diff --git a/api/v2/user_service.go b/api/v2/user_service.go
index 49bb2d8..21b1f37 100644
--- a/api/v2/user_service.go
+++ b/api/v2/user_service.go
@@ -15,21 +15,24 @@ import (
 	"github.com/boojack/slash/api/auth"
 	apiv2pb "github.com/boojack/slash/proto/gen/api/v2"
 	storepb "github.com/boojack/slash/proto/gen/store"
+	"github.com/boojack/slash/server/service/license"
 	"github.com/boojack/slash/store"
 )
 
 type UserService struct {
 	apiv2pb.UnimplementedUserServiceServer
 
-	Secret string
-	Store  *store.Store
+	Secret         string
+	Store          *store.Store
+	LicenseService *license.LicenseService
 }
 
 // NewUserService creates a new UserService.
-func NewUserService(secret string, store *store.Store) *UserService {
+func NewUserService(secret string, store *store.Store, licenseService *license.LicenseService) *UserService {
 	return &UserService{
-		Secret: secret,
-		Store:  store,
+		Secret:         secret,
+		Store:          store,
+		LicenseService: licenseService,
 	}
 }
 
@@ -73,6 +76,16 @@ func (s *UserService) CreateUser(ctx context.Context, request *apiv2pb.CreateUse
 		return nil, status.Errorf(codes.Internal, "failed to hash password: %v", err)
 	}
 
+	if !s.LicenseService.IsFeatureEnabled(license.FeatureTypeUnlimitedAccounts) {
+		userList, err := s.Store.ListUsers(ctx, &store.FindUser{})
+		if err != nil {
+			return nil, status.Errorf(codes.Internal, "failed to list users: %v", err)
+		}
+		if len(userList) >= 3 {
+			return nil, status.Errorf(codes.ResourceExhausted, "maximum number of users reached")
+		}
+	}
+
 	user, err := s.Store.CreateUser(ctx, &store.User{
 		Email:        request.User.Email,
 		Nickname:     request.User.Nickname,
diff --git a/api/v2/v2.go b/api/v2/v2.go
index fb39c90..f13f1c6 100644
--- a/api/v2/v2.go
+++ b/api/v2/v2.go
@@ -36,7 +36,7 @@ func NewAPIV2Service(secret string, profile *profile.Profile, store *store.Store
 	)
 	apiv2pb.RegisterSubscriptionServiceServer(grpcServer, NewSubscriptionService(profile, store, licenseService))
 	apiv2pb.RegisterWorkspaceServiceServer(grpcServer, NewWorkspaceService(profile, store, licenseService))
-	apiv2pb.RegisterUserServiceServer(grpcServer, NewUserService(secret, store))
+	apiv2pb.RegisterUserServiceServer(grpcServer, NewUserService(secret, store, licenseService))
 	apiv2pb.RegisterUserSettingServiceServer(grpcServer, NewUserSettingService(store))
 	apiv2pb.RegisterShortcutServiceServer(grpcServer, NewShortcutService(secret, store))
 	reflection.Register(grpcServer)
diff --git a/api/v2/workspace_service.go b/api/v2/workspace_service.go
index 9193ea9..71b59ca 100644
--- a/api/v2/workspace_service.go
+++ b/api/v2/workspace_service.go
@@ -33,7 +33,16 @@ func NewWorkspaceService(profile *profile.Profile, store *store.Store, licenseSe
 func (s *WorkspaceService) GetWorkspaceProfile(ctx context.Context, _ *apiv2pb.GetWorkspaceProfileRequest) (*apiv2pb.GetWorkspaceProfileResponse, error) {
 	profile := &apiv2pb.WorkspaceProfile{
 		Mode: s.Profile.Mode,
+		Plan: apiv2pb.PlanType_PRO,
 	}
+
+	// Load subscription plan from license service.
+	subscription, err := s.LicenseService.GetSubscription(ctx)
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "failed to get subscription: %v", err)
+	}
+	profile.Plan = subscription.Plan
+
 	workspaceSetting, err := s.GetWorkspaceSetting(ctx, &apiv2pb.GetWorkspaceSettingRequest{})
 	if err != nil {
 		return nil, status.Errorf(codes.Internal, "failed to get workspace setting: %v", err)
diff --git a/server/service/license/license.go b/server/service/license/license.go
index e27ed06..74f7f0f 100644
--- a/server/service/license/license.go
+++ b/server/service/license/license.go
@@ -96,6 +96,10 @@ func (s *LicenseService) UpdateSubscription(ctx context.Context, licenseKey stri
 	return s.LoadSubscription(ctx)
 }
 
+func (s *LicenseService) GetSubscription(ctx context.Context) (*apiv2pb.Subscription, error) {
+	return s.LoadSubscription(ctx)
+}
+
 func (s *LicenseService) IsFeatureEnabled(feature FeatureType) bool {
 	matrix, ok := FeatureMatrix[feature]
 	if !ok {