diff --git a/src/application/ports/file_ports.rs b/src/application/ports/file_ports.rs
index 50ef37cc..d4135a2c 100644
--- a/src/application/ports/file_ports.rs
+++ b/src/application/ports/file_ports.rs
@@ -257,7 +257,7 @@ pub trait FileRetrievalUseCase: Send + Sync + 'static {
 
 /// Primary port for file management operations
 pub trait FileManagementUseCase: Send + Sync + 'static {
-    async fn has_permission(
+    async fn require_permission(
         &self,
         caller_id: Uuid,
         permission: Permission,
diff --git a/src/application/ports/folder_ports.rs b/src/application/ports/folder_ports.rs
index f34e61ad..8b547ef9 100644
--- a/src/application/ports/folder_ports.rs
+++ b/src/application/ports/folder_ports.rs
@@ -9,7 +9,7 @@ use crate::common::errors::DomainError;
 use crate::domain::services::authorization::Permission;
 
 pub trait FolderUseCase: Send + Sync + 'static {
-    async fn has_permission(
+    async fn require_permission(
         &self,
         caller_id: Uuid,
         permission: Permission,
diff --git a/src/application/services/file_management_service.rs b/src/application/services/file_management_service.rs
index 8f875a7b..797a1434 100644
--- a/src/application/services/file_management_service.rs
+++ b/src/application/services/file_management_service.rs
@@ -225,7 +225,7 @@ impl FileManagementService {
 }
 
 impl FileManagementUseCase for FileManagementService {
-    async fn has_permission(
+    async fn require_permission(
         &self,
         caller_id: Uuid,
         permission: Permission,
diff --git a/src/application/services/folder_service.rs b/src/application/services/folder_service.rs
index 03ba62ac..f962edcf 100644
--- a/src/application/services/folder_service.rs
+++ b/src/application/services/folder_service.rs
@@ -41,7 +41,7 @@ impl FolderService {
         struct FolderServiceStub;
 
         impl FolderUseCase for FolderServiceStub {
-            async fn has_permission(
+            async fn require_permission(
                 &self,
                 _caller_id: Uuid,
                 _permission: Permission,
@@ -175,7 +175,7 @@ impl FolderUseCase for FolderService {
     /// large request bodies (file upload, chunked upload). The authoritative
     /// check happens again inside the upload/management services before any
     /// DB write — this is a UX/resource optimization, not a security boundary.
-    async fn has_permission(
+    async fn require_permission(
         &self,
         caller_id: Uuid,
         permission: Permission,
diff --git a/src/common/stubs.rs b/src/common/stubs.rs
index ca4972a3..9b35f53c 100644
--- a/src/common/stubs.rs
+++ b/src/common/stubs.rs
@@ -356,7 +356,7 @@ impl I18nService for StubI18nService {
 pub struct StubFolderUseCase;
 
 impl FolderUseCase for StubFolderUseCase {
-    async fn has_permission(
+    async fn require_permission(
         &self,
         _caller_id: Uuid,
         _permission: Permission,
@@ -637,7 +637,7 @@ impl FileRetrievalUseCase for StubFileRetrievalUseCase {
 pub struct StubFileManagementUseCase;
 
 impl FileManagementUseCase for StubFileManagementUseCase {
-    async fn has_permission(
+    async fn require_permission(
         &self,
         _caller_id: Uuid,
         _permission: Permission,
diff --git a/src/interfaces/api/handlers/chunked_upload_handler.rs b/src/interfaces/api/handlers/chunked_upload_handler.rs
index 10fbe900..893060bc 100644
--- a/src/interfaces/api/handlers/chunked_upload_handler.rs
+++ b/src/interfaces/api/handlers/chunked_upload_handler.rs
@@ -129,7 +129,7 @@ impl ChunkedUploadHandler {
             && let Err(err) = state
                 .applications
                 .folder_service_concrete
-                .has_permission(auth_user.id, Permission::Create, fid)
+                .require_permission(auth_user.id, Permission::Create, fid)
                 .await
         {
             tracing::warn!(
diff --git a/src/interfaces/api/handlers/file_handler.rs b/src/interfaces/api/handlers/file_handler.rs
index 4ffbac29..b303ef76 100644
--- a/src/interfaces/api/handlers/file_handler.rs
+++ b/src/interfaces/api/handlers/file_handler.rs
@@ -124,7 +124,7 @@ impl FileHandler {
                     && let Err(err) = state
                         .applications
                         .folder_service_concrete
-                        .has_permission(auth_user.id, Permission::Create, fid)
+                        .require_permission(auth_user.id, Permission::Create, fid)
                         .await
                 {
                     tracing::warn!(
@@ -333,7 +333,7 @@ impl FileHandler {
         if let Err(err) = state
             .applications
             .file_management_service
-            .has_permission(auth_user.id, Permission::Read, &id)
+            .require_permission(auth_user.id, Permission::Read, &id)
             .await
         {
             return AppError::from(err).into_response();
@@ -493,7 +493,7 @@ impl FileHandler {
         if let Err(err) = state
             .applications
             .file_management_service
-            .has_permission(auth_user.id, Permission::Update, &id)
+            .require_permission(auth_user.id, Permission::Update, &id)
             .await
         {
             return AppError::from(err).into_response();
@@ -855,7 +855,7 @@ impl FileHandler {
         if let Err(err) = state
             .applications
             .file_management_service
-            .has_permission(auth_user.id, Permission::Read, &file_id)
+            .require_permission(auth_user.id, Permission::Read, &file_id)
             .await
         {
             return AppError::from(err).into_response();
diff --git a/tests/api/grants.hurl b/tests/api/grants.hurl
index 54e593e6..059efd08 100644
--- a/tests/api/grants.hurl
+++ b/tests/api/grants.hurl
@@ -320,7 +320,7 @@ jsonpath "$" count == 0
 #             · GET /{id}/metadata · GET /{id}/thumbnail/{size}
 #             · PUT /{id}/thumbnail/{size} (push, Update)
 #             · PUT /{id}/rename · PUT /{id}/move · DELETE /{id}
-#             · POST /upload (via folder has_permission)
+#             · POST /upload (via folder require_permission)
 #
 # Listing endpoints that are still owner-scoped (GET /api/folders root,
 # GET /api/folders/paginated) are NOT covered here — they don't
@@ -476,7 +476,7 @@ Authorization: Bearer {{adam_token}}
 HTTP 404
 
 # ── Chunked upload: cannot start session in alice's folder ──
-# create_upload_impl pre-checks Permission::Create via has_permission.
+# create_upload_impl pre-checks Permission::Create via require_permission.
 POST {{base_url}}/api/uploads
 Authorization: Bearer {{adam_token}}
 Content-Type: application/json