diff --git a/gns3server/api/routes/controller/acl.py b/gns3server/api/routes/controller/acl.py
index a454a1d61..49f814966 100644
--- a/gns3server/api/routes/controller/acl.py
+++ b/gns3server/api/routes/controller/acl.py
@@ -80,7 +80,11 @@ def _iter_route_paths(routes: Sequence[BaseRoute], prefix: str = "", include_mou
                 yield from _iter_route_paths(mounted_routes, _join_paths(prefix, route.path), include_mounted_routes)
 
 
-@router.get("/endpoints", dependencies=[Depends(has_privilege("ACE.Audit"))])
+@router.get(
+    "/endpoints",
+    response_model=List[schemas.ACEEndpoint],
+    dependencies=[Depends(has_privilege("ACE.Audit"))],
+)
 async def endpoints(
     users_repo: UsersRepository = Depends(get_repository(UsersRepository)),
     rbac_repo: RbacRepository = Depends(get_repository(RbacRepository)),
diff --git a/gns3server/api/routes/controller/api_keys.py b/gns3server/api/routes/controller/api_keys.py
index 42f1d66c2..c3297e612 100644
--- a/gns3server/api/routes/controller/api_keys.py
+++ b/gns3server/api/routes/controller/api_keys.py
@@ -50,12 +50,12 @@ def _generate_api_key(api_key_id: UUID | None = None) -> tuple[str, str, str, UU
     return raw_key, key_hash, key_prefix, api_key_id
 
 
-@router.post("", status_code=status.HTTP_201_CREATED)
+@router.post("", response_model=schemas.ApiKeyCreated, status_code=status.HTTP_201_CREATED)
 async def create_api_key(
     api_key_data: schemas.ApiKeyCreate,
     current_user: schemas.User = Depends(get_current_active_user),
     api_keys_repo: ApiKeysRepository = Depends(get_repository(ApiKeysRepository)),
-) -> dict:
+) -> schemas.ApiKeyCreated:
     """Create a new API key. The full key is returned only once."""
 
     raw_key, key_hash, key_prefix, new_key_id = _generate_api_key()
@@ -66,42 +66,42 @@ async def create_api_key(
         key_hash=key_hash,
         key_prefix=key_prefix,
     )
-    return {
-        "api_key_id": str(db_key.api_key_id),
-        "api_key": raw_key,
-        "name": db_key.name,
-        "key_prefix": db_key.key_prefix,
-        "created_at": db_key.created_at.isoformat() if db_key.created_at else None,
-    }
+    return schemas.ApiKeyCreated(
+        api_key_id=db_key.api_key_id,
+        api_key=raw_key,
+        name=db_key.name,
+        key_prefix=db_key.key_prefix,
+        created_at=db_key.created_at.isoformat() if db_key.created_at else None,
+    )
 
 
-@router.get("")
+@router.get("", response_model=list[schemas.ApiKey])
 async def list_api_keys(
     current_user: schemas.User = Depends(get_current_active_user),
     api_keys_repo: ApiKeysRepository = Depends(get_repository(ApiKeysRepository)),
-) -> list[dict]:
+) -> list[schemas.ApiKey]:
     """List all API keys for the current user."""
 
     keys = await api_keys_repo.get_api_keys_by_user(current_user.user_id)
     return [
-        {
-            "api_key_id": str(k.api_key_id),
-            "name": k.name,
-            "key_prefix": k.key_prefix,
-            "created_at": k.created_at.isoformat() if k.created_at else None,
-            "last_used_at": k.last_used_at.isoformat() if k.last_used_at else None,
-            "revoked": k.revoked,
-        }
+        schemas.ApiKey(
+            api_key_id=k.api_key_id,
+            name=k.name,
+            key_prefix=k.key_prefix,
+            created_at=k.created_at.isoformat() if k.created_at else None,
+            last_used_at=k.last_used_at.isoformat() if k.last_used_at else None,
+            revoked=k.revoked,
+        )
         for k in keys
     ]
 
 
-@router.post("/{api_key_id}/revoke", status_code=status.HTTP_200_OK)
+@router.post("/{api_key_id}/revoke", response_model=schemas.ApiKeyMessage, status_code=status.HTTP_200_OK)
 async def revoke_api_key(
     api_key_id: UUID,
     current_user: schemas.User = Depends(get_current_active_user),
     api_keys_repo: ApiKeysRepository = Depends(get_repository(ApiKeysRepository)),
-) -> dict:
+) -> schemas.ApiKeyMessage:
     """Revoke an API key. It will immediately stop working, but can be restored."""
 
