diff --git a/dsp_permissions_scripts/ap/ap_get.py b/dsp_permissions_scripts/ap/ap_get.py
index 80e9e19f..6c5ac18c 100644
--- a/dsp_permissions_scripts/ap/ap_get.py
+++ b/dsp_permissions_scripts/ap/ap_get.py
@@ -1,11 +1,14 @@
 from typing import Any
 from urllib.parse import quote_plus
 
-from dsp_permissions_scripts.ap.ap_model import Ap, ApValue
+from dsp_permissions_scripts.ap.ap_model import Ap
+from dsp_permissions_scripts.ap.ap_model import ApValue
 from dsp_permissions_scripts.models.errors import ApiError
 from dsp_permissions_scripts.utils.dsp_client import DspClient
 from dsp_permissions_scripts.utils.get_logger import get_logger
-from dsp_permissions_scripts.utils.project import get_project_iri_by_shortcode
+from dsp_permissions_scripts.utils.project import (
+    get_project_iri_and_onto_iris_by_shortcode,
+)
 
 logger = get_logger(__name__)
 
@@ -50,7 +53,7 @@ def _get_all_aps_of_project(project_iri: str, dsp_client: DspClient) -> list[Ap]
 def get_aps_of_project(shortcode: str, dsp_client: DspClient) -> list[Ap]:
     """Returns the Administrative Permissions for a project."""
     logger.info("****** Retrieving all Administrative Permissions... ******")
-    project_iri = get_project_iri_by_shortcode(shortcode, dsp_client)
+    project_iri, _ = get_project_iri_and_onto_iris_by_shortcode(shortcode, dsp_client)
     aps = _get_all_aps_of_project(project_iri, dsp_client)
     logger.info(f"Retrieved {len(aps)} Administrative Permissions")
     return aps
diff --git a/dsp_permissions_scripts/ap/ap_serialize.py b/dsp_permissions_scripts/ap/ap_serialize.py
index 8dfcb104..df863f28 100644
--- a/dsp_permissions_scripts/ap/ap_serialize.py
+++ b/dsp_permissions_scripts/ap/ap_serialize.py
@@ -3,7 +3,8 @@
 from typing import Literal
 
 from dsp_permissions_scripts.ap.ap_model import Ap
-from dsp_permissions_scripts.utils.get_logger import get_logger, get_timestamp
+from dsp_permissions_scripts.utils.get_logger import get_logger
+from dsp_permissions_scripts.utils.get_logger import get_timestamp
 
 logger = get_logger(__name__)
 
diff --git a/dsp_permissions_scripts/ap/ap_set.py b/dsp_permissions_scripts/ap/ap_set.py
index 2ca6ae89..ed24c9e3 100644
--- a/dsp_permissions_scripts/ap/ap_set.py
+++ b/dsp_permissions_scripts/ap/ap_set.py
@@ -1,10 +1,8 @@
 from typing import Any
 from urllib.parse import quote_plus
 
-from dsp_permissions_scripts.ap.ap_get import (
-    create_admin_route_object_from_ap,
-    create_ap_from_admin_route_object,
-)
+from dsp_permissions_scripts.ap.ap_get import create_admin_route_object_from_ap
+from dsp_permissions_scripts.ap.ap_get import create_ap_from_admin_route_object
 from dsp_permissions_scripts.ap.ap_model import Ap
 from dsp_permissions_scripts.models.errors import ApiError
 from dsp_permissions_scripts.utils.dsp_client import DspClient
diff --git a/dsp_permissions_scripts/doap/doap_get.py b/dsp_permissions_scripts/doap/doap_get.py
index 54f946d6..ae4beec4 100644
--- a/dsp_permissions_scripts/doap/doap_get.py
+++ b/dsp_permissions_scripts/doap/doap_get.py
@@ -1,11 +1,15 @@
 from typing import Any
 from urllib.parse import quote_plus
 
