diff --git a/packages/app/src/cli/services/dev/fetch.test.ts b/packages/app/src/cli/services/dev/fetch.test.ts
index 406a04dc4b3..26e0d0870e8 100644
--- a/packages/app/src/cli/services/dev/fetch.test.ts
+++ b/packages/app/src/cli/services/dev/fetch.test.ts
@@ -45,9 +45,8 @@ afterEach(() => {
 })
 
 describe('fetchOrganizations', async () => {
-  test('returns fetched organizations from Partners and App Management for 1P development', async () => {
+  test('returns fetched organizations from available developer platform clients', async () => {
     // Given
-    vi.stubEnv('SHOPIFY_CLI_1P_DEV', 'true')
     vi.mocked(blockPartnersAccess).mockReturnValue(false)
     const partnersClient: PartnersClient = testDeveloperPlatformClient({
       organizations: () => Promise.resolve([ORG1]),
diff --git a/packages/app/src/cli/services/dev/processes/dev-session/dev-session-process.test.ts b/packages/app/src/cli/services/dev/processes/dev-session/dev-session-process.test.ts
index 96af8edb562..0ab4f8645d6 100644
--- a/packages/app/src/cli/services/dev/processes/dev-session/dev-session-process.test.ts
+++ b/packages/app/src/cli/services/dev/processes/dev-session/dev-session-process.test.ts
@@ -3,7 +3,6 @@ import {DevSessionStatusManager} from './dev-session-status-manager.js'
 import {DeveloperPlatformClient} from '../../../../utilities/developer-platform-client.js'
 import {AppLinkedInterface} from '../../../../models/app/app.js'
 import {AppEventWatcher} from '../../app-events/app-event-watcher.js'
-import {buildAppURLForWeb} from '../../../../utilities/app/app-url.js'
 import {
   testAppAccessConfigExtension,
   testAppLinked,
@@ -20,7 +19,6 @@ import {AbortSignal, AbortController} from '@shopify/cli-kit/node/abort'
 import {flushPromises} from '@shopify/cli-kit/node/promises'
 import * as outputContext from '@shopify/cli-kit/node/ui/components'
 import {readdir} from '@shopify/cli-kit/node/fs'
-import {firstPartyDev} from '@shopify/cli-kit/node/context/local'
 import {SerialBatchProcessor} from '@shopify/cli-kit/node/serial-batch-processor'
 
 vi.mock('@shopify/cli-kit/node/fs')
@@ -29,14 +27,6 @@ vi.mock('@shopify/cli-kit/node/http')
 vi.mock('../../../../utilities/app/app-url.js')
 vi.mock('node-fetch')
 vi.mock('../../../bundle.js')
-vi.mock('@shopify/cli-kit/node/context/local', async (importOriginal) => {
-  const original = await importOriginal<typeof import('@shopify/cli-kit/node/context/local')>()
-  return {
-    ...original,
-    firstPartyDev: vi.fn().mockReturnValue(false),
-  }
-})
-
 describe('setupDevSessionProcess', () => {
   test('returns a dev session process with correct configuration', async () => {
     // Given
@@ -50,7 +40,6 @@ describe('setupDevSessionProcess', () => {
       appId: 'app123',
       appWatcher: {} as AppEventWatcher,
       appPreviewURL: 'https://test.preview.url',
-      appLocalProxyURL: 'https://test.local.url',
       devSessionStatusManager: new DevSessionStatusManager(),
     }
 
@@ -72,7 +61,6 @@ describe('setupDevSessionProcess', () => {
         appId: options.appId,
         appWatcher: options.appWatcher,
         appPreviewURL: options.appPreviewURL,
-        appLocalProxyURL: options.appLocalProxyURL,
         devSessionStatusManager: options.devSessionStatusManager,
       },
     })
@@ -108,7 +96,6 @@ describe('pushUpdatesForDevSession', () => {
       appId: 'app123',
       organizationId: 'org123',
       appPreviewURL: 'https://test.preview.url',
-      appLocalProxyURL: 'https://test.local.url',
       devSessionStatusManager,
     }
   })
@@ -197,7 +184,6 @@ describe('pushUpdatesForDevSession', () => {
 
   test('handles scope changes and displays updated message', async () => {
     // Given
-    vi.mocked(buildAppURLForWeb).mockResolvedValue('https://test.myshopify.com/admin/apps/test')
     const appAccess = await testAppAccessConfigExtension(false, undefined, false)
     const event = {extensionEvents: [{type: 'updated', extension: appAccess}], app}
     const contextSpy = vi.spyOn(outputContext, 'useConcurrentOutputContext')
@@ -219,9 +205,8 @@ describe('pushUpdatesForDevSession', () => {
     contextSpy.mockRestore()
   })
 
