feat: polish OAuth consent UI and align with workspace switcher design

- Workspace picker is now an inline radio list (matches the cloud
  workspace switcher) instead of a dropdown — uses WorkspaceProfilePic
  avatars so OAuth consent feels native to the cloud app.
- Cap list at max-h-72 with scrollbar-custom so 10+ workspaces stay
  discoverable.
- Resume cloud calls are now relative (same-origin via Vite proxy or
  prod reverse proxy) — fixes the cross-origin cookie loss that would
  bounce the consent challenge back to login.
- Map 400 / 403 / 404 cloud errors to user-facing messages
  (expired / scope_broadening / feature_unavailable).
- Surface registered redirect_uri and RFC 7591 application_type so
  users can verify the loopback destination before granting.

global.d.ts

@@ -5,6 +5,7 @@ declare const __SENTRY_DSN__: string
 declare const __ALGOLIA_APP_ID__: string
 declare const __ALGOLIA_API_KEY__: string
 declare const __USE_PROD_CONFIG__: boolean
+declare const __DEV_SERVER_COMFYUI_URL__: string
 
 interface ImpactQueueFunction {
   (...args: unknown[]): void

scripts/vite-define-shim.ts

@@ -11,6 +11,7 @@ declare global {
   const __ALGOLIA_APP_ID__: string
   const __ALGOLIA_API_KEY__: string
   const __USE_PROD_CONFIG__: boolean
+  const __DEV_SERVER_COMFYUI_URL__: string
   const __DISTRIBUTION__: 'desktop' | 'localhost' | 'cloud'
   const __IS_NIGHTLY__: boolean
 }
@@ -22,6 +23,7 @@ type GlobalWithDefines = typeof globalThis & {
   __ALGOLIA_APP_ID__: string
   __ALGOLIA_API_KEY__: string
   __USE_PROD_CONFIG__: boolean
+  __DEV_SERVER_COMFYUI_URL__: string
   __DISTRIBUTION__: 'desktop' | 'localhost' | 'cloud'
   __IS_NIGHTLY__: boolean
   window?: Record<string, unknown>
@@ -37,6 +39,7 @@ globalWithDefines.__SENTRY_DSN__ = ''
 globalWithDefines.__ALGOLIA_APP_ID__ = ''
 globalWithDefines.__ALGOLIA_API_KEY__ = ''
 globalWithDefines.__USE_PROD_CONFIG__ = false
+globalWithDefines.__DEV_SERVER_COMFYUI_URL__ = ''
 globalWithDefines.__DISTRIBUTION__ = 'localhost'
 globalWithDefines.__IS_NIGHTLY__ = false
 

src/config/comfyApi.test.ts

@@ -0,0 +1,26 @@
+import { describe, expect, it } from 'vitest'
+
+import { getComfyApiBaseUrlForEnvironment } from '@/config/comfyApi'
+
+describe('comfy api config', () => {
+  it('uses same-origin API calls for cloud local development', () => {
+    expect(
+      getComfyApiBaseUrlForEnvironment({
+        isCloudDistribution: true,
+        isDev: true,
+        devServerComfyUIUrl: 'http://127.0.0.1:8188',
+        useProdConfig: false
+      })
+    ).toBe('')
+  })
+
+  it('keeps staging API for non-local staging builds', () => {
+    expect(
+      getComfyApiBaseUrlForEnvironment({
+        isCloudDistribution: true,
+        isDev: false,
+        useProdConfig: false
+      })
+    ).toBe('https://stagingapi.comfy.org')
+  })
+})

src/config/comfyApi.ts

@@ -10,34 +10,68 @@ const STAGING_API_BASE_URL = 'https://stagingapi.comfy.org'
 const PROD_PLATFORM_BASE_URL = 'https://platform.comfy.org'
 const STAGING_PLATFORM_BASE_URL = 'https://stagingplatform.comfy.org'
 
-const BUILD_TIME_API_BASE_URL = __USE_PROD_CONFIG__
-  ? PROD_API_BASE_URL
-  : STAGING_API_BASE_URL
+type ComfyApiEnvironment = {
+  isCloudDistribution: boolean
+  isDev: boolean
+  devServerComfyUIUrl?: string
+  useProdConfig: boolean
+}
 
-const BUILD_TIME_PLATFORM_BASE_URL = __USE_PROD_CONFIG__
-  ? PROD_PLATFORM_BASE_URL
-  : STAGING_PLATFORM_BASE_URL
+const localOriginPattern =
+  /^https?:\/\/(localhost|127\.0\.0\.1|\[::1\])(?::\d+)?(?:\/|$)/
 
-export function getComfyApiBaseUrl(): string {
-  if (!isCloud) {
-    return BUILD_TIME_API_BASE_URL
+function buildTimeApiBaseUrl(useProdConfig: boolean): string {
+  return useProdConfig ? PROD_API_BASE_URL : STAGING_API_BASE_URL
+}
+
+function buildTimePlatformBaseUrl(useProdConfig: boolean): string {
+  return useProdConfig ? PROD_PLATFORM_BASE_URL : STAGING_PLATFORM_BASE_URL
+}
+
+function isLocalDevServer(url?: string): boolean {
+  return url ? localOriginPattern.test(url) : false
+}
+
+export function getComfyApiBaseUrlForEnvironment({
+  isCloudDistribution,
+  isDev,
+  devServerComfyUIUrl,
+  useProdConfig
+}: ComfyApiEnvironment): string {
+  const buildTimeApiBaseUrlValue = buildTimeApiBaseUrl(useProdConfig)
+  if (!isCloudDistribution) {
+    return buildTimeApiBaseUrlValue
+  }
+  if (isDev && isLocalDevServer(devServerComfyUIUrl)) {
+    return ''
   }
 
   return configValueOrDefault(
     remoteConfig.value,
     'comfy_api_base_url',
-    BUILD_TIME_API_BASE_URL
+    buildTimeApiBaseUrlValue
   )
 }
 
+export function getComfyApiBaseUrl(): string {
+  return getComfyApiBaseUrlForEnvironment({
+    isCloudDistribution: isCloud,
+    isDev: import.meta.env.DEV,
+    devServerComfyUIUrl: __DEV_SERVER_COMFYUI_URL__,
+    useProdConfig: __USE_PROD_CONFIG__
+  })
+}
+
 export function getComfyPlatformBaseUrl(): string {
+  const buildTimePlatformBaseUrlValue =
+    buildTimePlatformBaseUrl(__USE_PROD_CONFIG__)
   if (!isCloud) {
-    return BUILD_TIME_PLATFORM_BASE_URL
+    return buildTimePlatformBaseUrlValue
   }
 
   return configValueOrDefault(
     remoteConfig.value,
     'comfy_platform_base_url',
-    BUILD_TIME_PLATFORM_BASE_URL
+    buildTimePlatformBaseUrlValue
   )
 }

src/config/firebase.test.ts

@@ -0,0 +1,37 @@
+import { describe, expect, it } from 'vitest'
+
+import {
+  getFirebaseConfigForEnvironment,
+  getFirebaseAuthEmulatorUrl
+} from '@/config/firebase'
+
+describe('firebase config', () => {
+  it('uses the explicit local project id when the auth emulator is enabled', () => {
+    const config = getFirebaseConfigForEnvironment({
+      isCloudBuild: false,
+      useProdConfig: false,
+      authEmulatorHost: '127.0.0.1:9099',
+      localProjectId: 'demo-cloud'
+    })
+
+    expect(config.projectId).toBe('demo-cloud')
+    expect(config.authDomain).toBe('demo-cloud.firebaseapp.com')
+  })
+
+  it('fails fast when the auth emulator is enabled without a local project id', () => {
+    expect(() =>
+      getFirebaseConfigForEnvironment({
+        isCloudBuild: false,
+        useProdConfig: false,
+        authEmulatorHost: '127.0.0.1:9099'
+      })
+    ).toThrow('VITE_FIREBASE_PROJECT_ID is required')
+  })
+
+  it('does not connect to the emulator without the explicit host flag', () => {
+    expect(getFirebaseAuthEmulatorUrl(undefined)).toBeNull()
+    expect(getFirebaseAuthEmulatorUrl('127.0.0.1:9099')).toBe(
+      'http://127.0.0.1:9099'
+    )
+  })
+})

src/config/firebase.ts

@@ -25,7 +25,54 @@ const PROD_CONFIG: FirebaseOptions = {
   measurementId: 'G-3ZBD3MBTG4'
 }
 
