diff --git a/doc/requirements.txt b/doc/requirements.txt
index 6fe7c34..12d5b68 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,4 +1,4 @@
 reno>=3.1.0 # Apache-2.0
-sphinx>=2.0.0,!=2.1.0 # BSD
+sphinx>=2.2.0 # BSD
 openstackdocstheme>=2.2.1 # Apache-2.0
 
diff --git a/requirements.txt b/requirements.txt
index 9423079..957f186 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,14 +1,10 @@
-# The order of packages is significant, because pip processes them in the order
-# of appearance. Changing the order has an impact on the overall integration
-# process, which may cause wedges in the gate later.
-
-pbr!=2.1.0,>=2.0.0 # Apache-2.0
+pbr>=3.0.0 # Apache-2.0
 neutron-lib>=1.25.0 # Apache-2.0
 oslo.config>=5.2.0 # Apache-2.0
 netaddr>=0.7.18 # BSD
 os-ken>=0.3.0 # Apache-2.0
 oslo.log>=3.36.0 # Apache-2.0
-oslo.serialization!=2.19.1,>=2.18.0 # Apache-2.0
+oslo.serialization>=2.20.0 # Apache-2.0
 oslo.utils>=3.33.0 # Apache-2.0
 packaging>=20.4  # Apache-2.0
 paramiko>=2.0.0 # LGPLv2.1+
@@ -16,5 +12,5 @@
 tenacity>=3.2.1 # Apache-2.0
 ddt>=1.0.1 # MIT
 testtools>=2.2.0 # MIT
-eventlet!=0.18.3,!=0.20.1,>=0.18.2 # MIT
+eventlet>=0.21.0 # MIT
 debtcollector>=1.2.0 # Apache-2.0
diff --git a/test-requirements.txt b/test-requirements.txt
index f5bac7c..0151f21 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,10 +1,6 @@
-# The order of packages is significant, because pip processes them in the order
-# of appearance. Changing the order has an impact on the overall integration
-# process, which may cause wedges in the gate later.
-
 hacking>=3.2.0,<3.3.0 # Apache-2.0
 
-coverage!=4.4,>=4.0 # Apache-2.0
+coverage>=4.4.1 # Apache-2.0
 flake8-import-order==0.12 # LGPLv3
 python-subunit>=1.0.0 # Apache-2.0/BSD
 oslotest>=3.2.0 # Apache-2.0
diff --git a/zuul.d/master_jobs.yaml b/zuul.d/master_jobs.yaml
index 2b7cc88..4824424 100644
--- a/zuul.d/master_jobs.yaml
+++ b/zuul.d/master_jobs.yaml
@@ -218,7 +218,17 @@
       - ^roles/.*functional.*$
       - ^playbooks/.*functional.*$
       - ^vagrant/.*$
-      - ^zuul.d/(?!(project)).*\.yaml
+      # Ignore everything except for zuul.d/project.yaml
+      - ^zuul.d/2023_1_jobs.yaml
+      - ^zuul.d/2023_2_jobs.yaml
+      - ^zuul.d/2024_1_jobs.yaml
+      - ^zuul.d/base-nested-switch.yaml
+      - ^zuul.d/master_jobs.yaml
+      - ^zuul.d/victoria_jobs.yaml
+      - ^zuul.d/wallaby_jobs.yaml
+      - ^zuul.d/xena_jobs.yaml
+      - ^zuul.d/yoga_jobs.yaml
+      - ^zuul.d/zed_jobs.yaml
 
 - job:
     name: neutron-tempest-plugin-openvswitch
@@ -314,7 +324,17 @@
       - ^playbooks/.*functional.*$
       - ^playbooks/.*linuxbridge.*$
       - ^vagrant/.*$
-      - ^zuul.d/(?!(project)).*\.yaml
+      # Ignore everything except for zuul.d/project.yaml
+      - ^zuul.d/2023_1_jobs.yaml
+      - ^zuul.d/2023_2_jobs.yaml
+      - ^zuul.d/2024_1_jobs.yaml
+      - ^zuul.d/base-nested-switch.yaml
+      - ^zuul.d/master_jobs.yaml
+      - ^zuul.d/victoria_jobs.yaml
+      - ^zuul.d/wallaby_jobs.yaml
+      - ^zuul.d/xena_jobs.yaml
+      - ^zuul.d/yoga_jobs.yaml
+      - ^zuul.d/zed_jobs.yaml
 
