diff --git a/backend/alembic/versions/0006_group_invitations.py b/backend/alembic/versions/0006_group_invitations.py
new file mode 100644
index 0000000..eedd10c
--- /dev/null
+++ b/backend/alembic/versions/0006_group_invitations.py
@@ -0,0 +1,60 @@
+"""Приглашения в группу: таблица group_invitations.
+
+Идемпотентна (как 0005): на свежей БД таблицу создаёт 0001 (create_all из актуальных
+моделей); на существующей — create_table здесь.
+
+Revision ID: 0006_group_invitations
+Revises: 0005_achievements
+Create Date: 2026-06-17
+"""
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from sqlalchemy import inspect
+
+from alembic import op
+
+revision: str = "0006_group_invitations"
+down_revision: Union[str, None] = "0005_achievements"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    bind = op.get_bind()
+    insp = inspect(bind)
+    if "group_invitations" in insp.get_table_names():
+        return
+    op.create_table(
+        "group_invitations",
+        sa.Column("id", sa.Integer(), primary_key=True),
+        sa.Column(
+            "group_id",
+            sa.Integer(),
+            sa.ForeignKey("groups.id", ondelete="CASCADE"),
+            nullable=False,
+        ),
+        sa.Column(
+            "user_id",
+            sa.Integer(),
+            sa.ForeignKey("users.id", ondelete="CASCADE"),
+            nullable=False,
+        ),
+        sa.Column(
+            "invited_by_id",
+            sa.Integer(),
+            sa.ForeignKey("users.id", ondelete="SET NULL"),
+            nullable=True,
+        ),
+        sa.Column("created_at", sa.DateTime(), nullable=False),
+        sa.UniqueConstraint("group_id", "user_id", name="uq_group_invitation"),
+    )
+    op.create_index("ix_group_invitations_group_id", "group_invitations", ["group_id"])
+    op.create_index("ix_group_invitations_user_id", "group_invitations", ["user_id"])
+
+
+def downgrade() -> None:
+    bind = op.get_bind()
+    insp = inspect(bind)
+    if "group_invitations" in insp.get_table_names():
+        op.drop_table("group_invitations")
diff --git a/backend/app/main.py b/backend/app/main.py
index f250ed1..0f33473 100644
--- a/backend/app/main.py
+++ b/backend/app/main.py
@@ -15,7 +15,17 @@ from starlette.middleware.base import BaseHTTPMiddleware
 from app.core import security
 from app.core.config import settings
 from app.core.errors import AppError, app_error_handler
-from app.routers import achievements, admin, auth, groups, matches, reference, stats, users
+from app.routers import (
+    achievements,
+    admin,
+    auth,
+    groups,
+    invitations,
+    matches,
+    reference,
+    stats,
+    users,
+)
 
 # Каталог со сборкой фронта (в Docker — backend/static; локально может отсутствовать).
 _STATIC_DIR = Path(os.getenv("STATIC_DIR", str(Path(__file__).resolve().parent.parent / "static")))
@@ -106,8 +116,9 @@ def create_app() -> FastAPI:
         )
 
     # API-роутеры под /api.
-    api_routers = [auth.router, users.router, groups.router, matches.router,
-                   reference.router, stats.router, achievements.router, admin.router]
+    api_routers = [auth.router, users.router, groups.router, invitations.router,
+                   matches.router, reference.router, stats.router, achievements.router,
+                   admin.router]
     for r in api_routers:
         app.include_router(r, prefix="/api")
 
diff --git a/backend/app/models.py b/backend/app/models.py
index 2b635c3..d57166e 100644
--- a/backend/app/models.py
+++ b/backend/app/models.py
@@ -188,6 +188,34 @@ class GroupMember(SQLModel, table=True):
     joined_at: datetime = Field(default_factory=_utcnow, nullable=False)
 
 
+class GroupInvitation(SQLModel, table=True):
+    """Ожидающее приглашение в группу. Хранятся только pending: при ответе строка
+    удаляется (accept → создаётся GroupMember; decline → просто удаление)."""
+
+    __tablename__ = "group_invitations"
+    __table_args__ = (
+        UniqueConstraint("group_id", "user_id", name="uq_group_invitation"),
+    )
+
+    id: int | None = Field(default=None, primary_key=True)
+    group_id: int = Field(
+        sa_column=Column(
+            Integer, ForeignKey("groups.id", ondelete="CASCADE"), nullable=False, index=True
+        )
+    )
+    user_id: int = Field(
+        sa_column=Column(
+            Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False, index=True
+        )
+    )
+    invited_by_id: int | None = Field(
+        sa_column=Column(
+            Integer, ForeignKey("users.id", ondelete="SET NULL"), nullable=True
+        )
+    )
+    created_at: datetime = Field(default_factory=_utcnow, nullable=False)
+
+
 class GroupExpansion(SQLModel, table=True):
     __tablename__ = "group_expansions"
     __table_args__ = (
diff --git a/backend/app/routers/groups.py b/backend/app/routers/groups.py
index ba4693c..7813d16 100644
--- a/backend/app/routers/groups.py
+++ b/backend/app/routers/groups.py
@@ -5,12 +5,14 @@ from fastapi import APIRouter, Depends, Query, Request
 from sqlmodel import Session
 
 from app.auth.deps import get_current_user
+from app.core.timeutil import iso_utc
 from app.db.session import get_session
 from app.models import User
 from app.schemas import api as s
 from app.services import (
     audit_service,
     group_service,
+    invitation_service,
     membership_service,
     stats_service,
 )
@@ -128,29 +130,36 @@ def list_members(
     ]
 