-const BUILD_TIME_CONFIG = __USE_PROD_CONFIG__ ? PROD_CONFIG : DEV_CONFIG
+type FirebaseEnvironment = {
+  isCloudBuild: boolean
+  useProdConfig: boolean
+  authEmulatorHost?: string
+  localProjectId?: string
+}
+
+function buildLocalEmulatorConfig(
+  buildTimeConfig: FirebaseOptions,
+  localProjectId: string | undefined
+): FirebaseOptions {
+  if (!localProjectId) {
+    throw new Error(
+      'VITE_FIREBASE_PROJECT_ID is required when VITE_FIREBASE_AUTH_EMULATOR_HOST is set'
+    )
+  }
+
+  return {
+    ...buildTimeConfig,
+    projectId: localProjectId,
+    authDomain: `${localProjectId}.firebaseapp.com`
+  }
+}
+
+export function getFirebaseAuthEmulatorUrl(
+  host: string | undefined
+): string | null {
+  return host ? `http://${host}` : null
+}
+
+export function getFirebaseConfigForEnvironment({
+  isCloudBuild,
+  useProdConfig,
+  authEmulatorHost,
+  localProjectId
+}: FirebaseEnvironment): FirebaseOptions {
+  const buildTimeConfig = useProdConfig ? PROD_CONFIG : DEV_CONFIG
+  if (authEmulatorHost) {
+    return buildLocalEmulatorConfig(buildTimeConfig, localProjectId)
+  }
+
+  if (!isCloudBuild) {
+    return buildTimeConfig
+  }
+
+  const runtimeConfig = remoteConfig.value.firebase_config
+  return runtimeConfig ?? buildTimeConfig
+}
 
 /**
  * Returns the Firebase configuration for the current environment.
@@ -33,10 +80,10 @@ const BUILD_TIME_CONFIG = __USE_PROD_CONFIG__ ? PROD_CONFIG : DEV_CONFIG
  * - OSS / localhost builds fall back to the build-time config determined by __USE_PROD_CONFIG__
  */
 export function getFirebaseConfig(): FirebaseOptions {
-  if (!isCloud) {
-    return BUILD_TIME_CONFIG
-  }
-
-  const runtimeConfig = remoteConfig.value.firebase_config
-  return runtimeConfig ?? BUILD_TIME_CONFIG
+  return getFirebaseConfigForEnvironment({
+    isCloudBuild: isCloud,
+    useProdConfig: __USE_PROD_CONFIG__,
+    authEmulatorHost: import.meta.env.VITE_FIREBASE_AUTH_EMULATOR_HOST,
+    localProjectId: import.meta.env.VITE_FIREBASE_PROJECT_ID
+  })
 }

src/locales/en/main.json

@@ -2130,6 +2130,43 @@
     "slots": "Node Slots Error",
     "widgets": "Node Widgets Error"
   },
+  "oauth": {
+    "consent": {
+      "allow": "Continue",
+      "deny": "Cancel",
+      "genericError": "OAuth request failed. Please restart from the client app.",
+      "loading": "Loading authorization request…",
+      "missingRequest": "This authorization request is missing. Please restart from the client app.",
+      "noWorkspaces": "No eligible workspaces are available for this request.",
+      "title": "{client} wants access",
+      "subtitle": "Sign in to {resource} to continue",
+      "resourceFallback": "this app",
+      "workspaceLabel": "Workspace",
+      "permissionsHeader": "Permissions",
+      "workspaceHelp": "Permissions apply to this workspace only.",
+      "learnMore": "Learn more",
+      "redirectNotice": "You'll be redirected to",
+      "appTypeNative": "Native app",
+      "appTypeWeb": "Web app",
+      "errorExpired": "This consent request has expired or has already been used. Please restart from the client app.",
+      "errorScopeBroadening": "The previously approved permissions don't cover this request. You'll need to re-authorize with the new permissions.",
+      "errorUnavailable": "This feature isn't available right now. Please contact support if the problem persists."
+    },
+    "scopes": {
+      "mcp:tools:read": {
+        "label": "View available workflow tools"
+      },
+      "mcp:tools:call": {
+        "label": "Run workflows on your behalf"
+      }
+    },
+    "workspace": {
+      "personal": "Personal",
+      "team": "Team",
+      "owner": "Owner",
+      "member": "Member"
+    }
+  },
   "auth": {
     "apiKey": {
       "title": "API Key",

src/main.ts

@@ -2,6 +2,7 @@ import { definePreset } from '@primevue/themes'
 import Aura from '@primevue/themes/aura'
 import * as Sentry from '@sentry/vue'
 import { initializeApp } from 'firebase/app'
+import { connectAuthEmulator, getAuth } from 'firebase/auth'
 import { createPinia } from 'pinia'
 import 'primeicons/primeicons.css'
 import PrimeVue from 'primevue/config'
@@ -11,7 +12,10 @@ import Tooltip from 'primevue/tooltip'
 import { createApp } from 'vue'
 import { VueFire, VueFireAuth } from 'vuefire'
 
-import { getFirebaseConfig } from '@/config/firebase'
+import {
+  getFirebaseAuthEmulatorUrl,
+  getFirebaseConfig
+} from '@/config/firebase'
 import {
   configValueOrDefault,
   remoteConfig
@@ -48,6 +52,14 @@ const ComfyUIPreset = definePreset(Aura, {
 })
 
 const firebaseApp = initializeApp(getFirebaseConfig())
+const firebaseAuthEmulatorUrl = getFirebaseAuthEmulatorUrl(
+  import.meta.env.VITE_FIREBASE_AUTH_EMULATOR_HOST
+)
+if (firebaseAuthEmulatorUrl) {
+  connectAuthEmulator(getAuth(firebaseApp), firebaseAuthEmulatorUrl, {
+    disableWarnings: true
+  })
+}
 
 const app = createApp(App)
 const pinia = createPinia()

src/platform/auth/session/useSessionCookie.test.ts

@@ -0,0 +1,84 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest'
+
+const mockGetIdToken = vi.fn()
+
+vi.mock('@/platform/distribution/types', () => ({
+  isCloud: true
+}))
+
+vi.mock('@/composables/useFeatureFlags', () => ({
+  useFeatureFlags: () => ({
+    flags: {
+      teamWorkspacesEnabled: true
+    }
+  })
+}))
+
+vi.mock('@/stores/authStore', () => ({
+  useAuthStore: () => ({
+    getIdToken: mockGetIdToken,
+    getAuthHeader: vi.fn()
+  })
+}))
+
+vi.mock('@/scripts/api', () => ({
+  api: {
+    apiURL: (path: string) => `/api${path}`
+  }
+}))
+
+describe('useSessionCookie', () => {
+  beforeEach(() => {
+    vi.resetModules()
+    vi.restoreAllMocks()
+    mockGetIdToken.mockReset()
+    globalThis.fetch = vi.fn()
+  })
+
+  it('createSessionOrThrow posts the Firebase token and awaits success', async () => {
+    mockGetIdToken.mockResolvedValue('firebase-id-token')
+    vi.mocked(globalThis.fetch).mockResolvedValue(
+      new Response(null, { status: 204 })
+    )
+    const { useSessionCookie } =
+      await import('@/platform/auth/session/useSessionCookie')
+
+    await useSessionCookie().createSessionOrThrow()
+
+    expect(globalThis.fetch).toHaveBeenCalledWith('/api/auth/session', {
+      method: 'POST',
+      credentials: 'include',
+      headers: {
+        Authorization: 'Bearer firebase-id-token',
+        'Content-Type': 'application/json'
+      }
+    })
+  })
+
+  it('createSessionOrThrow fails fast without a Firebase token', async () => {
+    mockGetIdToken.mockResolvedValue(null)
+    const { useSessionCookie } =
+      await import('@/platform/auth/session/useSessionCookie')
+
+    await expect(useSessionCookie().createSessionOrThrow()).rejects.toThrow(
+      'No Firebase token available for session creation'
+    )
+    expect(globalThis.fetch).not.toHaveBeenCalled()
+  })
+
+  it('createSessionOrThrow fails fast on non-success responses', async () => {
+    mockGetIdToken.mockResolvedValue('firebase-id-token')
+    vi.mocked(globalThis.fetch).mockResolvedValue(
+      new Response(JSON.stringify({ message: 'session denied' }), {
+        status: 401,
+        headers: { 'Content-Type': 'application/json' }
+      })
+    )
+    const { useSessionCookie } =
+      await import('@/platform/auth/session/useSessionCookie')
+
+    await expect(useSessionCookie().createSessionOrThrow()).rejects.toThrow(
+      'session denied'
+    )
+  })
+})