-from dsp_permissions_scripts.doap.doap_model import Doap, DoapTarget, DoapTargetType
+from dsp_permissions_scripts.doap.doap_model import Doap
+from dsp_permissions_scripts.doap.doap_model import DoapTarget
+from dsp_permissions_scripts.doap.doap_model import DoapTargetType
 from dsp_permissions_scripts.models.errors import ApiError
 from dsp_permissions_scripts.utils.dsp_client import DspClient
 from dsp_permissions_scripts.utils.get_logger import get_logger
-from dsp_permissions_scripts.utils.project import get_project_iri_by_shortcode
+from dsp_permissions_scripts.utils.project import (
+    get_project_iri_and_onto_iris_by_shortcode,
+)
 from dsp_permissions_scripts.utils.scope_serialization import (
     create_scope_from_admin_route_object,
 )
@@ -72,7 +76,7 @@ def get_doaps_of_project(
     By default, all DOAPs are returned, regardless of their target (target=all).
     """
     logger.info("****** Retrieving all DOAPs... ******")
-    project_iri = get_project_iri_by_shortcode(shortcode, dsp_client)
+    project_iri, _ = get_project_iri_and_onto_iris_by_shortcode(shortcode, dsp_client)
     doaps = _get_all_doaps_of_project(project_iri, dsp_client)
     filtered_doaps = _filter_doaps_by_target(
         doaps=doaps,
diff --git a/dsp_permissions_scripts/doap/doap_model.py b/dsp_permissions_scripts/doap/doap_model.py
index cb3ddc37..e69576c6 100644
--- a/dsp_permissions_scripts/doap/doap_model.py
+++ b/dsp_permissions_scripts/doap/doap_model.py
@@ -3,7 +3,8 @@
 from enum import Enum
 from typing import Self
 
-from pydantic import BaseModel, model_validator
+from pydantic import BaseModel
+from pydantic import model_validator
 
 from dsp_permissions_scripts.models.group import Group
 from dsp_permissions_scripts.models.scope import PermissionScope
diff --git a/dsp_permissions_scripts/doap/doap_serialize.py b/dsp_permissions_scripts/doap/doap_serialize.py
index 22179f23..ff09cdbd 100644
--- a/dsp_permissions_scripts/doap/doap_serialize.py
+++ b/dsp_permissions_scripts/doap/doap_serialize.py
@@ -2,8 +2,10 @@
 from pathlib import Path
 from typing import Literal
 
-from dsp_permissions_scripts.doap.doap_model import Doap, DoapTargetType
-from dsp_permissions_scripts.utils.get_logger import get_logger, get_timestamp
+from dsp_permissions_scripts.doap.doap_model import Doap
+from dsp_permissions_scripts.doap.doap_model import DoapTargetType
+from dsp_permissions_scripts.utils.get_logger import get_logger
+from dsp_permissions_scripts.utils.get_logger import get_timestamp
 
 logger = get_logger(__name__)
 
diff --git a/dsp_permissions_scripts/models/group.py b/dsp_permissions_scripts/models/group.py
index 7b28661b..f08103d0 100644
--- a/dsp_permissions_scripts/models/group.py
+++ b/dsp_permissions_scripts/models/group.py
@@ -2,7 +2,9 @@
 
 import re
 
-from pydantic import BaseModel, ConfigDict, model_validator
+from pydantic import BaseModel
+from pydantic import ConfigDict
+from pydantic import model_validator
 
 
 class Group(BaseModel):
diff --git a/dsp_permissions_scripts/models/scope.py b/dsp_permissions_scripts/models/scope.py
index 259c248d..5450ec9b 100644
--- a/dsp_permissions_scripts/models/scope.py
+++ b/dsp_permissions_scripts/models/scope.py
@@ -1,17 +1,18 @@
 from __future__ import annotations
 
-from typing import Iterable, Literal
+from typing import Iterable
+from typing import Literal
 
-from pydantic import BaseModel, ConfigDict, model_validator
+from pydantic import BaseModel
+from pydantic import ConfigDict
+from pydantic import model_validator
 
