diff --git a/docs/architecture/migration-progress.md b/docs/architecture/migration-progress.md
index d5725da36..14abc5afc 100644
--- a/docs/architecture/migration-progress.md
+++ b/docs/architecture/migration-progress.md
@@ -5,13 +5,13 @@ Status values: `[ ]` not started, `[~]` in progress, `[x]` complete, `[!]` block
 ## Current Context
 
 - Issue: [`rustfs/backlog#660`](https://github.com/rustfs/backlog/issues/660)
-- Branch: `overtrue/arch-storage-api-residual-flat-consumers`
-- Baseline: completed `C-011/C-012/C-013/API-055/API-059/API-079/API-080/API-081/API-082/API-083/API-084/API-085/API-086/API-087/API-088/API-089/API-090/API-091/API-092/API-093/API-094/API-095/API-096/API-097/API-098/API-099/API-100/API-101/API-102/API-103/API-104/API-105/API-106/API-107/API-108/API-109/API-110/API-111/API-112/API-113/API-114/API-115/API-116/API-117/API-118/API-119/API-120/API-121/API-122/API-123/API-124/API-125/API-126/API-127/API-128/API-129/API-130/API-131/API-132/API-133/API-134/API-135/API-136/API-137/API-138/API-139/API-140/API-141/API-142/API-143/API-144/API-145/API-146/API-147/API-148/API-149/API-150/API-151/API-152/API-153/API-154/API-155/API-156/API-157/API-158/API-159/API-160/API-161/API-162/API-163/API-164/API-165/API-166/API-167/API-168/API-169/API-170/API-171/API-172/API-173/API-174/API-175/API-176/API-177/API-178/API-179/API-180/API-181/API-182/API-183/API-184/API-185/API-186/API-187/API-188/API-189/API-190/API-191/API-192/API-193/API-194/API-195/API-196/API-197/API-198/API-199/API-200/API-201/API-202/API-203/API-204/API-205/API-206/API-207/API-208/API-209/API-210/API-211/API-212/API-213/API-214/API-215/API-216/API-217/API-218/API-219/API-220/API-221/API-222/API-223/API-224/API-225/API-226/API-227/API-228/API-229/API-230/API-231/API-232/API-233/API-234/API-235/API-236/API-237/API-238/API-239/API-240/API-241/CTX-002`.
-- Based on: rebased onto current `origin/main` after PR #3905 merged.
+- Branch: `overtrue/arch-rustfs-storage-contract-domain-imports`
+- Baseline: completed `C-011/C-012/C-013/API-055/API-059/API-079/API-080/API-081/API-082/API-083/API-084/API-085/API-086/API-087/API-088/API-089/API-090/API-091/API-092/API-093/API-094/API-095/API-096/API-097/API-098/API-099/API-100/API-101/API-102/API-103/API-104/API-105/API-106/API-107/API-108/API-109/API-110/API-111/API-112/API-113/API-114/API-115/API-116/API-117/API-118/API-119/API-120/API-121/API-122/API-123/API-124/API-125/API-126/API-127/API-128/API-129/API-130/API-131/API-132/API-133/API-134/API-135/API-136/API-137/API-138/API-139/API-140/API-141/API-142/API-143/API-144/API-145/API-146/API-147/API-148/API-149/API-150/API-151/API-152/API-153/API-154/API-155/API-156/API-157/API-158/API-159/API-160/API-161/API-162/API-163/API-164/API-165/API-166/API-167/API-168/API-169/API-170/API-171/API-172/API-173/API-174/API-175/API-176/API-177/API-178/API-179/API-180/API-181/API-182/API-183/API-184/API-185/API-186/API-187/API-188/API-189/API-190/API-191/API-192/API-193/API-194/API-195/API-196/API-197/API-198/API-199/API-200/API-201/API-202/API-203/API-204/API-205/API-206/API-207/API-208/API-209/API-210/API-211/API-212/API-213/API-214/API-215/API-216/API-217/API-218/API-219/API-220/API-221/API-222/API-223/API-224/API-225/API-226/API-227/API-228/API-229/API-230/API-231/API-232/API-233/API-234/API-235/API-236/API-237/API-238/API-239/API-240/API-241/API-242/CTX-002`.
+- Based on: rebased onto current `origin/main` after PR #3908 merged.
 - PR type for this branch: `consumer-migration`
-- Runtime behavior changes: none expected for API-242; external/test local
-  storage API boundaries still expose the same storage-api contracts through
-  consumer-domain modules.
+- Runtime behavior changes: none expected for API-243; RustFS storage, admin,
+  and app storage API boundaries still expose the same storage contracts and
+  helper APIs through domain modules.
 - Rust code changes: route replication pool, outbound TLS generation, runtime
   region, KMS encryption service, runtime support handles, S3 Select DB,
   internode RPC metrics, IAM authorization/handler reads, notification
@@ -82,7 +82,10 @@ Status values: `[ ]` not started, `[~]` in progress, `[x]` complete, `[!]` block
   domain modules, and local ECStore type aliases for admin config and storage
   RPC paths, plus external/test local storage API contract imports through
   local `storage_contracts` aliases and consumer-domain modules instead of
-  root re-exports.
+  root re-exports, plus RustFS storage owner, admin, and app local storage API
+  contract imports through local `storage_contracts` aliases and domain-module
+  exports instead of root re-exports, plus RustFS app/admin storage helper
+  imports through domain-module exports instead of root re-exports.
 - CI/script changes: lock completed owner and test/fuzz boundaries against
   bare/glob imports, scattered raw ECStore facade subpaths, and startup
   runtime/root-server/table/S3/app shared/app bucket/app ECStore/admin facade
@@ -92,13 +95,14 @@ Status values: `[ ]` not started, `[~]` in progress, `[x]` complete, `[!]` block
   event-bridge thin module regressions, plus IAM runtime-source bypasses;
   accept the reviewed AppContext resolver reverse dependencies in the layer
   baseline, and block direct admin AppContext resolver consumers outside the
-  admin runtime-source boundary, block root, app usecase, and storage direct AppContext resolver consumers outside their runtime-source boundaries, catch grouped AppContext imports, reject app usecase storage wildcard imports, reject app-layer S3 DTO and ECFS wildcard imports, narrow the object-usecase ECFS layer baseline entry to `FS`, reject direct storage S3 API helper imports from app usecase files, reject direct storage helper imports from app select/usecase files, reject completed app/admin storage helper bypasses, reject app usecase bypasses for migrated storage IO/compression/set-disk helpers, reject app usecase/test bypasses for migrated storage error, ETag, and storage-class helpers, reject app root bucket owner facade bypasses from migrated app consumers, reject app/admin runtime/data-usage root facade regressions, reject admin root storage facade regressions from migrated admin consumers, reject root/server/startup direct storage facade regressions from migrated outer consumers, reject root/server/startup direct storage contract imports from migrated outer consumers, reject app/admin direct storage contract imports from migrated owner consumers, keep app S3 helper imports routed through `app::storage_api`, reject scanner/heal direct ECStore or storage contract imports outside their local `storage_api` boundaries, reject external runtime/test/fuzz ECStore or storage contract imports outside their local `storage_api` boundaries, reject storage owner direct ECStore/storage-api imports outside the owner-local `storage_api` boundary, reject ECStore internal direct storage-api imports outside the owner-local `storage_api_contracts` boundary, reject direct storage ECFS app usecase construction outside the storage S3 API boundary, reject flat root `storage_api` imports outside the new root-local domain modules, reject flat admin `storage_api` imports outside the new admin domain modules, reject flat app `storage_api` imports outside the new app consumer-domain modules, reject flat external crate-local `storage_api` imports outside the new consumer-domain modules, reject residual flat local `storage_api` imports from notify, ECStore tests/benches, and remaining RustFS app storage API type references, and reject external/test local storage API root contract re-exports.
+  admin runtime-source boundary, block root, app usecase, and storage direct AppContext resolver consumers outside their runtime-source boundaries, catch grouped AppContext imports, reject app usecase storage wildcard imports, reject app-layer S3 DTO and ECFS wildcard imports, narrow the object-usecase ECFS layer baseline entry to `FS`, reject direct storage S3 API helper imports from app usecase files, reject direct storage helper imports from app select/usecase files, reject completed app/admin storage helper bypasses, reject app usecase bypasses for migrated storage IO/compression/set-disk helpers, reject app usecase/test bypasses for migrated storage error, ETag, and storage-class helpers, reject app root bucket owner facade bypasses from migrated app consumers, reject app/admin runtime/data-usage root facade regressions, reject admin root storage facade regressions from migrated admin consumers, reject root/server/startup direct storage facade regressions from migrated outer consumers, reject root/server/startup direct storage contract imports from migrated outer consumers, reject app/admin direct storage contract imports from migrated owner consumers, keep app S3 helper imports routed through `app::storage_api`, reject scanner/heal direct ECStore or storage contract imports outside their local `storage_api` boundaries, reject external runtime/test/fuzz ECStore or storage contract imports outside their local `storage_api` boundaries, reject storage owner direct ECStore/storage-api imports outside the owner-local `storage_api` boundary, reject ECStore internal direct storage-api imports outside the owner-local `storage_api_contracts` boundary, reject direct storage ECFS app usecase construction outside the storage S3 API boundary, reject flat root `storage_api` imports outside the new root-local domain modules, reject flat admin `storage_api` imports outside the new admin domain modules, reject flat app `storage_api` imports outside the new app consumer-domain modules, reject flat external crate-local `storage_api` imports outside the new consumer-domain modules, reject residual flat local `storage_api` imports from notify, ECStore tests/benches, and remaining RustFS app storage API type references, reject external/test local storage API root contract re-exports, reject RustFS local storage API root contract re-exports, and reject RustFS app/admin storage helper root re-exports.
 - Docs changes: record the API-136 through API-242 owner facade,
   runtime-source, ECFS usecase, root storage API domain-boundary, and admin
   storage API domain-boundary cleanup, and app storage API consumer-domain
   cleanup, plus external crate-local and residual local storage API
-  consumer-domain cleanup, plus external/test storage contract root re-export
-  cleanup.
+  consumer-domain cleanup, external/test storage contract root re-export
+  cleanup, RustFS local storage contract root re-export cleanup, and RustFS
+  app/admin storage helper root re-export cleanup.
 