 - job:
     name: neutron-tempest-plugin-openvswitch-iptables_hybrid
@@ -419,7 +439,17 @@
       - ^playbooks/.*functional.*$
       - ^playbooks/.*linuxbridge.*$
       - ^vagrant/.*$
-      - ^zuul.d/(?!(project)).*\.yaml
+      # Ignore everything except for zuul.d/project.yaml
+      - ^zuul.d/2023_1_jobs.yaml
+      - ^zuul.d/2023_2_jobs.yaml
+      - ^zuul.d/2024_1_jobs.yaml
+      - ^zuul.d/base-nested-switch.yaml
+      - ^zuul.d/master_jobs.yaml
+      - ^zuul.d/victoria_jobs.yaml
+      - ^zuul.d/wallaby_jobs.yaml
+      - ^zuul.d/xena_jobs.yaml
+      - ^zuul.d/yoga_jobs.yaml
+      - ^zuul.d/zed_jobs.yaml
 
 - job:
     name: neutron-tempest-plugin-openvswitch-enforce-scope-old-defaults
@@ -584,7 +614,17 @@
       - ^playbooks/.*dynamic-routing.*$
       - ^playbooks/.*functional.*$
       - ^vagrant/.*$
-      - ^zuul.d/(?!(project)).*\.yaml
+      # Ignore everything except for zuul.d/project.yaml
+      - ^zuul.d/2023_1_jobs.yaml
+      - ^zuul.d/2023_2_jobs.yaml
+      - ^zuul.d/2024_1_jobs.yaml
+      - ^zuul.d/base-nested-switch.yaml
+      - ^zuul.d/master_jobs.yaml
+      - ^zuul.d/victoria_jobs.yaml
+      - ^zuul.d/wallaby_jobs.yaml
+      - ^zuul.d/xena_jobs.yaml
+      - ^zuul.d/yoga_jobs.yaml
+      - ^zuul.d/zed_jobs.yaml
 
 # TODO(slaweq): remove that job's definition as soon as new job
 # "neutron-tempest-plugin-linuxbridge" will be used in the neutron repo as
@@ -726,7 +766,17 @@
       - ^playbooks/.*functional.*$
       - ^playbooks/.*linuxbridge.*$
       - ^vagrant/.*$
-      - ^zuul.d/(?!(project)).*\.yaml
+      # Ignore everything except for zuul.d/project.yaml
+      - ^zuul.d/2023_1_jobs.yaml
+      - ^zuul.d/2023_2_jobs.yaml
+      - ^zuul.d/2024_1_jobs.yaml
+      - ^zuul.d/base-nested-switch.yaml
+      - ^zuul.d/master_jobs.yaml
+      - ^zuul.d/victoria_jobs.yaml
+      - ^zuul.d/wallaby_jobs.yaml
+      - ^zuul.d/xena_jobs.yaml
+      - ^zuul.d/yoga_jobs.yaml
+      - ^zuul.d/zed_jobs.yaml
 
 # TODO(slaweq): remove that job's definition as soon as new job
 # "neutron-tempest-plugin-ovn" will be used in the neutron-lib repo as
@@ -736,6 +786,22 @@
     parent: neutron-tempest-plugin-ovn
 
 - job:
+    name: neutron-tempest-plugin-api-ovs-wsgi
+    parent: neutron-tempest-plugin-openvswitch
+    voting: false
+    vars:
+      devstack_localrc:
+        NEUTRON_DEPLOY_MOD_WSGI: true
+
+- job:
+    name: neutron-tempest-plugin-api-ovn-wsgi
+    parent: neutron-tempest-plugin-ovn
+    voting: false
+    vars:
+      devstack_localrc:
+        NEUTRON_DEPLOY_MOD_WSGI: true
+
+- job:
     name: neutron-tempest-plugin-dvr-multinode-scenario
     parent: tempest-multinode-full
     description: |
@@ -956,7 +1022,17 @@
       - ^playbooks/.*functional.*$
       - ^playbooks/.*linuxbridge.*$
       - ^vagrant/.*$
-      - ^zuul.d/(?!(project)).*\.yaml
+      # Ignore everything except for zuul.d/project.yaml
+      - ^zuul.d/2023_1_jobs.yaml
+      - ^zuul.d/2023_2_jobs.yaml
+      - ^zuul.d/2024_1_jobs.yaml
+      - ^zuul.d/base-nested-switch.yaml
+      - ^zuul.d/master_jobs.yaml
+      - ^zuul.d/victoria_jobs.yaml
+      - ^zuul.d/wallaby_jobs.yaml
+      - ^zuul.d/xena_jobs.yaml
+      - ^zuul.d/yoga_jobs.yaml
+      - ^zuul.d/zed_jobs.yaml
 