-  test('updates preview URL to appPreviewURL by default (local dev console only for 1P devs)', async () => {
-    // Given - dev console is NOT shown by default (only for 1P devs)
-    vi.mocked(firstPartyDev).mockReturnValue(false)
+  test('updates preview URL to appPreviewURL when previewable extensions change', async () => {
+    // Given
     const extension = await testUIExtension({type: 'ui_extension'})
     const newApp = testAppLinked({allExtensions: [extension]})
 
@@ -236,24 +221,6 @@ describe('pushUpdatesForDevSession', () => {
     expect(devSessionStatusManager.status.previewURL).toBe(options.appPreviewURL)
   })
 
-  test('updates preview URL to appLocalProxyURL when 1P dev has previewable extensions', async () => {
-    // Given - dev console is shown for 1P devs with previewable extensions
-    vi.mocked(firstPartyDev).mockReturnValue(true)
-    const extension = await testUIExtension({type: 'ui_extension'})
-    const newApp = testAppLinked({allExtensions: [extension]})
-
-    // When
-    await pushUpdatesForDevSession({stderr, stdout, abortSignal: abortController.signal}, options)
-    await appWatcher.start({stdout, stderr, signal: abortController.signal})
-    await flushPromises()
-    appWatcher.emit('all', {app: newApp, extensionEvents: [{type: 'updated', extension}]})
-    await flushPromises()
-
-    // Then
-    expect(devSessionStatusManager.status.previewURL).toBe(options.appLocalProxyURL)
-    vi.mocked(firstPartyDev).mockReturnValue(false)
-  })
-
   test('updates preview URL to appPreviewURL when no previewable extensions', async () => {
     // Given
     const extension = await testFlowActionExtension()
diff --git a/packages/app/src/cli/services/dev/processes/dev-session/dev-session-process.ts b/packages/app/src/cli/services/dev/processes/dev-session/dev-session-process.ts
index a9d708a1c24..28c6a504850 100644
--- a/packages/app/src/cli/services/dev/processes/dev-session/dev-session-process.ts
+++ b/packages/app/src/cli/services/dev/processes/dev-session/dev-session-process.ts
@@ -15,7 +15,6 @@ export interface DevSessionProcessOptions {
   appId: string
   appWatcher: AppEventWatcher
   appPreviewURL: string
-  appLocalProxyURL: string
   devSessionStatusManager: DevSessionStatusManager
 }
 
diff --git a/packages/app/src/cli/services/dev/processes/dev-session/dev-session.ts b/packages/app/src/cli/services/dev/processes/dev-session/dev-session.ts
index 3c2856e6048..6a6c15d68f7 100644
--- a/packages/app/src/cli/services/dev/processes/dev-session/dev-session.ts
+++ b/packages/app/src/cli/services/dev/processes/dev-session/dev-session.ts
@@ -16,7 +16,7 @@ import {endHRTimeInMs, startHRTime} from '@shopify/cli-kit/node/hrtime'
 import {ClientError} from 'graphql-request'
 import {JsonMapType} from '@shopify/cli-kit/node/toml'
 import {AbortError} from '@shopify/cli-kit/node/error'
-import {firstPartyDev, isUnitTest} from '@shopify/cli-kit/node/context/local'
+import {isUnitTest} from '@shopify/cli-kit/node/context/local'
 import {dirname, joinPath} from '@shopify/cli-kit/node/path'
 import {readdir} from '@shopify/cli-kit/node/fs'
 import {SerialBatchProcessor} from '@shopify/cli-kit/node/serial-batch-processor'
@@ -260,18 +260,13 @@ export class DevSession {
   }
 