 
-@router.post("/{group_id}/members", response_model=s.MemberRead)
-def add_member(
+@router.post("/{group_id}/invitations", response_model=s.InvitationRead)
+def invite_member(
     group_id: int,
     body: s.MemberAdd,
     request: Request,
     session: Session = Depends(get_session),
     user: User = Depends(get_current_user),
-) -> s.MemberRead:
+) -> s.InvitationRead:
+    # Приглашать вправе ЛЮБОЙ участник группы (не только владелец) — assert_member.
     group_service.assert_member(session, group_id, user.id)  # type: ignore[arg-type]
     group = group_service.get_group(session, group_id)
-    member, added = membership_service.add_member_by_nickname(session, group, body.nickname)
+    inv, invited = invitation_service.create_invitation(session, group, user, body.nickname)
     audit_service.record(
         session,
         actor_id=user.id,
         action="create",
-        entity_type="group_member",
+        entity_type="group_invitation",
         entity_id=group_id,
-        payload={"added_user_id": added.id, "nickname": added.nickname},
+        payload={"invited_user_id": invited.id, "nickname": invited.nickname},
         ip=request.client.host if request.client else None,
         user_agent=request.headers.get("user-agent"),
     )
     session.commit()
-    return s.MemberRead(user_id=added.id, nickname=added.nickname, role=member.role)
+    return s.InvitationRead(
+        id=inv.id,  # type: ignore[arg-type]
+        group_id=group_id,
+        group_name=group.name,
+        invited_by_nickname=user.nickname,
+        created_at=iso_utc(inv.created_at),
+    )
 
 
 @router.delete("/{group_id}/members/{user_id}", response_model=s.OkResponse)
diff --git a/backend/app/routers/invitations.py b/backend/app/routers/invitations.py
new file mode 100644
index 0000000..e388562
--- /dev/null
+++ b/backend/app/routers/invitations.py
@@ -0,0 +1,41 @@
+"""Входящие приглашения игрока: список, принятие, отклонение."""
+from __future__ import annotations
+
+from fastapi import APIRouter, Depends
+from sqlmodel import Session
+
+from app.auth.deps import get_current_user
+from app.db.session import get_session
+from app.models import User
+from app.schemas import api as s
+from app.services import invitation_service
+
+router = APIRouter(prefix="/invitations", tags=["invitations"])
+
+
+@router.get("", response_model=list[s.InvitationRead])
+def my_invitations(
+    session: Session = Depends(get_session),
+    user: User = Depends(get_current_user),
+) -> list[dict]:
+    return invitation_service.list_for_user(session, user.id)  # type: ignore[arg-type]
+
+
+@router.post("/{invitation_id}/accept", response_model=s.OkResponse)
+def accept_invitation(
+    invitation_id: int,
+    session: Session = Depends(get_session),
+    user: User = Depends(get_current_user),
+) -> s.OkResponse:
+    invitation_service.accept(session, user, invitation_id)
+    return s.OkResponse()
+
+
+@router.post("/{invitation_id}/decline", response_model=s.OkResponse)
+def decline_invitation(
+    invitation_id: int,
+    session: Session = Depends(get_session),
+    user: User = Depends(get_current_user),
+) -> s.OkResponse:
+    invitation_service.decline(session, user, invitation_id)
+    return s.OkResponse()
diff --git a/backend/app/schemas/api.py b/backend/app/schemas/api.py
index 9e5f466..3a1e73d 100644
--- a/backend/app/schemas/api.py
+++ b/backend/app/schemas/api.py
@@ -149,6 +149,14 @@ class MemberRoleUpdate(BaseModel):
     role: str
 
 
+class InvitationRead(BaseModel):
+    id: int
+    group_id: int
+    group_name: str
+    invited_by_nickname: str | None = None
+    created_at: str
+
+
 # ─── Партии ──────────────────────────────────────────────────────────────────
 
 class RandomizeRequest(BaseModel):
diff --git a/backend/app/services/invitation_service.py b/backend/app/services/invitation_service.py
new file mode 100644
index 0000000..5796e97
--- /dev/null
+++ b/backend/app/services/invitation_service.py
@@ -0,0 +1,130 @@
+"""Приглашения в группу: создание (любым участником), список, принятие, отклонение.
+
+Хранятся только ожидающие приглашения; ответ удаляет строку (accept → создаётся
+GroupMember). Лимит участников — общий с membership_service.MAX_GROUP_SIZE.
+"""
+from __future__ import annotations
+
+from sqlmodel import Session, select
+
+from app.core.errors import ConflictError, NotFoundError, ValidationError
+from app.core.timeutil import iso_utc
+from app.models import Group, GroupInvitation, GroupMember, User
+from app.services.membership_service import MAX_GROUP_SIZE
+
+
+def _member_exists(session: Session, group_id: int, user_id: int) -> bool:
+    return (
+        session.exec(
+            select(GroupMember.id).where(
+                GroupMember.group_id == group_id, GroupMember.user_id == user_id
+            )
+        ).first()
+        is not None
+    )
+
+
+def _counts(session: Session, group_id: int) -> tuple[int, int]:
+    members = len(
+        session.exec(select(GroupMember.id).where(GroupMember.group_id == group_id)).all()
+    )
+    pending = len(
+        session.exec(
+            select(GroupInvitation.id).where(GroupInvitation.group_id == group_id)
+        ).all()
+    )
+    return members, pending
+
+
+def create_invitation(
+    session: Session, group: Group, inviter: User, nickname: str
+) -> tuple[GroupInvitation, User]:
+    nickname = (nickname or "").strip()
+    if not nickname:
+        raise ValidationError("Укажите никнейм игрока.")
+    user = session.exec(select(User).where(User.nickname == nickname)).first()
+    if user is None:
+        raise NotFoundError("Игрок с таким ником не найден.")
+    if _member_exists(session, group.id, user.id):  # type: ignore[arg-type]
+        raise ConflictError("Игрок уже в группе.")
+
+    existing = session.exec(
+        select(GroupInvitation).where(
+            GroupInvitation.group_id == group.id, GroupInvitation.user_id == user.id
+        )
+    ).first()
+    if existing is not None:
+        raise ConflictError("Игрок уже приглашён в эту группу.")
+
+    members, pending = _counts(session, group.id)  # type: ignore[arg-type]
+    if members + pending >= MAX_GROUP_SIZE:
+        raise ConflictError(f"В группе нет мест (максимум {MAX_GROUP_SIZE}).")
+
+    inv = GroupInvitation(
+        group_id=group.id, user_id=user.id, invited_by_id=inviter.id  # type: ignore[arg-type]
+    )
+    session.add(inv)
+    session.commit()
+    session.refresh(inv)
+    return inv, user
+
+
+def list_for_user(session: Session, user_id: int) -> list[dict]:
+    rows = session.exec(
+        select(GroupInvitation, Group.name).join(Group, Group.id == GroupInvitation.group_id)
+        .where(GroupInvitation.user_id == user_id)
+        .order_by(GroupInvitation.created_at.desc())
+    ).all()
+    out = []
+    for inv, gname in rows:
+        inviter_nick = None
+        if inv.invited_by_id is not None:
+            inviter = session.get(User, inv.invited_by_id)
+            inviter_nick = inviter.nickname if inviter else None
+        out.append(
+            {
+                "id": inv.id,
+                "group_id": inv.group_id,
+                "group_name": gname,
+                "invited_by_nickname": inviter_nick,
+                "created_at": iso_utc(inv.created_at),
+            }
+        )
+    return out
+
+
+def _own_invitation(session: Session, user: User, invitation_id: int) -> GroupInvitation:
+    inv = session.get(GroupInvitation, invitation_id)
+    if inv is None or inv.user_id != user.id:
+        raise NotFoundError("Приглашение не найдено.")
+    return inv
+
+
+def accept(session: Session, user: User, invitation_id: int) -> Group:
+    inv = _own_invitation(session, user, invitation_id)
+    group = session.get(Group, inv.group_id)
+    if group is None:
+        session.delete(inv)
+        session.commit()
+        raise NotFoundError("Группа не найдена.")
+
+    if not _member_exists(session, group.id, user.id):  # type: ignore[arg-type]
+        members, _ = _counts(session, group.id)  # type: ignore[arg-type]
+        if members >= MAX_GROUP_SIZE:
+            raise ConflictError(f"В группе нет мест (максимум {MAX_GROUP_SIZE}).")
+        session.add(
+            GroupMember(group_id=group.id, user_id=user.id, role="member")  # type: ignore[arg-type]
+        )
+        if user.active_group_id is None:  # первая группа — делаем активной
+            user.active_group_id = group.id
+            session.add(user)
+
+    session.delete(inv)
+    session.commit()
+    return group
+
+
+def decline(session: Session, user: User, invitation_id: int) -> None:
+    inv = _own_invitation(session, user, invitation_id)
+    session.delete(inv)
+    session.commit()
diff --git a/backend/tests/conftest.py b/backend/tests/conftest.py
index 8434995..dc9bbfa 100644
--- a/backend/tests/conftest.py
+++ b/backend/tests/conftest.py
@@ -15,13 +15,13 @@ os.environ["FS_STARTUP_BOOTSTRAP"] = "0"  # тесты сами поднимаю
 import pytest  # noqa: E402
 from fastapi.testclient import TestClient  # noqa: E402
 from sqlalchemy.pool import StaticPool  # noqa: E402
-from sqlmodel import Session, SQLModel, create_engine  # noqa: E402
+from sqlmodel import Session, SQLModel, create_engine, select  # noqa: E402
 