 ## Phase 0 Tasks
 
@@ -5564,14 +5568,32 @@ Status values: `[ ]` not started, `[~]` in progress, `[x]` complete, `[!]` block
     and layer guards, diff hygiene, external root storage-api re-export scan,
     Rust risk scan, and full PR gate before PR.
 
+- [x] `API-243` Segment RustFS storage API root exports by domain module.
+  - Do: replace RustFS storage owner, admin, and app local storage API root
+    contract re-exports with local `storage_contracts` aliases and domain-module
+    exports, and move app/admin storage helper root re-exports into their
+    consumer-domain modules.
+  - Acceptance: RustFS storage owner, admin, app, and root storage API
+    boundaries no longer expose storage-api contracts from their roots, and
+    app/admin boundaries no longer expose storage helpers from their roots;
+    migration rules reject both root re-export regressions.
+  - Must preserve: storage ECFS, RPC, S3 output mapping, admin handlers, app
+    usecases, AppContext/test fixtures, and storage contract call paths.
+  - Verification: focused RustFS compile, formatting, migration and layer
+    guards, diff hygiene, RustFS root storage-api/helper re-export scans, Rust
+    risk scan, and full PR gate before PR.
+
 ## Next PRs
 
-1. `consumer-migration`: continue larger owner boundary batches after API-242.
+1. `consumer-migration`: continue larger owner boundary batches after API-243.
 
 ## Pre-Push Review Log
 
 | Expert | Status | Notes |
 |---|---|---|
+| Quality/architecture | pass | API-243 removes RustFS local storage API root contract/helper re-exports and keeps exposure inside domain modules. |
+| Migration preservation | pass | Storage ECFS/RPC/S3 helpers, admin handlers, app usecases, AppContext fixtures, and test harness consumers keep the same underlying storage contracts and helpers. |
+| Testing/verification | pass | Focused RustFS compile, formatting, migration/layer guards, root storage-api/helper re-export scans, diff hygiene, diff-added Rust risk scan, and full PR gate passed before PR. |
 | Quality/architecture | pass | API-242 removes external/test local storage API root contract re-exports and keeps contract exposure inside consumer-domain modules. |
 | Migration preservation | pass | ECStore tests, heal, IAM, OBS metrics, Swift, S3 Select, and scanner consumers keep the same storage-api contracts and call paths. |
 | Testing/verification | pass | Focused external/test compile, formatting, migration/layer guards, external root storage-api re-export scan, diff hygiene, diff-added Rust risk scan, and full PR gate passed before PR. |
@@ -5839,6 +5861,26 @@ Status values: `[ ]` not started, `[~]` in progress, `[x]` complete, `[!]` block
 
 Passed before push:
 