 - job:
     name: neutron-tempest-plugin-designate-scenario
@@ -1005,7 +1081,7 @@
       - ^neutron/privileged/.*$
       - ^neutron/plugins/ml2/drivers/.*$
       - ^neutron/scheduler/.*$
-      - ^neutron/services/(?!externaldns).*$
+      - ^neutron/services/.*$
       - ^neutron_tempest_plugin/api/test_.*$
       - ^neutron_tempest_plugin/(bgpvpn|fwaas|neutron_dynamic_routing|sfc|tap_as_a_service|vpnaas).*$
       - ^neutron_tempest_plugin/services/bgp/.*$
@@ -1016,7 +1092,40 @@
       - ^playbooks/.*functional.*$
       - ^playbooks/.*linuxbridge.*$
       - ^vagrant/.*$
-      - ^zuul.d/(?!(project)).*\.yaml
+      # Ignore everything except for neutron/services/externaldns/
+      - ^neutron/services/auto_allocate/.*$
+      - ^neutron/services/conntrack_helper/.*$
+      - ^neutron/services/firewall/.*$
+      - ^neutron/services/flavors/.*$
+      - ^neutron/services/l3_router/.*$
+      - ^neutron/services/local_ip/.*$
+      - ^neutron/services/logapi/.*$
+      - ^neutron/services/loki/.*$
+      - ^neutron/services/metering/.*$
+      - ^neutron/services/ndp_proxy/.*$
+      - ^neutron/services/network_ip_availability/.*$
+      - ^neutron/services/network_segment_range/.*$
+      - ^neutron/services/ovn_l3/.*$
+      - ^neutron/services/placement_report/.*$
+      - ^neutron/services/portforwarding/.*$
+      - ^neutron/services/qos/.*$
+      - ^neutron/services/rbac/.*$
+      - ^neutron/services/revisions/.*$
+      - ^neutron/services/segments/.*$
+      - ^neutron/services/tag/.*$
+      - ^neutron/services/timestamp/.*$
+      - ^neutron/services/trunk/.*$
+      # Ignore everything except for zuul.d/project.yaml
+      - ^zuul.d/2023_1_jobs.yaml
+      - ^zuul.d/2023_2_jobs.yaml
+      - ^zuul.d/2024_1_jobs.yaml
+      - ^zuul.d/base-nested-switch.yaml
+      - ^zuul.d/master_jobs.yaml
+      - ^zuul.d/victoria_jobs.yaml
+      - ^zuul.d/wallaby_jobs.yaml
+      - ^zuul.d/xena_jobs.yaml
+      - ^zuul.d/yoga_jobs.yaml
+      - ^zuul.d/zed_jobs.yaml
 
 - job:
     name: neutron-tempest-plugin-sfc
@@ -1092,7 +1201,17 @@
       - ^playbooks/.*functional.*$
       - ^playbooks/.*linuxbridge.*$
       - ^vagrant/.*$
-      - ^zuul.d/(?!(project)).*\.yaml
+      # Ignore everything except for zuul.d/project.yaml
+      - ^zuul.d/2023_1_jobs.yaml
+      - ^zuul.d/2023_2_jobs.yaml
+      - ^zuul.d/2024_1_jobs.yaml
+      - ^zuul.d/base-nested-switch.yaml
+      - ^zuul.d/master_jobs.yaml
+      - ^zuul.d/victoria_jobs.yaml
+      - ^zuul.d/wallaby_jobs.yaml
+      - ^zuul.d/xena_jobs.yaml
+      - ^zuul.d/yoga_jobs.yaml
+      - ^zuul.d/zed_jobs.yaml
 