-from dsp_permissions_scripts.models.group import (
-    CREATOR,
-    KNOWN_USER,
-    PROJECT_ADMIN,
-    PROJECT_MEMBER,
-    UNKNOWN_USER,
-    Group,
-)
+from dsp_permissions_scripts.models.group import CREATOR
+from dsp_permissions_scripts.models.group import KNOWN_USER
+from dsp_permissions_scripts.models.group import PROJECT_ADMIN
+from dsp_permissions_scripts.models.group import PROJECT_MEMBER
+from dsp_permissions_scripts.models.group import UNKNOWN_USER
+from dsp_permissions_scripts.models.group import Group
 
 
 class PermissionScope(BaseModel):
diff --git a/dsp_permissions_scripts/oap/oap_get.py b/dsp_permissions_scripts/oap/oap_get.py
index bb5820f6..bb3ef616 100644
--- a/dsp_permissions_scripts/oap/oap_get.py
+++ b/dsp_permissions_scripts/oap/oap_get.py
@@ -1,13 +1,14 @@
-from typing import Any, Iterable
+from typing import Any
+from typing import Iterable
 from urllib.parse import quote_plus
 
 from dsp_permissions_scripts.models.errors import ApiError
 from dsp_permissions_scripts.oap.oap_model import Oap
 from dsp_permissions_scripts.utils.dsp_client import DspClient
 from dsp_permissions_scripts.utils.get_logger import get_logger
+from dsp_permissions_scripts.utils.project import get_all_resource_class_iris_of_project
 from dsp_permissions_scripts.utils.project import (
-    get_all_resource_class_iris_of_project,
-    get_project_iri_by_shortcode,
+    get_project_iri_and_onto_iris_by_shortcode,
 )
 from dsp_permissions_scripts.utils.scope_serialization import create_scope_from_string
 
@@ -99,9 +100,9 @@ def get_all_resource_oaps_of_project(
     excluded_class_iris: Iterable[str] = (),
 ) -> list[Oap]:
     logger.info("******* Retrieving all resource OAPs... *******")
-    project_iri = get_project_iri_by_shortcode(shortcode, dsp_client)
+    project_iri, onto_iris = get_project_iri_and_onto_iris_by_shortcode(shortcode, dsp_client)
     all_resource_oaps = []
-    resclass_iris = get_all_resource_class_iris_of_project(project_iri, dsp_client)
+    resclass_iris = get_all_resource_class_iris_of_project(onto_iris, dsp_client)
     resclass_iris = [x for x in resclass_iris if x not in excluded_class_iris]
     for resclass_iri in resclass_iris:
         resource_oaps = _get_all_resource_oaps_of_resclass(resclass_iri, project_iri, dsp_client)
diff --git a/dsp_permissions_scripts/oap/oap_set.py b/dsp_permissions_scripts/oap/oap_set.py
index 46475981..11b5be2c 100644
--- a/dsp_permissions_scripts/oap/oap_set.py
+++ b/dsp_permissions_scripts/oap/oap_set.py
@@ -1,10 +1,12 @@
 # pylint: disable=too-many-arguments
 
-from concurrent.futures import ThreadPoolExecutor, as_completed
+from concurrent.futures import ThreadPoolExecutor
+from concurrent.futures import as_completed
 from datetime import datetime
 from typing import Any
 
-from dsp_permissions_scripts.models.errors import ApiError, PermissionsAlreadyUpToDate
+from dsp_permissions_scripts.models.errors import ApiError
+from dsp_permissions_scripts.models.errors import PermissionsAlreadyUpToDate
 from dsp_permissions_scripts.models.scope import PermissionScope
 from dsp_permissions_scripts.models.value import ValueUpdate
 from dsp_permissions_scripts.oap.oap_get import get_resource
diff --git a/dsp_permissions_scripts/template.py b/dsp_permissions_scripts/template.py
index bd713fbd..3792af8e 100644
--- a/dsp_permissions_scripts/template.py
+++ b/dsp_permissions_scripts/template.py
@@ -1,6 +1,7 @@
 from dsp_permissions_scripts.ap.ap_delete import delete_ap_of_group_on_server
 from dsp_permissions_scripts.ap.ap_get import get_aps_of_project
-from dsp_permissions_scripts.ap.ap_model import Ap, ApValue
+from dsp_permissions_scripts.ap.ap_model import Ap
+from dsp_permissions_scripts.ap.ap_model import ApValue
 from dsp_permissions_scripts.ap.ap_serialize import serialize_aps_of_project
 from dsp_permissions_scripts.ap.ap_set import apply_updated_aps_on_server
 from dsp_permissions_scripts.doap.doap_get import get_doaps_of_project
diff --git a/dsp_permissions_scripts/utils/dsp_client.py b/dsp_permissions_scripts/utils/dsp_client.py
index 9bb56435..70614ac3 100644
--- a/dsp_permissions_scripts/utils/dsp_client.py
+++ b/dsp_permissions_scripts/utils/dsp_client.py
@@ -1,14 +1,22 @@
 import json
 import re
 import time
-from dataclasses import dataclass, field
+from dataclasses import dataclass
+from dataclasses import field
 from functools import partial
 from importlib.metadata import version
-from typing import Any, Literal, Optional, cast
-
-from requests import ReadTimeout, RequestException, Response, Session
-
-from dsp_permissions_scripts.models.errors import ApiError, PermissionsAlreadyUpToDate
+from typing import Any
+from typing import Literal
+from typing import Optional
+from typing import cast
+
+from requests import ReadTimeout
+from requests import RequestException
+from requests import Response
+from requests import Session
+
+from dsp_permissions_scripts.models.errors import ApiError
+from dsp_permissions_scripts.models.errors import PermissionsAlreadyUpToDate
 from dsp_permissions_scripts.utils.get_logger import get_logger
 from dsp_permissions_scripts.utils.helpers import PACKAGE_NAME
 