src/platform/auth/session/useSessionCookie.ts

@@ -1,4 +1,5 @@
 import { useFeatureFlags } from '@/composables/useFeatureFlags'
+import { clearOAuthRequestId } from '@/platform/cloud/oauth/oauthState'
 import { isCloud } from '@/platform/distribution/types'
 import { api } from '@/scripts/api'
 import { useAuthStore } from '@/stores/authStore'
@@ -8,6 +9,35 @@ import { useAuthStore } from '@/stores/authStore'
  * Creates and deletes session cookies on the ComfyUI server.
  */
 export const useSessionCookie = () => {
+  const createSessionWithHeader = async (
+    authHeader: Record<string, string>
+  ): Promise<Response> => {
+    return await fetch(api.apiURL('/auth/session'), {
+      method: 'POST',
+      credentials: 'include',
+      headers: {
+        ...authHeader,
+        'Content-Type': 'application/json'
+      }
+    })
+  }
+
+  const readSessionError = async (response: Response): Promise<string> => {
+    const errorData = await response.json().catch(() => ({}))
+    return errorData.message || response.statusText
+  }
+
+  const getFirebaseSessionHeaderOrThrow = async (): Promise<
+    Record<string, string>
+  > => {
+    const firebaseToken = await useAuthStore().getIdToken()
+    if (!firebaseToken) {
+      throw new Error('No Firebase token available for session creation')
+    }
+
+    return { Authorization: `Bearer ${firebaseToken}` }
+  }
+
   /**
    * Creates or refreshes the session cookie.
    * Called after login and on token refresh.
@@ -47,20 +77,12 @@ export const useSessionCookie = () => {
         authHeader = header
       }
 
-      const response = await fetch(api.apiURL('/auth/session'), {
-        method: 'POST',
-        credentials: 'include',
-        headers: {
-          ...authHeader,
-          'Content-Type': 'application/json'
-        }
-      })
+      const response = await createSessionWithHeader(authHeader)
 
       if (!response.ok) {
-        const errorData = await response.json().catch(() => ({}))
         console.warn(
           'Failed to create session cookie:',
-          errorData.message || response.statusText
+          await readSessionError(response)
         )
       }
     } catch (error) {
@@ -68,11 +90,22 @@ export const useSessionCookie = () => {
     }
   }
 
+  const createSessionOrThrow = async (): Promise<void> => {
+    if (!isCloud) return
+
+    const authHeader = await getFirebaseSessionHeaderOrThrow()
+    const response = await createSessionWithHeader(authHeader)
+    if (!response.ok) {
+      throw new Error(await readSessionError(response))
+    }
+  }
+
   /**
    * Deletes the session cookie.
    * Called on logout.
    */
   const deleteSession = async (): Promise<void> => {
+    clearOAuthRequestId()
     if (!isCloud) return
 
     try {
@@ -95,6 +128,7 @@ export const useSessionCookie = () => {
 
   return {
     createSession,
+    createSessionOrThrow,
     deleteSession
   }
 }

src/platform/cloud/oauth/OAuthConsentView.stories.ts

@@ -0,0 +1,117 @@
+import type { Meta, StoryObj } from '@storybook/vue3-vite'
+
+import OAuthConsentView from '@/platform/cloud/oauth/OAuthConsentView.vue'
+import type { OAuthConsentChallenge } from '@/platform/cloud/oauth/oauthApi'
+
+const baseChallenge: OAuthConsentChallenge = {
+  oauth_request_id: '550e8400-e29b-41d4-a716-446655440000',
+  csrf_token: 'preview-csrf-token',
+  client_display_name: 'Cursor',
+  resource_display_name: 'Comfy Cloud MCP',
+  redirect_uri: 'http://127.0.0.1:50632/cb',
+  client_application_type: 'native',
+  scopes: ['mcp:tools:read', 'mcp:tools:call'],
+  workspaces: [
+    {
+      id: 'personal-workspace',
+      name: 'Personal Workspace',
+      type: 'personal',
+      role: 'owner'
+    },
+    {
+      id: 'team-workspace',
+      name: 'Comfy Team',
+      type: 'team',
+      role: 'member'
+    }
+  ]
+}
+
+const meta: Meta<typeof OAuthConsentView> = {
+  title: 'Cloud/OAuth/Consent',
+  component: OAuthConsentView
+}
+export default meta
+type Story = StoryObj<typeof meta>
+
+const noopSubmit = async () => {}
+
+export const TwoWorkspaces: Story = {
+  args: { initialChallenge: baseChallenge, submitDecision: noopSubmit }
+}
+
+export const SingleWorkspace: Story = {
+  args: {
+    initialChallenge: {
+      ...baseChallenge,
+      workspaces: [baseChallenge.workspaces[0]]
+    },
+    submitDecision: noopSubmit
+  }
+}
+
+export const ManyWorkspaces: Story = {
+  args: {
+    initialChallenge: {
+      ...baseChallenge,
+      workspaces: [
+        baseChallenge.workspaces[0],
+        baseChallenge.workspaces[1],
+        {
+          id: 'design-team',
+          name: 'Design Studio',
+          type: 'team',
+          role: 'owner'
+        },
+        {
+          id: 'agency-team',
+          name: 'Agency Workspace',
+          type: 'team',
+          role: 'member'
+        }
+      ]
+    },
+    submitDecision: noopSubmit
+  }
+}
+
+export const UnknownScope: Story = {
+  args: {
+    initialChallenge: {
+      ...baseChallenge,
+      scopes: ['mcp:tools:read', 'mcp:tools:call', 'mcp:billing:read']
+    },
+    submitDecision: noopSubmit
+  }
+}
+
+export const ClaudeDesktop: Story = {
+  args: {
+    initialChallenge: {
+      ...baseChallenge,
+      client_display_name: 'Claude Desktop'
+    },
+    submitDecision: noopSubmit
+  }
+}
+
+export const WebClient: Story = {
+  args: {
+    initialChallenge: {
+      ...baseChallenge,
+      client_display_name: 'Comfy Studio',
+      client_application_type: 'web',
+      redirect_uri: 'https://studio.example.com/oauth/cb'
+    },
+    submitDecision: noopSubmit
+  }
+}
+
+export const LegacyClientNoBadge: Story = {
+  args: {
+    // Pre-DCR seeded clients have application_type="" — UI should hide
+    // the badge entirely rather than guess.
+    initialChallenge: { ...baseChallenge, client_application_type: '' },
+    submitDecision: noopSubmit
+  }
+}