 - job:
     name: neutron-tempest-plugin-bgpvpn-bagpipe
@@ -1160,7 +1279,17 @@
       - ^playbooks/.*functional.*$
       - ^playbooks/.*linuxbridge.*$
       - ^vagrant/.*$
-      - ^zuul.d/(?!(project)).*\.yaml
+      # Ignore everything except for zuul.d/project.yaml
+      - ^zuul.d/2023_1_jobs.yaml
+      - ^zuul.d/2023_2_jobs.yaml
+      - ^zuul.d/2024_1_jobs.yaml
+      - ^zuul.d/base-nested-switch.yaml
+      - ^zuul.d/master_jobs.yaml
+      - ^zuul.d/victoria_jobs.yaml
+      - ^zuul.d/wallaby_jobs.yaml
+      - ^zuul.d/xena_jobs.yaml
+      - ^zuul.d/yoga_jobs.yaml
+      - ^zuul.d/zed_jobs.yaml
 
 - job:
     name: neutron-tempest-plugin-dynamic-routing
@@ -1214,14 +1343,23 @@
       - ^playbooks/.*functional.*$
       - ^playbooks/.*linuxbridge.*$
       - ^vagrant/.*$
-      - ^zuul.d/(?!(project)).*\.yaml
+      # Ignore everything except for zuul.d/project.yaml
+      - ^zuul.d/2023_1_jobs.yaml
+      - ^zuul.d/2023_2_jobs.yaml
+      - ^zuul.d/2024_1_jobs.yaml
+      - ^zuul.d/base-nested-switch.yaml
+      - ^zuul.d/master_jobs.yaml
+      - ^zuul.d/victoria_jobs.yaml
+      - ^zuul.d/wallaby_jobs.yaml
+      - ^zuul.d/xena_jobs.yaml
+      - ^zuul.d/yoga_jobs.yaml
+      - ^zuul.d/zed_jobs.yaml
 
 - job:
     name: neutron-tempest-plugin-fwaas
     parent: neutron-tempest-plugin-base
     timeout: 10800
     required-projects:
-      - openstack/devstack-gate
       - openstack/neutron-fwaas
       - openstack/neutron
       - openstack/neutron-tempest-plugin
@@ -1280,7 +1418,17 @@
       - ^playbooks/.*functional.*$
       - ^playbooks/.*linuxbridge.*$
       - ^vagrant/.*$
-      - ^zuul.d/(?!(project)).*\.yaml
+      # Ignore everything except for zuul.d/project.yaml
+      - ^zuul.d/2023_1_jobs.yaml
+      - ^zuul.d/2023_2_jobs.yaml
+      - ^zuul.d/2024_1_jobs.yaml
+      - ^zuul.d/base-nested-switch.yaml
+      - ^zuul.d/master_jobs.yaml
+      - ^zuul.d/victoria_jobs.yaml
+      - ^zuul.d/wallaby_jobs.yaml
+      - ^zuul.d/xena_jobs.yaml
+      - ^zuul.d/yoga_jobs.yaml
+      - ^zuul.d/zed_jobs.yaml
 
 - job:
     name: neutron-tempest-plugin-vpnaas
@@ -1349,7 +1497,17 @@
       - ^playbooks/.*functional.*$
       - ^playbooks/.*linuxbridge.*$
       - ^vagrant/.*$
-      - ^zuul.d/(?!(project)).*\.yaml
+      # Ignore everything except for zuul.d/project.yaml
+      - ^zuul.d/2023_1_jobs.yaml
+      - ^zuul.d/2023_2_jobs.yaml
+      - ^zuul.d/2024_1_jobs.yaml
+      - ^zuul.d/base-nested-switch.yaml
+      - ^zuul.d/master_jobs.yaml
+      - ^zuul.d/victoria_jobs.yaml
+      - ^zuul.d/wallaby_jobs.yaml
+      - ^zuul.d/xena_jobs.yaml
+      - ^zuul.d/yoga_jobs.yaml
+      - ^zuul.d/zed_jobs.yaml
 