+- Issue #660 API-243 current slice:
+  - Branch freshness check: rebased onto current `origin/main` after PR #3908
+    merged.
+  - `cargo check --tests --benches -p rustfs -F rustfs-protocols/swift`:
+    passed.
+  - `cargo fmt --all`: passed.
+  - `./scripts/check_architecture_migration_rules.sh`: passed.
+  - `./scripts/check_layer_dependencies.sh`: passed.
+  - RustFS storage-api root re-export scan: passed; storage owner, admin, app,
+    and root storage API boundaries no longer expose `rustfs_storage_api`
+    contracts from their roots.
+  - RustFS app/admin storage helper root re-export scan: passed; app/admin
+    storage API boundaries now expose storage helpers from domain modules.
+  - Diff-added Rust risk scan: passed; no new production unwrap/expect,
+    numeric cast, String error, Box dyn Error, print macro, or relaxed atomic
+    ordering lines.
+  - `cargo fmt --all --check`: passed.
+  - `git diff --check`: passed.
+  - `make pre-pr`: passed.
+
 - Issue #660 API-242 current slice:
   - Branch freshness check: rebased onto current `origin/main` after PR #3905
     merged.
diff --git a/rustfs/src/admin/storage_api.rs b/rustfs/src/admin/storage_api.rs
index c2f8dba2a..53f3f16bf 100644
--- a/rustfs/src/admin/storage_api.rs
+++ b/rustfs/src/admin/storage_api.rs
@@ -15,6 +15,8 @@
 use std::ops::Deref;
 use std::sync::Arc;
 
+use rustfs_storage_api as storage_contracts;
+
 mod ecstore_bucket {
     pub(crate) use crate::storage::ecstore_bucket::{
         bandwidth, bucket_target_sys, lifecycle, metadata, metadata_sys, quota, replication, target, utils, versioning,
@@ -408,17 +410,6 @@ pub(crate) static ERR_TIER_NAME_NOT_UPPERCASE: AdminErrorRef =
     AdminErrorRef(|| &ecstore_tier::tier_handlers::ERR_TIER_NAME_NOT_UPPERCASE);
 pub(crate) static ERR_TIER_NOT_FOUND: AdminErrorRef = AdminErrorRef(|| &ecstore_tier::tier_handlers::ERR_TIER_NOT_FOUND);
 
-pub(crate) use crate::storage::StorageObjectOptions;
-pub(crate) use crate::storage::access::{ReqInfo, authorize_request};
-pub(crate) use crate::storage::request_context::{RequestContext, spawn_traced};
-pub(crate) use rustfs_storage_api::{
-    BucketOperations, BucketOptions, CapabilitySnapshotError, CapabilityState, CapabilityStatus, DeleteBucketOptions,
-    HealOperations, ListOperations, MakeBucketOptions, ObjectIO, ObjectOperations, ObservabilitySnapshot,
-    ObservabilitySnapshotProvider, SRBucketDeleteOp, StorageAdminApi, TopologySnapshot, TopologySnapshotProvider,
-};
-#[cfg(test)]
-pub(crate) use rustfs_storage_api::{MemorySamplingState, PlatformSupport, TopologyCapabilities, UserspaceProfilingCapability};
-
 pub(crate) mod data_usage {
     use std::sync::Arc;
 
@@ -430,7 +421,8 @@ pub(crate) mod data_usage {
 }
 
 pub(crate) mod access {
-    pub(crate) use super::{ReqInfo, RequestContext, authorize_request, spawn_traced};
+    pub(crate) use crate::storage::access::{ReqInfo, authorize_request};
+    pub(crate) use crate::storage::request_context::{RequestContext, spawn_traced};
 }
 
 pub(crate) mod bucket {
@@ -457,13 +449,15 @@ pub(crate) mod cluster {
         ClusterMembershipSnapshot, ClusterNodeMembership, ClusterPeerHealth, ClusterPeerHealthSnapshot, ClusterPoolState,
         ClusterPoolStateSnapshot,
     };
-    pub(crate) use super::{
+    pub(crate) use super::storage_contracts::{
         CapabilitySnapshotError, CapabilityState, CapabilityStatus, ObservabilitySnapshot, ObservabilitySnapshotProvider,
         TopologySnapshot, TopologySnapshotProvider,
     };
 
     #[cfg(test)]
-    pub(crate) use super::{MemorySamplingState, PlatformSupport, TopologyCapabilities, UserspaceProfilingCapability};
+    pub(crate) use super::storage_contracts::{
+        MemorySamplingState, PlatformSupport, TopologyCapabilities, UserspaceProfilingCapability,
+    };
 }
 
 pub(crate) mod config {
@@ -475,7 +469,7 @@ pub(crate) mod config {
 }
 
 pub(crate) mod contract {
-    pub(crate) use super::{
+    pub(crate) use super::storage_contracts::{
         BucketOperations, BucketOptions, DeleteBucketOptions, HealOperations, ListOperations, MakeBucketOptions, ObjectIO,
         ObjectOperations, SRBucketDeleteOp, StorageAdminApi,
     };
@@ -490,7 +484,7 @@ pub(crate) mod metrics {
 }
 
 pub(crate) mod object {
-    pub(crate) use super::StorageObjectOptions;
+    pub(crate) use crate::storage::StorageObjectOptions;
 }
 
 pub(crate) mod rebalance {
diff --git a/rustfs/src/app/storage_api.rs b/rustfs/src/app/storage_api.rs
index 70bd3511b..483974d61 100644
--- a/rustfs/src/app/storage_api.rs
+++ b/rustfs/src/app/storage_api.rs
@@ -14,15 +14,11 @@
 
 //! App-local boundary for storage-layer helper APIs used by S3 use cases.
 
-pub(crate) use crate::storage::ECStore;
-#[cfg(test)]
-pub(crate) use crate::storage::{Endpoint, Endpoints, PoolEndpoints};
-pub(crate) use rustfs_storage_api::{ObjectToDelete, TransitionedObject};
-pub(crate) type EndpointServerPools = crate::storage::EndpointServerPools;
+use rustfs_storage_api as storage_contracts;
 
 #[cfg(test)]
 #[allow(non_snake_case)]
-pub(crate) fn EndpointServerPools(pools: Vec<PoolEndpoints>) -> EndpointServerPools {
+pub(crate) fn EndpointServerPools(pools: Vec<crate::storage::PoolEndpoints>) -> crate::storage::EndpointServerPools {
     crate::storage::EndpointServerPools::from(pools)
 }
 
@@ -54,7 +50,7 @@ pub(crate) mod data_usage {
     }
 
     pub(crate) async fn load_data_usage_from_backend(
-        store: Arc<super::ECStore>,
+        store: Arc<crate::storage::ECStore>,
     ) -> Result<rustfs_data_usage::DataUsageInfo, crate::storage::StorageError> {
         crate::storage::ecstore_data_usage::load_data_usage_from_backend(store).await
     }
@@ -69,7 +65,7 @@ pub(crate) mod data_usage {
     }
 
     pub(crate) async fn remove_bucket_usage_from_backend(
-        store: Arc<super::ECStore>,
+        store: Arc<crate::storage::ECStore>,
         bucket: &str,
     ) -> Result<(), crate::storage::StorageError> {
         crate::storage::ecstore_data_usage::remove_bucket_usage_from_backend(store, bucket).await
@@ -103,7 +99,7 @@ pub(crate) mod runtime {
         crate::storage::ecstore_config::set_global_storage_class(cfg);
     }
 
