diff --git a/.beans/nuzlocke-tracker-f4d0--add-require-admin-dependency-and-protect-admin-end.md b/.beans/nuzlocke-tracker-f4d0--add-require-admin-dependency-and-protect-admin-end.md
index 56a0e8c..e4b0b43 100644
--- a/.beans/nuzlocke-tracker-f4d0--add-require-admin-dependency-and-protect-admin-end.md
+++ b/.beans/nuzlocke-tracker-f4d0--add-require-admin-dependency-and-protect-admin-end.md
@@ -1,11 +1,11 @@
 ---
 # nuzlocke-tracker-f4d0
 title: Add require_admin dependency and protect admin endpoints
-status: todo
+status: in-progress
 type: task
 priority: normal
 created_at: 2026-03-21T10:06:19Z
-updated_at: 2026-03-21T10:06:24Z
+updated_at: 2026-03-21T10:14:36Z
 parent: nuzlocke-tracker-ce4o
 blocked_by:
     - nuzlocke-tracker-dwah
@@ -15,13 +15,13 @@ Add a `require_admin` FastAPI dependency that checks the `is_admin` column on th
 
 ## Checklist
 
-- [ ] Add `require_admin` dependency in `backend/src/app/core/auth.py` that:
+- [x] Add `require_admin` dependency in `backend/src/app/core/auth.py` that:
   - Requires authentication (reuses `require_auth`)
   - Looks up the user in the `users` table by `AuthUser.id`
   - Returns 403 if `is_admin` is not `True`
-- [ ] Apply `require_admin` to write endpoints in: `games.py`, `pokemon.py`, `evolutions.py`, `bosses.py` (all POST/PUT/PATCH/DELETE)
-- [ ] Keep read endpoints (GET) accessible to all authenticated users
-- [ ] Add tests for 403 response when non-admin user hits admin endpoints
+- [x] Apply `require_admin` to write endpoints in: `games.py`, `pokemon.py`, `evolutions.py`, `bosses.py` (all POST/PUT/PATCH/DELETE)
+- [x] Keep read endpoints (GET) accessible to all authenticated users
+- [x] Add tests for 403 response when non-admin user hits admin endpoints
 
 ## Files to change
 
@@ -30,3 +30,20 @@ Add a `require_admin` FastAPI dependency that checks the `is_admin` column on th
 - `backend/src/app/api/pokemon.py` — same
 - `backend/src/app/api/evolutions.py` — same  
 - `backend/src/app/api/bosses.py` — same
+
+## Summary of Changes
+
+Added `require_admin` FastAPI dependency to `backend/src/app/core/auth.py`:
+- Depends on `require_auth` (returns 401 if not authenticated)
+- Looks up user in `users` table by UUID
+- Returns 403 if user not found or `is_admin` is not True
+
+Applied `require_admin` to all admin-facing write endpoints:
+- `games.py`: POST/PUT/DELETE for games and routes
+- `pokemon.py`: POST/PUT/DELETE for pokemon and route encounters
+- `evolutions.py`: POST/PUT/DELETE for evolutions
+- `bosses.py`: POST/PUT/DELETE for game-scoped boss operations (run-scoped endpoints kept with `require_auth`)
+
+Added tests in `test_auth.py`:
+- Unit tests for `require_admin` (admin user, non-admin user, user not in DB)
+- Integration tests for admin endpoint access (403 for non-admin, 201 for admin)
diff --git a/backend/src/app/api/bosses.py b/backend/src/app/api/bosses.py
index 807038b..b03fa6f 100644
--- a/backend/src/app/api/bosses.py
+++ b/backend/src/app/api/bosses.py
@@ -5,7 +5,7 @@ from sqlalchemy import or_, select
 from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy.orm import selectinload
 
-from app.core.auth import AuthUser, require_auth
+from app.core.auth import AuthUser, require_admin, require_auth
 from app.core.database import get_session
 from app.models.boss_battle import BossBattle
 from app.models.boss_pokemon import BossPokemon
@@ -86,7 +86,7 @@ async def reorder_bosses(
     game_id: int,
     data: BossReorderRequest,
     session: AsyncSession = Depends(get_session),
-    _user: AuthUser = Depends(require_auth),
+    _user: AuthUser = Depends(require_admin),
 ):
     vg_id = await _get_version_group_id(session, game_id)
 
