diff --git a/.env.example b/.env.example
index 6f9a2956..43517575 100644
--- a/.env.example
+++ b/.env.example
@@ -9,3 +9,4 @@ TOKEN_KEY=
 KNOQ_VERSION=
 KNOQ_REVISION=
 DEVELOPMENT=
+TRAQ_ACCESS_TOKEN=
diff --git a/.gitignore b/.gitignore
index dd9b185d..3406127d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,4 @@ debug
 
 # for development
 _development/*
+.env
diff --git a/README.md b/README.md
index 482d90ee..2adf04e0 100644
--- a/README.md
+++ b/README.md
@@ -44,6 +44,7 @@ knoQ の全ての機能を動作させるためには、追加の情報が必要
 | KNOQ_VERSION        | 環境変数 | UNKNOWN                                | knoQ のバージョン (github actions でイメージ作成時に指定)       |
 | KNOQ_REVISION       | 環境変数 | UNKNOWN                                | git の sha1 (github actions でイメージ作成時に指定)        |
 | DEVELOPMENT         | 環境変数 |                                        | 開発時かどうか                                        |
+| TRAQ_ACCESS_TOKEN   | 環境変数 |                                        | traQ へのアクセストークン                                  |
 | service.json        | ファイル | 空のファイル                                 | google calendar api に必要（権限は必要なし）               |
 
 ### テスト
diff --git a/compose.yml b/compose.yml
index ec1953d3..6b008310 100755
--- a/compose.yml
+++ b/compose.yml
@@ -25,6 +25,7 @@ services:
       KNOQ_VERSION: ${KNOQ_VERSION:-dev}
       DEVELOPMENT: true
       GORM_LOG_LEVEL: info
+      TRAQ_ACCESS_TOKEN:
     ports:
       - "${APP_PORT:-3000}:3000"
     depends_on:
diff --git a/infra/traq/group.go b/infra/traq/group.go
index c0ef2821..9b05945c 100644
--- a/infra/traq/group.go
+++ b/infra/traq/group.go
@@ -9,9 +9,10 @@ import (
 	"github.com/traPtitech/go-traq"
 )
 
-func (repo *TraQRepository) GetGroup(token *oauth2.Token, groupID uuid.UUID) (*traq.UserGroup, error) {
-	ctx := context.TODO()
-	apiClient := NewAPIClient(ctx, token)
+func (repo *TraQRepository) GetGroup(groupID uuid.UUID) (*traq.UserGroup, error) {
+	ctx := context.WithValue(context.TODO(), traq.ContextAccessToken, repo.ServerAccessToken)
+	apiClient := traq.NewAPIClient(traqAPIConfig)
+	// TODO: 一定期間キャッシュする
 	group, resp, err := apiClient.GroupApi.GetUserGroup(ctx, groupID.String()).Execute()
 	if err != nil {
 		return nil, err
@@ -23,9 +24,10 @@ func (repo *TraQRepository) GetGroup(token *oauth2.Token, groupID uuid.UUID) (*t
 	return group, err
 }
 
-func (repo *TraQRepository) GetAllGroups(token *oauth2.Token) ([]traq.UserGroup, error) {
-	ctx := context.TODO()
-	apiClient := NewAPIClient(ctx, token)
+func (repo *TraQRepository) GetAllGroups() ([]traq.UserGroup, error) {
+	ctx := context.WithValue(context.TODO(), traq.ContextAccessToken, repo.ServerAccessToken)
+	apiClient := traq.NewAPIClient(traqAPIConfig)
+	// TODO: 一定期間キャッシュする
 	groups, resp, err := apiClient.GroupApi.GetUserGroups(ctx).Execute()
 	if err != nil {
 		return nil, err
@@ -39,7 +41,7 @@ func (repo *TraQRepository) GetAllGroups(token *oauth2.Token) ([]traq.UserGroup,
 
 func (repo *TraQRepository) GetUserBelongingGroupIDs(token *oauth2.Token, userID uuid.UUID) ([]uuid.UUID, error) {
 	ctx := context.TODO()
-	apiClient := NewAPIClient(ctx, token)
+	apiClient := NewOauth2APIClient(ctx, token)
 	user, resp, err := apiClient.UserApi.GetUser(ctx, userID.String()).Execute()
 	if err != nil {
 		return nil, err
diff --git a/infra/traq/traq.go b/infra/traq/traq.go
index 5162acd3..7c5a6405 100644
--- a/infra/traq/traq.go
+++ b/infra/traq/traq.go
@@ -14,8 +14,9 @@ import (
 