-    pub(crate) fn get_global_endpoints_opt() -> Option<super::EndpointServerPools> {
+    pub(crate) fn get_global_endpoints_opt() -> Option<crate::storage::EndpointServerPools> {
         crate::storage::get_global_endpoints_opt()
     }
 
@@ -135,7 +131,7 @@ pub(crate) mod runtime {
         crate::storage::get_global_expiry_state()
     }
 
-    pub(crate) fn new_object_layer_fn() -> Option<Arc<super::ECStore>> {
+    pub(crate) fn new_object_layer_fn() -> Option<Arc<crate::storage::ECStore>> {
         crate::storage::new_object_layer_fn()
     }
 
@@ -172,7 +168,9 @@ pub(crate) mod runtime {
     }
 
     #[cfg(test)]
-    pub(crate) async fn init_local_disks(endpoint_pools: super::EndpointServerPools) -> Result<(), crate::storage::StorageError> {
+    pub(crate) async fn init_local_disks(
+        endpoint_pools: crate::storage::EndpointServerPools,
+    ) -> Result<(), crate::storage::StorageError> {
         crate::storage::init_local_disks(endpoint_pools).await
     }
 }
@@ -348,7 +346,7 @@ pub(crate) mod bucket {
                 version_id: Option<uuid::Uuid>,
                 versioned: bool,
                 suspended: bool,
-                transitioned: &crate::app::storage_api::TransitionedObject,
+                transitioned: &super::super::super::storage_contracts::TransitionedObject,
             ) -> Option<Jentry> {
                 crate::storage::ecstore_bucket::lifecycle::tier_sweeper::transitioned_delete_journal_entry(
                     version_id,
@@ -359,7 +357,7 @@ pub(crate) mod bucket {
             }
 
             pub(crate) fn transitioned_force_delete_journal_entry(
-                transitioned: &crate::app::storage_api::TransitionedObject,
+                transitioned: &super::super::super::storage_contracts::TransitionedObject,
             ) -> Option<Jentry> {
                 crate::storage::ecstore_bucket::lifecycle::tier_sweeper::transitioned_force_delete_journal_entry(transitioned)
             }
@@ -544,7 +542,7 @@ pub(crate) mod bucket {
 
         pub(crate) async fn check_replicate_delete(
             bucket: &str,
-            dobj: &crate::app::storage_api::ObjectToDelete,
+            dobj: &super::super::storage_contracts::ObjectToDelete,
             oi: &crate::storage::StorageObjectInfo,
             del_opts: &crate::storage::StorageObjectOptions,
             gerr: Option<String>,
@@ -721,83 +719,78 @@ pub(crate) mod s3_api {
     }
 }
 
-pub(crate) use crate::storage::{
-    RFC1123, StorageDeletedObject, StorageObjectInfo, StorageObjectOptions, StorageObjectToDelete, StoragePutObjReader,
-    check_preconditions, get_validated_store, has_replication_rules, parse_object_lock_legal_hold, parse_object_lock_retention,
-    parse_part_number_i32_to_usize, process_lambda_configurations, process_queue_configurations, process_topic_configurations,
-    remove_object_lock_metadata_for_copy, strip_managed_encryption_metadata, validate_bucket_object_lock_enabled,
-    validate_list_object_unordered_with_delimiter, validate_object_key, validate_sse_headers_for_read,
-    validate_sse_headers_for_write, validate_ssec_for_read, wrap_response_with_cors,
-};
-pub(crate) use rustfs_storage_api::{
-    BucketOperations, BucketOptions, CompletePart, DeleteBucketOptions, HTTPRangeSpec, ListObjectVersionsInfo, ListObjectsV2Info,
-    ListOperations, MakeBucketOptions, MultipartOperations, MultipartUploadResult, NamespaceLocking, ObjectIO, ObjectOperations,
-    StorageAdminApi,
-};
-#[cfg(test)]
-pub(crate) use rustfs_storage_api::{HTTPPreconditions, HealOperations};
-
 pub(crate) mod admin_usecase {
-    pub(crate) use super::{ECStore, EndpointServerPools, StorageAdminApi};
+    pub(crate) use super::storage_contracts::StorageAdminApi;
     pub(crate) use super::{admin, capacity, data_usage};
+    pub(crate) use crate::storage::{ECStore, EndpointServerPools};
 }
 
 pub(crate) mod bucket_usecase {
-    pub(crate) use super::{
-        BucketOperations, BucketOptions, DeleteBucketOptions, ECStore, ListObjectVersionsInfo, ListObjectsV2Info, ListOperations,
-        MakeBucketOptions, StorageObjectInfo, get_validated_store, process_lambda_configurations, process_queue_configurations,
-        process_topic_configurations, validate_list_object_unordered_with_delimiter,
+    pub(crate) use super::storage_contracts::{
+        BucketOperations, BucketOptions, DeleteBucketOptions, ListObjectVersionsInfo, ListObjectsV2Info, ListOperations,
+        MakeBucketOptions,
     };
     pub(crate) use super::{access, bucket, data_usage, error, helper, object_utils, request_context, s3_api};
+    pub(crate) use crate::storage::{
+        ECStore, StorageObjectInfo, get_validated_store, process_lambda_configurations, process_queue_configurations,
+        process_topic_configurations, validate_list_object_unordered_with_delimiter,
+    };
 }
 
