diff --git a/src/main/codex-accounts/runtime-home-system-resource-materialization.test.ts b/src/main/codex-accounts/runtime-home-system-resource-materialization.test.ts
index b4389c0eea1..f95b3b81996 100644
--- a/src/main/codex-accounts/runtime-home-system-resource-materialization.test.ts
+++ b/src/main/codex-accounts/runtime-home-system-resource-materialization.test.ts
@@ -1,5 +1,12 @@
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
-import { existsSync, mkdirSync, readFileSync, writeFileSync } from 'node:fs'
+import {
+  existsSync,
+  mkdirSync,
+  readFileSync,
+  realpathSync,
+  symlinkSync,
+  writeFileSync
+} from 'node:fs'
 import { join } from 'node:path'
 import { createSettings } from './runtime-home-settings-test-fixtures'
 import {
@@ -59,6 +66,85 @@ describe('CodexRuntimeHomeService', () => {
     )
   })
 
+  it('keeps the Codex app bundled marketplace loadable from the managed home', async () => {
+    const systemCodexHome = getSystemCodexHomePath()
+    const systemMarketplace = join(
+      systemCodexHome,
+      '.tmp',
+      'bundled-marketplaces',
+      'openai-bundled'
+    )
+    mkdirSync(systemMarketplace, { recursive: true })
+    const userMarketplace = join(testState.fakeHomeDir, 'marketplaces', 'mine')
+    const canonicalConfig = [
+      '[marketplaces.openai-bundled]',
+      'source_type = "local"',
+      `source = '${systemMarketplace}'`,
+      '',
+      '[marketplaces.mine]',
+      'source_type = "local"',
+      `source = '${userMarketplace}'`,
+      ''
+    ].join('\n')
+    writeFileSync(join(systemCodexHome, 'config.toml'), canonicalConfig, 'utf-8')
+    const store = createStore(createSettings())
+    const { CodexRuntimeHomeService } = await import('./runtime-home-service')
+    const service = new CodexRuntimeHomeService(store as never)
+
+    service.prepareForCodexLaunch()
+    service.prepareForCodexLaunch()
+
+    // Codex rejects openai-bundled unless its source is under the active CODEX_HOME.
+    const runtimeMarketplace = join(
+      realpathSync.native(getRuntimeCodexHomePath()),
+      '.tmp',
+      'bundled-marketplaces',
+      'openai-bundled'
+    )
+    const runtimeConfig = readFileSync(join(getRuntimeCodexHomePath(), 'config.toml'), 'utf-8')
+    expect(runtimeConfig).toContain(`source = '${runtimeMarketplace}'`)
+    expect(runtimeConfig).toContain(`source = '${userMarketplace}'`)
+    expect(existsSync(runtimeMarketplace)).toBe(true)
+    expect(readFileSync(join(systemCodexHome, 'config.toml'), 'utf-8')).toBe(canonicalConfig)
+  })
+
+  it('rebases the bundled marketplace onto the canonical path of a symlinked managed home', async () => {
+    const systemMarketplace = join(
+      getSystemCodexHomePath(),
+      '.tmp',
+      'bundled-marketplaces',
+      'openai-bundled'
+    )
+    mkdirSync(systemMarketplace, { recursive: true })
+    writeFileSync(
+      join(getSystemCodexHomePath(), 'config.toml'),
+      `[marketplaces.openai-bundled]\nsource_type = "local"\nsource = '${systemMarketplace}'\n`,
+      'utf-8'
+    )
+    const linkedUserData = join(testState.fakeHomeDir, 'linked-user-data')
+    symlinkSync(testState.userDataDir, linkedUserData, 'junction')
+    process.env.ORCA_USER_DATA_PATH = linkedUserData
+    const store = createStore(createSettings())
+    const { CodexRuntimeHomeService } = await import('./runtime-home-service')
+    const service = new CodexRuntimeHomeService(store as never)
+
+    service.prepareForCodexLaunch()
+
+    // Codex compares against its canonicalized CODEX_HOME, so the source must not keep the link.
+    const canonicalMarketplace = join(
+      realpathSync.native(testState.userDataDir),
+      'codex-runtime-home',
+      'home',
+      '.tmp',
+      'bundled-marketplaces',
+      'openai-bundled'
+    )
+    expect(readFileSync(join(getRuntimeCodexHomePath(), 'config.toml'), 'utf-8')).toContain(
+      `source = '${canonicalMarketplace}'`
+    )
+    expect(existsSync(canonicalMarketplace)).toBe(true)
+  })
+
   it('launches the system-default custom provider without requiring OAuth auth', async () => {
     const systemCodexHome = getSystemCodexHomePath()
     const canonicalConfigPath = join(systemCodexHome, 'config.toml')
diff --git a/src/main/codex/codex-config-mirror.ts b/src/main/codex/codex-config-mirror.ts
index 6ead142a9e4..0722810c72e 100644
--- a/src/main/codex/codex-config-mirror.ts
+++ b/src/main/codex/codex-config-mirror.ts
@@ -7,7 +7,10 @@ import {
   writeFileAtomicallyIfUnchanged
 } from '../codex-accounts/fs-utils'
 import { getOrcaManagedCodexHomePath, getSystemCodexHomePath } from './codex-home-paths'
-import { rewriteRelativePathConfigValues } from './codex-config-path-reference-rewrite'
+import {
+  rebaseBundledMarketplaceSources,
+  rewriteRelativePathConfigValues
+} from './codex-config-path-reference-rewrite'
 import { normalizeDeprecatedCodexHookFeatureFlag } from './config-toml-deprecated-hook-flag'
 import { parseWslUncPath } from '../../shared/wsl-paths'
 import {
@@ -144,11 +147,19 @@ export function syncSystemConfigIntoLegacySharedCodexHome(
       runtimeConfigBeforeMirror !== null
         ? mergeSystemCodexConfigIntoRuntime(
             runtimeConfigBeforeMirror,
-            prepareSystemConfigForRuntimeMirror(rawSystemConfig, sourceConfigDir),
+            prepareSystemConfigForRuntimeMirror(
+              rawSystemConfig,
+              sourceConfigDir,
+              homes.runtimeHomePath
+            ),
             sourceConfigDir,
             ...readLegacySharedHomeMcpOwnership(homes.runtimeHomePath)
           )
-        : prepareSystemConfigForFreshRuntimeMirror(rawSystemConfig, sourceConfigDir)
+        : prepareSystemConfigForFreshRuntimeMirror(
+            rawSystemConfig,
+            sourceConfigDir,
+            homes.runtimeHomePath
+          )
   }
   const nextRuntimeConfig = applyCodexDaemonSocketGuard(
     mirroredRuntimeConfig,
@@ -226,7 +237,7 @@ function syncSystemConfigIntoManagedCodexHomeUnsafe(
   const sourceConfigDir = resolveCodexConfigMirrorSourceDirectory(systemHomePath, systemConfigDir)
   if (!runtimeConfigExists) {
     const freshRuntimeConfig = applyCodexDaemonSocketGuard(
-      prepareSystemConfigForFreshRuntimeMirror(rawSystemConfig, sourceConfigDir),
+      prepareSystemConfigForFreshRuntimeMirror(rawSystemConfig, sourceConfigDir, runtimeHomePath),
       runtimeHomePath
     )
     const ownership = readMcpServerTomlOwnership(freshRuntimeConfig)
@@ -239,7 +250,11 @@ function syncSystemConfigIntoManagedCodexHomeUnsafe(
     }
   }
 