 // TraQRepository is traq
 type TraQRepository struct {
-	Config *oauth2.Config
-	URL    string
+	Config            *oauth2.Config
+	URL               string
+	ServerAccessToken string
 }
 
 var TraQDefaultConfig = &oauth2.Config{
@@ -29,6 +30,8 @@ var TraQDefaultConfig = &oauth2.Config{
 	},
 }
 
+var traqAPIConfig = traq.NewConfiguration()
+
 func newPKCE() (pkceOptions []oauth2.AuthCodeOption, codeVerifier string) {
 	codeVerifier = random.AlphaNumeric(43, true)
 	result := sha256.Sum256([]byte(codeVerifier))
@@ -64,8 +67,8 @@ func (repo *TraQRepository) GetOAuthToken(query, state, codeVerifier string) (*o
 	return repo.Config.Exchange(ctx, code, option)
 }
 
-func NewAPIClient(ctx context.Context, token *oauth2.Token) *traq.APIClient {
-	traqconf := traq.NewConfiguration()
+func NewOauth2APIClient(ctx context.Context, token *oauth2.Token) *traq.APIClient {
+	traqconf := traqAPIConfig
 	conf := TraQDefaultConfig
 	traqconf.HTTPClient = conf.Client(ctx, token)
 	apiClient := traq.NewAPIClient(traqconf)
diff --git a/infra/traq/user.go b/infra/traq/user.go
index 32d4751c..f8c87e0f 100644
--- a/infra/traq/user.go
+++ b/infra/traq/user.go
@@ -8,9 +8,10 @@ import (
 	"golang.org/x/oauth2"
 )
 
-func (repo *TraQRepository) GetUser(token *oauth2.Token, userID uuid.UUID) (*traq.User, error) {
-	ctx := context.TODO()
-	apiClient := NewAPIClient(ctx, token)
+func (repo *TraQRepository) GetUser(userID uuid.UUID) (*traq.User, error) {
+	ctx := context.WithValue(context.TODO(), traq.ContextAccessToken, repo.ServerAccessToken)
+	apiClient := traq.NewAPIClient(traqAPIConfig)
+	// TODO: 一定期間キャッシュする
 	userDetail, resp, err := apiClient.UserApi.GetUser(ctx, userID.String()).Execute()
 	if err != nil {
 		return nil, err
@@ -31,9 +32,10 @@ func (repo *TraQRepository) GetUser(token *oauth2.Token, userID uuid.UUID) (*tra
 	return &user, err
 }
 
-func (repo *TraQRepository) GetUsers(token *oauth2.Token, includeSuspended bool) ([]traq.User, error) {
-	ctx := context.TODO()
-	apiClient := NewAPIClient(ctx, token)
+func (repo *TraQRepository) GetUsers(includeSuspended bool) ([]traq.User, error) {
+	ctx := context.WithValue(context.TODO(), traq.ContextAccessToken, repo.ServerAccessToken)
+	apiClient := traq.NewAPIClient(traqAPIConfig)
+	// TODO: 一定期間キャッシュする
 	users, resp, err := apiClient.UserApi.GetUsers(ctx).IncludeSuspended(includeSuspended).Execute()
 	if err != nil {
 		return nil, err
@@ -47,7 +49,7 @@ func (repo *TraQRepository) GetUsers(token *oauth2.Token, includeSuspended bool)
 
 func (repo *TraQRepository) GetUserMe(token *oauth2.Token) (*traq.User, error) {
 	ctx := context.TODO()
-	apiClient := NewAPIClient(ctx, token)
+	apiClient := NewOauth2APIClient(ctx, token)
 	userDetail, resp, err := apiClient.MeApi.GetMe(ctx).Execute()
 	if err != nil {
 		return nil, err
diff --git a/main.go b/main.go
index 0e722c0a..909572ee 100644
--- a/main.go
+++ b/main.go
@@ -43,6 +43,10 @@ var (
 	webhookSecret     = getenv("WEBHOOK_SECRET", "")
 	activityChannelID = getenv("ACTIVITY_CHANNEL_ID", "")
 	dailyChannelID    = getenv("DAILY_CHANNEL_ID", "")
+
+	// TODO: traQにClient Credential Flowが実装されたら定期的に取得するように変更する
+	// Issue: https://github.com/traPtitech/traQ/issues/2403
+	traqAccessToken = getenv("TRAQ_ACCESS_TOKEN", "")
 )
 
 func main() {
@@ -66,7 +70,8 @@ func main() {
 				TokenURL: "https://q.trap.jp/api/v3/oauth2/token",
 			},
 		},
-		URL: "https://q.trap.jp/api/v3",
+		URL:               "https://q.trap.jp/api/v3",
+		ServerAccessToken: traqAccessToken,
 	}
 	repo := &repository.Repository{
 		GormRepo: gormRepo,
diff --git a/repository/group.go b/repository/group.go
index 374870e9..18b1821e 100644
--- a/repository/group.go
+++ b/repository/group.go
@@ -74,11 +74,7 @@ func (repo *Repository) GetGroup(groupID uuid.UUID, info *domain.ConInfo) (*doma
 			}
 