@@ -130,7 +130,7 @@ async def create_boss(
     game_id: int,
     data: BossBattleCreate,
     session: AsyncSession = Depends(get_session),
-    _user: AuthUser = Depends(require_auth),
+    _user: AuthUser = Depends(require_admin),
 ):
     vg_id = await _get_version_group_id(session, game_id)
 
@@ -161,7 +161,7 @@ async def update_boss(
     boss_id: int,
     data: BossBattleUpdate,
     session: AsyncSession = Depends(get_session),
-    _user: AuthUser = Depends(require_auth),
+    _user: AuthUser = Depends(require_admin),
 ):
     vg_id = await _get_version_group_id(session, game_id)
 
@@ -202,7 +202,7 @@ async def delete_boss(
     game_id: int,
     boss_id: int,
     session: AsyncSession = Depends(get_session),
-    _user: AuthUser = Depends(require_auth),
+    _user: AuthUser = Depends(require_admin),
 ):
     vg_id = await _get_version_group_id(session, game_id)
 
@@ -225,7 +225,7 @@ async def bulk_import_bosses(
     game_id: int,
     items: list[BulkBossItem],
     session: AsyncSession = Depends(get_session),
-    _user: AuthUser = Depends(require_auth),
+    _user: AuthUser = Depends(require_admin),
 ):
     vg_id = await _get_version_group_id(session, game_id)
 
@@ -268,7 +268,7 @@ async def set_boss_team(
     boss_id: int,
     team: list[BossPokemonInput],
     session: AsyncSession = Depends(get_session),
-    _user: AuthUser = Depends(require_auth),
+    _user: AuthUser = Depends(require_admin),
 ):
     vg_id = await _get_version_group_id(session, game_id)
 
diff --git a/backend/src/app/api/evolutions.py b/backend/src/app/api/evolutions.py
index b261140..1d959f1 100644
--- a/backend/src/app/api/evolutions.py
+++ b/backend/src/app/api/evolutions.py
@@ -3,6 +3,7 @@ from sqlalchemy import func, or_, select
 from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy.orm import joinedload
 
+from app.core.auth import AuthUser, require_admin
 from app.core.database import get_session
 from app.models.evolution import Evolution
 from app.models.pokemon import Pokemon
@@ -89,7 +90,9 @@ async def list_evolutions(
 
 @router.post("/evolutions", response_model=EvolutionAdminResponse, status_code=201)
 async def create_evolution(
-    data: EvolutionCreate, session: AsyncSession = Depends(get_session)
+    data: EvolutionCreate,
+    session: AsyncSession = Depends(get_session),
+    _user: AuthUser = Depends(require_admin),
 ):
     from_pokemon = await session.get(Pokemon, data.from_pokemon_id)
     if from_pokemon is None:
@@ -117,6 +120,7 @@ async def update_evolution(
     evolution_id: int,
     data: EvolutionUpdate,
     session: AsyncSession = Depends(get_session),
+    _user: AuthUser = Depends(require_admin),
 ):
     evolution = await session.get(Evolution, evolution_id)
     if evolution is None:
@@ -150,7 +154,9 @@ async def update_evolution(
 
 @router.delete("/evolutions/{evolution_id}", status_code=204)
 async def delete_evolution(
-    evolution_id: int, session: AsyncSession = Depends(get_session)
+    evolution_id: int,
+    session: AsyncSession = Depends(get_session),
+    _user: AuthUser = Depends(require_admin),
 ):
     evolution = await session.get(Evolution, evolution_id)
     if evolution is None:
@@ -164,6 +170,7 @@ async def delete_evolution(
 async def bulk_import_evolutions(
     items: list[BulkEvolutionItem],
     session: AsyncSession = Depends(get_session),
+    _user: AuthUser = Depends(require_admin),
 ):
     # Build pokeapi_id -> id mapping
     result = await session.execute(select(Pokemon.pokeapi_id, Pokemon.id))
diff --git a/backend/src/app/api/games.py b/backend/src/app/api/games.py
index 6dc8dde..c8754d0 100644
--- a/backend/src/app/api/games.py
+++ b/backend/src/app/api/games.py
@@ -6,7 +6,7 @@ from sqlalchemy import delete, select, update
 from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy.orm import selectinload
 
