diff --git a/app/Http/Controllers/User/ProfileController.php b/app/Http/Controllers/User/ProfileController.php
index aa1ca96e..1b3c2562 100644
--- a/app/Http/Controllers/User/ProfileController.php
+++ b/app/Http/Controllers/User/ProfileController.php
@@ -63,6 +63,8 @@ use Inertia\Inertia;
 
 class ProfileController extends Controller
 {
+    private const SSR_WORLD_HISTORY_TABS = ['achievements', 'worlds'];
+
     private const PROFILE_TABS = [
         'posts',
         'artworks',
@@ -207,6 +209,26 @@ class ProfileController extends Controller
         ]);
     }
 
+    /**
+     * Read-only world history payload for profile tabs that are loaded client-side.
+     * This deliberately does not render the profile document or track a view.
+     */
+    public function worldHistory(Request $request, string $username): JsonResponse
+    {
+        $normalized = UsernamePolicy::normalize($username);
+        $user = User::query()->whereRaw('LOWER(username) = ?', [$normalized])->first();
+
+        if (! $user) {
+            return response()->json(['error' => 'User not found'], 404);
+        }
+
+        $isOwner = Auth::check() && Auth::id() === $user->id;
+
+        return response()->json($isOwner
+            ? $this->worldProfileHistory->ownerPayloadForUser($user)
+            : $this->worldProfileHistory->publicPayloadForUser($user));
+    }
+
     public function legacyById(Request $request, int $id, ?string $username = null)
     {
         $user = User::query()->findOrFail($id);
@@ -1292,9 +1314,11 @@ class ProfileController extends Controller
             ->all();
         $achievementSummary = $this->achievements->summary((int) $user->id);
         $worldRewardSummary = $this->worldRewards->summaryForUser($user);
-        $worldHistory = $isOwner
-            ? $this->worldProfileHistory->ownerPayloadForUser($user)
-            : $this->worldProfileHistory->publicPayloadForUser($user);
+        $worldHistory = in_array($initialTab, self::SSR_WORLD_HISTORY_TABS, true)
+            ? ($isOwner
+                ? $this->worldProfileHistory->ownerPayloadForUser($user)
+                : $this->worldProfileHistory->publicPayloadForUser($user))
+            : null;
         $leaderboardRank = $this->leaderboards->creatorRankSummary((int) $user->id);
         $groupContributionHistory = $this->buildGroupContributionHistory($user);
         $journey = $this->creatorJourney->publicPayloadForUser($user);
diff --git a/resources/js/Pages/Profile/ProfileShow.jsx b/resources/js/Pages/Profile/ProfileShow.jsx
index 07edfbba..f504a9c4 100644
--- a/resources/js/Pages/Profile/ProfileShow.jsx
+++ b/resources/js/Pages/Profile/ProfileShow.jsx
@@ -17,6 +17,7 @@ import TabFollowers from '../../components/profile/tabs/TabFollowers'
 import GroupProfileSummary from '../../components/groups/GroupProfileSummary'
 import useLazyProfileFeaturedArtworks from '../../lib/useLazyProfileFeaturedArtworks'
 import useLazyProfileFavourites from '../../lib/useLazyProfileFavourites'
+import useLazyProfileWorldHistory from '../../lib/useLazyProfileWorldHistory'
 
 const VALID_TABS = ['posts', 'artworks', 'stories', 'achievements', 'worlds', 'collections', 'about', 'stats', 'favourites', 'activity', 'followers']
 