 import app.models  # noqa: F401,E402  (регистрация моделей)
 from app.core.security import hash_password  # noqa: E402
 from app.db.session import get_session  # noqa: E402
 from app.main import app  # noqa: E402
-from app.models import User  # noqa: E402
+from app.models import AuthIdentity, GroupMember, User  # noqa: E402
 from app.seed.reference_data import seed_reference_data  # noqa: E402
 
 
@@ -86,6 +86,32 @@ def login(client: TestClient, nickname: str) -> dict:
     return r.json()
 
 
+def add_group_member(engine, group_id: int, nickname: str, role: str = "member") -> int:
+    """Подготовка данных: добавить игрока в группу напрямую (в обход приглашений).
+
+    Создаёт пользователя при отсутствии. Возвращает user_id. Нужен, т.к. через HTTP
+    прямого добавления больше нет — только приглашения (см. invitation_service)."""
+    with Session(engine) as s:
+        user = s.exec(select(User).where(User.nickname == nickname)).first()
+        if user is None:
+            user = User(nickname=nickname, role="player", auth_provider="stub")
+            s.add(user)
+            s.commit()
+            s.refresh(user)
+            # AuthIdentity нужен, чтобы dev-вход (login) нашёл того же игрока, а не создал дубль.
+            s.add(AuthIdentity(user_id=user.id, provider="stub", external_id=nickname))
+            s.commit()
+        exists = s.exec(
+            select(GroupMember).where(
+                GroupMember.group_id == group_id, GroupMember.user_id == user.id
+            )
+        ).first()
+        if exists is None:
+            s.add(GroupMember(group_id=group_id, user_id=user.id, role=role))
+            s.commit()
+        return user.id  # type: ignore[return-value]
+
+
 def start_match(client: TestClient, group_id: int, roster: list[dict]):
     """roster: [{user_id, faction_id, was_random?}] → ответ старта (in_progress)."""
     return client.post(
diff --git a/backend/tests/test_admin_extra.py b/backend/tests/test_admin_extra.py
index 0e75643..604e142 100644
--- a/backend/tests/test_admin_extra.py
+++ b/backend/tests/test_admin_extra.py
@@ -3,7 +3,7 @@ from __future__ import annotations
 
 from fastapi.testclient import TestClient
 
-from tests.conftest import create_finished_match, csrf_headers, login, start_match
+from tests.conftest import add_group_member, create_finished_match, csrf_headers, login, start_match
 
 
 def _exp_id(client: TestClient, code: str) -> int:
@@ -20,26 +20,25 @@ def _admin_login(client: TestClient, make_admin) -> None:
     assert r.status_code == 200, r.text
 
 
-def test_group_size_limit(client: TestClient):
+def test_group_invite_capacity_limit(client: TestClient):
     login(client, "Owner")
     gid = client.post(
         "/api/groups", json={"name": "Большая", "expansion_ids": []}, headers=csrf_headers(client)
     ).json()["id"]
-    # owner = 1; добавляем до 10, 10-й участник сверх лимита → 409.
     for i in range(1, 11):
         client.post("/api/auth/dev/users", json={"nickname": f"U{i}"}, headers=csrf_headers(client))
     statuses = []
     for i in range(1, 11):
         r = client.post(
-            f"/api/groups/{gid}/members", json={"nickname": f"U{i}"}, headers=csrf_headers(client)
+            f"/api/groups/{gid}/invitations", json={"nickname": f"U{i}"}, headers=csrf_headers(client)
         )
         statuses.append(r.status_code)
-    # 9 успешных (итого 10 с владельцем), 10-й — отказ.
+    # owner(1) + 9 приглашений = 10 (лимит мест); 10-е приглашение сверх лимита → 409.
     assert statuses[:9] == [200] * 9
     assert statuses[9] == 409
 