diff --git a/dsp_permissions_scripts/utils/project.py b/dsp_permissions_scripts/utils/project.py
index dca3eccb..8c53e68c 100644
--- a/dsp_permissions_scripts/utils/project.py
+++ b/dsp_permissions_scripts/utils/project.py
@@ -8,17 +8,6 @@
 logger = get_logger(__name__)
 
 
-def _get_onto_iris_of_project(project_iri: str, dsp_client: DspClient) -> list[str]:
-    try:
-        response = dsp_client.get("/v2/ontologies/metadata")
-    except ApiError as err:
-        err.message = f"Could not get onto IRIs of project {project_iri}"
-        raise err from None
-    all_ontologies = response["@graph"]
-    project_onto_iris = [o["@id"] for o in all_ontologies if o["knora-api:attachedToProject"]["@id"] == project_iri]
-    return project_onto_iris
-
-
 def _get_class_iris_of_onto(onto_iri: str, dsp_client: DspClient) -> list[str]:
     try:
         response = dsp_client.get(f"/v2/ontologies/allentities/{quote_plus(onto_iri)}")
@@ -32,21 +21,21 @@ def _get_class_iris_of_onto(onto_iri: str, dsp_client: DspClient) -> list[str]:
     return class_iris
 
 
-def get_all_resource_class_iris_of_project(project_iri: str, dsp_client: DspClient) -> list[str]:
-    project_onto_iris = _get_onto_iris_of_project(project_iri, dsp_client)
+def get_all_resource_class_iris_of_project(onto_iris: list[str], dsp_client: DspClient) -> list[str]:
     all_class_iris = []
-    for onto_iri in project_onto_iris:
+    for onto_iri in onto_iris:
         class_iris = _get_class_iris_of_onto(onto_iri, dsp_client)
         all_class_iris.extend(class_iris)
         logger.info(f"Found {len(class_iris)} resource classes in onto {onto_iri}.")
     return all_class_iris
 
 
-def get_project_iri_by_shortcode(shortcode: str, dsp_client: DspClient) -> str:
+def get_project_iri_and_onto_iris_by_shortcode(shortcode: str, dsp_client: DspClient) -> tuple[str, list[str]]:
     try:
         response = dsp_client.get(f"/admin/projects/shortcode/{shortcode}")
     except ApiError as err:
         err.message = f"Could not get project IRI by shortcode {shortcode}"
         raise err from None
-    iri: str = response["project"]["id"]
-    return iri
+    project_iri: str = response["project"]["id"]
+    onto_iris: list[str] = response["project"]["ontologies"]
+    return project_iri, onto_iris
diff --git a/dsp_permissions_scripts/utils/try_request.py b/dsp_permissions_scripts/utils/try_request.py
index e60b2109..b1eb78e5 100644
--- a/dsp_permissions_scripts/utils/try_request.py
+++ b/dsp_permissions_scripts/utils/try_request.py
@@ -2,7 +2,8 @@
 from typing import Callable
 
 import requests
-from requests import ReadTimeout, RequestException
+from requests import ReadTimeout
+from requests import RequestException
 from urllib3.exceptions import ReadTimeoutError
 
 from dsp_permissions_scripts.utils.get_logger import get_logger
diff --git a/tests/test_ap.py b/tests/test_ap.py
index cbbd9cfd..6d69e120 100644
--- a/tests/test_ap.py
+++ b/tests/test_ap.py
@@ -1,6 +1,7 @@
 import unittest
 