   /**
-   * Update the preview URL, it only changes if we move between a non-previewable state and a previewable state.
-   * (i.e. if we go from a state with no extensions to a state with ui-extensions or vice versa)
-   * Use local dev console only for 1P developers (SHOPIFY_CLI_1P_DEV is enabled).
+   * Update the preview URL when extension availability changes.
    * @param event - The app event
    */
   private updatePreviewURL(event: AppEvent) {
-    const hasPreview = event.app.allExtensions.filter((ext) => ext.isPreviewable).length > 0
-    const useDevConsole = firstPartyDev() && hasPreview
-    const newPreviewURL = useDevConsole ? this.options.appLocalProxyURL : this.options.appPreviewURL
     const hasExtensions = event.app.nonConfigExtensions.length > 0
     this.statusManager.updateStatus({
-      previewURL: newPreviewURL,
+      previewURL: this.options.appPreviewURL,
       appEmbedded: event.app.configuration.embedded,
       hasExtensions,
     })
diff --git a/packages/app/src/cli/services/dev/processes/setup-dev-processes.test.ts b/packages/app/src/cli/services/dev/processes/setup-dev-processes.test.ts
index 06ad0ad0f00..c396448bd7e 100644
--- a/packages/app/src/cli/services/dev/processes/setup-dev-processes.test.ts
+++ b/packages/app/src/cli/services/dev/processes/setup-dev-processes.test.ts
@@ -37,7 +37,6 @@ import {Config} from '@oclif/core'
 import {getEnvironmentVariables} from '@shopify/cli-kit/node/environment'
 import {isStorefrontPasswordProtected} from '@shopify/theme'
 import {fetchTheme} from '@shopify/cli-kit/node/themes/api'
-import {firstPartyDev} from '@shopify/cli-kit/node/context/local'
 import {adminFqdn} from '@shopify/cli-kit/node/context/fqdn'
 
 vi.mock('../../context/identifiers.js')
@@ -46,7 +45,6 @@ vi.mock('../fetch.js')
 vi.mock('@shopify/cli-kit/node/environment')
 vi.mock('@shopify/theme')
 vi.mock('@shopify/cli-kit/node/themes/api')
-vi.mock('@shopify/cli-kit/node/context/local')
 vi.mock('@shopify/cli-kit/node/context/fqdn', async (importOriginal) => {
   const original = await importOriginal<typeof import('@shopify/cli-kit/node/context/fqdn')>()
   return {
@@ -79,8 +77,6 @@ beforeEach(() => {
     role: 'theme',
     processing: false,
   })
-  // By default, firstPartyDev is false (local dev console only shown for 1P devs)
-  vi.mocked(firstPartyDev).mockReturnValue(false)
   vi.mocked(adminFqdn).mockResolvedValue('admin.shopify.com')
 })
 
@@ -178,7 +174,6 @@ describe('setup-dev-processes', () => {
       graphiqlKey,
     })
 
-    // Dev console is NOT shown by default (only shown for 1P devs)
     expect(res.previewUrl).toBe('https://admin.shopify.com/store/store/apps/api-key?dev-console=show')
     expect(res.processes[0]).toMatchObject({
       type: 'web',
diff --git a/packages/app/src/cli/services/dev/processes/setup-dev-processes.ts b/packages/app/src/cli/services/dev/processes/setup-dev-processes.ts
index 9feb2b29f07..04a78e30c96 100644
--- a/packages/app/src/cli/services/dev/processes/setup-dev-processes.ts
+++ b/packages/app/src/cli/services/dev/processes/setup-dev-processes.ts
@@ -15,7 +15,7 @@ import {AppLinkedInterface, getAppScopes, WebType} from '../../../models/app/app
 import {OrganizationApp} from '../../../models/organization.js'
 import {DevOptions} from '../../dev.js'
 import {LocalhostCert, getProxyingWebServer} from '../../../utilities/app/http-reverse-proxy.js'
-import {buildAppURLForAdmin, buildAppURLForWeb} from '../../../utilities/app/app-url.js'
+import {buildAppURLForAdmin} from '../../../utilities/app/app-url.js'
 import {ApplicationURLs} from '../urls.js'
 import {DeveloperPlatformClient} from '../../../utilities/developer-platform-client.js'
 import {AppEventWatcher} from '../app-events/app-event-watcher.js'
@@ -23,7 +23,6 @@ import {reloadApp} from '../../../models/app/loader.js'
 import {resolveGraphiQLKey} from '@shopify/cli-kit/node/graphiql/server'
 import {getAvailableTCPPort} from '@shopify/cli-kit/node/tcp'
 import {isTruthy} from '@shopify/cli-kit/node/context/utilities'
-import {firstPartyDev} from '@shopify/cli-kit/node/context/local'
 import {getEnvironmentVariables} from '@shopify/cli-kit/node/environment'
 import {outputInfo} from '@shopify/cli-kit/node/output'
 import {adminFqdn} from '@shopify/cli-kit/node/context/fqdn'
@@ -99,26 +98,9 @@ export async function setupDevProcesses({
   const reloadedApp = await reloadApp(localApp)
   const appWatcher = new AppEventWatcher(reloadedApp, network.proxyUrl)
 