     key = await api_keys_repo.get_api_key(api_key_id)
@@ -111,15 +111,15 @@ async def revoke_api_key(
         raise HTTPException(status_code=403, detail="Cannot modify another user's API key")
 
     await api_keys_repo.revoke_api_key(api_key_id)
-    return {"message": f"API key '{key.name}' revoked"}
+    return schemas.ApiKeyMessage(message=f"API key '{key.name}' revoked")
 
 
-@router.post("/{api_key_id}/restore", status_code=status.HTTP_200_OK)
+@router.post("/{api_key_id}/restore", response_model=schemas.ApiKeyMessage, status_code=status.HTTP_200_OK)
 async def restore_api_key(
     api_key_id: UUID,
     current_user: schemas.User = Depends(get_current_active_user),
     api_keys_repo: ApiKeysRepository = Depends(get_repository(ApiKeysRepository)),
-) -> dict:
+) -> schemas.ApiKeyMessage:
     """Restore a previously revoked API key."""
 
     key = await api_keys_repo.get_api_key(api_key_id)
@@ -129,7 +129,7 @@ async def restore_api_key(
         raise HTTPException(status_code=403, detail="Cannot modify another user's API key")
 
     await api_keys_repo.restore_api_key(api_key_id)
-    return {"message": f"API key '{key.name}' restored"}
+    return schemas.ApiKeyMessage(message=f"API key '{key.name}' restored")
 
 
 @router.delete("/{api_key_id}", status_code=status.HTTP_204_NO_CONTENT)
diff --git a/gns3server/api/routes/controller/appliances.py b/gns3server/api/routes/controller/appliances.py
index 1d3f0e413..c20554a9f 100644
--- a/gns3server/api/routes/controller/appliances.py
+++ b/gns3server/api/routes/controller/appliances.py
@@ -82,6 +82,8 @@ def get_appliance(appliance_id: UUID) -> schemas.Appliance:
 
 @router.post(
     "/{appliance_id}/version",
+    response_model=schemas.Appliance,
+    response_model_exclude_unset=True,
     status_code=status.HTTP_201_CREATED,
     dependencies=[Depends(has_privilege("Appliance.Allocate"))],
 )
diff --git a/gns3server/api/routes/controller/computes.py b/gns3server/api/routes/controller/computes.py
index a33ebc9f6..796a72063 100644
--- a/gns3server/api/routes/controller/computes.py
+++ b/gns3server/api/routes/controller/computes.py
@@ -212,7 +212,7 @@ async def vmware_vms(compute_id: Union[str, UUID]) -> List[schemas.ComputeVMware
     return result
 
 
-@router.post("/{compute_id}/dynamips/auto_idlepc")
+@router.post("/{compute_id}/dynamips/auto_idlepc", response_model=schemas.IdlePC)
 async def dynamips_autoidlepc(compute_id: Union[str, UUID], auto_idle_pc: schemas.AutoIdlePC):
     """
     Find a suitable Idle-PC value for a given IOS image. This may take a few minutes.
diff --git a/gns3server/api/routes/controller/controller.py b/gns3server/api/routes/controller/controller.py
index cef3ee77e..a6a499372 100644
--- a/gns3server/api/routes/controller/controller.py
+++ b/gns3server/api/routes/controller/controller.py
@@ -162,7 +162,12 @@ async def update_iou_license(iou_license: schemas.IOULicense) -> schemas.IOULice
     return current_iou_license
 
 
-@router.get("/statistics", dependencies=[Depends(get_current_active_user)])
+@router.get(
+    "/statistics",
+    response_model=schemas.ServerStatistics,
+    response_model_exclude_unset=True,
+    dependencies=[Depends(get_current_active_user)],
+)
 async def statistics() -> dict:
     """
     Return server statistics including compute resources, projects, and nodes.
diff --git a/gns3server/api/routes/controller/gns3vm.py b/gns3server/api/routes/controller/gns3vm.py
index e0ae90eba..21d2cdf49 100644
--- a/gns3server/api/routes/controller/gns3vm.py
+++ b/gns3server/api/routes/controller/gns3vm.py
@@ -30,7 +30,7 @@ from gns3server.controller import Controller
 router = APIRouter()
 
 
-@router.get("/engines")
+@router.get("/engines", response_model=List[schemas.GNS3VMEngineInfo])
 async def get_engines() -> List[dict]:
     """
     Return the list of supported engines for the GNS3VM.
@@ -40,7 +40,7 @@ async def get_engines() -> List[dict]:
     return gns3_vm.engine_list()
 