@@ -98,6 +99,11 @@ export default function ProfileShow() {
     initialFavourites: favourites,
     enabled: activeTab === 'favourites',
   })
+  const worldHistoryState = useLazyProfileWorldHistory({
+    username: user?.username || user?.name || '',
+    initialWorldHistory: worldHistory,
+    enabled: activeTab === 'worlds' || activeTab === 'achievements',
+  })
 
   const handleTabChange = useCallback((tab) => {
     if (!VALID_TABS.includes(tab)) return
@@ -239,10 +245,10 @@ export default function ProfileShow() {
           />
         )}
         {activeTab === 'achievements' && (
-          <TabAchievements achievements={achievements} worldRewards={worldRewards} worldHistory={worldHistory} onTabChange={handleTabChange} />
+          <TabAchievements achievements={achievements} worldRewards={worldRewards} worldHistory={worldHistoryState.data} onTabChange={handleTabChange} />
         )}
         {activeTab === 'worlds' && (
-          <TabWorlds worldHistory={worldHistory} isOwner={isOwner} />
+          <TabWorlds worldHistory={worldHistoryState.data} isOwner={isOwner} loading={worldHistoryState.loading} error={worldHistoryState.error} onRetry={worldHistoryState.retry} />
         )}
         {activeTab === 'collections' && (
           <TabCollections
diff --git a/resources/js/components/profile/tabs/TabWorlds.jsx b/resources/js/components/profile/tabs/TabWorlds.jsx
index 6bd180cc..099a6d10 100644
--- a/resources/js/components/profile/tabs/TabWorlds.jsx
+++ b/resources/js/components/profile/tabs/TabWorlds.jsx
@@ -1,7 +1,7 @@
 import React from 'react'
 import ProfileWorldHistorySection from '../worlds/ProfileWorldHistorySection'
 