-  // Decide on the appropriate preview URL for a session with these processes
-  // - 1P developers with previewable extensions: use local dev console
-  // - 1P developers without previewable extensions: use legacy OAuth redirect URL
-  // - 3P developers: use unified admin URL
-  const anyPreviewableExtensions = reloadedApp.allExtensions.some((ext) => ext.isPreviewable)
-  const devConsoleURL = `${network.proxyUrl}/extensions/dev-console`
-  const is1PDev = firstPartyDev()
-
-  // appPreviewUrl is the direct app URL (used by GraphiQL and dev session fallback)
-  // previewURL is what's shown to the user (may be dev console for 1P devs)
-  let appPreviewUrl: string
-  if (is1PDev) {
-    appPreviewUrl = buildAppURLForWeb(storeFqdn, apiKey)
-  } else {
-    const adminDomain = await adminFqdn()
-    appPreviewUrl = buildAppURLForAdmin(storeFqdn, apiKey, adminDomain)
-  }
-
-  const useDevConsole = is1PDev && anyPreviewableExtensions
-  const previewURL = useDevConsole ? devConsoleURL : appPreviewUrl
+  const adminDomain = await adminFqdn()
+  const appPreviewUrl = buildAppURLForAdmin(storeFqdn, apiKey, adminDomain)
+  const previewURL = appPreviewUrl
 
   const resolvedGraphiqlKey = resolveGraphiQLKey(graphiqlKey, apiSecret, storeFqdn)
   const graphiqlURL = shouldRenderGraphiQL
@@ -182,7 +164,6 @@ export async function setupDevProcesses({
           storeFqdn,
           appWatcher,
           appPreviewURL: appPreviewUrl,
-          appLocalProxyURL: devConsoleURL,
           devSessionStatusManager,
         })
       : await setupDraftableExtensionsProcess({
diff --git a/packages/app/src/cli/services/dev/select-store.test.ts b/packages/app/src/cli/services/dev/select-store.test.ts
index 9cf01784501..d9303d9aa31 100644
--- a/packages/app/src/cli/services/dev/select-store.test.ts
+++ b/packages/app/src/cli/services/dev/select-store.test.ts
@@ -13,7 +13,6 @@ import {describe, expect, vi, test} from 'vitest'
 
 vi.mock('../../prompts/dev')
 vi.mock('./fetch')
-vi.mock('@shopify/cli-kit/node/context/local')
 vi.mock('@shopify/cli-kit/node/system')
 vi.mock('@shopify/cli-kit/node/ui')
 
diff --git a/packages/app/src/cli/services/dev/select-store.ts b/packages/app/src/cli/services/dev/select-store.ts
index d02c8969ee0..b19045c3c91 100644
--- a/packages/app/src/cli/services/dev/select-store.ts
+++ b/packages/app/src/cli/services/dev/select-store.ts
@@ -11,7 +11,6 @@ import {
 import {ClientName, DeveloperPlatformClient, Paginateable} from '../../utilities/developer-platform-client.js'
 import {sleep} from '@shopify/cli-kit/node/system'
 import {renderInfo, renderTasks} from '@shopify/cli-kit/node/ui'
-import {firstPartyDev} from '@shopify/cli-kit/node/context/local'
 import {AbortError, BugError, CancelExecution} from '@shopify/cli-kit/node/error'
 import {outputSuccess} from '@shopify/cli-kit/node/output'
 