 
-def test_match_player_limit(client: TestClient):
+def test_match_player_limit(client: TestClient, engine):
     me = login(client, "Owner")
     fw, fv = _exp_id(client, "forgotten_worlds"), _exp_id(client, "forsaken_voids")
     gid = client.post(
@@ -47,12 +46,7 @@ def test_match_player_limit(client: TestClient):
     ).json()["id"]
     ids = [me["id"]]
     for i in range(1, 7):
-        client.post("/api/auth/dev/users", json={"nickname": f"P{i}"}, headers=csrf_headers(client))
-        ids.append(
-            client.post(
-                f"/api/groups/{gid}/members", json={"nickname": f"P{i}"}, headers=csrf_headers(client)
-            ).json()["user_id"]
-        )
+        ids.append(add_group_member(engine, gid, f"P{i}"))
     factions = client.get(f"/api/groups/{gid}/factions").json()
     fids = [f["id"] for f in factions]
     # 7 игроков на старте → 422 (максимум 6).
@@ -62,15 +56,12 @@ def test_match_player_limit(client: TestClient):
     assert "6" in r.json()["error"]["message"]
 
 
-def test_admin_edit_match_and_filters(client: TestClient, make_admin):
+def test_admin_edit_match_and_filters(client: TestClient, make_admin, engine):
     me = login(client, "Аня")
     gid = client.post(
         "/api/groups", json={"name": "Группа", "expansion_ids": []}, headers=csrf_headers(client)
     ).json()["id"]
-    client.post("/api/auth/dev/users", json={"nickname": "Боря"}, headers=csrf_headers(client))
-    b = client.post(
-        f"/api/groups/{gid}/members", json={"nickname": "Боря"}, headers=csrf_headers(client)
-    ).json()["user_id"]
+    b = add_group_member(engine, gid, "Боря")
     factions = {f["code"]: f["id"] for f in client.get(f"/api/groups/{gid}/factions").json()}
     mid = create_finished_match(
         client,
@@ -129,17 +120,14 @@ def test_admin_rename_account(client: TestClient, make_admin):
     assert r.status_code == 422, r.text
 
 
-def test_dev_delete_account_keeps_matches(client: TestClient, make_admin):
+def test_dev_delete_account_keeps_matches(client: TestClient, make_admin, engine):
     """DEV-удаление: аккаунт удаляется, партии живут (игрок вычёркивается),
     его созданные партии и группы переназначаются на админа."""
     me = login(client, "Аня")  # владелец группы и создатель партии
     gid = client.post(
         "/api/groups", json={"name": "Группа", "expansion_ids": []}, headers=csrf_headers(client)
     ).json()["id"]
-    client.post("/api/auth/dev/users", json={"nickname": "Боря"}, headers=csrf_headers(client))
-    b = client.post(
-        f"/api/groups/{gid}/members", json={"nickname": "Боря"}, headers=csrf_headers(client)
-    ).json()["user_id"]
+    b = add_group_member(engine, gid, "Боря")
     factions = {f["code"]: f["id"] for f in client.get(f"/api/groups/{gid}/factions").json()}
     mid = create_finished_match(
         client,
@@ -187,15 +175,12 @@ def test_dev_delete_account_rejects_admin(client: TestClient, make_admin):
     assert r.status_code == 422, r.text
 
 
-def test_admin_rename_faction_system_wide(client: TestClient, make_admin):
+def test_admin_rename_faction_system_wide(client: TestClient, make_admin, engine):
     me = login(client, "Кто-то")
     gid = client.post(
         "/api/groups", json={"name": "Группа", "expansion_ids": []}, headers=csrf_headers(client)
     ).json()["id"]
-    client.post("/api/auth/dev/users", json={"nickname": "Друг"}, headers=csrf_headers(client))
-    b = client.post(
-        f"/api/groups/{gid}/members", json={"nickname": "Друг"}, headers=csrf_headers(client)
-    ).json()["user_id"]
+    b = add_group_member(engine, gid, "Друг")
     factions = {f["code"]: f["id"] for f in client.get(f"/api/groups/{gid}/factions").json()}
     mid = create_finished_match(
         client,
diff --git a/backend/tests/test_core_flow.py b/backend/tests/test_core_flow.py
index 6409c6c..cc98721 100644
--- a/backend/tests/test_core_flow.py
+++ b/backend/tests/test_core_flow.py
@@ -3,7 +3,7 @@ from __future__ import annotations
 
 from fastapi.testclient import TestClient
 
-from tests.conftest import csrf_headers, finish_match, login, start_match
+from tests.conftest import add_group_member, csrf_headers, finish_match, login, start_match
 
 
 def _expansion_id(client: TestClient, code: str) -> int:
@@ -12,7 +12,7 @@ def _expansion_id(client: TestClient, code: str) -> int:
     return next(e["id"] for e in r.json() if e["code"] == code)
 
 
-def test_full_flow(client: TestClient, make_admin):
+def test_full_flow(client: TestClient, make_admin, engine):
     # 1) Вход игрока A — групп ещё нет.
     me = login(client, "Иван")
     assert me["groups"] == []
@@ -44,18 +44,8 @@ def test_full_flow(client: TestClient, make_admin):
     me = client.get("/api/users/me").json()
     assert me["active_group_id"] == gid
 
-    # 4) Создать игрока B и добавить в группу по нику.
-    rb = client.post(
-        "/api/auth/dev/users", json={"nickname": "Олег"}, headers=csrf_headers(client)
-    )
-    assert rb.status_code == 200, rb.text
-    r = client.post(
-        f"/api/groups/{gid}/members",
-        json={"nickname": "Олег"},
-        headers=csrf_headers(client),
-    )
-    assert r.status_code == 200, r.text
-    b_id = r.json()["user_id"]
+    # 4) Игрок B в группе (прямое добавление — подготовка данных; UX-путь теперь приглашения).
+    b_id = add_group_member(engine, gid, "Олег")
 
     # 5) Доступные фракции = база (4) + Forgotten Worlds (4) = 8.
     factions = client.get(f"/api/groups/{gid}/factions").json()
@@ -150,15 +140,12 @@ def test_full_flow(client: TestClient, make_admin):
     assert {"Иван", "Олег"}.issubset(nicks)
 