-from app.core.auth import AuthUser, require_auth
+from app.core.auth import AuthUser, require_admin
 from app.core.database import get_session
 from app.models.boss_battle import BossBattle
 from app.models.game import Game
@@ -232,7 +232,7 @@ async def list_game_routes(
 async def create_game(
     data: GameCreate,
     session: AsyncSession = Depends(get_session),
-    _user: AuthUser = Depends(require_auth),
+    _user: AuthUser = Depends(require_admin),
 ):
     existing = await session.execute(select(Game).where(Game.slug == data.slug))
     if existing.scalar_one_or_none() is not None:
@@ -252,7 +252,7 @@ async def update_game(
     game_id: int,
     data: GameUpdate,
     session: AsyncSession = Depends(get_session),
-    _user: AuthUser = Depends(require_auth),
+    _user: AuthUser = Depends(require_admin),
 ):
     game = await session.get(Game, game_id)
     if game is None:
@@ -280,7 +280,7 @@ async def update_game(
 async def delete_game(
     game_id: int,
     session: AsyncSession = Depends(get_session),
-    _user: AuthUser = Depends(require_auth),
+    _user: AuthUser = Depends(require_admin),
 ):
     result = await session.execute(
         select(Game).where(Game.id == game_id).options(selectinload(Game.runs))
@@ -338,7 +338,7 @@ async def create_route(
     game_id: int,
     data: RouteCreate,
     session: AsyncSession = Depends(get_session),
-    _user: AuthUser = Depends(require_auth),
+    _user: AuthUser = Depends(require_admin),
 ):
     vg_id = await _get_version_group_id(session, game_id)
 
@@ -354,7 +354,7 @@ async def reorder_routes(
     game_id: int,
     data: RouteReorderRequest,
     session: AsyncSession = Depends(get_session),
-    _user: AuthUser = Depends(require_auth),
+    _user: AuthUser = Depends(require_admin),
 ):
     vg_id = await _get_version_group_id(session, game_id)
 
@@ -381,7 +381,7 @@ async def update_route(
     route_id: int,
     data: RouteUpdate,
     session: AsyncSession = Depends(get_session),
-    _user: AuthUser = Depends(require_auth),
+    _user: AuthUser = Depends(require_admin),
 ):
     vg_id = await _get_version_group_id(session, game_id)
 
@@ -402,7 +402,7 @@ async def delete_route(
     game_id: int,
     route_id: int,
     session: AsyncSession = Depends(get_session),
-    _user: AuthUser = Depends(require_auth),
+    _user: AuthUser = Depends(require_admin),
 ):
     vg_id = await _get_version_group_id(session, game_id)
 
@@ -437,7 +437,7 @@ async def bulk_import_routes(
     game_id: int,
     items: list[BulkRouteItem],
     session: AsyncSession = Depends(get_session),
-    _user: AuthUser = Depends(require_auth),
+    _user: AuthUser = Depends(require_admin),
 ):
     vg_id = await _get_version_group_id(session, game_id)
 
diff --git a/backend/src/app/api/pokemon.py b/backend/src/app/api/pokemon.py
index 2eecf5f..4649961 100644
--- a/backend/src/app/api/pokemon.py
+++ b/backend/src/app/api/pokemon.py
@@ -3,6 +3,7 @@ from sqlalchemy import func, or_, select
 from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy.orm import joinedload, selectinload
 
+from app.core.auth import AuthUser, require_admin
 from app.core.database import get_session
 from app.models.evolution import Evolution
 from app.models.pokemon import Pokemon
@@ -68,6 +69,7 @@ async def list_pokemon(
 async def bulk_import_pokemon(
     items: list[BulkImportItem],
     session: AsyncSession = Depends(get_session),
+    _user: AuthUser = Depends(require_admin),
 ):
     created = 0
     updated = 0
@@ -100,7 +102,9 @@ async def bulk_import_pokemon(
 