@@ -130,7 +129,7 @@ export async function convertToTransferDisabledStoreIfNeeded(
   developerPlatformClient: DeveloperPlatformClient,
   conversionMode: 'prompt-first' | 'never',
 ): Promise<boolean> {
-  if (store.transferDisabled || firstPartyDev()) return true
+  if (store.transferDisabled) return true
 
   if (!store.transferDisabled && !store.convertableToPartnerTest) {
     throw new AbortError(
diff --git a/packages/app/src/cli/utilities/developer-platform-client.ts b/packages/app/src/cli/utilities/developer-platform-client.ts
index b058f1b407f..e8959910772 100644
--- a/packages/app/src/cli/utilities/developer-platform-client.ts
+++ b/packages/app/src/cli/utilities/developer-platform-client.ts
@@ -62,7 +62,6 @@ import {TokenItem} from '@shopify/cli-kit/node/ui'
 import {blockPartnersAccess} from '@shopify/cli-kit/node/environment'
 import {UnauthorizedHandler} from '@shopify/cli-kit/node/api/graphql'
 import {JsonMapType} from '@shopify/cli-kit/node/toml'
-import {firstPartyDev} from '@shopify/cli-kit/node/context/local'
 
 export type {Store} from '../api/graphql/business-platform-organizations/generated/types.js'
 
@@ -109,8 +108,6 @@ function selectDeveloperPlatformClientByOrg(organization: Organization): Develop
 }
 
 function defaultDeveloperPlatformClient(): DeveloperPlatformClient {
-  if (firstPartyDev() && !blockPartnersAccess()) return PartnersClient.getInstance()
-
   return AppManagementClient.getInstance()
 }
 
diff --git a/packages/cli-kit/src/private/node/api/headers.test.ts b/packages/cli-kit/src/private/node/api/headers.test.ts
index c27668fc7ad..ca5fc50ae76 100644
--- a/packages/cli-kit/src/private/node/api/headers.test.ts
+++ b/packages/cli-kit/src/private/node/api/headers.test.ts
@@ -1,7 +1,7 @@
 import {buildHeaders, sanitizedHeadersOutput, GraphQLClientError} from './headers.js'
 import {CLI_KIT_VERSION} from '../../../public/common/version.js'
 import {randomUUID} from '../../../public/node/crypto.js'
-import {firstPartyDev, isUnitTest} from '../../../public/node/context/local.js'
+import {isUnitTest} from '../../../public/node/context/local.js'
 
 import {test, vi, expect, describe, beforeEach} from 'vitest'
 
@@ -14,30 +14,9 @@ beforeEach(() => {
 })
 
 describe('common API methods', () => {
-  test('headers are built correctly when firstPartyDev yields true', () => {
+  test('headers are built correctly', () => {
     // Given
     vi.mocked(randomUUID).mockReturnValue('random-uuid')
-    vi.mocked(firstPartyDev).mockReturnValue(true)
-    // When
-    const headers = buildHeaders('my-token')
-
-    // Then
-    const version = CLI_KIT_VERSION
-    expect(headers).toEqual({
-      'Content-Type': 'application/json',
-      'Keep-Alive': 'timeout=30',
-      'X-Shopify-Access-Token': 'Bearer my-token',
-      'User-Agent': `Shopify CLI; v=${version}`,
-      authorization: 'Bearer my-token',
-      'Sec-CH-UA-PLATFORM': process.platform,
-      'X-Shopify-Cli-Employee': '1',
-    })
-  })
-
-  test('when user is not employee, do not include header', () => {
-    // Given
-    vi.mocked(randomUUID).mockReturnValue('random-uuid')
-    vi.mocked(firstPartyDev).mockReturnValue(false)
     // When
     const headers = buildHeaders('my-token')
 