-  const systemConfig = prepareSystemConfigForRuntimeMirror(rawSystemConfig, sourceConfigDir)
+  const systemConfig = prepareSystemConfigForRuntimeMirror(
+    rawSystemConfig,
+    sourceConfigDir,
+    runtimeHomePath
+  )
   const { names: mirroredMcpServerNames, ownsRoot: mirroredMcpServerRoot } =
     readMcpServerTomlOwnership(systemConfig)
   // Reuse the observed snapshot rather than mixing reads across path-state changes.
@@ -277,21 +292,30 @@ export function resolveCodexConfigMirrorSourceDirectory(
   )
 }
 
-function prepareSystemConfigForRuntimeMirror(config: string, systemConfigDir: string): string {
-  return rewriteRelativePathConfigValues(
+function prepareSystemConfigForRuntimeMirror(
+  config: string,
+  systemConfigDir: string,
+  runtimeHomePath?: string
+): string {
+  const prepared = rewriteRelativePathConfigValues(
     normalizeDeprecatedCodexHookFeatureFlag(config),
     systemConfigDir
   )
+  // WSL guest homes do not receive host resource links.
+  return runtimeHomePath && !parseWslUncPath(runtimeHomePath)
+    ? rebaseBundledMarketplaceSources(prepared, systemConfigDir, runtimeHomePath)
+    : prepared
 }
 
