions.ts
+++ b/ui/src/features/workspaces/actions.ts
@@ -1,15 +1,35 @@
+import { commandResultFromSlice, type CommandResult } from '../../lib/commandContract'
 import * as api from '../../api/client'
 import { useStore } from '../../stores/useStore'
 
 const normalized = (value: string): string => value.trim().toLocaleLowerCase()
 
+function workspaceResult(name: string, message: string): CommandResult {
+  const entity = { kind: 'workspace', id: name, workspaceId: name }
+  return commandResultFromSlice({
+    entity,
+    artifacts: [{
+      id: 'reply',
+      kind: 'document',
+      owner: entity,
+      uri: 'workspace:reply',
+      metadata: { summary: message, title: name },
+    }],
+  })
+}
+
+function summaryOf(result: CommandResult): string {
+  const summary = result.artifacts[0]?.metadata?.summary
+  return typeof summary === 'string' ? summary : 'Workspace listo.'
+}
+
 async function authoritativeWorkspaces() {
   const result = await api.fetchWorkspaces()
   useStore.setState({ workspaces: result.workspaces })
   return result
 }
 
-export async function selectAgentWorkspace(requestedName: string): Promise<string> {
+export async function selectAgentWorkspace(requestedName: string): Promise<CommandResult> {
   if (requestedName === '__uploads__') {
     throw new Error('Uploads es una vista virtual de sólo lectura, no un workspace seleccionable para generar.')
   }
@@ -19,24 +39,30 @@ export async function selectAgentWorkspace(requestedName: string): Promise<strin
     throw new Error(`No existe el workspace “${requestedName}”. Los disponibles son: ${before.workspaces.map(item => item.name).join(', ') || 'ninguno'}.`)
   }
   if (before.active === workspace.name && useStore.getState().activeWorkspace === workspace.name) {
-    return `El workspace “${workspace.name}” ya estaba activo.`
+    return workspaceResult(workspace.name, `El workspace “${workspace.name}” ya estaba activo.`)
   }
   await useStore.getState().switchWorkspace(workspace.name)
   const after = await api.fetchWorkspaces()
   if (after.active !== workspace.name || useStore.getState().activeWorkspace !== workspace.name) {
     throw new Error(`El backend no confirmó el cambio al workspace “${workspace.name}”; no afirmaré que se completó.`)
   }
-  return `He cambiado al workspace “${workspace.name}”. El chat y las siguientes acciones continúan en ese contexto.`
+  return workspaceResult(
+    workspace.name,
+    `He cambiado al workspace “${workspace.name}”. El chat y las siguientes acciones continúan en ese contexto.`,
+  )
 }
 
-export async function createAgentWorkspace(requestedName: string): Promise<string> {
+export async function createAgentWorkspace(requestedName: string): Promise<CommandResult> {
   const name = requestedName.trim()
   if (!name || name === '__uploads__') throw new Error('Ese nombre de workspace no es válido.')
   const before = await authoritativeWorkspaces()
   const existing = before.workspaces.find(item => normalized(item.name) === normalized(name))
   if (existing) {
     const selected = await selectAgentWorkspace(existing.name)
-    return `El workspace “${existing.name}” ya existía. ${selected}`
+    return workspaceResult(
+      existing.name,
+      `El workspace “${existing.name}” ya existía. ${summaryOf(selected)}`,
+    )
   }
   await useStore.getState().createWorkspace(name)
   const after = await api.fetchWorkspaces()
@@ -44,5 +70,8 @@ export async function createAgentWorkspace(requestedName: string): Promise<strin
   if (!created || after.active !== created.name || useStore.getState().activeWorkspace !== created.name) {
     throw new Error(`El backend no confirmó la creación y selección de “${name}”.`)
   }
-  return `He creado y seleccionado el workspace “${created.name}”. El chat continúa aquí y las nuevas generaciones se guardarán en él.`
+  return workspaceResult(
+    created.name,
+    `He creado y seleccionado el workspace “${created.name}”. El chat continúa aquí y las nuevas generaciones se guardarán en él.`,
+  )
 }
diff --git a/ui/src/features/workspaces/adapters.ts b/ui/src/features/workspaces/adapters.ts
index 048db12e..2b132f9b 100644
--- a/ui/src/features/workspaces/adapters.ts
+++ b/ui/src/features/workspaces/adapters.ts
@@ -1,10 +1,10 @@
 import { createAgentWorkspace, selectAgentWorkspace } from './actions'
 import type { CreateWorkspaceCommand, SelectWorkspaceCommand } from './commands'
 