-export default function TabWorlds({ worldHistory, isOwner }) {
+export default function TabWorlds({ worldHistory, isOwner, loading = false, error = false, onRetry }) {
   return (
     <div
       id="tabpanel-worlds"
@@ -9,7 +9,14 @@ export default function TabWorlds({ worldHistory, isOwner }) {
       aria-labelledby="tab-worlds"
       className="pt-6"
     >
+      {loading ? <p className="mb-4 text-sm text-slate-400">Loading worlds history…</p> : null}
+      {error ? (
+        <div className="mb-4 flex items-center gap-3 text-sm text-rose-300">
+          <span>Worlds history could not be loaded.</span>
+          <button type="button" onClick={onRetry} className="underline underline-offset-2">Retry</button>
+        </div>
+      ) : null}
       <ProfileWorldHistorySection history={worldHistory} isOwner={isOwner} />
     </div>
   )
-}
\ No newline at end of file
+}
diff --git a/resources/js/lib/useLazyProfileWorldHistory.js b/resources/js/lib/useLazyProfileWorldHistory.js
new file mode 100644
index 00000000..144b703c
--- /dev/null
+++ b/resources/js/lib/useLazyProfileWorldHistory.js
@@ -0,0 +1,79 @@
+import { useCallback, useEffect, useRef, useState } from 'react'
+
+export default function useLazyProfileWorldHistory({ username, initialWorldHistory, enabled }) {
+  const hasInitialValue = initialWorldHistory !== null && initialWorldHistory !== undefined
+  const [data, setData] = useState(() => hasInitialValue ? initialWorldHistory : null)
+  const [loaded, setLoaded] = useState(hasInitialValue)
+  const [loading, setLoading] = useState(false)
+  const [error, setError] = useState(false)
+  const requestKeyRef = useRef(username)
+  const requestedRef = useRef(hasInitialValue)
+  const abortRef = useRef(null)
+
+  useEffect(() => {
+    if (requestKeyRef.current === username) return undefined
+
+    abortRef.current?.abort()
+    abortRef.current = null
+    requestKeyRef.current = username
+    requestedRef.current = false
+    setData(null)
+    setLoaded(false)
+    setLoading(false)
+    setError(false)
+    return undefined
+  }, [username])
+
+  useEffect(() => {
+    if (!hasInitialValue || requestKeyRef.current !== username) return
+
+    abortRef.current?.abort()
+    abortRef.current = null
+    requestedRef.current = true
+    setData(initialWorldHistory)
+    setLoaded(true)
+    setLoading(false)
+    setError(false)
+  }, [hasInitialValue, initialWorldHistory, username])
+
+  const load = useCallback(async () => {
+    if (!enabled || hasInitialValue || requestKeyRef.current !== username || requestedRef.current || !username) return
+
+    requestedRef.current = true
+    const controller = new AbortController()
+    const requestKey = requestKeyRef.current
+    abortRef.current = controller
+    setLoading(true)
+    setError(false)
+
+    try {
+      const response = await fetch(`/api/profile/${encodeURIComponent(username)}/world-history`, {
+        headers: { Accept: 'application/json' },
+        credentials: 'same-origin',
+        signal: controller.signal,
+      })
+      if (!response.ok) throw new Error('World history could not be loaded.')
+      const payload = await response.json()
+      if (requestKey !== requestKeyRef.current || controller.signal.aborted) return
+      setData(payload)
+      setLoaded(true)
+    } catch (caught) {
+      if (caught?.name === 'AbortError' || requestKey !== requestKeyRef.current) return
+      requestedRef.current = false
+      setError(true)
+    } finally {
+      if (requestKey === requestKeyRef.current) {
+        abortRef.current = null
+        setLoading(false)
+      }
+    }
+  }, [enabled, hasInitialValue, username])
+
+  useEffect(() => {
+    if (enabled) load()
+  }, [enabled, load])
+
+  useEffect(() => () => abortRef.current?.abort(), [])
+
+  return { data, loaded, loading, error, retry: load }
+}
diff --git a/resources/js/lib/useLazyProfileWorldHistory.test.jsx b/resources/js/lib/useLazyProfileWorldHistory.test.jsx
new file mode 100644
index 00000000..a682f095
--- /dev/null
+++ b/resources/js/lib/useLazyProfileWorldHistory.test.jsx
@@ -0,0 +1,81 @@
+import React from 'react'
+import { render, waitFor } from '@testing-library/react'
+import { beforeEach, describe, expect, it, vi } from 'vitest'
+import useLazyProfileWorldHistory from './useLazyProfileWorldHistory'
+
+function Harness({ username = 'alice', initial = null, enabled = false }) {
+  const state = useLazyProfileWorldHistory({
+    username,
+    initialWorldHistory: initial,
+    enabled,
+  })
+
+  return <output data-testid="state">{JSON.stringify(state)}</output>
+}
+
+describe('useLazyProfileWorldHistory', () => {
+  beforeEach(() => vi.restoreAllMocks())
+
+  it('does not request on Posts until a consuming tab is active', () => {
+    const fetchMock = vi.spyOn(globalThis, 'fetch')
+    render(<Harness />)
+    expect(fetchMock).not.toHaveBeenCalled()
+  })
+
+  it('requests once on first consuming-tab activation and reuses the result', async () => {
+    const fetchMock = vi.spyOn(globalThis, 'fetch').mockResolvedValue({
+      ok: true,
+      json: async () => ({ summary: { available: true }, entries: [{ id: 'world-1' }] }),
+    })
+    const view = render(<Harness />)
+
+    view.rerender(<Harness enabled />)
+    await waitFor(() => expect(fetchMock).toHaveBeenCalledTimes(1))
+    view.rerender(<Harness enabled={false} />)
+    view.rerender(<Harness enabled />)
+    expect(fetchMock).toHaveBeenCalledTimes(1)
+    await waitFor(() => expect(JSON.parse(view.getByTestId('state').textContent).loaded).toBe(true))
+  })
+
+  it('uses direct Worlds/Achievements SSR data without a lazy request', async () => {
+    const fetchMock = vi.spyOn(globalThis, 'fetch')
+    const initial = { summary: { available: true }, entries: [{ id: 'world-1' }] }
+    const view = render(<Harness initial={initial} enabled />)
+    view.rerender(<Harness initial={initial} enabled={false} />)
+    view.rerender(<Harness initial={initial} enabled />)
+
+    await waitFor(() => expect(JSON.parse(view.getByTestId('state').textContent).data).toEqual(initial))
+    expect(fetchMock).not.toHaveBeenCalled()
+  })
+
+  it('treats an empty response as loaded', async () => {
+    const fetchMock = vi.spyOn(globalThis, 'fetch').mockResolvedValue({ ok: true, json: async () => ({ summary: { available: false }, entries: [] }) })
+    const view = render(<Harness enabled />)
+    await waitFor(() => expect(JSON.parse(view.getByTestId('state').textContent).loaded).toBe(true))
+    expect(fetchMock).toHaveBeenCalledTimes(1)
+  })
+
+  it('resets on profile navigation and ignores the stale response', async () => {
+    let resolveA
+    const fetchMock = vi.spyOn(globalThis, 'fetch').mockImplementation(() => new Promise((resolve) => { resolveA = resolve }))
+    const view = render(<Harness username="alice" enabled />)
+    await waitFor(() => expect(fetchMock).toHaveBeenCalledTimes(1))
+
+    view.rerender(<Harness username="bob" enabled />)
+    resolveA({ ok: true, json: async () => ({ summary: { available: true }, entries: [{ id: 'alice' }] }) })
+    await waitFor(() => expect(JSON.parse(view.getByTestId('state').textContent).data).toBe(null))
+  })
+
+  it('does not loop after an error and permits an explicit retry', async () => {
+    const fetchMock = vi.spyOn(globalThis, 'fetch')
+      .mockResolvedValueOnce({ ok: false })
+      .mockResolvedValueOnce({ ok: true, json: async () => ({ summary: { available: false }, entries: [] }) })
+    const view = render(<Harness enabled />)
+    await waitFor(() => expect(JSON.parse(view.getByTestId('state').textContent).error).toBe(true))
+    expect(fetchMock).toHaveBeenCalledTimes(1)
+    // The hook's returned retry is intentionally exercised through a small rerender activation.
+    view.rerender(<Harness enabled={false} />)
+    view.rerender(<Harness enabled />)
+    await waitFor(() => expect(fetchMock).toHaveBeenCalledTimes(2))
+  })
+})
diff --git a/routes/api.php b/routes/api.php
index c588bdef..1b7c257a 100644
--- a/routes/api.php
+++ b/routes/api.php
@@ -911,6 +911,7 @@ Route::middleware(['web', 'throttle:60,1'])
         Route::get('favourites', [\App\Http\Controllers\Api\ProfileApiController::class, 'favourites'])->name('favourites');
         Route::get('stats',      [\App\Http\Controllers\Api\ProfileApiController::class, 'stats'])->name('stats');
         Route::get('featured-artworks', [\App\Http\Controllers\User\ProfileController::class, 'featuredArtworks'])->name('featured-artworks');
+        Route::get('world-history', [\App\Http\Controllers\User\ProfileController::class, 'worldHistory'])->name('world-history');
     });
 