-from dsp_permissions_scripts.ap.ap_model import Ap, ApValue
+from dsp_permissions_scripts.ap.ap_model import Ap
+from dsp_permissions_scripts.ap.ap_model import ApValue
 from dsp_permissions_scripts.models import group
 
 
diff --git a/tests/test_ap_serialization.py b/tests/test_ap_serialization.py
index ca5cdfe4..8942c75b 100644
--- a/tests/test_ap_serialization.py
+++ b/tests/test_ap_serialization.py
@@ -3,11 +3,10 @@
 import unittest
 from pathlib import Path
 
-from dsp_permissions_scripts.ap.ap_model import Ap, ApValue
-from dsp_permissions_scripts.ap.ap_serialize import (
-    deserialize_aps_of_project,
-    serialize_aps_of_project,
-)
+from dsp_permissions_scripts.ap.ap_model import Ap
+from dsp_permissions_scripts.ap.ap_model import ApValue
+from dsp_permissions_scripts.ap.ap_serialize import deserialize_aps_of_project
+from dsp_permissions_scripts.ap.ap_serialize import serialize_aps_of_project
 from dsp_permissions_scripts.models import group
 from dsp_permissions_scripts.models.host import Hosts
 
diff --git a/tests/test_doap_serialization.py b/tests/test_doap_serialization.py
index 52f106d8..955ef9bb 100644
--- a/tests/test_doap_serialization.py
+++ b/tests/test_doap_serialization.py
@@ -2,11 +2,10 @@
 import unittest
 from pathlib import Path
 
-from dsp_permissions_scripts.doap.doap_model import Doap, DoapTarget
-from dsp_permissions_scripts.doap.doap_serialize import (
-    deserialize_doaps_of_project,
-    serialize_doaps_of_project,
-)
+from dsp_permissions_scripts.doap.doap_model import Doap
+from dsp_permissions_scripts.doap.doap_model import DoapTarget
+from dsp_permissions_scripts.doap.doap_serialize import deserialize_doaps_of_project
+from dsp_permissions_scripts.doap.doap_serialize import serialize_doaps_of_project
 from dsp_permissions_scripts.models import group
 from dsp_permissions_scripts.models.host import Hosts
 from dsp_permissions_scripts.models.scope import PermissionScope
diff --git a/tests/test_oap_serialization.py b/tests/test_oap_serialization.py
index 69269c37..d2ee1828 100644
--- a/tests/test_oap_serialization.py
+++ b/tests/test_oap_serialization.py
@@ -5,10 +5,8 @@
 from dsp_permissions_scripts.models import group
 from dsp_permissions_scripts.models.scope import PermissionScope
 from dsp_permissions_scripts.oap.oap_model import Oap
-from dsp_permissions_scripts.oap.oap_serialize import (
-    deserialize_resource_oaps,
-    serialize_resource_oaps,
-)
+from dsp_permissions_scripts.oap.oap_serialize import deserialize_resource_oaps
+from dsp_permissions_scripts.oap.oap_serialize import serialize_resource_oaps
 from tests.test_scope_serialization import compare_scopes
 
 
diff --git a/tests/test_scope_serialization.py b/tests/test_scope_serialization.py
index 6a688b33..9603c699 100644
--- a/tests/test_scope_serialization.py
+++ b/tests/test_scope_serialization.py
@@ -5,10 +5,12 @@
 from dsp_permissions_scripts.models.scope import PermissionScope
 from dsp_permissions_scripts.utils.scope_serialization import (
     create_admin_route_object_from_scope,
+)
+from dsp_permissions_scripts.utils.scope_serialization import (
     create_scope_from_admin_route_object,
-    create_scope_from_string,
-    create_string_from_scope,
 )
+from dsp_permissions_scripts.utils.scope_serialization import create_scope_from_string
+from dsp_permissions_scripts.utils.scope_serialization import create_string_from_scope
 
 
 def compare_scopes(