-export async function selectWorkspace(command: SelectWorkspaceCommand): Promise<string> {
+export async function selectWorkspace(command: SelectWorkspaceCommand) {
   return selectAgentWorkspace(command.workspaceName)
 }
 
-export async function createWorkspace(command: CreateWorkspaceCommand): Promise<string> {
+export async function createWorkspace(command: CreateWorkspaceCommand) {
   return createAgentWorkspace(command.workspaceName)
 }
diff --git a/ui/tests/agentCapabilityPorts.test.mjs b/ui/tests/agentCapabilityPorts.test.mjs
index 5c00b5cb..6a4dc2b0 100644
--- a/ui/tests/agentCapabilityPorts.test.mjs
+++ b/ui/tests/agentCapabilityPorts.test.mjs
@@ -42,8 +42,6 @@ const LEGACY_EXECUTE_ALLOWLIST = [
   'start_generation',
   'attach_studio_references',
   'configure_studio_loras',
-  'select_workspace',
-  'create_workspace',
 ]
 
 const AGENT_ACTIONS_IMPORTS = [
@@ -67,7 +65,6 @@ const AGENT_ACTIONS_IMPORTS = [
   './studioGuidance',
   './videoEditorActions',
   './wizardContext',
-  './workspaceActions',
 ]
 
 const LAB_ACTIONS_IMPORTS = [
@@ -216,7 +213,7 @@ test('capabilities execute through adapters except the frozen legacy executors',
       + `added=${JSON.stringify(added)} removed=${JSON.stringify(removed)}`,
   )
   assert.equal(registered.length, 73)
-  assert.equal(legacy.length, 12)
+  assert.equal(legacy.length, 10)
 })
 
 test('agentActions.ts and labActions.ts keep their current module graph until a slice PR shrinks it', () => {
diff --git a/ui/tests/agentContract.test.mjs b/ui/tests/agentContract.test.mjs
index b7c71701..5032e808 100644
--- a/ui/tests/agentContract.test.mjs
+++ b/ui/tests/agentContract.test.mjs
@@ -165,7 +165,7 @@ test('application adapters navigate and verify targets without rendering React',
   try {
     const adapters = createDefaultApplicationAdapters()
     assert.deepEqual(Object.keys(adapters).sort(), [
-      'characterKit', 'comic', 'openTab', 'queue', 'seriesLab', 'storyLab', 'studio', 'video3d', 'videoEditor',
+      'characterKit', 'comic', 'openTab', 'queue', 'seriesLab', 'storyLab', 'studio', 'video3d', 'videoEditor', 'workspace',
     ])
     const story = await adapters.storyLab.open()
     assert.equal(useStore.getState().mediaFilter, 'stories')
diff --git a/ui/tests/navigationQueueCapabilities.test.mjs b/ui/tests/navigationQueueCapabilities.test.mjs
index 1da8a4a5..8ad5e3f2 100644
--- a/ui/tests/navigationQueueCapabilities.test.mjs
+++ b/ui/tests/navigationQueueCapabilities.test.mjs
@@ -132,3 +132,37 @@ test('section capabilities retain the visible lab navigation effect', async () =
   window.removeEventListener('hocuspocus:story-section', onStory)
   window.removeEventListener('hocuspocus:series-section', onSeries)
 })
+
+test('workspace capabilities execute through adapters instead of Agent Mode helpers', async () => {
+  const { registerNavigationQueueCapabilities } = await import('../src/features/agent/navigationQueueCapabilities.ts')
+  const definitions = new Map()
+  registerNavigationQueueCapabilities(definition => {
+    definitions.set(definition.name, definition)
+    return definition
+  })
+  const seen = []
+  const context = {
+    adapters: {
+      workspace: {
+        async select(action) {
+          seen.push(['select', action.workspaceName])
+          return { message: `He cambiado a “${action.workspaceName}”.`, target: { kind: 'workspace', id: action.workspaceName, title: action.workspaceName } }
+        },
+        async create(action) {
+          seen.push(['create', action.workspaceName])
+          return { message: `He creado “${action.workspaceName}”.`, target: { kind: 'workspace', id: action.workspaceName, title: action.workspaceName } }
+        },
+      },
+    },
+  }
+
+  const selected = await definitions.get('select_workspace').execute(
+    { type: 'select_workspace', workspaceName: 'Faro' }, context,
+  )
+  const created = await definitions.get('create_workspace').execute(
+    { type: 'create_workspace', workspaceName: 'Nuevo taller' }, context,
+  )
+  assert.equal(selected.message, 'He cambiado a “Faro”.')
+  assert.equal(created.message, 'He creado “Nuevo taller”.')
+  assert.deepEqual(seen, [['select', 'Faro'], ['create', 'Nuevo taller']])
+})