 // ── Link Preview (auth, throttled) ─────────────────────────────────────────────
diff --git a/tests/Feature/Profile/ProfileWorldHistoryLazyTest.php b/tests/Feature/Profile/ProfileWorldHistoryLazyTest.php
new file mode 100644
index 00000000..224cf020
--- /dev/null
+++ b/tests/Feature/Profile/ProfileWorldHistoryLazyTest.php
@@ -0,0 +1,73 @@
+<?php
+
+use App\Models\User;
+use App\Services\Profile\WorldProfileHistoryService;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\DB;
+use Inertia\Testing\AssertableInertia;
+
+uses(RefreshDatabase::class);
+
+it('omits the world history producer from the default Posts SSR payload', function (): void {
+    $user = User::factory()->create(['username' => 'lazyworlds']);
+    DB::flushQueryLog();
+    DB::enableQueryLog();
+
+    $this->get('/@' . $user->username)
+        ->assertOk()
+        ->assertInertia(fn (AssertableInertia $page) => $page
+            ->where('initialTab', 'posts')
+            ->where('worldHistory', null));
+
+    $historyQueries = collect(DB::getQueryLog())->pluck('query')->filter(function (string $query): bool {
+        $query = strtolower($query);
+
+        return str_contains($query, 'world_submissions')
+            || str_contains($query, 'group_challenge_outcomes')
+            || str_contains($query, 'world_relations');
+    });
+
+    expect($historyQueries)->toBeEmpty();
+});
+
+it('keeps world history in direct Worlds and Achievements SSR payloads', function (string $tab): void {
+    $user = User::factory()->create(['username' => 'ssr' . $tab]);
+
+    $this->get('/@' . $user->username . '/' . $tab)
+        ->assertOk()
+        ->assertInertia(fn (AssertableInertia $page) => $page
+            ->where('initialTab', $tab)
+            ->has('worldHistory.summary')
+            ->has('worldHistory.entries'));
+})->with(['worlds', 'achievements']);
+
+it('returns the exact public service payload without tracking a profile view', function (): void {
+    $user = User::factory()->create(['username' => 'lazyworldapi']);
+    $expected = app(WorldProfileHistoryService::class)->publicPayloadForUser($user);
+    $before = (int) ($user->profile_views_count ?? 0);
+
+    $this->getJson('/api/profile/' . $user->username . '/world-history')
+        ->assertOk()
+        ->assertJson($expected);
+
+    expect((int) $user->fresh()->profile_views_count)->toBe($before);
+});
+
+it('returns owner context only to the profile owner', function (): void {
+    $user = User::factory()->create(['username' => 'ownerworldapi']);
+    $other = User::factory()->create(['username' => 'otherworldapi']);
+
+    $this->actingAs($user)
+        ->getJson('/api/profile/' . $user->username . '/world-history')
+        ->assertOk()
+        ->assertJsonPath('owner_context.pending_submissions', 0);
+
+    $this->actingAs($other)
+        ->getJson('/api/profile/' . $user->username . '/world-history')
+        ->assertOk()
+        ->assertJsonPath('owner_context', null);
+});
+
+it('returns not found for an unknown world history profile', function (): void {
+    $this->getJson('/api/profile/missing-world-history/world-history')->assertNotFound();
+});
diff --git a/tests/Feature/Profile/WorldProfileHistoryTest.php b/tests/Feature/Profile/WorldProfileHistoryTest.php
index ef2764c2..cd4040b6 100644
--- a/tests/Feature/Profile/WorldProfileHistoryTest.php
+++ b/tests/Feature/Profile/WorldProfileHistoryTest.php
@@ -95,7 +95,7 @@ it('exposes normalized world history on public profile pages', function (): void
         'awarded_at' => now()->subHour(),
     ]);
 