 			// traq group
-			t, err := repo.GormRepo.GetToken(info.ReqUserID)
-			if err != nil {
-				return nil, defaultErrorHandling(err)
-			}
-			g, err := repo.TraQRepo.GetGroup(t, groupID)
+			g, err := repo.TraQRepo.GetGroup(groupID)
 			if err != nil {
 				return nil, defaultErrorHandling(err)
 			}
@@ -95,16 +91,12 @@ func (repo *Repository) GetGroup(groupID uuid.UUID, info *domain.ConInfo) (*doma
 
 func (repo *Repository) GetAllGroups(info *domain.ConInfo) ([]*domain.Group, error) {
 	groups := make([]*domain.Group, 0)
-	t, err := repo.GormRepo.GetToken(info.ReqUserID)
-	if err != nil {
-		return nil, defaultErrorHandling(err)
-	}
 	gg, err := repo.GormRepo.GetAllGroups()
 	if err != nil {
 		return nil, defaultErrorHandling(err)
 	}
 	groups = append(groups, db.ConvSPGroupToSPdomainGroup(gg)...)
-	tg, err := repo.TraQRepo.GetAllGroups(t)
+	tg, err := repo.TraQRepo.GetAllGroups()
 	if err != nil {
 		return nil, defaultErrorHandling(err)
 	}
@@ -195,12 +187,7 @@ func (repo *Repository) getTraPGroup(info *domain.ConInfo) *domain.Group {
 }
 
 func (repo *Repository) GetGradeGroupNames(info *domain.ConInfo) ([]string, error) {
-	t, err := repo.GormRepo.GetToken(info.ReqUserID)
-	if err != nil {
-		return nil, defaultErrorHandling(err)
-	}
-
-	groups, err := repo.TraQRepo.GetAllGroups(t)
+	groups, err := repo.TraQRepo.GetAllGroups()
 	if err != nil {
 		return nil, defaultErrorHandling(err)
 	}
diff --git a/repository/user.go b/repository/user.go
index 9aa4956c..7d2ac830 100644
--- a/repository/user.go
+++ b/repository/user.go
@@ -17,11 +17,7 @@ func (repo *Repository) SyncUsers(info *domain.ConInfo) error {
 	if !repo.IsPrivilege(info) {
 		return domain.ErrForbidden
 	}
-	t, err := repo.GormRepo.GetToken(info.ReqUserID)
-	if err != nil {
-		return defaultErrorHandling(err)
-	}
-	traQUsers, err := repo.TraQRepo.GetUsers(t, true)
+	traQUsers, err := repo.TraQRepo.GetUsers(true)
 	if err != nil {
 		return defaultErrorHandling(err)
 	}
@@ -92,18 +88,13 @@ func (repo *Repository) LoginUser(query, state, codeVerifier string) (*domain.Us
 }
 
 func (repo *Repository) GetUser(userID uuid.UUID, info *domain.ConInfo) (*domain.User, error) {
-	t, err := repo.GormRepo.GetToken(info.ReqUserID)
-	if err != nil {
-		return nil, defaultErrorHandling(err)
-	}
-
 	userMeta, err := repo.GormRepo.GetUser(userID)
 	if err != nil {
 		return nil, defaultErrorHandling(err)
 	}
 
 	if userMeta.Provider.Issuer == traQIssuerName {
-		userBody, err := repo.TraQRepo.GetUser(t, userID)
+		userBody, err := repo.TraQRepo.GetUser(userID)
 		if err != nil {
 			return nil, defaultErrorHandling(err)
 		}
@@ -120,17 +111,12 @@ func (repo *Repository) GetUserMe(info *domain.ConInfo) (*domain.User, error) {
 }
 
 func (repo *Repository) GetAllUsers(includeSuspend, includeBot bool, info *domain.ConInfo) ([]*domain.User, error) {
-	t, err := repo.GormRepo.GetToken(info.ReqUserID)
-	if err != nil {
-		return nil, defaultErrorHandling(err)
-	}
-
 	userMetas, err := repo.GormRepo.GetAllUsers(!includeSuspend)
 	if err != nil {
 		return nil, defaultErrorHandling(err)
 	}
 	// TODO fix
-	traQUserBodys, err := repo.TraQRepo.GetUsers(t, includeSuspend)
+	traQUserBodys, err := repo.TraQRepo.GetUsers(includeSuspend)
 	if err != nil {
 		return nil, defaultErrorHandling(err)
 	}