 - job:
     name: neutron-tempest-plugin-vpnaas-ovn
@@ -1409,7 +1567,17 @@
       - ^playbooks/.*functional.*$
       - ^playbooks/.*linuxbridge.*$
       - ^vagrant/.*$
-      - ^zuul.d/(?!(project)).*\.yaml
+      # Ignore everything except for zuul.d/project.yaml
+      - ^zuul.d/2023_1_jobs.yaml
+      - ^zuul.d/2023_2_jobs.yaml
+      - ^zuul.d/2024_1_jobs.yaml
+      - ^zuul.d/base-nested-switch.yaml
+      - ^zuul.d/master_jobs.yaml
+      - ^zuul.d/victoria_jobs.yaml
+      - ^zuul.d/wallaby_jobs.yaml
+      - ^zuul.d/xena_jobs.yaml
+      - ^zuul.d/yoga_jobs.yaml
+      - ^zuul.d/zed_jobs.yaml
 
 - job:
     name: neutron-tempest-plugin-tap-as-a-service
@@ -1419,7 +1587,6 @@
     roles:
       - zuul: openstack/devstack
     required-projects:
-      - openstack/devstack-gate
       - openstack/neutron
       - openstack/neutron-tempest-plugin
       - openstack/tap-as-a-service
@@ -1519,4 +1686,14 @@
       - ^playbooks/.*functional.*$
       - ^playbooks/.*linuxbridge.*$
       - ^vagrant/.*$
-      - ^zuul.d/(?!(project)).*\.yaml
+      # Ignore everything except for zuul.d/project.yaml
+      - ^zuul.d/2023_1_jobs.yaml
+      - ^zuul.d/2023_2_jobs.yaml
+      - ^zuul.d/2024_1_jobs.yaml
+      - ^zuul.d/base-nested-switch.yaml
+      - ^zuul.d/master_jobs.yaml
+      - ^zuul.d/victoria_jobs.yaml
+      - ^zuul.d/wallaby_jobs.yaml
+      - ^zuul.d/xena_jobs.yaml
+      - ^zuul.d/yoga_jobs.yaml
+      - ^zuul.d/zed_jobs.yaml
diff --git a/zuul.d/project.yaml b/zuul.d/project.yaml
index 04f5f79..79762cd 100644
--- a/zuul.d/project.yaml
+++ b/zuul.d/project.yaml
@@ -21,6 +21,8 @@
         - neutron-tempest-plugin-dvr-multinode-scenario
         - neutron-tempest-plugin-openvswitch-distributed-dhcp
         - neutron-tempest-plugin-openvswitch-iptables_hybrid-distributed-dhcp
+        - neutron-tempest-plugin-api-ovs-wsgi
+        - neutron-tempest-plugin-api-ovn-wsgi
 
 
 - project-template:
@@ -185,7 +187,10 @@
       - release-notes-jobs-python3
     check:
       jobs:
-        - neutron-tempest-plugin-sfc
+        - neutron-tempest-plugin-sfc:
+            # Note(lajoskatona): make it voting when #2068727
+            # is fixed.
+            voting: false
         - neutron-tempest-plugin-sfc-2023-1
         - neutron-tempest-plugin-sfc-2023-2
         - neutron-tempest-plugin-sfc-2024-1
@@ -213,7 +218,6 @@
 