 @router.post("/pokemon", response_model=PokemonResponse, status_code=201)
 async def create_pokemon(
-    data: PokemonCreate, session: AsyncSession = Depends(get_session)
+    data: PokemonCreate,
+    session: AsyncSession = Depends(get_session),
+    _user: AuthUser = Depends(require_admin),
 ):
     existing = await session.execute(
         select(Pokemon).where(Pokemon.pokeapi_id == data.pokeapi_id)
@@ -321,6 +325,7 @@ async def update_pokemon(
     pokemon_id: int,
     data: PokemonUpdate,
     session: AsyncSession = Depends(get_session),
+    _user: AuthUser = Depends(require_admin),
 ):
     pokemon = await session.get(Pokemon, pokemon_id)
     if pokemon is None:
@@ -349,7 +354,11 @@ async def update_pokemon(
 
 
 @router.delete("/pokemon/{pokemon_id}", status_code=204)
-async def delete_pokemon(pokemon_id: int, session: AsyncSession = Depends(get_session)):
+async def delete_pokemon(
+    pokemon_id: int,
+    session: AsyncSession = Depends(get_session),
+    _user: AuthUser = Depends(require_admin),
+):
     result = await session.execute(
         select(Pokemon)
         .where(Pokemon.id == pokemon_id)
@@ -405,6 +414,7 @@ async def add_route_encounter(
     route_id: int,
     data: RouteEncounterCreate,
     session: AsyncSession = Depends(get_session),
+    _user: AuthUser = Depends(require_admin),
 ):
     route = await session.get(Route, route_id)
     if route is None:
@@ -436,6 +446,7 @@ async def update_route_encounter(
     encounter_id: int,
     data: RouteEncounterUpdate,
     session: AsyncSession = Depends(get_session),
+    _user: AuthUser = Depends(require_admin),
 ):
     result = await session.execute(
         select(RouteEncounter)
@@ -466,6 +477,7 @@ async def remove_route_encounter(
     route_id: int,
     encounter_id: int,
     session: AsyncSession = Depends(get_session),
+    _user: AuthUser = Depends(require_admin),
 ):
     encounter = await session.execute(
         select(RouteEncounter).where(
diff --git a/backend/src/app/core/auth.py b/backend/src/app/core/auth.py
index 7cfc7d2..6a5b392 100644
--- a/backend/src/app/core/auth.py
+++ b/backend/src/app/core/auth.py
@@ -1,9 +1,14 @@
 from dataclasses import dataclass
+from uuid import UUID
 
 import jwt
 from fastapi import Depends, HTTPException, Request, status
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
 
 from app.core.config import settings
+from app.core.database import get_session
+from app.models.user import User
 
 
 @dataclass
@@ -81,3 +86,22 @@ def require_auth(user: AuthUser | None = Depends(get_current_user)) -> AuthUser:
             headers={"WWW-Authenticate": "Bearer"},
         )
     return user
+
+
+async def require_admin(
+    user: AuthUser = Depends(require_auth),
+    session: AsyncSession = Depends(get_session),
+) -> AuthUser:
+    """
+    Dependency that requires admin privileges.
+    Raises 401 if not authenticated, 403 if not an admin.
+    """
+    result = await session.execute(select(User).where(User.id == UUID(user.id)))
+    db_user = result.scalar_one_or_none()
+
+    if db_user is None or not db_user.is_admin:
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="Admin access required",
+        )
+    return user
diff --git a/backend/tests/test_auth.py b/backend/tests/test_auth.py
index 9ea3817..13c9aea 100644
--- a/backend/tests/test_auth.py
+++ b/backend/tests/test_auth.py
@@ -1,12 +1,14 @@
 import time
+from uuid import UUID
 
 import jwt
 import pytest
 from httpx import ASGITransport, AsyncClient
 
-from app.core.auth import AuthUser, get_current_user, require_auth
+from app.core.auth import AuthUser, get_current_user, require_admin, require_auth
 from app.core.config import settings
 from app.main import app
+from app.models.user import User
 