 // Install re-keys user-hook trust; plugin/project trust carries unchanged.
 // WSL systemConfigDir must name the Linux-side config directory.
 export function prepareSystemConfigForFreshRuntimeMirror(
   config: string,
-  systemConfigDir: string
+  systemConfigDir: string,
+  runtimeHomePath?: string
 ): string {
   return stripRuntimeOwnedTomlSections(
-    prepareSystemConfigForRuntimeMirror(config, systemConfigDir),
+    prepareSystemConfigForRuntimeMirror(config, systemConfigDir, runtimeHomePath),
     new Set(),
     { systemHomeDir: systemConfigDir, runtimeHookTrustKeys: new Set() }
   )
diff --git a/src/main/codex/codex-config-path-reference-rewrite.ts b/src/main/codex/codex-config-path-reference-rewrite.ts
index 7fbbf1a5000..0916f1d3b1f 100644
--- a/src/main/codex/codex-config-path-reference-rewrite.ts
+++ b/src/main/codex/codex-config-path-reference-rewrite.ts
@@ -1,4 +1,9 @@
-import { posix as pathPosix, win32 as pathWin32 } from 'node:path'
+import { realpathSync } from 'node:fs'
+import { join, posix as pathPosix, resolve, win32 as pathWin32 } from 'node:path'
+import {
+  CODEX_BUNDLED_MARKETPLACE_NAMES,
+  CODEX_BUNDLED_MARKETPLACES_ENTRY
+} from './codex-home-paths'
 import {
   createTomlLineScanState,
   getTomlTableHeader,
@@ -23,6 +28,56 @@ const EXACT_PATH_CONFIG_KEYS = new Set([
 // Preserve original path targets when moving config.toml to a managed home.
 // Inline tables, quoted keys and multiline strings pass through unchanged.
 export function rewriteRelativePathConfigValues(config: string, sourceConfigDir: string): string {
+  // WSL reads config over UNC but consumes it in Linux; join using the source home's path style.
+  const path = sourceConfigDir.startsWith('/') ? pathPosix : pathWin32
+  return rewriteTomlStringSettings(config, (keyPath, value) =>
+    isPathConfigKey(keyPath) && shouldRewriteRelativePath(value)
+      ? path.join(sourceConfigDir, value)
+      : null
+  )
+}
+
+// Codex only trusts openai-bundled marketplaces whose source sits under the canonical CODEX_HOME.
+export function rebaseBundledMarketplaceSources(
+  config: string,
+  systemHomeDir: string,
+  runtimeHomeDir: string
+): string {
+  const systemHomeDirs = [systemHomeDir, resolveRealPath(systemHomeDir)]
+  const canonicalRuntimeHomeDir = resolveRealPath(runtimeHomeDir)
+  return rewriteTomlStringSettings(config, (keyPath, value) => {
+    const name = CODEX_BUNDLED_MARKETPLACE_NAMES.find(
+      (candidate) => keyPath === `marketplaces.${candidate}.source`
+    )
+    const pointsAtSystemHome =
+      name !== undefined &&
+      systemHomeDirs.some((dir) =>
+        isSamePath(value, join(dir, CODEX_BUNDLED_MARKETPLACES_ENTRY, name))
+      )
+    return pointsAtSystemHome
+      ? join(canonicalRuntimeHomeDir, CODEX_BUNDLED_MARKETPLACES_ENTRY, name)
+      : null
+  })
+}
+
+function resolveRealPath(path: string): string {
+  try {
+    return realpathSync.native(path)
+  } catch {
+    return path
+  }
+}
+
+function isSamePath(left: string, right: string): boolean {
+  return process.platform === 'win32'
+    ? resolve(left).toLowerCase() === resolve(right).toLowerCase()
+    : resolve(left) === resolve(right)
+}
+
+function rewriteTomlStringSettings(
+  config: string,
+  rewrite: (keyPath: string, value: string) => string | null
+): string {
   const lines = config.split('\n')
   let tablePath = ''
   let scanState = createTomlLineScanState()
@@ -32,9 +87,9 @@ export function rewriteRelativePathConfigValues(config: string, sourceConfigDir:
     if (isTomlStructuralLine(scanState)) {
       const header = getTomlTableHeader(line)
       if (header) {
-        tablePath = getTomlHeaderPath(header)
+        tablePath = normalizeTomlPathExpression(getTomlHeaderPath(header))
       } else {
-        lines[index] = rewriteRelativePathConfigLine(line, tablePath, sourceConfigDir)
+        lines[index] = rewriteTomlStringSettingLine(line, tablePath, rewrite)
       }
     }
     scanState = updateTomlLineScanState(scanState, line)
@@ -43,37 +98,25 @@ export function rewriteRelativePathConfigValues(config: string, sourceConfigDir:
   return lines.join('\n')
 }
 