 pub(crate) mod object_usecase {
     #[cfg(test)]
-    pub(crate) use super::HTTPPreconditions;
+    pub(crate) use super::storage_contracts::HTTPPreconditions;
+    pub(crate) use super::storage_contracts::{HTTPRangeSpec, NamespaceLocking, ObjectIO, ObjectOperations};
     pub(crate) use super::{
-        ECStore, HTTPRangeSpec, NamespaceLocking, ObjectIO, ObjectOperations, RFC1123, StorageDeletedObject, StorageObjectInfo,
-        StorageObjectOptions, StorageObjectToDelete, StoragePutObjReader, bucket, check_preconditions, get_validated_store,
-        has_replication_rules, parse_object_lock_legal_hold, parse_object_lock_retention, parse_part_number_i32_to_usize,
-        remove_object_lock_metadata_for_copy, strip_managed_encryption_metadata, validate_bucket_object_lock_enabled,
-        validate_object_key, validate_sse_headers_for_read, validate_sse_headers_for_write, validate_ssec_for_read,
-        wrap_response_with_cors,
+        access, bucket, compression, concurrency, data_usage, deadlock_detector, ecfs, error, head_prefix, helper, io,
+        object_utils, options, request_context, s3_api, set_disk, sse, storage_class, timeout_wrapper,
     };
-    pub(crate) use super::{
-        access, compression, concurrency, data_usage, deadlock_detector, ecfs, error, head_prefix, helper, io, object_utils,
-        options, request_context, s3_api, set_disk, sse, storage_class, timeout_wrapper,
+    pub(crate) use crate::storage::{
+        ECStore, RFC1123, StorageDeletedObject, StorageObjectInfo, StorageObjectOptions, StorageObjectToDelete,
+        StoragePutObjReader, check_preconditions, get_validated_store, has_replication_rules, parse_object_lock_legal_hold,
+        parse_object_lock_retention, parse_part_number_i32_to_usize, remove_object_lock_metadata_for_copy,
+        strip_managed_encryption_metadata, validate_bucket_object_lock_enabled, validate_object_key,
+        validate_sse_headers_for_read, validate_sse_headers_for_write, validate_ssec_for_read, wrap_response_with_cors,
     };
 }
 
 pub(crate) mod multipart_usecase {
     #[cfg(test)]
-    pub(crate) use super::HTTPPreconditions;
-    pub(crate) use super::{
-        CompletePart, ECStore, HTTPRangeSpec, MultipartOperations, MultipartUploadResult, ObjectIO, ObjectOperations,
-        StorageObjectOptions, StoragePutObjReader, access, bucket, compression, data_usage, error, helper, io, object_utils,
-        options, s3_api, set_disk, sse,
+    pub(crate) use super::storage_contracts::HTTPPreconditions;
+    pub(crate) use super::storage_contracts::{
+        CompletePart, HTTPRangeSpec, MultipartOperations, MultipartUploadResult, ObjectIO, ObjectOperations,
     };
+    pub(crate) use super::{
+        access, bucket, compression, data_usage, error, helper, io, object_utils, options, s3_api, set_disk, sse,
+    };
+    pub(crate) use crate::storage::{ECStore, StorageObjectOptions, StoragePutObjReader};
 }
 
 pub(crate) mod select_object {
-    pub(crate) use super::ObjectOperations;
-    pub(crate) use super::get_validated_store;
+    pub(crate) use super::storage_contracts::ObjectOperations;
     pub(crate) use super::{options, request_context};
-    pub(crate) use super::{validate_sse_headers_for_read, validate_ssec_for_read};
+    pub(crate) use crate::storage::{get_validated_store, validate_sse_headers_for_read, validate_ssec_for_read};
 }
 
 pub(crate) mod context {
-    pub(crate) use super::bucket;
-    pub(crate) use super::{ECStore, EndpointServerPools, runtime};
     #[cfg(test)]
-    pub(crate) use super::{Endpoint, Endpoints, PoolEndpoints};
+    pub(crate) use super::EndpointServerPools;
+    pub(crate) use super::bucket;
+    pub(crate) use super::runtime;
+    pub(crate) use crate::storage::{ECStore, EndpointServerPools};
+    #[cfg(test)]
+    pub(crate) use crate::storage::{Endpoint, Endpoints, PoolEndpoints};
 }
 
 #[cfg(test)]
 pub(crate) mod test {
-    pub(crate) use super::{
-        BucketOperations, BucketOptions, ECStore, Endpoint, EndpointServerPools, Endpoints, HealOperations, ListOperations,
-        MakeBucketOptions, MultipartOperations, ObjectIO, ObjectOperations, PoolEndpoints, StorageObjectInfo,
-        StorageObjectOptions, StoragePutObjReader,
+    pub(crate) use super::EndpointServerPools;
+    pub(crate) use super::storage_contracts::{
+        BucketOperations, BucketOptions, HealOperations, ListOperations, MakeBucketOptions, MultipartOperations, ObjectIO,
+        ObjectOperations,
     };
     pub(crate) use super::{bucket, ecfs, object_utils, runtime};
+    pub(crate) use crate::storage::{
+        ECStore, Endpoint, Endpoints, PoolEndpoints, StorageObjectInfo, StorageObjectOptions, StoragePutObjReader,
+    };
 }
diff --git a/rustfs/src/storage/access.rs b/rustfs/src/storage/access.rs
index 638ae701d..3cf37e484 100644
--- a/rustfs/src/storage/access.rs
+++ b/rustfs/src/storage/access.rs
@@ -12,7 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use super::BucketOperations;
 use super::ECStore;
 use super::ecfs::FS;
 use super::resolve_object_store_handle;
@@ -23,6 +22,7 @@ use crate::auth::{check_key_valid, get_condition_values_with_query_and_client_in
 use crate::error::ApiError;
 use crate::license::license_check;
 use crate::server::RemoteAddr;
+use crate::storage::contract::BucketOperations;
 use crate::storage::request_context::RequestContext;
 use crate::storage::runtime_sources;
 use metrics::counter;
diff --git a/rustfs/src/storage/ecfs.rs b/rustfs/src/storage/ecfs.rs
index d9356f389..e55b07a07 100644
--- a/rustfs/src/storage/ecfs.rs
+++ b/rustfs/src/storage/ecfs.rs
@@ -14,9 +14,8 @@
 
 use super::{
     BUCKET_ACCELERATE_CONFIG, BUCKET_LOGGING_CONFIG, BUCKET_REQUEST_PAYMENT_CONFIG, BUCKET_VERSIONING_CONFIG,
-    BUCKET_WEBSITE_CONFIG, BucketOperations, BucketOptions, BucketVersioningSys, OBJECT_LOCK_CONFIG, ObjectLockRetentionOptions,
-    ObjectOperations as _, StorageError, check_retention_for_modification, decode_tags, decode_tags_to_map,
-    delete_bucket_metadata_config, encode_tags, get_bucket_accelerate_config, get_bucket_logging_config,
+    BUCKET_WEBSITE_CONFIG, BucketVersioningSys, OBJECT_LOCK_CONFIG, StorageError, check_retention_for_modification, decode_tags,
+    decode_tags_to_map, delete_bucket_metadata_config, encode_tags, get_bucket_accelerate_config, get_bucket_logging_config,
     get_bucket_object_lock_config, get_bucket_replication_config, get_bucket_request_payment_config, get_bucket_website_config,
     is_err_bucket_not_found, is_err_object_not_found, is_err_version_not_found, record_replication_proxy, serialize,
     update_bucket_metadata_config,
@@ -24,6 +23,7 @@ use super::{
 use super::{StorageReplicationConfigExt as _, StorageVersioningConfigExt as _};
 use crate::error::ApiError;
 use crate::storage::access::has_bypass_governance_header;
+use crate::storage::contract::{BucketOperations, BucketOptions, ObjectLockRetentionOptions, ObjectOperations as _};
 use crate::storage::helper::OperationHelper;
 use crate::storage::options::get_opts;
 use crate::storage::runtime_sources;
diff --git a/rustfs/src/storage/ecfs_extend.rs b/rustfs/src/storage/ecfs_extend.rs
index 9a60d70a6..c1c653449 100644
--- a/rustfs/src/storage/ecfs_extend.rs
+++ b/rustfs/src/storage/ecfs_extend.rs
@@ -14,12 +14,13 @@
 