src/platform/cloud/oauth/OAuthConsentView.test.ts

@@ -0,0 +1,230 @@
+import { render, screen, waitFor } from '@testing-library/vue'
+import userEvent from '@testing-library/user-event'
+import { describe, expect, it, vi } from 'vitest'
+import { createI18n } from 'vue-i18n'
+
+import OAuthConsentView from '@/platform/cloud/oauth/OAuthConsentView.vue'
+import { OAuthApiError } from '@/platform/cloud/oauth/oauthApi'
+import type { OAuthConsentChallenge } from '@/platform/cloud/oauth/oauthApi'
+
+const i18n = createI18n({
+  legacy: false,
+  locale: 'en',
+  messages: {
+    en: {
+      g: {
+        singleSelectDropdown: 'Select an option'
+      },
+      oauth: {
+        consent: {
+          allow: 'Continue',
+          deny: 'Cancel',
+          genericError: 'OAuth request failed.',
+          loading: 'Loading authorization request…',
+          missingRequest: 'This authorization request is missing.',
+          noWorkspaces: 'No eligible workspaces are available.',
+          title: '{client} wants access',
+          subtitle: 'Sign in to {resource} to continue',
+          workspaceLabel: 'Workspace',
+          permissionsHeader: 'Permissions',
+          workspaceHelp: 'Permissions apply to this workspace only.',
+          learnMore: 'Learn more',
+          redirectNotice: "You'll be redirected to",
+          appTypeNative: 'Native app',
+          appTypeWeb: 'Web app',
+          errorExpired:
+            'This consent request has expired or has already been used.',
+          errorScopeBroadening:
+            "The previously approved permissions don't cover this request.",
+          errorUnavailable: "This feature isn't available right now."
+        },
+        scopes: {
+          'mcp:tools:read': {
+            label: 'View available workflow tools'
+          },
+          'mcp:tools:call': {
+            label: 'Run workflows on your behalf'
+          }
+        },
+        workspace: {
+          personal: 'Personal',
+          team: 'Team',
+          owner: 'Owner',
+          member: 'Member'
+        }
+      }
+    }
+  }
+})
+
+const challenge: OAuthConsentChallenge = {
+  oauth_request_id: '550e8400-e29b-41d4-a716-446655440000',
+  csrf_token: 'csrf-token',
+  client_display_name: 'Cursor',
+  resource_display_name: 'ComfyUI MCP',
+  redirect_uri: 'http://127.0.0.1:50632/cb',
+  client_application_type: 'native',
+  scopes: ['mcp:tools:read', 'mcp:tools:call', 'mcp:unknown:test'],
+  workspaces: [
+    {
+      id: 'personal-workspace',
+      name: 'Personal',
+      type: 'personal',
+      role: 'owner'
+    },
+    {
+      id: 'team-workspace',
+      name: 'Team',
+      type: 'team',
+      role: 'member'
+    }
+  ]
+}
+
+const renderConsent = (
+  overrides: Partial<OAuthConsentChallenge> = {},
+  submitDecision = vi.fn()
+) =>
+  render(OAuthConsentView, {
+    global: { plugins: [i18n] },
+    props: {
+      initialChallenge: { ...challenge, ...overrides },
+      submitDecision
+    }
+  })
+
+describe('OAuthConsentView', () => {
+  it('renders title, subtitle, and scope checklist', () => {
+    renderConsent()
+
+    // Title is "<client> wants access". Subtitle is "Sign in to <resource>
+    // to continue". Both are short and avoid repeating any brand name twice.
+    expect(screen.getByText('Cursor wants access')).toBeVisible()
+    expect(screen.getByText('Sign in to ComfyUI MCP to continue')).toBeVisible()
+    // Permissions section header is just the static word "Permissions".
+    expect(screen.getByText('Permissions')).toBeVisible()
+    // Known scopes render their human-readable labels. We deliberately
+    // avoid MCP jargon ("tools", "metadata") — the user thinks in
+    // ComfyUI vocabulary (workflows), and the consent UI doesn't show
+    // an enumerated tool list, so the label shouldn't promise one.
+    expect(screen.getByText('View available workflow tools')).toBeVisible()
+    expect(screen.getByText('Run workflows on your behalf')).toBeVisible()
+    // Unknown scopes fall back to the raw scope string so a new resource
+    // doesn't require a frontend release just to render its consent page.
+    expect(screen.getByText('mcp:unknown:test')).toBeVisible()
+  })
+
+  it('renders the registered redirect URI verbatim', () => {
+    renderConsent()
+    // Verbatim render — the user must be able to read the loopback URL
+    // and verify it's the localhost callback their CLI is listening on.
+    expect(screen.getByText('http://127.0.0.1:50632/cb')).toBeVisible()
+    expect(screen.getByText("You'll be redirected to")).toBeVisible()
+  })
+
+  it('renders a Native badge when client_application_type is "native"', () => {
+    renderConsent()
+    expect(screen.getByText('Native app')).toBeVisible()
+  })
+
+  it('renders a Web badge when client_application_type is "web"', () => {
+    renderConsent({ client_application_type: 'web' })
+    expect(screen.getByText('Web app')).toBeVisible()
+  })
+
+  it('hides the application-type badge for legacy seeded clients', () => {
+    renderConsent({ client_application_type: '' })
+    expect(screen.queryByText('Native app')).not.toBeInTheDocument()
+    expect(screen.queryByText('Web app')).not.toBeInTheDocument()
+  })
+
+  it('preselects the only workspace and submits with it', async () => {
+    const user = userEvent.setup()
+    const submitDecision = vi.fn()
+    renderConsent({ workspaces: [challenge.workspaces[0]] }, submitDecision)
+
+    // Single-workspace path: Allow is enabled and submission carries the
+    // sole workspace_id.
+    await user.click(screen.getByRole('button', { name: 'Continue' }))
+
+    expect(submitDecision).toHaveBeenCalledWith({
+      oauthRequestId: '550e8400-e29b-41d4-a716-446655440000',
+      csrfToken: 'csrf-token',
+      decision: 'allow',
+      workspaceId: 'personal-workspace'
+    })
+  })
+
+  it('keeps Allow disabled when multiple workspaces are available and none is chosen', () => {
+    renderConsent()
+    const allow = screen.getByRole('button', { name: 'Continue' })
+    expect(allow).toBeDisabled()
+  })
+
+  it('submits deny when the user cancels', async () => {
+    const user = userEvent.setup()
+    const submitDecision = vi.fn()
+    renderConsent({ workspaces: [challenge.workspaces[0]] }, submitDecision)
+
+    await user.click(screen.getByRole('button', { name: 'Cancel' }))
+
+    expect(submitDecision).toHaveBeenCalledWith(
+      expect.objectContaining({
+        decision: 'deny',
+        workspaceId: 'personal-workspace'
+      })
+    )
+  })
+
+  it('maps OAuthApiError(400) to the expired-request message', async () => {
+    const submitDecision = vi
+      .fn()
+      .mockRejectedValue(new OAuthApiError('expired', 400))
+    const user = userEvent.setup()
+    renderConsent({ workspaces: [challenge.workspaces[0]] }, submitDecision)
+
+    await user.click(screen.getByRole('button', { name: 'Continue' }))
+
+    await waitFor(() => {
+      expect(
+        screen.getByText(
+          'This consent request has expired or has already been used.'
+        )
+      ).toBeVisible()
+    })
+  })
+
+  it('maps OAuthApiError(403) to the scope-broadening re-prompt message', async () => {
+    const submitDecision = vi
+      .fn()
+      .mockRejectedValue(new OAuthApiError('scope broadening', 403))
+    const user = userEvent.setup()
+    renderConsent({ workspaces: [challenge.workspaces[0]] }, submitDecision)
+
+    await user.click(screen.getByRole('button', { name: 'Continue' }))
+
+    await waitFor(() => {
+      expect(
+        screen.getByText(
+          "The previously approved permissions don't cover this request."
+        )
+      ).toBeVisible()
+    })
+  })
+
+  it('maps OAuthApiError(404) to the feature-unavailable message', async () => {
+    const submitDecision = vi
+      .fn()
+      .mockRejectedValue(new OAuthApiError('disabled', 404))
+    const user = userEvent.setup()
+    renderConsent({ workspaces: [challenge.workspaces[0]] }, submitDecision)
+
+    await user.click(screen.getByRole('button', { name: 'Continue' }))
+
+    await waitFor(() => {
+      expect(
+        screen.getByText("This feature isn't available right now.")
+      ).toBeVisible()
+    })
+  })
+})