 
-def test_in_progress_excluded_and_win_reason_required(client: TestClient):
+def test_in_progress_excluded_and_win_reason_required(client: TestClient, engine):
     me = login(client, "Хост")
     gid = client.post(
         "/api/groups", json={"name": "Группа", "expansion_ids": []}, headers=csrf_headers(client)
     ).json()["id"]
-    client.post("/api/auth/dev/users", json={"nickname": "Гость2"}, headers=csrf_headers(client))
-    b = client.post(
-        f"/api/groups/{gid}/members", json={"nickname": "Гость2"}, headers=csrf_headers(client)
-    ).json()["user_id"]
+    b = add_group_member(engine, gid, "Гость2")
     factions = client.get(f"/api/groups/{gid}/factions").json()
     f1, f2 = factions[0]["id"], factions[1]["id"]
 
@@ -202,16 +189,13 @@ def test_in_progress_excluded_and_win_reason_required(client: TestClient):
     assert all(x["id"] != mid for x in client.get("/api/home").json()["in_progress"])
 
 
-def test_owner_can_finish_member_started_match(client: TestClient):
+def test_owner_can_finish_member_started_match(client: TestClient, engine):
     """Владелец группы может завершить партию, начатую другим участником (can_modify с бэкенда)."""
     a = login(client, "Хозяин")
     gid = client.post(
         "/api/groups", json={"name": "Группа", "expansion_ids": []}, headers=csrf_headers(client)
     ).json()["id"]
-    client.post("/api/auth/dev/users", json={"nickname": "Согрупник"}, headers=csrf_headers(client))
-    b = client.post(
-        f"/api/groups/{gid}/members", json={"nickname": "Согрупник"}, headers=csrf_headers(client)
-    ).json()["user_id"]
+    b = add_group_member(engine, gid, "Согрупник")
     factions = client.get(f"/api/groups/{gid}/factions").json()
     f1, f2 = factions[0]["id"], factions[1]["id"]
 
@@ -236,16 +220,14 @@ def test_owner_can_finish_member_started_match(client: TestClient):
     assert fin.status_code == 200, fin.text
 
 
-def test_any_member_can_finish_and_manage(client: TestClient):
+def test_any_member_can_finish_and_manage(client: TestClient, engine):
     """Рядовой участник (не создатель, не владелец) может завершать партии и менять дополнения."""
     a = login(client, "Овнер")
     gid = client.post(
         "/api/groups", json={"name": "Компания", "expansion_ids": []}, headers=csrf_headers(client)
     ).json()["id"]
-    for nick in ("Бэ", "Цэ"):
-        client.post("/api/auth/dev/users", json={"nickname": nick}, headers=csrf_headers(client))
-    b = client.post(f"/api/groups/{gid}/members", json={"nickname": "Бэ"}, headers=csrf_headers(client)).json()["user_id"]
-    c = client.post(f"/api/groups/{gid}/members", json={"nickname": "Цэ"}, headers=csrf_headers(client)).json()["user_id"]
+    b = add_group_member(engine, gid, "Бэ")
+    c = add_group_member(engine, gid, "Цэ")
     fids = [f["id"] for f in client.get(f"/api/groups/{gid}/factions").json()]
 
     # Владелец стартует партию A+B+C.
@@ -305,18 +287,14 @@ def test_disabled_account_cannot_login(client: TestClient, make_admin):
     assert guest_dev["is_active"] is False
 
 
-def test_tie_ranking_and_points(client: TestClient):
+def test_tie_ranking_and_points(client: TestClient, engine):
     """Ничьи: места 1,2,2 валидны; очки делятся; некорректная расстановка отклоняется."""
     me = login(client, "A")
     r = client.post("/api/groups", json={"name": "Группа", "expansion_ids": []},
                     headers=csrf_headers(client))
     gid = r.json()["id"]
-    client.post("/api/auth/dev/users", json={"nickname": "B"}, headers=csrf_headers(client))
-    client.post("/api/auth/dev/users", json={"nickname": "C"}, headers=csrf_headers(client))
-    b = client.post(f"/api/groups/{gid}/members", json={"nickname": "B"},
-                    headers=csrf_headers(client)).json()["user_id"]
-    c = client.post(f"/api/groups/{gid}/members", json={"nickname": "C"},
-                    headers=csrf_headers(client)).json()["user_id"]
+    b = add_group_member(engine, gid, "B")
+    c = add_group_member(engine, gid, "C")
     factions = client.get(f"/api/groups/{gid}/factions").json()
     f1, f2, f3 = (factions[0]["id"], factions[1]["id"], factions[2]["id"])
     a = me["id"]
diff --git a/backend/tests/test_invitations.py b/backend/tests/test_invitations.py
new file mode 100644
index 0000000..872b517
--- /dev/null
+++ b/backend/tests/test_invitations.py
@@ -0,0 +1,97 @@
+"""Приглашения в группу: создание, просмотр, принятие/отклонение, права участника."""
+from __future__ import annotations
+
+from fastapi.testclient import TestClient
+
+from tests.conftest import add_group_member, csrf_headers, login
+
+
+def _group(client: TestClient, name: str = "Группа") -> int:
+    return client.post(
+        "/api/groups", json={"name": name, "expansion_ids": []}, headers=csrf_headers(client)
+    ).json()["id"]
+
+
+def _dev_user(client: TestClient, nick: str) -> None:
+    client.post("/api/auth/dev/users", json={"nickname": nick}, headers=csrf_headers(client))
+
+
+def test_invite_accept_flow(client: TestClient):
+    login(client, "Овнер")
+    gid = _group(client)
+    _dev_user(client, "Гость")
+
+    r = client.post(
+        f"/api/groups/{gid}/invitations", json={"nickname": "Гость"}, headers=csrf_headers(client)
+    )
+    assert r.status_code == 200, r.text
+    assert r.json()["invited_by_nickname"] == "Овнер"
+    # Повторное приглашение → 409.
+    dup = client.post(
+        f"/api/groups/{gid}/invitations", json={"nickname": "Гость"}, headers=csrf_headers(client)
+    )
+    assert dup.status_code == 409, dup.text
+
+    # Приглашённый видит приглашение и принимает.
+    login(client, "Гость")
+    invs = client.get("/api/invitations").json()
+    assert len(invs) == 1
+    assert invs[0]["group_id"] == gid and invs[0]["group_name"] == "Группа"
+    inv_id = invs[0]["id"]
+    acc = client.post(f"/api/invitations/{inv_id}/accept", headers=csrf_headers(client))
+    assert acc.status_code == 200, acc.text
+    # Стал участником; первая группа стала активной; приглашение исчезло.
+    me = client.get("/api/users/me").json()
+    assert me["active_group_id"] == gid
+    assert client.get("/api/invitations").json() == []
+
+    # Теперь он участник → приглашать его повторно нельзя.
+    login(client, "Овнер")
+    again = client.post(
+        f"/api/groups/{gid}/invitations", json={"nickname": "Гость"}, headers=csrf_headers(client)
+    )
+    assert again.status_code == 409, again.text
+    members = client.get(f"/api/groups/{gid}/members").json()
+    assert any(m["nickname"] == "Гость" for m in members)
+
+
+def test_invite_decline(client: TestClient):
+    login(client, "Овнер2")
+    gid = _group(client)
+    _dev_user(client, "Гость2")
+    client.post(
+        f"/api/groups/{gid}/invitations", json={"nickname": "Гость2"}, headers=csrf_headers(client)
+    )
+
+    login(client, "Гость2")
+    inv_id = client.get("/api/invitations").json()[0]["id"]
+    dec = client.post(f"/api/invitations/{inv_id}/decline", headers=csrf_headers(client))
+    assert dec.status_code == 200, dec.text
+    assert client.get("/api/invitations").json() == []
+
+    login(client, "Овнер2")
+    members = client.get(f"/api/groups/{gid}/members").json()
+    assert all(m["nickname"] != "Гость2" for m in members)
+
+
+def test_any_member_can_invite(client: TestClient, engine):
+    login(client, "Овнер3")
+    gid = _group(client)
+    add_group_member(engine, gid, "Участник")  # обычный member (не владелец)
+    _dev_user(client, "Новичок")
+
+    # Обычный участник входит и приглашает — должно быть можно (assert_member, не owner).
+    login(client, "Участник")
+    r = client.post(
+        f"/api/groups/{gid}/invitations", json={"nickname": "Новичок"}, headers=csrf_headers(client)
+    )
+    assert r.status_code == 200, r.text
+
+
+def test_invite_unknown_nick_404(client: TestClient):
+    login(client, "Овнер4")
+    gid = _group(client)
+    r = client.post(
+        f"/api/groups/{gid}/invitations", json={"nickname": "НетТакого"}, headers=csrf_headers(client)
+    )
+    assert r.status_code == 404, r.text
diff --git a/backend/tests/test_profile.py b/backend/tests/test_profile.py
index 3615eba..72195ec 100644
--- a/backend/tests/test_profile.py
+++ b/backend/tests/test_profile.py
@@ -3,7 +3,7 @@ from __future__ import annotations
 