 use super::StorageReplicationConfigExt as _;
 use super::{
-    BucketOperations, BucketOptions, StorageError, add_object_lock_years, get_bucket_cors_config, get_bucket_object_lock_config,
-    get_bucket_replication_config, resolve_object_store_handle,
+    StorageError, add_object_lock_years, get_bucket_cors_config, get_bucket_object_lock_config, get_bucket_replication_config,
+    resolve_object_store_handle,
 };
 use crate::config::{RustFSBufferConfig, WorkloadProfile, is_buffer_profile_enabled};
 use crate::error::ApiError;
 use crate::server::cors;
+use crate::storage::contract::{BucketOperations, BucketOptions, ObjectToDelete};
 use crate::storage::ecfs::ListObjectUnorderedQuery;
 use http::header::{IF_MATCH, IF_MODIFIED_SINCE, IF_NONE_MATCH, IF_UNMODIFIED_SINCE};
 use http::{HeaderMap, HeaderValue, StatusCode};
@@ -45,8 +46,8 @@ use time::format_description::well_known::Rfc3339;
 use time::{format_description::FormatItem, macros::format_description};
 use tracing::{debug, warn};
 
+use crate::storage::StorageObjectInfo as ObjectInfo;
 use crate::storage::runtime_sources;
-use crate::storage::{StorageObjectInfo as ObjectInfo, StorageObjectToDelete as ObjectToDelete};
 
 const LOG_COMPONENT_STORAGE: &str = "storage";
 const LOG_SUBSYSTEM_OBJECT_LOCK: &str = "object_lock";
diff --git a/rustfs/src/storage/head_prefix.rs b/rustfs/src/storage/head_prefix.rs
index 46b602b53..4aab1ba58 100644
--- a/rustfs/src/storage/head_prefix.rs
+++ b/rustfs/src/storage/head_prefix.rs
@@ -13,7 +13,7 @@
 // limitations under the License.
 
 use super::ECStore;
-use super::ListOperations as _;
+use crate::storage::contract::ListOperations as _;
 use std::sync::Arc;
 
 /// Determines if the key "looks like a prefix" (ends with `/`).
diff --git a/rustfs/src/storage/options.rs b/rustfs/src/storage/options.rs
index d76479a53..fc0acb0bd 100644
--- a/rustfs/src/storage/options.rs
+++ b/rustfs/src/storage/options.rs
@@ -12,7 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use super::{BucketVersioningSys, HTTPPreconditions, HTTPRangeSpec, Result, StorageError};
+use super::{BucketVersioningSys, Result, StorageError};
+use crate::storage::contract::{HTTPPreconditions, HTTPRangeSpec};
 use http::header::{IF_MATCH, IF_NONE_MATCH};
 use http::{HeaderMap, HeaderValue};
 use rustfs_utils::http::{
diff --git a/rustfs/src/storage/rpc/node_service.rs b/rustfs/src/storage/rpc/node_service.rs
index cf4e62e6a..5b7a47be6 100644
--- a/rustfs/src/storage/rpc/node_service.rs
+++ b/rustfs/src/storage/rpc/node_service.rs
@@ -13,17 +13,17 @@
 // limitations under the License.
 
 use super::super::{
-    BucketOptions, CollectMetricsOpts, DeleteBucketOptions, DeleteOptions, DiskError, DiskInfoOptions, DiskStore, ECStore, Error,
-    FileInfoVersions, LocalPeerS3Client, MakeBucketOptions, MetricType, PEER_RESTSIGNAL, PEER_RESTSUB_SYS, ReadMultipleReq,
-    ReadMultipleResp, ReadOptions, SERVICE_SIGNAL_REFRESH_CONFIG, SERVICE_SIGNAL_RELOAD_DYNAMIC, StorageAdminApi,
-    StorageDiskRpcExt as _, StoragePeerS3ClientExt as _, UpdateMetadataOpts, all_local_disk_path, collect_local_metrics,
-    find_local_disk_by_ref, get_local_server_property, load_bucket_metadata, reload_transition_tier_config,
-    resolve_object_store_handle, set_bucket_metadata,
+    CollectMetricsOpts, DeleteOptions, DiskError, DiskInfoOptions, DiskStore, ECStore, Error, FileInfoVersions,
+    LocalPeerS3Client, MetricType, PEER_RESTSIGNAL, PEER_RESTSUB_SYS, ReadMultipleReq, ReadMultipleResp, ReadOptions,
+    SERVICE_SIGNAL_REFRESH_CONFIG, SERVICE_SIGNAL_RELOAD_DYNAMIC, StorageDiskRpcExt as _, StoragePeerS3ClientExt as _,
+    UpdateMetadataOpts, all_local_disk_path, collect_local_metrics, find_local_disk_by_ref, get_local_server_property,
+    load_bucket_metadata, reload_transition_tier_config, resolve_object_store_handle, set_bucket_metadata,
 };
 use crate::admin::service::{
     config::{reload_dynamic_config_runtime_state, reload_runtime_config_snapshot},
     site_replication::reload_site_replication_runtime_state,
 };
+use crate::storage::contract::{BucketOptions, DeleteBucketOptions, MakeBucketOptions, StorageAdminApi};
 use crate::storage::runtime_sources;
 use bytes::Bytes;
 use futures::Stream;
diff --git a/rustfs/src/storage/s3_api/bucket.rs b/rustfs/src/storage/s3_api/bucket.rs
index eb75d30cd..1ffae1f65 100644
--- a/rustfs/src/storage/s3_api/bucket.rs
+++ b/rustfs/src/storage/s3_api/bucket.rs
@@ -12,11 +12,11 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use crate::storage::s3_api::common::rustfs_owner;
-use crate::storage::to_s3s_etag;
-use crate::storage::{
+use crate::storage::contract::{
     BucketInfo, ListObjectVersionsInfo as StorageListObjectVersionsInfo, ListObjectsV2Info as StorageListObjectsV2Info,
 };
+use crate::storage::s3_api::common::rustfs_owner;
+use crate::storage::to_s3s_etag;
 use percent_encoding::percent_decode_str;
 use s3s::dto::{
     Bucket, CommonPrefix, DeleteMarkerEntry, EncodingType, ListBucketsOutput, ListObjectVersionsOutput, ListObjectsOutput,
@@ -394,8 +394,8 @@ mod tests {
         build_list_object_versions_output, build_list_objects_output, build_list_objects_v2_output,
         parse_list_object_versions_params, parse_list_objects_v2_params,
     };
-    use crate::storage::BucketInfo;
     use crate::storage::StorageObjectInfo as ObjectInfo;
+    use crate::storage::contract::BucketInfo;
     use crate::storage::s3_api::common::rustfs_owner;
     use s3s::S3ErrorCode;
     use s3s::dto::{CommonPrefix, EncodingType, ListObjectsV2Output, Object};
diff --git a/rustfs/src/storage/s3_api/multipart.rs b/rustfs/src/storage/s3_api/multipart.rs
index ad5637cd2..0db320294 100644
--- a/rustfs/src/storage/s3_api/multipart.rs
+++ b/rustfs/src/storage/s3_api/multipart.rs
@@ -12,9 +12,9 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+use crate::storage::contract::{ListMultipartsInfo, ListPartsInfo};
 use crate::storage::s3_api::common::{rustfs_initiator, rustfs_owner};
 use crate::storage::to_s3s_etag;
-use crate::storage::{ListMultipartsInfo, ListPartsInfo};
 use s3s::dto::{CommonPrefix, ListMultipartUploadsOutput, ListPartsOutput, MultipartUpload, Part, Timestamp};
 use s3s::{S3Error, S3ErrorCode};
 