src/platform/cloud/oauth/OAuthConsentView.vue

@@ -0,0 +1,331 @@
+<template>
+  <main class="mx-auto flex min-h-screen max-w-md flex-col justify-center p-6">
+    <section
+      v-if="challenge"
+      class="flex flex-col gap-6 rounded-2xl border border-solid border-muted bg-(--p-content-background) p-6 shadow-sm"
+    >
+      <header class="flex flex-col items-center gap-3 pt-2 text-center">
+        <div
+          class="flex size-12 items-center justify-center rounded-2xl bg-secondary-background"
+        >
+          <i
+            class="pi pi-key text-xl text-base-foreground"
+            aria-hidden="true"
+          />
+        </div>
+        <div class="flex flex-col items-center gap-1.5">
+          <h1 class="m-0 text-xl/tight font-semibold">
+            {{
+              t('oauth.consent.title', {
+                client: challenge.client_display_name
+              })
+            }}
+          </h1>
+          <p class="m-0 text-sm text-muted">
+            {{ t('oauth.consent.subtitle', { resource: resourceName }) }}
+          </p>
+          <span
+            v-if="appTypeBadge"
+            class="mt-1 inline-flex items-center gap-1 rounded-full border border-solid border-muted px-2 py-0.5 text-xs text-muted"
+          >
+            <i :class="appTypeBadge.icon" aria-hidden="true" />
+            {{ appTypeBadge.label }}
+          </span>
+        </div>
+      </header>
+
+      <section class="flex flex-col gap-2">
+        <p class="m-0 text-sm font-medium">
+          {{ t('oauth.consent.workspaceLabel') }}
+        </p>
+        <div
+          v-if="challenge.workspaces.length === 0"
+          class="p-3 text-sm text-muted"
+        >
+          {{ t('oauth.consent.noWorkspaces') }}
+        </div>
+        <ul
+          v-else
+          role="radiogroup"
+          :aria-label="t('oauth.consent.workspaceLabel')"
+          class="m-0 flex scrollbar-custom max-h-72 list-none flex-col gap-1 overflow-y-auto p-0"
+        >
+          <li v-for="workspace in challenge.workspaces" :key="workspace.id">
+            <button
+              type="button"
+              role="radio"
+              :aria-checked="selectedWorkspaceId === workspace.id"
+              :class="
+                cn(
+                  'flex w-full cursor-pointer items-center gap-3 rounded-md border-none bg-transparent px-3 py-2 text-left transition-colors',
+                  'hover:bg-secondary-background-hover',
+                  'focus-visible:ring-ring focus-visible:ring-1 focus-visible:outline-none',
+                  selectedWorkspaceId === workspace.id &&
+                    'bg-secondary-background'
+                )
+              "
+              @click="selectedWorkspaceId = workspace.id"
+            >
+              <WorkspaceProfilePic
+                class="size-8 shrink-0 text-sm"
+                :workspace-name="workspace.name"
+              />
+              <div class="flex min-w-0 flex-1 flex-col">
+                <span class="truncate text-sm text-base-foreground">
+                  {{ workspace.name }}
+                </span>
+                <span class="text-xs text-muted-foreground">
+                  {{ workspaceSecondaryLabel(workspace) }}
+                </span>
+              </div>
+              <i
+                v-if="selectedWorkspaceId === workspace.id"
+                class="pi pi-check shrink-0 text-sm text-base-foreground"
+                aria-hidden="true"
+              />
+            </button>
+          </li>
+        </ul>
+        <p class="m-0 text-xs text-muted">
+          {{ t('oauth.consent.workspaceHelp') }}
+        </p>
+      </section>
+
+      <section class="flex flex-col gap-3">
+        <p class="m-0 text-sm font-medium">
+          {{ t('oauth.consent.permissionsHeader') }}
+        </p>
+        <ul class="m-0 flex list-none flex-col gap-1.5 p-0">
+          <li
+            v-for="scope in challenge.scopes"
+            :key="scope"
+            class="flex items-center gap-2"
+          >
+            <i
+              class="pi pi-check shrink-0 text-sm text-primary-background"
+              aria-hidden="true"
+            />
+            <span class="text-sm">
+              {{ scopeLabel(scope) }}
+            </span>
+          </li>
+        </ul>
+      </section>
+
+      <section
+        v-if="challenge.redirect_uri"
+        class="flex flex-col gap-1.5 rounded-lg border border-solid border-muted bg-secondary-background/40 p-3"
+      >
+        <span class="text-xs text-muted">
+          {{ t('oauth.consent.redirectNotice') }}
+        </span>
+        <code
+          class="m-0 truncate font-mono text-xs text-base-foreground"
+          :title="challenge.redirect_uri"
+        >
+          {{ challenge.redirect_uri }}
+        </code>
+      </section>
+
+      <p
+        v-if="errorMessage"
+        role="alert"
+        class="m-0 rounded-md border border-solid border-destructive-background bg-destructive-background/10 p-3 text-sm text-destructive-background"
+      >
+        {{ errorMessage }}
+      </p>
+
+      <footer class="flex flex-col gap-2">
+        <Button
+          variant="primary"
+          size="lg"
+          class="w-full"
+          :loading="isSubmitting && lastDecision === 'allow'"
+          :disabled="isSubmitting || !canSubmit"
+          @click="submit('allow')"
+        >
+          {{ t('oauth.consent.allow') }}
+        </Button>
+        <Button
+          variant="secondary"
+          size="lg"
+          class="w-full"
+          :loading="isSubmitting && lastDecision === 'deny'"
+          :disabled="isSubmitting"
+          @click="submit('deny')"
+        >
+          {{ t('oauth.consent.deny') }}
+        </Button>
+      </footer>
+    </section>
+
+    <p
+      v-else-if="errorMessage"
+      role="alert"
+      class="m-0 rounded-md border border-solid border-destructive-background bg-destructive-background/10 p-3 text-center text-sm text-destructive-background"
+    >
+      {{ errorMessage }}
+    </p>
+    <p v-else class="m-0 text-center text-sm text-muted">
+      {{ t('oauth.consent.loading') }}
+    </p>
+  </main>
+</template>
+
+<script setup lang="ts">
+import { computed, onMounted, ref } from 'vue'
+import { useI18n } from 'vue-i18n'
+import { useRoute } from 'vue-router'
+
+import Button from '@/components/ui/button/Button.vue'
+import {
+  OAuthApiError,
+  fetchOAuthConsentChallenge,
+  submitOAuthConsentDecision
+} from '@/platform/cloud/oauth/oauthApi'
+import type {
+  OAuthConsentChallenge,
+  OAuthConsentDecision,
+  OAuthWorkspace
+} from '@/platform/cloud/oauth/oauthApi'
+import {
+  clearOAuthRequestId,
+  getOAuthRequestId
+} from '@/platform/cloud/oauth/oauthState'
+import WorkspaceProfilePic from '@/platform/workspace/components/WorkspaceProfilePic.vue'
+import { cn } from '@comfyorg/tailwind-utils'
+
+const { initialChallenge, submitDecision = submitOAuthConsentDecision } =
+  defineProps<{
+    initialChallenge?: OAuthConsentChallenge
+    submitDecision?: OAuthConsentDecision
+  }>()
+
+const { t, te } = useI18n()
+const route = useRoute()
+const challenge = ref<OAuthConsentChallenge | null>(initialChallenge ?? null)
+const selectedWorkspaceId = ref<string | undefined>(
+  initialChallenge?.workspaces.length === 1
+    ? initialChallenge.workspaces[0].id
+    : undefined
+)
+const errorMessage = ref('')
+const isSubmitting = ref(false)
+const lastDecision = ref<'allow' | 'deny' | null>(null)
+
+const resourceName = computed(
+  () =>
+    challenge.value?.resource_display_name ??
+    t('oauth.consent.resourceFallback')
+)
+
+const appTypeBadge = computed(() => {
+  const appType = challenge.value?.client_application_type
+  if (appType === 'native') {
+    return { label: t('oauth.consent.appTypeNative'), icon: 'pi pi-desktop' }
+  }
+  if (appType === 'web') {
+    return { label: t('oauth.consent.appTypeWeb'), icon: 'pi pi-globe' }
+  }
+  return null
+})
+
+const selectedWorkspaceIsValid = computed(() =>
+  Boolean(
+    selectedWorkspaceId.value &&
+    challenge.value?.workspaces.some(
+      (workspace) => workspace.id === selectedWorkspaceId.value
+    )
+  )
+)
+
+const canSubmit = computed(() => selectedWorkspaceIsValid.value)
+
+function scopeLabel(scope: string): string {
+  const key = `oauth.scopes.${scope}.label`
+  return te(key) ? t(key) : scope
+}
+
+function labelFor(value: string): string {
+  const key = `oauth.workspace.${value}`
+  return te(key) ? t(key) : value
+}
+
+// Row's secondary label: personal workspaces show "Personal" (role is
+// always implicit owner); team workspaces show the role ("Owner"/"Member").
+function workspaceSecondaryLabel(workspace: OAuthWorkspace): string {
+  return workspace.type === 'personal'
+    ? labelFor('personal')
+    : labelFor(workspace.role)
+}
+
+function requestIdFromRoute(): string | null {
+  return typeof route.query.oauth_request_id === 'string'
+    ? route.query.oauth_request_id
+    : getOAuthRequestId()
+}
+
+function initializeWorkspaceSelection(nextChallenge: OAuthConsentChallenge) {
+  selectedWorkspaceId.value =
+    nextChallenge.workspaces.length === 1
+      ? nextChallenge.workspaces[0].id
+      : undefined
+}
+
+async function loadChallenge() {
+  const oauthRequestId = requestIdFromRoute()
+  if (!oauthRequestId) {
+    errorMessage.value = t('oauth.consent.missingRequest')
+    return
+  }
+  try {
+    const next = await fetchOAuthConsentChallenge(oauthRequestId)
+    challenge.value = next
+    initializeWorkspaceSelection(next)
+  } catch (error) {
+    errorMessage.value = messageForError(error)
+  }
+}
+
+function messageForError(error: unknown): string {
+  if (error instanceof OAuthApiError) {
+    if (error.status === 400) return t('oauth.consent.errorExpired')
+    if (error.status === 403) return t('oauth.consent.errorScopeBroadening')
+    if (error.status === 404) return t('oauth.consent.errorUnavailable')
+  }
+  return error instanceof Error
+    ? error.message
+    : t('oauth.consent.genericError')
+}
+
+async function submit(decision: 'allow' | 'deny') {
+  if (!challenge.value) return
+  if (decision === 'allow' && !selectedWorkspaceIsValid.value) return
+
+  errorMessage.value = ''
+  isSubmitting.value = true
+  lastDecision.value = decision
+  try {
+    await submitDecision({
+      oauthRequestId: challenge.value.oauth_request_id,
+      csrfToken: challenge.value.csrf_token,
+      decision,
+      // Cloud requires workspace_id on both allow and deny.
+      workspaceId:
+        selectedWorkspaceId.value ?? challenge.value.workspaces[0]?.id ?? ''
+    })
+    clearOAuthRequestId()
+  } catch (error) {
+    errorMessage.value = messageForError(error)
+  } finally {
+    isSubmitting.value = false
+    lastDecision.value = null
+  }
+}
+
+onMounted(() => {
+  if (!initialChallenge) {
+    void loadChallenge()
+  }
+})
+</script>