 from fastapi.testclient import TestClient
 
-from tests.conftest import create_finished_match, csrf_headers, login
+from tests.conftest import add_group_member, create_finished_match, csrf_headers, login
 
 # Минимальный «PNG»: достаточно сигнатуры — сервер не декодирует, только сниффит тип.
 PNG = b"\x89PNG\r\n\x1a\n" + b"\x00" * 64
@@ -15,16 +15,13 @@ def _use_tmp_uploads(monkeypatch, tmp_path) -> None:
     monkeypatch.setattr(settings, "dev_upload_dir", str(tmp_path))
 
 
-def _finished_match_for(client: TestClient, me: dict) -> int:
+def _finished_match_for(client: TestClient, engine, me: dict) -> int:
     """Группа + второй игрок + одна завершённая партия (чтобы me попал в лидерборд)."""
     exps = [e["id"] for e in client.get("/api/expansions").json()]
     gid = client.post(
         "/api/groups", json={"name": "Группа", "expansion_ids": exps}, headers=csrf_headers(client)
     ).json()["id"]
-    client.post("/api/auth/dev/users", json={"nickname": "Соперник"}, headers=csrf_headers(client))
-    p2 = client.post(
-        f"/api/groups/{gid}/members", json={"nickname": "Соперник"}, headers=csrf_headers(client)
-    ).json()["user_id"]
+    p2 = add_group_member(engine, gid, "Соперник")
     fids = [f["id"] for f in client.get(f"/api/groups/{gid}/factions").json()]
     create_finished_match(
         client,
@@ -110,10 +107,10 @@ def test_public_profile(client: TestClient):
     assert client.get("/api/users/999999/profile").status_code == 404
 
 
-def test_leaderboard_includes_avatar_url(client: TestClient, monkeypatch, tmp_path):
+def test_leaderboard_includes_avatar_url(client: TestClient, engine, monkeypatch, tmp_path):
     _use_tmp_uploads(monkeypatch, tmp_path)
     me = login(client, "Топчик")
-    _finished_match_for(client, me)
+    _finished_match_for(client, engine, me)
 