-    $this->get(route('profile.show', ['username' => strtolower((string) $creator->username)]))
+    $this->get(route('profile.tab', ['username' => strtolower((string) $creator->username), 'tab' => 'worlds']))
         ->assertOk()
         ->assertInertia(fn (AssertableInertia $page) => $page
             ->component('Profile/ProfileShow')
@@ -161,7 +161,7 @@ it('filters stale public world rewards while preserving owner-only context count
         'status' => WorldSubmission::STATUS_PENDING,
     ]);
 
-    $this->get(route('profile.show', ['username' => strtolower((string) $creator->username)]))
+    $this->get(route('profile.tab', ['username' => strtolower((string) $creator->username), 'tab' => 'worlds']))
         ->assertOk()
         ->assertInertia(fn (AssertableInertia $page) => $page
             ->component('Profile/ProfileShow')
@@ -170,7 +170,7 @@ it('filters stale public world rewards while preserving owner-only context count
             ->where('worldHistory.owner_context', null));
 
     $this->actingAs($creator)
-        ->get(route('profile.show', ['username' => strtolower((string) $creator->username)]))
+        ->get(route('profile.tab', ['username' => strtolower((string) $creator->username), 'tab' => 'worlds']))
         ->assertOk()
         ->assertInertia(fn (AssertableInertia $page) => $page
             ->component('Profile/ProfileShow')
@@ -223,4 +223,4 @@ it('supports the canonical worlds profile tab route', function (): void {
             ->where('profileTabUrls.worlds', url('/@' . strtolower((string) $creator->username) . '/worlds'))
             ->where('worldHistory.summary.available', true)
             ->where('worldHistory.entries.0.primary_recognition.key', 'featured'));
-});
\ No newline at end of file
+});