-function rewriteRelativePathConfigLine(
+function rewriteTomlStringSettingLine(
   line: string,
   tablePath: string,
-  sourceConfigDir: string
+  rewrite: (keyPath: string, value: string) => string | null
 ): string {
   const equalsIndex = line.indexOf('=')
   if (equalsIndex === -1) {
     return line
   }
-
-  const key = line.slice(0, equalsIndex).trim()
-  if (!isPathConfigKey(tablePath, key)) {
-    return line
-  }
-
+  const key = normalizeTomlPathExpression(line.slice(0, equalsIndex).trim())
   const parsed = parseTomlSingleLineStringValue(line, equalsIndex + 1)
-  if (!parsed || !shouldRewriteRelativePath(parsed.value)) {
+  const rewritten = parsed && rewrite(tablePath ? `${tablePath}.${key}` : key, parsed.value)
+  if (!parsed || rewritten === null) {
     return line
   }
-
-  // WSL reads config over UNC but consumes it in Linux; join using the source home's path style.
-  const path = sourceConfigDir.startsWith('/') ? pathPosix : pathWin32
-  const absolutePath = path.join(sourceConfigDir, parsed.value)
-  return `${line.slice(0, parsed.start)}${quoteTomlPath(absolutePath)}${line.slice(parsed.end)}`
+  return `${line.slice(0, parsed.start)}${quoteTomlPath(rewritten)}${line.slice(parsed.end)}`
 }
 
-function isPathConfigKey(tablePath: string, key: string): boolean {
-  const normalizedKey = normalizeTomlPathExpression(key)
-  const fullPath = tablePath
-    ? `${normalizeTomlPathExpression(tablePath)}.${normalizedKey}`
-    : normalizedKey
+function isPathConfigKey(fullPath: string): boolean {
   if (EXACT_PATH_CONFIG_KEYS.has(fullPath)) {
     return true
   }
diff --git a/src/main/codex/codex-home-paths.ts b/src/main/codex/codex-home-paths.ts
index d7e8ddecb96..8cf433c6689 100644
--- a/src/main/codex/codex-home-paths.ts
+++ b/src/main/codex/codex-home-paths.ts
@@ -11,7 +11,7 @@ import {
   unlinkSync
 } from 'node:fs'
 import { homedir } from 'node:os'
-import { join } from 'node:path'
+import { dirname, join } from 'node:path'
 import {
   clearCopiedResourceMarker,
   markCopiedResource,
@@ -22,6 +22,10 @@ import { observe, observeResolvedPathEntry } from './codex-path-observation'
 
 const CODEX_GLOBAL_INSTRUCTIONS_ENTRY = 'AGENTS.md'
 
+// The Codex app installs these under ~/.codex; Codex rejects them from any other home.
+export const CODEX_BUNDLED_MARKETPLACES_ENTRY = join('.tmp', 'bundled-marketplaces')
+export const CODEX_BUNDLED_MARKETPLACE_NAMES = ['openai-bundled', 'openai-bundled-alpha'] as const
+
 const CODEX_SYSTEM_RESOURCE_ENTRIES = [
   'skills',
   'hooks',
@@ -30,6 +34,7 @@ const CODEX_SYSTEM_RESOURCE_ENTRIES = [
   'profile-v2',
   'themes',
   'prompts',
+  CODEX_BUNDLED_MARKETPLACES_ENTRY,
   CODEX_GLOBAL_INSTRUCTIONS_ENTRY
 ] as const
 
@@ -155,6 +160,7 @@ function linkSystemCodexResource(
     rmSync(targetPath, { recursive: true, force: true })
   }
 
+  mkdirSync(dirname(targetPath), { recursive: true })
   if (preferCopy) {
     copySystemCodexResourceAsOwnedFallback(sourcePath, targetPath, managedHomePath, entryName)
     return