@@ -58,7 +37,6 @@ describe('common API methods', () => {
     (prefix) => {
       // Given
       vi.mocked(randomUUID).mockReturnValue('random-uuid')
-      vi.mocked(firstPartyDev).mockReturnValue(false)
       const token = `${prefix}_my_token`
       // When
       const headers = buildHeaders(token)
diff --git a/packages/cli-kit/src/private/node/api/headers.ts b/packages/cli-kit/src/private/node/api/headers.ts
index 47095a323ce..c5947d24582 100644
--- a/packages/cli-kit/src/private/node/api/headers.ts
+++ b/packages/cli-kit/src/private/node/api/headers.ts
@@ -1,5 +1,5 @@
 import {CLI_KIT_VERSION} from '../../../public/common/version.js'
-import {firstPartyDev, isUnitTest, isVerbose} from '../../../public/node/context/local.js'
+import {isUnitTest, isVerbose} from '../../../public/node/context/local.js'
 import {AbortError} from '../../../public/node/error.js'
 import https from 'https'
 
@@ -60,7 +60,6 @@ export function buildHeaders(token?: string): Record<string, string> {
     // 'Sec-CH-UA': secCHUA, This header requires the Git sha.
     'Sec-CH-UA-PLATFORM': process.platform,
     'Content-Type': 'application/json',
-    ...(firstPartyDev() && {'X-Shopify-Cli-Employee': '1'}),
   }
   if (token) {
     const authString = token.match(/^shp(at|ua|ca|tka)/) ? token : `Bearer ${token}`
diff --git a/packages/cli-kit/src/private/node/constants.ts b/packages/cli-kit/src/private/node/constants.ts
index a38e83f2d90..4063fbd99ee 100644
--- a/packages/cli-kit/src/private/node/constants.ts
+++ b/packages/cli-kit/src/private/node/constants.ts
@@ -19,7 +19,6 @@ export const environmentVariables = {
   doctor: 'SHOPIFY_CLI_DOCTOR',
   enableCliRedirect: 'SHOPIFY_CLI_ENABLE_CLI_REDIRECT',
   env: 'SHOPIFY_CLI_ENV',
-  firstPartyDev: 'SHOPIFY_CLI_1P_DEV',
   noAnalytics: 'SHOPIFY_CLI_NO_ANALYTICS',
   optOutInstrumentation: 'OPT_OUT_INSTRUMENTATION',
   appAutomationToken: 'SHOPIFY_APP_AUTOMATION_TOKEN',
diff --git a/packages/cli-kit/src/private/node/session.ts b/packages/cli-kit/src/private/node/session.ts
index 3b750d1cdcb..da07727fca1 100644
--- a/packages/cli-kit/src/private/node/session.ts
+++ b/packages/cli-kit/src/private/node/session.ts
@@ -16,7 +16,7 @@ import {isThemeAccessSession} from './api/rest.js'
 import {getCurrentSessionId, setCurrentSessionId} from './conf-store.js'
 import {UserEmailQueryString, UserEmailQuery} from './api/graphql/business-platform-destinations/user-email.js'
 import {outputContent, outputToken, outputDebug, outputCompleted} from '../../public/node/output.js'
-import {firstPartyDev, themeToken} from '../../public/node/context/local.js'
+import {themeToken} from '../../public/node/context/local.js'
 import {AbortError} from '../../public/node/error.js'
 import {normalizeStoreFqdn, identityFqdn} from '../../public/node/context/fqdn.js'
 import {getIdentityTokenInformation, getAppAutomationToken} from '../../public/node/environment.js'
@@ -296,10 +296,6 @@ async function executeCompleteFlow(applications: OAuthApplications, existingAlia
   const scopes = getFlattenScopes(applications)
   const exchangeScopes = getExchangeScopes(applications)
   const store = applications.adminApi?.storeFqdn
-  if (firstPartyDev()) {
-    outputDebug(outputContent`Authenticating as Shopify Employee...`)
-    scopes.push('employee')
-  }
 
   let identityToken: IdentityToken
   const identityTokenInformation = getIdentityTokenInformation()
diff --git a/packages/cli-kit/src/private/node/session/validate.test.ts b/packages/cli-kit/src/private/node/session/validate.test.ts
index 12f8300b683..51df0fc5662 100644
--- a/packages/cli-kit/src/private/node/session/validate.test.ts
+++ b/packages/cli-kit/src/private/node/session/validate.test.ts
@@ -140,6 +140,20 @@ describe('validateSession', () => {
     expect(got).toBe('needs_full_auth')
   })
 