     def entry_for(uid: int) -> dict:
         board = client.get("/api/stats/leaderboard").json()
diff --git a/frontend/src/api/queryKeys.ts b/frontend/src/api/queryKeys.ts
index 21c0625..f54b4ad 100644
--- a/frontend/src/api/queryKeys.ts
+++ b/frontend/src/api/queryKeys.ts
@@ -15,6 +15,7 @@ export const qk = {
   groupStats: (id: number) => ["group", id, "stats"] as const,
   match: (id: number) => ["match", id] as const,
   authConfig: ["authConfig"] as const,
+  invitations: ["invitations"] as const,
   devUsers: ["devUsers"] as const,
   adminUsers: ["adminUsers"] as const,
   adminGroups: ["adminGroups"] as const,
diff --git a/frontend/src/api/schema.d.ts b/frontend/src/api/schema.d.ts
index 6f6c422..974c4e9 100644
--- a/frontend/src/api/schema.d.ts
+++ b/frontend/src/api/schema.d.ts
@@ -305,8 +305,24 @@ export interface paths {
         /** List Members */
         get: operations["list_members_api_groups__group_id__members_get"];
         put?: never;
-        /** Add Member */
-        post: operations["add_member_api_groups__group_id__members_post"];
+        post?: never;
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
+    "/api/groups/{group_id}/invitations": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get?: never;
+        put?: never;
+        /** Invite Member */
+        post: operations["invite_member_api_groups__group_id__invitations_post"];
         delete?: never;
         options?: never;
         head?: never;
@@ -365,6 +381,57 @@ export interface paths {
         patch?: never;
         trace?: never;
     };
+    "/api/invitations": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        /** My Invitations */
+        get: operations["my_invitations_api_invitations_get"];
+        put?: never;
+        post?: never;
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
+    "/api/invitations/{invitation_id}/accept": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get?: never;
+        put?: never;
+        /** Accept Invitation */
+        post: operations["accept_invitation_api_invitations__invitation_id__accept_post"];
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
+    "/api/invitations/{invitation_id}/decline": {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        get?: never;
+        put?: never;
+        /** Decline Invitation */
+        post: operations["decline_invitation_api_invitations__invitation_id__decline_post"];
+        delete?: never;
+        options?: never;
+        head?: never;
+        patch?: never;
+        trace?: never;
+    };
     "/api/matches/randomize-faction": {
         parameters: {
             query?: never;
@@ -1272,6 +1339,19 @@ export interface components {
             /** Min Games */
             min_games: number;
         };
+        /** InvitationRead */
+        InvitationRead: {
+            /** Id */
+            id: number;
+            /** Group Id */
+            group_id: number;
+            /** Group Name */
+            group_name: string;
+            /** Invited By Nickname */
+            invited_by_nickname?: string | null;
+            /** Created At */
+            created_at: string;
+        };
         /** Leaderboard */
         Leaderboard: {
             /**
@@ -2317,7 +2397,7 @@ export interface operations {
             };
         };
     };
-    add_member_api_groups__group_id__members_post: {
+    invite_member_api_groups__group_id__invitations_post: {
         parameters: {
             query?: never;
             header?: never;
@@ -2338,7 +2418,7 @@ export interface operations {
                     [name: string]: unknown;
                 };
                 content: {
-                    "application/json": components["schemas"]["MemberRead"];
+                    "application/json": components["schemas"]["InvitationRead"];
                 };
             };
             /** @description Validation Error */
@@ -2485,6 +2565,88 @@ export interface operations {
             };
         };
     };
+    my_invitations_api_invitations_get: {
+        parameters: {
+            query?: never;
+            header?: never;
+            path?: never;
+            cookie?: never;
+        };
+        requestBody?: never;
+        responses: {
+            /** @description Successful Response */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["InvitationRead"][];
+                };
+            };
+        };
+    };
+    accept_invitation_api_invitations__invitation_id__accept_post: {
+        parameters: {
+            query?: never;
+            header?: never;
+            path: {
+                invitation_id: number;
+            };
+            cookie?: never;
+        };
+        requestBody?: never;
+        responses: {
+            /** @description Successful Response */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["OkResponse"];
+                };
+            };
+            /** @description Validation Error */
+            422: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["HTTPValidationError"];
+                };
+            };
+        };
+    };
+    decline_invitation_api_invitations__invitation_id__decline_post: {
+        parameters: {
+            query?: never;
+            header?: never;
+            path: {
+                invitation_id: number;
+            };
+            cookie?: never;
+        };
+        requestBody?: never;
+        responses: {
+            /** @description Successful Response */
+            200: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["OkResponse"];
+                };
+            };
+            /** @description Validation Error */
+            422: {
+                headers: {
+                    [name: string]: unknown;
+                };
+                content: {
+                    "application/json": components["schemas"]["HTTPValidationError"];
+                };
+            };
+        };
+    };
     randomize_faction_api_matches_randomize_faction_post: {
         parameters: {
             query?: never;
diff --git a/frontend/src/components/GroupInvitations.tsx b/frontend/src/components/GroupInvitations.tsx
new file mode 100644
index 0000000..7b1fd7e
--- /dev/null
+++ b/frontend/src/components/GroupInvitations.tsx
@@ -0,0 +1,58 @@
+import { ApiError } from "../api/client";
+import { useToast } from "../context/ToastContext";
+import { useAcceptInvitation, useDeclineInvitation, useMyInvitations } from "../hooks/invitations";
+
+export function GroupInvitations() {
+  const { data: invitations } = useMyInvitations();
+  const accept = useAcceptInvitation();
+  const decline = useDeclineInvitation();
+  const toast = useToast();
+
+  if (!invitations || invitations.length === 0) return null;
+
+  const onAccept = async (id: number) => {
+    try {
+      await accept.mutateAsync(id);
+      toast.show("Вы вступили в группу");
+    } catch (e) {
+      toast.show(e instanceof ApiError ? e.message : "Ошибка");
+    }
+  };
+
+  const onDecline = async (id: number) => {
+    try {
+      await decline.mutateAsync(id);
+      toast.show("Приглашение отклонено");
+    } catch (e) {
+      toast.show(e instanceof ApiError ? e.message : "Ошибка");
+    }
+  };
+
+  const busy = accept.isPending || decline.isPending;
+
+  return (
+    <div className="card">
+      <h3>Приглашения в группы</h3>
+      <div className="stack">
+        {invitations.map((inv) => (
+          <div key={inv.id} className="row-between">
+            <div>
+              <b>{inv.group_name}</b>
+              {inv.invited_by_nickname && (
+                <div className="muted small">пригласил: {inv.invited_by_nickname}</div>
+              )}
+            </div>
+            <div className="row" style={{ gap: 6 }}>
+              <button className="btn btn-primary small" onClick={() => onAccept(inv.id)} disabled={busy}>
+                Согласиться
+              </button>
+              <button className="btn btn-ghost small" onClick={() => onDecline(inv.id)} disabled={busy}>
+                Отказаться
+              </button>
+            </div>
+          </div>
+        ))}
+      </div>
+    </div>
+  );
+}
diff --git a/frontend/src/domain/types.ts b/frontend/src/domain/types.ts
index 1372b52..1782d7f 100644
--- a/frontend/src/domain/types.ts
+++ b/frontend/src/domain/types.ts
@@ -9,6 +9,7 @@ export type GroupDetail = S["GroupDetail"];
 export type ExpansionRead = S["ExpansionRead"];
 export type FactionRead = S["FactionRead"];
 export type MemberRead = S["MemberRead"];
+export type InvitationRead = S["InvitationRead"];
 export type MatchRead = S["MatchRead"];
 export type MatchList = S["MatchList"];
 export type MatchListItem = S["MatchListItem"];
diff --git a/frontend/src/hooks/groups.ts b/frontend/src/hooks/groups.ts
index c894ebe..869291b 100644
--- a/frontend/src/hooks/groups.ts
+++ b/frontend/src/hooks/groups.ts
@@ -92,17 +92,16 @@ export function useSetGroupExpansions(groupId: number) {
   });
 }
 