src/platform/cloud/oauth/oauthApi.ts

@@ -0,0 +1,145 @@
+export type OAuthWorkspace = {
+  id: string
+  name: string
+  type: 'personal' | 'team'
+  role: 'owner' | 'member'
+}
+
+export type OAuthConsentChallenge = {
+  oauth_request_id: string
+  csrf_token: string
+  client_display_name: string
+  resource_display_name?: string
+  /**
+   * Exact registered redirect URI the OAuth client will be sent to on
+   * success/deny. Surfaced verbatim so users can verify the destination
+   * (RFC 8252 loopback for CLIs, HTTPS for web clients).
+   */
+  redirect_uri?: string
+  /**
+   * RFC 7591 application_type — "native" (CLI/desktop, loopback redirect),
+   * "web" (HTTPS-hosted), or "" for legacy seeded clients. Used to render
+   * a Native / Web badge so users know what kind of app they're authorizing.
+   */
+  client_application_type?: 'native' | 'web' | ''
+  scopes: string[]
+  workspaces: OAuthWorkspace[]
+}
+
+export type OAuthConsentDecisionParams = {
+  oauthRequestId: string
+  csrfToken: string
+  decision: 'allow' | 'deny'
+  workspaceId: string
+}
+
+export type OAuthConsentDecision = (
+  params: OAuthConsentDecisionParams
+) => Promise<void>
+
+type OAuthDecisionResponse = {
+  redirect_url?: string
+}
+
+export class OAuthApiError extends Error {
+  constructor(
+    message: string,
+    readonly status: number
+  ) {
+    super(message)
+    this.name = 'OAuthApiError'
+  }
+}
+
+function oauthUrl(path: string): string {
+  // Relative URL — let the Vite dev-server proxy (same origin as the FE)
+  // or the production same-host deploy hit ingest.
+  //
+  // Going direct cross-origin via VITE_CLOUD_INGEST_ORIGIN is a footgun:
+  // useSessionCookie POSTs /api/auth/session through the proxy, so the
+  // Set-Cookie response lands on the FE origin. A cross-origin fetch to
+  // a different cloud host wouldn't include that cookie, so the consent
+  // challenge would 302 to login (and trip browser cross-origin redirect
+  // rules to boot — the symptom looks like "CORS error" on a fetch
+  // initiated from /oauth/authorize).
+  //
+  // Keep all OAuth calls same-origin. The Vite proxy / production
+  // ingress is the single point of routing.
+  return path
+}
+
+async function readErrorMessage(response: Response): Promise<string> {
+  const body = await response.json().catch(() => null)
+  return body?.message ?? response.statusText
+}
+
+function assertChallenge(
+  value: unknown
+): asserts value is OAuthConsentChallenge {
+  if (typeof value !== 'object' || value === null) {
+    throw new Error('OAuth consent challenge is invalid')
+  }
+
+  const challenge = value as Partial<OAuthConsentChallenge>
+  if (
+    typeof challenge.oauth_request_id !== 'string' ||
+    typeof challenge.csrf_token !== 'string' ||
+    typeof challenge.client_display_name !== 'string' ||
+    !Array.isArray(challenge.scopes) ||
+    !Array.isArray(challenge.workspaces)
+  ) {
+    throw new Error('OAuth consent challenge is invalid')
+  }
+}
+
+export async function fetchOAuthConsentChallenge(
+  oauthRequestId: string
+): Promise<OAuthConsentChallenge> {
+  const response = await fetch(
+    oauthUrl(`/oauth/authorize?oauth_request_id=${oauthRequestId}`),
+    {
+      method: 'GET',
+      credentials: 'include'
+    }
+  )
+
+  if (!response.ok) {
+    throw new OAuthApiError(await readErrorMessage(response), response.status)
+  }
+
+  const challenge: unknown = await response.json()
+  assertChallenge(challenge)
+  return challenge
+}
+
+export async function submitOAuthConsentDecision({
+  oauthRequestId,
+  csrfToken,
+  decision,
+  workspaceId
+}: OAuthConsentDecisionParams): Promise<void> {
+  const response = await fetch(oauthUrl('/oauth/authorize'), {
+    method: 'POST',
+    credentials: 'include',
+    headers: {
+      'Content-Type': 'application/json'
+    },
+    body: JSON.stringify({
+      oauth_request_id: oauthRequestId,
+      csrf_token: csrfToken,
+      decision,
+      workspace_id: workspaceId
+    })
+  })
+
+  if (!response.ok) {
+    throw new OAuthApiError(await readErrorMessage(response), response.status)
+  }
+
+  const body: OAuthDecisionResponse = await response.json()
+  if (!body.redirect_url) {
+    throw new Error('OAuth consent response did not include redirect_url')
+  }
+
+  globalThis.location.href = body.redirect_url
+}

src/platform/cloud/oauth/oauthState.test.ts

@@ -0,0 +1,53 @@
+import { beforeEach, describe, expect, it } from 'vitest'
+
+import {
+  captureOAuthRequestId,
+  clearOAuthRequestId,
+  getOAuthRequestId,
+  hasOAuthRequestId
+} from '@/platform/cloud/oauth/oauthState'
+
+describe('oauthState', () => {
+  beforeEach(() => {
+    sessionStorage.clear()
+    clearOAuthRequestId()
+  })
+
+  it('captures a valid oauth_request_id only', () => {
+    captureOAuthRequestId({
+      oauth_request_id: '550e8400-e29b-41d4-a716-446655440000',
+      client_id: 'must-not-be-stored'
+    })
+
+    expect(getOAuthRequestId()).toBe('550e8400-e29b-41d4-a716-446655440000')
+    expect(hasOAuthRequestId()).toBe(true)
+    expect(sessionStorage.getItem('Comfy.OAuthRequestId')).toBe(
+      '550e8400-e29b-41d4-a716-446655440000'
+    )
+  })
+
+  it('ignores missing, repeated, and invalid request ids', () => {
+    captureOAuthRequestId({})
+    expect(getOAuthRequestId()).toBeNull()
+
+    captureOAuthRequestId({ oauth_request_id: ['a', 'b'] })
+    expect(getOAuthRequestId()).toBeNull()
+
+    captureOAuthRequestId({ oauth_request_id: 'not-a-uuid' })
+    expect(getOAuthRequestId()).toBeNull()
+  })
+
+  it('hydrates from session storage and clears after completion', () => {
+    sessionStorage.setItem(
+      'Comfy.OAuthRequestId',
+      '550e8400-e29b-41d4-a716-446655440000'
+    )
+
+    expect(getOAuthRequestId()).toBe('550e8400-e29b-41d4-a716-446655440000')
+
+    clearOAuthRequestId()
+
+    expect(getOAuthRequestId()).toBeNull()
+    expect(sessionStorage.getItem('Comfy.OAuthRequestId')).toBeNull()
+  })
+})