+  test('returns needs_full_auth if cached identity has employee scope', async () => {
+    // Given
+    const session = {
+      identity: {...validIdentity, scopes: [...validIdentity.scopes, 'employee']},
+      applications: validApplications,
+    }
+
+    // When
+    const got = await validateSession(requestedScopes, defaultApps, session)
+
+    // Then
+    expect(got).toBe('needs_full_auth')
+  })
+
   test('returns needs_refresh if identity is expired', async () => {
     // Given
     const session = {
diff --git a/packages/cli-kit/src/private/node/session/validate.ts b/packages/cli-kit/src/private/node/session/validate.ts
index d4b79799284..362457b2bb1 100644
--- a/packages/cli-kit/src/private/node/session/validate.ts
+++ b/packages/cli-kit/src/private/node/session/validate.ts
@@ -2,7 +2,6 @@ import {ApplicationToken, IdentityToken, Session, validateCachedIdentityTokenStr
 
 import {applicationId} from './identity.js'
 import {sessionConstants} from '../constants.js'
-import {firstPartyDev} from '../../../public/node/context/local.js'
 import {OAuthApplications} from '../session.js'
 import {outputDebug} from '../../../public/node/output.js'
 
@@ -13,7 +12,7 @@ type ValidationResult = 'needs_refresh' | 'needs_full_auth' | 'ok'
  */
 function validateScopes(requestedScopes: string[], identity: IdentityToken) {
   const currentScopes = identity.scopes
-  if (firstPartyDev() !== currentScopes.includes('employee')) return false
+  if (currentScopes.includes('employee')) return false
   return requestedScopes.every((scope) => currentScopes.includes(scope))
 }
 
diff --git a/packages/cli-kit/src/public/node/context/local.ts b/packages/cli-kit/src/public/node/context/local.ts
index ad816399db9..c39093c65e6 100644
--- a/packages/cli-kit/src/public/node/context/local.ts
+++ b/packages/cli-kit/src/public/node/context/local.ts
@@ -135,16 +135,6 @@ export function alwaysLogMetrics(env = process.env): boolean {
   return isTruthy(env[environmentVariables.alwaysLogMetrics])
 }
 
-/**
- * Returns true if the CLI User is 1P.
- *
- * @param env - The environment variables from the environment of the current process.
- * @returns True if SHOPIFY_CLI_1P is truthy.
- */
-export function firstPartyDev(env = process.env): boolean {
-  return isTruthy(env[environmentVariables.firstPartyDev])
-}
-
 /**
  * Returns true if the CLI can run the "doctor-release" command.
  *
diff --git a/packages/e2e/setup/env.ts b/packages/e2e/setup/env.ts
index 625bf5f23f4..37858cf50e2 100644
--- a/packages/e2e/setup/env.ts
+++ b/packages/e2e/setup/env.ts
@@ -183,7 +183,6 @@ export const envFixture = base.extend<{testSection: void}, {env: E2EEnv}>({
         SHOPIFY_CLI_NO_ANALYTICS: '1',
         NODE_OPTIONS: '',
         CI: '1',
-        SHOPIFY_CLI_1P_DEV: undefined,
         SHOPIFY_FLAG_CLIENT_ID: undefined,
       }
 
diff --git a/packages/e2e/setup/global-auth.ts b/packages/e2e/setup/global-auth.ts
index a0adee5461d..2a0b761aed3 100644
--- a/packages/e2e/setup/global-auth.ts
+++ b/packages/e2e/setup/global-auth.ts
@@ -55,7 +55,6 @@ export default async function globalSetup() {
     SHOPIFY_CLI_NO_ANALYTICS: '1',
     NODE_OPTIONS: '',
     CI: '1',
-    SHOPIFY_CLI_1P_DEV: undefined,
     SHOPIFY_FLAG_CLIENT_ID: undefined,
   }