@@ -195,9 +195,9 @@ mod tests {
         MAX_MULTIPART_UPLOADS_LIST, build_list_multipart_uploads_output, build_list_parts_output,
         parse_list_multipart_uploads_params, parse_list_parts_params, parse_upload_part_number,
     };
+    use crate::storage::contract::{ListMultipartsInfo, ListPartsInfo, MultipartInfo, PartInfo};
     use crate::storage::s3_api::common::{rustfs_initiator, rustfs_owner};
     use crate::storage::to_s3s_etag;
-    use crate::storage::{ListMultipartsInfo, ListPartsInfo, MultipartInfo, PartInfo};
     use s3s::S3ErrorCode;
     use s3s::dto::Timestamp;
     use time::OffsetDateTime;
diff --git a/rustfs/src/storage/storage_api.rs b/rustfs/src/storage/storage_api.rs
index 7309052f8..70b547057 100644
--- a/rustfs/src/storage/storage_api.rs
+++ b/rustfs/src/storage/storage_api.rs
@@ -16,20 +16,23 @@
 
 use std::sync::Arc;
 
-pub(crate) use rustfs_storage_api::{
-    BucketInfo, BucketOperations, BucketOptions, DeleteBucketOptions, DeletedObject, DiskCapabilities, HTTPPreconditions,
-    HTTPRangeSpec, ListMultipartsInfo, ListObjectVersionsInfo, ListObjectsV2Info, ListOperations, ListPartsInfo,
-    MakeBucketOptions, ObjectIO, ObjectLockRetentionOptions, ObjectOperations, ObjectToDelete, StorageAdminApi,
-    TopologyCapabilities, TopologySnapshot,
-};
-#[cfg(test)]
-pub(crate) use rustfs_storage_api::{MultipartInfo, PartInfo};
+use rustfs_storage_api as storage_contracts;
 
-pub(crate) type StorageDeletedObject = DeletedObject;
+pub(crate) mod contract {
+    pub(crate) use rustfs_storage_api::{
+        BucketInfo, BucketOperations, BucketOptions, DeleteBucketOptions, HTTPPreconditions, HTTPRangeSpec, ListMultipartsInfo,
+        ListObjectVersionsInfo, ListObjectsV2Info, ListOperations, ListPartsInfo, MakeBucketOptions, ObjectLockRetentionOptions,
+        ObjectOperations, ObjectToDelete, StorageAdminApi,
+    };
+    #[cfg(test)]
+    pub(crate) use rustfs_storage_api::{MultipartInfo, PartInfo};
+}
+
+pub(crate) type StorageDeletedObject = storage_contracts::DeletedObject;
 pub(crate) type StorageGetObjectReader = super::GetObjectReader;
 pub(crate) type StorageObjectInfo = super::ObjectInfo;
 pub(crate) type StorageObjectOptions = super::ObjectOptions;
-pub(crate) type StorageObjectToDelete = ObjectToDelete;
+pub(crate) type StorageObjectToDelete = storage_contracts::ObjectToDelete;
 pub(crate) type StoragePutObjReader = super::PutObjReader;
 
 pub(crate) mod ecstore_admin {
@@ -624,10 +627,14 @@ pub(crate) trait StoragePeerS3ClientExt {
         bucket: &str,
         opts: &rustfs_common::heal_channel::HealOpts,
     ) -> DiskResult<rustfs_madmin::heal_commands::HealResultItem>;
-    async fn make_bucket(&self, bucket: &str, opts: &MakeBucketOptions) -> DiskResult<()>;
-    async fn list_bucket(&self, opts: &BucketOptions) -> DiskResult<Vec<BucketInfo>>;
-    async fn delete_bucket(&self, bucket: &str, opts: &DeleteBucketOptions) -> DiskResult<()>;
-    async fn get_bucket_info(&self, bucket: &str, opts: &BucketOptions) -> DiskResult<BucketInfo>;
+    async fn make_bucket(&self, bucket: &str, opts: &storage_contracts::MakeBucketOptions) -> DiskResult<()>;
+    async fn list_bucket(&self, opts: &storage_contracts::BucketOptions) -> DiskResult<Vec<storage_contracts::BucketInfo>>;
+    async fn delete_bucket(&self, bucket: &str, opts: &storage_contracts::DeleteBucketOptions) -> DiskResult<()>;
+    async fn get_bucket_info(
+        &self,
+        bucket: &str,
+        opts: &storage_contracts::BucketOptions,
+    ) -> DiskResult<storage_contracts::BucketInfo>;
 }
 
 impl StoragePeerS3ClientExt for LocalPeerS3Client {
@@ -639,19 +646,23 @@ impl StoragePeerS3ClientExt for LocalPeerS3Client {
         ecstore_rpc::PeerS3Client::heal_bucket(self, bucket, opts).await
     }
 
-    async fn make_bucket(&self, bucket: &str, opts: &MakeBucketOptions) -> DiskResult<()> {
+    async fn make_bucket(&self, bucket: &str, opts: &storage_contracts::MakeBucketOptions) -> DiskResult<()> {
         ecstore_rpc::PeerS3Client::make_bucket(self, bucket, opts).await
     }
 