src/platform/cloud/oauth/oauthState.ts

@@ -0,0 +1,38 @@
+import type { LocationQuery } from 'vue-router'
+
+const OAUTH_REQUEST_ID_STORAGE_KEY = 'Comfy.OAuthRequestId'
+const UUID_PATTERN =
+  /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i
+
+function readQueryString(value: LocationQuery[string]): string | null {
+  return typeof value === 'string' ? value : null
+}
+
+function isOAuthRequestId(value: string): boolean {
+  return UUID_PATTERN.test(value)
+}
+
+function readStoredOAuthRequestId(): string | null {
+  const value = sessionStorage.getItem(OAUTH_REQUEST_ID_STORAGE_KEY)
+  return value && isOAuthRequestId(value) ? value : null
+}
+
+export function captureOAuthRequestId(query: LocationQuery): string | null {
+  const value = readQueryString(query.oauth_request_id)
+  if (!value || !isOAuthRequestId(value)) return null
+
+  sessionStorage.setItem(OAUTH_REQUEST_ID_STORAGE_KEY, value)
+  return value
+}
+
+export function getOAuthRequestId(): string | null {
+  return readStoredOAuthRequestId()
+}
+
+export function hasOAuthRequestId(): boolean {
+  return getOAuthRequestId() !== null
+}
+
+export function clearOAuthRequestId(): void {
+  sessionStorage.removeItem(OAUTH_REQUEST_ID_STORAGE_KEY)
+}

src/platform/cloud/onboarding/CloudLoginView.vue

@@ -116,6 +116,11 @@ import { useRoute, useRouter } from 'vue-router'
 
 import Button from '@/components/ui/button/Button.vue'
 import { useAuthActions } from '@/composables/auth/useAuthActions'
+import { useSessionCookie } from '@/platform/auth/session/useSessionCookie'
+import {
+  captureOAuthRequestId,
+  getOAuthRequestId
+} from '@/platform/cloud/oauth/oauthState'
 import CloudSignInForm from '@/platform/cloud/onboarding/components/CloudSignInForm.vue'
 import { useFreeTierOnboarding } from '@/platform/cloud/onboarding/composables/useFreeTierOnboarding'
 import { getSafePreviousFullPath } from '@/platform/cloud/onboarding/utils/previousFullPath'
@@ -127,6 +132,7 @@ const { t } = useI18n()
 const router = useRouter()
 const route = useRoute()
 const authActions = useAuthActions()
+const sessionCookie = useSessionCookie()
 const isSecureContext = globalThis.isSecureContext
 const authError = ref('')
 const toastStore = useToastStore()
@@ -153,6 +159,17 @@ const onSuccess = async () => {
     life: 2000
   })
 
+  captureOAuthRequestId(route.query)
+  const oauthRequestId = getOAuthRequestId()
+  if (oauthRequestId) {
+    await sessionCookie.createSessionOrThrow()
+    await router.push({
+      name: 'cloud-oauth-consent',
+      query: { oauth_request_id: oauthRequestId }
+    })
+    return
+  }
+
   const previousFullPath = getSafePreviousFullPath(route.query)
   if (previousFullPath) {
     await router.replace(previousFullPath)

src/platform/cloud/onboarding/CloudSignupView.vue

@@ -141,6 +141,11 @@ import { useRoute, useRouter } from 'vue-router'
 import SignUpForm from '@/components/dialog/content/signin/SignUpForm.vue'
 import Button from '@/components/ui/button/Button.vue'
 import { useAuthActions } from '@/composables/auth/useAuthActions'
+import { useSessionCookie } from '@/platform/auth/session/useSessionCookie'
+import {
+  captureOAuthRequestId,
+  getOAuthRequestId
+} from '@/platform/cloud/oauth/oauthState'
 import { useFreeTierOnboarding } from '@/platform/cloud/onboarding/composables/useFreeTierOnboarding'
 import { getSafePreviousFullPath } from '@/platform/cloud/onboarding/utils/previousFullPath'
 import { isCloud } from '@/platform/distribution/types'
@@ -154,6 +159,7 @@ const { t } = useI18n()
 const router = useRouter()
 const route = useRoute()
 const authActions = useAuthActions()
+const sessionCookie = useSessionCookie()
 const isSecureContext = globalThis.isSecureContext
 const authError = ref('')
 const userIsInChina = ref(false)
@@ -179,6 +185,17 @@ const onSuccess = async () => {
     life: 2000
   })
 
+  captureOAuthRequestId(route.query)
+  const oauthRequestId = getOAuthRequestId()
+  if (oauthRequestId) {
+    await sessionCookie.createSessionOrThrow()
+    await router.push({
+      name: 'cloud-oauth-consent',
+      query: { oauth_request_id: oauthRequestId }
+    })
+    return
+  }
+
   const previousFullPath = getSafePreviousFullPath(route.query)
   if (previousFullPath) {
     await router.replace(previousFullPath)

src/platform/cloud/onboarding/onboardingCloudRoutes.ts

@@ -1,5 +1,20 @@
 import type { RouteRecordRaw } from 'vue-router'
 
+import {
+  captureOAuthRequestId,
+  getOAuthRequestId
+} from '@/platform/cloud/oauth/oauthState'
+
+function oauthConsentRedirect() {
+  const oauthRequestId = getOAuthRequestId()
+  return oauthRequestId
+    ? {
+        name: 'cloud-oauth-consent',
+        query: { oauth_request_id: oauthRequestId }
+      }
+    : { name: 'cloud-user-check' }
+}
+
 export const cloudOnboardingRoutes: RouteRecordRaw[] = [
   {
     path: '/cloud',
@@ -12,6 +27,7 @@ export const cloudOnboardingRoutes: RouteRecordRaw[] = [
         component: () =>
           import('@/platform/cloud/onboarding/CloudLoginView.vue'),
         beforeEnter: async (to, _from, next) => {
+          captureOAuthRequestId(to.query)
           // Only redirect if not explicitly switching accounts
           if (!to.query.switchAccount) {
             const { useCurrentUser } =
@@ -19,9 +35,7 @@ export const cloudOnboardingRoutes: RouteRecordRaw[] = [
             const { isLoggedIn } = useCurrentUser()
 
             if (isLoggedIn.value) {
-              // User is already logged in, redirect to user-check
-              // user-check will handle survey, or main page routing
-              return next({ name: 'cloud-user-check' })
+              return next(oauthConsentRedirect())
             }
           }
           next()
@@ -33,13 +47,14 @@ export const cloudOnboardingRoutes: RouteRecordRaw[] = [
         component: () =>
           import('@/platform/cloud/onboarding/CloudSignupView.vue'),
         beforeEnter: async (to, _from, next) => {
+          captureOAuthRequestId(to.query)
           if (!to.query.switchAccount) {
             const { useCurrentUser } =
               await import('@/composables/auth/useCurrentUser')
             const { isLoggedIn } = useCurrentUser()
 
             if (isLoggedIn.value) {
-              return next({ name: 'cloud-user-check' })
+              return next(oauthConsentRedirect())
             }
           }
           next()
@@ -58,6 +73,11 @@ export const cloudOnboardingRoutes: RouteRecordRaw[] = [
           import('@/platform/cloud/onboarding/CloudSurveyView.vue'),
         meta: { requiresAuth: true }
       },
+      {
+        path: 'oauth/consent',
+        name: 'cloud-oauth-consent',
+        component: () => import('@/platform/cloud/oauth/OAuthConsentView.vue')
+      },
       {
         path: 'user-check',
         name: 'cloud-user-check',

src/platform/navigation/preservedQueryNamespaces.ts

@@ -2,5 +2,6 @@ export const PRESERVED_QUERY_NAMESPACES = {
   TEMPLATE: 'template',
   INVITE: 'invite',
   SHARE: 'share',
-  CREATE_WORKSPACE: 'create_workspace'
+  CREATE_WORKSPACE: 'create_workspace',
+  OAUTH: 'oauth'
 } as const

src/platform/telemetry/providers/cloud/MixpanelTelemetryProvider.test.ts

@@ -75,6 +75,7 @@ const waitForMixpanelInit = () =>
   vi.waitFor(() => expect(mockMixpanel.init).toHaveBeenCalled())
 
 type ConfigWindow = { __CONFIG__?: { mixpanel_token?: string } }
+type DefineGlobal = typeof globalThis & { __DEV_SERVER_COMFYUI_URL__: string }
 
 describe('MixpanelTelemetryProvider — without configured token', () => {
   beforeEach(() => {
@@ -103,6 +104,7 @@ describe('MixpanelTelemetryProvider — without configured token', () => {
 describe('MixpanelTelemetryProvider — with configured token', () => {
   beforeEach(() => {
     vi.clearAllMocks()
+    ;(globalThis as DefineGlobal).__DEV_SERVER_COMFYUI_URL__ = ''
     ;(window as unknown as ConfigWindow).__CONFIG__ = {
       mixpanel_token: 'test-token'
     }
@@ -112,6 +114,26 @@ describe('MixpanelTelemetryProvider — with configured token', () => {
     mockNormalizeSurveyResponses.mockImplementation((responses) => responses)
   })
 