     gate:
       jobs:
-        - neutron-tempest-plugin-sfc
         - neutron-tempest-plugin-bgpvpn-bagpipe
         - neutron-tempest-plugin-dynamic-routing
         - neutron-tempest-plugin-fwaas
diff --git a/zuul.d/zed_jobs.yaml b/zuul.d/zed_jobs.yaml
index 7d8b2e1..b002218 100644
--- a/zuul.d/zed_jobs.yaml
+++ b/zuul.d/zed_jobs.yaml
@@ -1,8 +1,13 @@
 - job:
     name: neutron-tempest-plugin-openvswitch-zed
     parent: neutron-tempest-plugin-openvswitch
-    override-checkout: stable/zed
+    override-checkout: unmaintained/zed
     nodeset: neutron-nested-virt-ubuntu-focal
+    required-projects: &required-projects-zed
+      - openstack/neutron
+      - name: openstack/neutron-tempest-plugin
+        override-checkout: zed-last
+      - openstack/tempest
     vars:
       network_api_extensions_openvswitch:
         - local_ip
@@ -106,7 +111,8 @@
 - job:
     name: neutron-tempest-plugin-openvswitch-iptables_hybrid-zed
     parent: neutron-tempest-plugin-openvswitch-iptables_hybrid
-    override-checkout: stable/zed
+    override-checkout: unmaintained/zed
+    required-projects: *required-projects-zed
     nodeset: neutron-nested-virt-ubuntu-focal
     vars:
       network_api_extensions_common: *api_extensions
@@ -140,7 +146,8 @@
 - job:
     name: neutron-tempest-plugin-linuxbridge-zed
     parent: neutron-tempest-plugin-linuxbridge
-    override-checkout: stable/zed
+    override-checkout: unmaintained/zed
+    required-projects: *required-projects-zed
     nodeset: neutron-nested-virt-ubuntu-focal
     vars:
       network_api_extensions_common: *api_extensions
@@ -168,7 +175,8 @@
 - job:
     name: neutron-tempest-plugin-ovn-zed
     parent: neutron-tempest-plugin-ovn
-    override-checkout: stable/zed
+    override-checkout: unmaintained/zed
+    required-projects: *required-projects-zed
     nodeset: neutron-nested-virt-ubuntu-focal
     vars:
       tempest_test_regex: "\
@@ -196,14 +204,16 @@
     name: neutron-tempest-plugin-dvr-multinode-scenario-zed
     parent: neutron-tempest-plugin-dvr-multinode-scenario
     nodeset: openstack-two-node-focal
-    override-checkout: stable/zed
+    override-checkout: unmaintained/zed
+    required-projects: *required-projects-zed
     vars:
       network_api_extensions_common: *api_extensions
 
 - job:
     name: neutron-tempest-plugin-designate-scenario-zed
     parent: neutron-tempest-plugin-designate-scenario
-    override-checkout: stable/zed
+    override-checkout: unmaintained/zed
+    required-projects: *required-projects-zed
     nodeset: neutron-nested-virt-ubuntu-focal
     vars:
       network_api_extensions_common: *api_extensions
@@ -212,7 +222,8 @@
     name: neutron-tempest-plugin-sfc-zed
     parent: neutron-tempest-plugin-sfc
     nodeset: openstack-single-node-focal
-    override-checkout: stable/zed
+    override-checkout: unmaintained/zed
+    required-projects: *required-projects-zed
     vars:
       network_api_extensions_common: *api_extensions
 
@@ -220,7 +231,8 @@
     name: neutron-tempest-plugin-bgpvpn-bagpipe-zed
     parent: neutron-tempest-plugin-bgpvpn-bagpipe
     nodeset: openstack-single-node-focal
-    override-checkout: stable/zed
+    override-checkout: unmaintained/zed
+    required-projects: *required-projects-zed
     vars:
       network_api_extensions: *api_extensions
 
@@ -228,7 +240,8 @@
     name: neutron-tempest-plugin-dynamic-routing-zed
     parent: neutron-tempest-plugin-dynamic-routing
     nodeset: openstack-single-node-focal
-    override-checkout: stable/zed
+    override-checkout: unmaintained/zed
+    required-projects: *required-projects-zed
     vars:
       network_api_extensions_common: *api_extensions
       devstack_localrc:
@@ -258,7 +271,8 @@
     name: neutron-tempest-plugin-fwaas-zed
     parent: neutron-tempest-plugin-fwaas
     nodeset: openstack-single-node-focal
-    override-checkout: stable/zed
+    override-checkout: unmaintained/zed
+    required-projects: *required-projects-zed
     vars:
       network_api_extensions_common: *api_extensions
 
@@ -266,7 +280,8 @@
     name: neutron-tempest-plugin-vpnaas-zed
     parent: neutron-tempest-plugin-vpnaas
     nodeset: openstack-single-node-focal
-    override-checkout: stable/zed
+    override-checkout: unmaintained/zed
+    required-projects: *required-projects-zed
     vars:
       network_api_extensions_common: *api_extensions
 
@@ -274,6 +289,7 @@
     name: neutron-tempest-plugin-tap-as-a-service-zed
     parent: neutron-tempest-plugin-tap-as-a-service
     nodeset: openstack-single-node-focal
-    override-checkout: stable/zed
+    override-checkout: unmaintained/zed
+    required-projects: *required-projects-zed
     vars:
       network_api_extensions_common: *api_extensions