-    async fn list_bucket(&self, opts: &BucketOptions) -> DiskResult<Vec<BucketInfo>> {
+    async fn list_bucket(&self, opts: &storage_contracts::BucketOptions) -> DiskResult<Vec<storage_contracts::BucketInfo>> {
         ecstore_rpc::PeerS3Client::list_bucket(self, opts).await
     }
 
-    async fn delete_bucket(&self, bucket: &str, opts: &DeleteBucketOptions) -> DiskResult<()> {
+    async fn delete_bucket(&self, bucket: &str, opts: &storage_contracts::DeleteBucketOptions) -> DiskResult<()> {
         ecstore_rpc::PeerS3Client::delete_bucket(self, bucket, opts).await
     }
 
-    async fn get_bucket_info(&self, bucket: &str, opts: &BucketOptions) -> DiskResult<BucketInfo> {
+    async fn get_bucket_info(
+        &self,
+        bucket: &str,
+        opts: &storage_contracts::BucketOptions,
+    ) -> DiskResult<storage_contracts::BucketInfo> {
         ecstore_rpc::PeerS3Client::get_bucket_info(self, bucket, opts).await
     }
 }
@@ -906,9 +917,9 @@ where
 
 pub(crate) fn topology_snapshot_from_endpoint_pools_with_capabilities(
     endpoint_pools: &EndpointServerPools,
-    capabilities: TopologyCapabilities,
-    disk_capabilities: DiskCapabilities,
-) -> TopologySnapshot {
+    capabilities: storage_contracts::TopologyCapabilities,
+    disk_capabilities: storage_contracts::DiskCapabilities,
+) -> storage_contracts::TopologySnapshot {
     ecstore_cluster::topology_snapshot_from_endpoint_pools_with_capabilities(endpoint_pools, capabilities, disk_capabilities)
 }
 
@@ -946,7 +957,7 @@ impl StorageVersioningConfigExt for s3s::dto::VersioningConfiguration {
     }
 }
 
-pub(crate) type GetObjectReader = <ECStore as ObjectIO>::GetObjectReader;
-pub(crate) type ObjectInfo = <ECStore as ObjectOperations>::ObjectInfo;
-pub(crate) type ObjectOptions = <ECStore as ObjectOperations>::ObjectOptions;
-pub(crate) type PutObjReader = <ECStore as ObjectIO>::PutObjectReader;
+pub(crate) type GetObjectReader = <ECStore as storage_contracts::ObjectIO>::GetObjectReader;
+pub(crate) type ObjectInfo = <ECStore as storage_contracts::ObjectOperations>::ObjectInfo;
+pub(crate) type ObjectOptions = <ECStore as storage_contracts::ObjectOperations>::ObjectOptions;
+pub(crate) type PutObjReader = <ECStore as storage_contracts::ObjectIO>::PutObjectReader;
diff --git a/scripts/check_architecture_migration_rules.sh b/scripts/check_architecture_migration_rules.sh
index dea227fa9..6a1d05724 100755
--- a/scripts/check_architecture_migration_rules.sh
+++ b/scripts/check_architecture_migration_rules.sh
@@ -120,6 +120,8 @@ EXTERNAL_RUNTIME_ECSTORE_COMPAT_BYPASS_HITS_FILE="${TMP_DIR}/external_runtime_ec
 EXTERNAL_RUNTIME_STORAGE_API_BYPASS_HITS_FILE="${TMP_DIR}/external_runtime_storage_api_bypass_hits.txt"
 EXTERNAL_STORAGE_API_DOMAIN_BYPASS_HITS_FILE="${TMP_DIR}/external_storage_api_domain_bypass_hits.txt"
 EXTERNAL_STORAGE_API_ROOT_REEXPORT_HITS_FILE="${TMP_DIR}/external_storage_api_root_reexport_hits.txt"
+RUSTFS_STORAGE_API_ROOT_REEXPORT_HITS_FILE="${TMP_DIR}/rustfs_storage_api_root_reexport_hits.txt"
+RUSTFS_APP_ADMIN_STORAGE_HELPER_ROOT_REEXPORT_HITS_FILE="${TMP_DIR}/rustfs_app_admin_storage_helper_root_reexport_hits.txt"
 EXTERNAL_TEST_ECSTORE_COMPAT_BYPASS_HITS_FILE="${TMP_DIR}/external_test_ecstore_compat_bypass_hits.txt"
 FUZZ_ECSTORE_COMPAT_BYPASS_HITS_FILE="${TMP_DIR}/fuzz_ecstore_compat_bypass_hits.txt"
 ALL_STORAGE_COMPAT_SELF_FACADE_PATH_HITS_FILE="${TMP_DIR}/all_storage_compat_self_facade_path_hits.txt"
@@ -1464,6 +1466,30 @@ if [[ -s "$EXTERNAL_STORAGE_API_ROOT_REEXPORT_HITS_FILE" ]]; then
   report_failure "external local storage_api boundaries must expose storage-api contracts from consumer-domain modules, not root re-exports: $(paste -sd '; ' "$EXTERNAL_STORAGE_API_ROOT_REEXPORT_HITS_FILE")"
 fi
 
+(
+  cd "$ROOT_DIR"
+  rg -n --with-filename '^pub(?:\(crate\))? use rustfs_storage_api' \
+    rustfs/src/storage_api.rs \
+    rustfs/src/storage/storage_api.rs \
+    rustfs/src/admin/storage_api.rs \
+    rustfs/src/app/storage_api.rs || true
+) >"$RUSTFS_STORAGE_API_ROOT_REEXPORT_HITS_FILE"
+
+if [[ -s "$RUSTFS_STORAGE_API_ROOT_REEXPORT_HITS_FILE" ]]; then
+  report_failure "RustFS local storage_api boundaries must expose storage-api contracts from domain modules, not root re-exports: $(paste -sd '; ' "$RUSTFS_STORAGE_API_ROOT_REEXPORT_HITS_FILE")"
+fi
+
+(
+  cd "$ROOT_DIR"
+  rg -n --with-filename '^pub(?:\(crate\))? use crate::storage::' \
+    rustfs/src/admin/storage_api.rs \
+    rustfs/src/app/storage_api.rs || true
+) >"$RUSTFS_APP_ADMIN_STORAGE_HELPER_ROOT_REEXPORT_HITS_FILE"
+
+if [[ -s "$RUSTFS_APP_ADMIN_STORAGE_HELPER_ROOT_REEXPORT_HITS_FILE" ]]; then
+  report_failure "RustFS app/admin storage_api boundaries must expose storage helpers from domain modules, not root re-exports: $(paste -sd '; ' "$RUSTFS_APP_ADMIN_STORAGE_HELPER_ROOT_REEXPORT_HITS_FILE")"
+fi
+
 (
   cd "$ROOT_DIR"
   rg -n --with-filename 'get_global_(?:action_cred|server_config|notification_sys)' \