+  it('does not initialize Mixpanel for loopback cloud dev', () => {
+    ;(globalThis as DefineGlobal).__DEV_SERVER_COMFYUI_URL__ =
+      'http://localhost:8188'
+    const warn = vi.spyOn(console, 'warn').mockImplementation(() => undefined)
+
+    try {
+      const provider = new MixpanelTelemetryProvider()
+      provider.trackUserLoggedIn()
+
+      expect(warn).toHaveBeenCalledWith(
+        expect.stringContaining('disabled in local cloud dev')
+      )
+      expect(mockMixpanel.init).not.toHaveBeenCalled()
+      expect(mockMixpanel.track).not.toHaveBeenCalled()
+    } finally {
+      warn.mockRestore()
+      ;(globalThis as DefineGlobal).__DEV_SERVER_COMFYUI_URL__ = ''
+    }
+  })
+
   it('initializes Mixpanel and tracks events synchronously after the loaded callback fires', async () => {
     const provider = new MixpanelTelemetryProvider()
     await waitForMixpanelInit()

src/platform/telemetry/providers/cloud/MixpanelTelemetryProvider.ts

@@ -69,6 +69,8 @@ const DEFAULT_DISABLED_EVENTS = [
 const TELEMETRY_EVENT_SET = new Set<TelemetryEventName>(
   Object.values(TelemetryEvents) as TelemetryEventName[]
 )
+const localOriginPattern =
+  /^https?:\/\/(localhost|127\.0\.0\.1|\[::1\])(?::\d+)?(?:\/|$)/
 
 interface QueuedEvent {
   eventName: TelemetryEventName
@@ -96,6 +98,12 @@ export class MixpanelTelemetryProvider implements TelemetryProvider {
   private disabledEvents = new Set<TelemetryEventName>(DEFAULT_DISABLED_EVENTS)
 
   constructor() {
+    if (isLocalCloudDev()) {
+      console.warn('Mixpanel telemetry disabled in local cloud dev')
+      this.isEnabled = false
+      return
+    }
+
     this.configureDisabledEvents(
       (window.__CONFIG__ as Partial<RemoteConfig> | undefined) ?? null
     )
@@ -446,3 +454,9 @@ export class MixpanelTelemetryProvider implements TelemetryProvider {
     this.trackEvent(TelemetryEvents.UI_BUTTON_CLICKED, metadata)
   }
 }
+
+function isLocalCloudDev(): boolean {
+  return (
+    import.meta.env.DEV && localOriginPattern.test(__DEV_SERVER_COMFYUI_URL__)
+  )
+}

src/router.ts

@@ -15,6 +15,7 @@ import { useAuthStore } from '@/stores/authStore'
 import { useUserStore } from '@/stores/userStore'
 import LayoutDefault from '@/views/layouts/LayoutDefault.vue'
 
+import { captureOAuthRequestId } from '@/platform/cloud/oauth/oauthState'
 import { installPreservedQueryTracker } from '@/platform/navigation/preservedQueryTracker'
 import { PRESERVED_QUERY_NAMESPACES } from '@/platform/navigation/preservedQueryNamespaces'
 
@@ -110,9 +111,18 @@ installPreservedQueryTracker(router, [
   {
     namespace: PRESERVED_QUERY_NAMESPACES.CREATE_WORKSPACE,
     keys: ['create_workspace']
+  },
+  {
+    namespace: PRESERVED_QUERY_NAMESPACES.OAUTH,
+    keys: ['oauth_request_id']
   }
 ])
 
+router.beforeEach((to, _from, next) => {
+  captureOAuthRequestId(to.query)
+  next()
+})
+
 router.afterEach(() => {
   trackPageView()
 })
@@ -123,12 +133,14 @@ if (isCloud) {
     'cloud-login',
     'cloud-signup',
     'cloud-forgot-password',
+    'cloud-oauth-consent',
     'cloud-sorry-contact-support'
   ])
   const PUBLIC_ROUTE_PATHS = new Set([
     '/cloud/login',
     '/cloud/signup',
     '/cloud/forgot-password',
+    '/cloud/oauth/consent',
     '/cloud/sorry-contact-support'
   ])
 

vite.config.mts

@@ -88,6 +88,19 @@ const DEV_SEVER_FALLBACK_URL =
 const DEV_SERVER_COMFYUI_URL =
   DEV_SERVER_COMFYUI_ENV_URL || DEV_SEVER_FALLBACK_URL
 
+/** When cloud dev proxies the frontend at :5173 to a loopback ingest, registry routes must not hit ingest. */
+const LOCAL_LOOPBACK_COMFY_BACKEND_PATTERN =
+  /^https?:\/\/(localhost|127\.0\.0\.1|\[::1\])(?::\d+)?(?:\/|$)/i
+
+const CLOUD_REGISTRY_API_TARGET =
+  process.env.USE_PROD_CONFIG === 'true'
+    ? 'https://api.comfy.org'
+    : 'https://stagingapi.comfy.org'
+
+const PROXY_REGISTRY_FOR_LOCAL_CLOUD =
+  DISTRIBUTION === 'cloud' &&
+  LOCAL_LOOPBACK_COMFY_BACKEND_PATTERN.test(DEV_SERVER_COMFYUI_URL)
+
 const cloudProxyConfig =
   DISTRIBUTION === 'cloud' ? { secure: false, changeOrigin: true } : {}
 
@@ -203,6 +216,14 @@ export default defineConfig({
             return false
           }
 
+          // Cloud ingest does not host OSS ComfyUI /api/i18n; avoid hard-failing bootstrap.
+          const pathOnly = req.url?.split('?')[0]
+          if (DISTRIBUTION === 'cloud' && pathOnly === '/api/i18n') {
+            res.setHeader('Content-Type', 'application/json')
+            res.end(JSON.stringify({}))
+            return false
+          }
+
           // Bypass multi-user auth check from staging (cloud only)
           if (DISTRIBUTION === 'cloud' && req.url === '/api/users') {
             res.setHeader('Content-Type', 'application/json')
@@ -214,6 +235,26 @@ export default defineConfig({
         }
       },
 
+      '/oauth': {
+        target: DEV_SERVER_COMFYUI_URL,
+        ...cloudProxyConfig
+      },
+
+      ...(PROXY_REGISTRY_FOR_LOCAL_CLOUD
+        ? {
+            '/customers': {
+              target: CLOUD_REGISTRY_API_TARGET,
+              changeOrigin: true,
+              secure: true
+            },
+            '/releases': {
+              target: CLOUD_REGISTRY_API_TARGET,
+              changeOrigin: true,
+              secure: true
+            }
+          }
+        : {}),
+
       '/ws': {
         target: DEV_SERVER_COMFYUI_URL,
         ws: true,
@@ -625,6 +666,7 @@ export default defineConfig({
     __ALGOLIA_APP_ID__: JSON.stringify(process.env.ALGOLIA_APP_ID || ''),
     __ALGOLIA_API_KEY__: JSON.stringify(process.env.ALGOLIA_API_KEY || ''),
     __USE_PROD_CONFIG__: process.env.USE_PROD_CONFIG === 'true',
+    __DEV_SERVER_COMFYUI_URL__: JSON.stringify(DEV_SERVER_COMFYUI_URL),
     __DISTRIBUTION__: JSON.stringify(DISTRIBUTION),
     __IS_NIGHTLY__: JSON.stringify(IS_NIGHTLY)
   },

vitest.setup.ts

@@ -46,6 +46,7 @@ globalThis.__SENTRY_DSN__ = ''
 globalThis.__ALGOLIA_APP_ID__ = ''
 globalThis.__ALGOLIA_API_KEY__ = ''
 globalThis.__USE_PROD_CONFIG__ = false
+globalThis.__DEV_SERVER_COMFYUI_URL__ = ''
 globalThis.__DISTRIBUTION__ = 'localhost'
 globalThis.__IS_NIGHTLY__ = false