-export function useAddMember(groupId: number) {
-  const qc = useQueryClient();
+// Приглашение игрока в группу по нику (вместо прямого добавления).
+export function useInviteMember(groupId: number) {
   return useMutation({
     mutationFn: async (nickname: string) =>
       unwrap(
-        await api.POST("/api/groups/{group_id}/members", {
+        await api.POST("/api/groups/{group_id}/invitations", {
           params: { path: { group_id: groupId } },
           body: { nickname },
         }),
       ),
-    onSuccess: () => qc.invalidateQueries({ queryKey: qk.groupMembers(groupId) }),
   });
 }
 
diff --git a/frontend/src/hooks/invitations.ts b/frontend/src/hooks/invitations.ts
new file mode 100644
index 0000000..4558f13
--- /dev/null
+++ b/frontend/src/hooks/invitations.ts
@@ -0,0 +1,45 @@
+import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
+
+import { api, unwrap } from "../api/client";
+import { qk } from "../api/queryKeys";
+
+export function useMyInvitations() {
+  return useQuery({
+    queryKey: qk.invitations,
+    queryFn: async () => unwrap(await api.GET("/api/invitations")),
+  });
+}
+
+// Принятие/отклонение меняет приглашения, состав групп и активную группу.
+function invalidateAll(qc: ReturnType<typeof useQueryClient>) {
+  qc.invalidateQueries({ queryKey: qk.invitations });
+  qc.invalidateQueries({ queryKey: qk.me });
+  qc.invalidateQueries({ queryKey: qk.groups });
+  qc.invalidateQueries({ queryKey: qk.home });
+}
+
+export function useAcceptInvitation() {
+  const qc = useQueryClient();
+  return useMutation({
+    mutationFn: async (invitationId: number) =>
+      unwrap(
+        await api.POST("/api/invitations/{invitation_id}/accept", {
+          params: { path: { invitation_id: invitationId } },
+        }),
+      ),
+    onSuccess: () => invalidateAll(qc),
+  });
+}
+
+export function useDeclineInvitation() {
+  const qc = useQueryClient();
+  return useMutation({
+    mutationFn: async (invitationId: number) =>
+      unwrap(
+        await api.POST("/api/invitations/{invitation_id}/decline", {
+          params: { path: { invitation_id: invitationId } },
+        }),
+      ),
+    onSuccess: () => invalidateAll(qc),
+  });
+}
diff --git a/frontend/src/pages/GroupPage.tsx b/frontend/src/pages/GroupPage.tsx
index e95482b..150df8c 100644
--- a/frontend/src/pages/GroupPage.tsx
+++ b/frontend/src/pages/GroupPage.tsx
@@ -1,6 +1,7 @@
 import { useNavigate } from "react-router-dom";
 
 import { CreateGroupForm } from "../components/CreateGroupForm";
+import { GroupInvitations } from "../components/GroupInvitations";
 import { GroupSwitcher } from "../components/GroupSwitcher";
 import { Leaderboard } from "../components/Leaderboard";
 import { MatchListView } from "../components/MatchList";
@@ -25,9 +26,10 @@ export function GroupPage() {
         <div className="card">
           <h3>Активная группа не выбрана</h3>
           <p className="muted small">
-            Создайте группу или выберите существующую, чтобы вести учёт партий.
+            Создайте группу, выберите существующую или примите приглашение, чтобы вести учёт партий.
           </p>
         </div>
+        <GroupInvitations />
         <GroupSwitcher />
         <CreateGroupForm />
       </div>
@@ -51,6 +53,8 @@ export function GroupPage() {
         </p>
       </div>
 
+      <GroupInvitations />
+
       <div className="card">
         <h3>Топ в группе</h3>
         {stats && <Leaderboard entries={stats.leaderboard} provisional={stats.provisional} />}
diff --git a/frontend/src/pages/GroupSettingsPage.tsx b/frontend/src/pages/GroupSettingsPage.tsx
index 1b0dfd2..acee949 100644
--- a/frontend/src/pages/GroupSettingsPage.tsx
+++ b/frontend/src/pages/GroupSettingsPage.tsx
@@ -6,7 +6,7 @@ import { Spinner } from "../components/Spinner";
 import { MAX_GROUP_SIZE } from "../domain/constants";
 import { useToast } from "../context/ToastContext";
 import { useMe } from "../hooks/auth";
-import { useAddMember, useGroup, useGroupMembers, useRemoveMember, useSetGroupExpansions } from "../hooks/groups";
+import { useGroup, useGroupMembers, useInviteMember, useRemoveMember, useSetGroupExpansions } from "../hooks/groups";
 import { useExpansions } from "../hooks/reference";
 
 export function GroupSettingsPage() {
@@ -16,7 +16,7 @@ export function GroupSettingsPage() {
   const { data: expansions } = useExpansions();
   const { data: members } = useGroupMembers(groupId);
   const setExpansions = useSetGroupExpansions(groupId ?? 0);
-  const addMember = useAddMember(groupId ?? 0);
+  const inviteMember = useInviteMember(groupId ?? 0);
   const removeMember = useRemoveMember(groupId ?? 0);
   const toast = useToast();
 
@@ -51,9 +51,9 @@ export function GroupSettingsPage() {
     const nick = newNick.trim();
     if (!nick) return;
     try {
-      await addMember.mutateAsync(nick);
+      await inviteMember.mutateAsync(nick);
       setNewNick("");
-      toast.show("Игрок добавлен");
+      toast.show("Приглашение отправлено");
     } catch (e) {
       toast.show(e instanceof ApiError ? e.message : "Ошибка");
     }
@@ -102,8 +102,12 @@ export function GroupSettingsPage() {
         )}
         {isOwner && (members ?? []).length < MAX_GROUP_SIZE && (
           <div className="row" style={{ marginBottom: 10 }}>
-            <input placeholder="Никнейм игрока" value={newNick} onChange={(e) => setNewNick(e.target.value)} />
-            <button className="btn btn-primary" onClick={add}>
+            <input
+              placeholder="Ник игрока — отправить приглашение"
+              value={newNick}
+              onChange={(e) => setNewNick(e.target.value)}
+            />
+            <button className="btn btn-primary" onClick={add} disabled={inviteMember.isPending}>
               <UserPlus size={18} />
             </button>
           </div>