 
 @pytest.fixture
@@ -177,3 +179,140 @@ async def test_read_endpoint_without_token(db_session):
     ) as ac:
         response = await ac.get("/runs")
     assert response.status_code == 200
+
+
+async def test_require_admin_valid_admin_user(db_session):
+    """Test require_admin passes through for admin user."""
+    user_id = "11111111-1111-1111-1111-111111111111"
+    admin_user = User(
+        id=UUID(user_id),
+        email="admin@example.com",
+        is_admin=True,
+    )
+    db_session.add(admin_user)
+    await db_session.commit()
+
+    auth_user = AuthUser(id=user_id, email="admin@example.com")
+    result = await require_admin(user=auth_user, session=db_session)
+    assert result is auth_user
+
+
+async def test_require_admin_non_admin_user(db_session):
+    """Test require_admin raises 403 for non-admin user."""
+    from fastapi import HTTPException
+
+    user_id = "22222222-2222-2222-2222-222222222222"
+    regular_user = User(
+        id=UUID(user_id),
+        email="user@example.com",
+        is_admin=False,
+    )
+    db_session.add(regular_user)
+    await db_session.commit()
+
+    auth_user = AuthUser(id=user_id, email="user@example.com")
+    with pytest.raises(HTTPException) as exc_info:
+        await require_admin(user=auth_user, session=db_session)
+    assert exc_info.value.status_code == 403
+    assert exc_info.value.detail == "Admin access required"
+
+
+async def test_require_admin_user_not_in_db(db_session):
+    """Test require_admin raises 403 for user not in database."""
+    from fastapi import HTTPException
+
+    auth_user = AuthUser(
+        id="33333333-3333-3333-3333-333333333333", email="ghost@example.com"
+    )
+    with pytest.raises(HTTPException) as exc_info:
+        await require_admin(user=auth_user, session=db_session)
+    assert exc_info.value.status_code == 403
+    assert exc_info.value.detail == "Admin access required"
+
+
+async def test_admin_endpoint_returns_403_for_non_admin(
+    db_session, jwt_secret, monkeypatch
+):
+    """Test that admin endpoint returns 403 for authenticated non-admin user."""
+    user_id = "44444444-4444-4444-4444-444444444444"
+    regular_user = User(
+        id=UUID(user_id),
+        email="nonadmin@example.com",
+        is_admin=False,
+    )
+    db_session.add(regular_user)
+    await db_session.commit()
+
+    monkeypatch.setattr(settings, "supabase_jwt_secret", jwt_secret)
+    token = jwt.encode(
+        {
+            "sub": user_id,
+            "email": "nonadmin@example.com",
+            "role": "authenticated",
+            "aud": "authenticated",
+            "exp": int(time.time()) + 3600,
+        },
+        jwt_secret,
+        algorithm="HS256",
+    )
+
+    async with AsyncClient(
+        transport=ASGITransport(app=app),
+        base_url="http://test",
+        headers={"Authorization": f"Bearer {token}"},
+    ) as ac:
+        response = await ac.post(
+            "/games",
+            json={
+                "name": "Test Game",
+                "slug": "test-game",
+                "generation": 1,
+                "region": "Kanto",
+                "category": "core",
+            },
+        )
+    assert response.status_code == 403
+    assert response.json()["detail"] == "Admin access required"
+
+
+async def test_admin_endpoint_succeeds_for_admin(db_session, jwt_secret, monkeypatch):
+    """Test that admin endpoint succeeds for authenticated admin user."""
+    user_id = "55555555-5555-5555-5555-555555555555"
+    admin_user = User(
+        id=UUID(user_id),
+        email="admin@example.com",
+        is_admin=True,
+    )
+    db_session.add(admin_user)
+    await db_session.commit()
+
+    monkeypatch.setattr(settings, "supabase_jwt_secret", jwt_secret)
+    token = jwt.encode(
+        {
+            "sub": user_id,
+            "email": "admin@example.com",
+            "role": "authenticated",
+            "aud": "authenticated",
+            "exp": int(time.time()) + 3600,
+        },
+        jwt_secret,
+        algorithm="HS256",
+    )
+
+    async with AsyncClient(
+        transport=ASGITransport(app=app),
+        base_url="http://test",
+        headers={"Authorization": f"Bearer {token}"},
+    ) as ac:
+        response = await ac.post(
+            "/games",
+            json={
+                "name": "Test Game",
+                "slug": "test-game",
+                "generation": 1,
+                "region": "Kanto",
+                "category": "core",
+            },
+        )
+    assert response.status_code == 201
+    assert response.json()["name"] == "Test Game"