 
-@router.get("/engines/{engine}/vms")
+@router.get("/engines/{engine}/vms", response_model=List[schemas.GNS3VMInfo])
 async def get_vms(engine: str) -> List[dict]:
     """
     Return all the available VMs for a specific virtualization engine.
diff --git a/gns3server/api/routes/controller/images.py b/gns3server/api/routes/controller/images.py
index c82f2464a..4593a4f97 100644
--- a/gns3server/api/routes/controller/images.py
+++ b/gns3server/api/routes/controller/images.py
@@ -329,7 +329,12 @@ async def prune_images(
     )
 
 
-@router.post("/install", status_code=status.HTTP_200_OK, dependencies=[Depends(has_privilege("Image.Allocate"))])
+@router.post(
+    "/install",
+    response_model=schemas.ImageInstallResult,
+    status_code=status.HTTP_200_OK,
+    dependencies=[Depends(has_privilege("Image.Allocate"))],
+)
 async def install_images(
     images_repo: ImagesRepository = Depends(get_repository(ImagesRepository)),
     templates_repo: TemplatesRepository = Depends(get_repository(TemplatesRepository)),
diff --git a/gns3server/api/routes/controller/links.py b/gns3server/api/routes/controller/links.py
index 83c0899fd..d17119624 100644
--- a/gns3server/api/routes/controller/links.py
+++ b/gns3server/api/routes/controller/links.py
@@ -20,7 +20,7 @@ API routes for links.
 
 import logging
 import os
-from typing import Any, List, Optional
+from typing import Any, Dict, List, Optional
 from uuid import UUID, uuid4
 
 import aiohttp
@@ -205,11 +205,11 @@ async def create_links(project_id: UUID, links_create: List[schemas.LinkCreate])
 
 @router.get(
     "/{link_id}/available_filters",
-    response_model=List[schemas.LinkFilterDefinition],
+    response_model=List[schemas.LinkFilterInfo],
     response_model_exclude_unset=True,
     dependencies=[Depends(has_privilege("Link.Audit"))],
 )
-async def get_filters(link: Link = Depends(dep_link)) -> List[schemas.LinkFilterDefinition]:
+async def get_filters(link: Link = Depends(dep_link)) -> List[dict]:
     """
     Return all filters available for a given link.
 
@@ -353,6 +353,7 @@ async def stop_capture(link: Link = Depends(dep_link)) -> None:
 
 @router.post(
     "/{link_id}/capture/wireshark/restart",
+    response_model=schemas.LinkWiresharkRestart,
     status_code=status.HTTP_200_OK,
     dependencies=[Depends(has_privilege("Link.Capture"))],
 )
@@ -510,7 +511,12 @@ async def web_wireshark_websocket(
             pass
 
 
-@router.get("/{link_id}/markers", dependencies=[Depends(has_privilege("Link.Audit"))])
+@router.get(
+    "/{link_id}/markers",
+    response_model=Dict[str, schemas.Marker],
+    response_model_exclude_unset=True,
+    dependencies=[Depends(has_privilege("Link.Audit"))],
+)
 async def get_markers(link: Link = Depends(dep_link)) -> dict:
     """
     Return all traffic-insight markers configured on this link.
@@ -522,7 +528,11 @@ async def get_markers(link: Link = Depends(dep_link)) -> dict:
 
 
 @router.post(
-    "/{link_id}/markers", status_code=status.HTTP_201_CREATED, dependencies=[Depends(has_privilege("Link.Modify"))]
+    "/{link_id}/markers",
+    response_model=schemas.Marker,
+    response_model_exclude_unset=True,
+    status_code=status.HTTP_201_CREATED,
+    dependencies=[Depends(has_privilege("Link.Modify"))],
 )
 async def create_marker(marker_data: schemas.MarkerCreate, link: Link = Depends(dep_link)) -> dict:
     """
@@ -567,7 +577,12 @@ async def delete_marker(marker_name: str, link: Link = Depends(dep_link)) -> Non
     await link.stop_marker(marker_name)
 
 
-@router.put("/{link_id}/markers/{marker_name}", dependencies=[Depends(has_privilege("Link.Modify"))])
+@router.put(
+    "/{link_id}/markers/{marker_name}",
+    response_model=schemas.Marker,
+    response_model_exclude_unset=True,
+    dependencies=[Depends(has_privilege("Link.Modify"))],
+)
 async def update_marker(marker_name: str, marker_data: schemas.MarkerUpdate, link: Link = Depends(dep_link)) -> dict:
     """
     Update a traffic-insight marker (change BPF, tag, or enabled).
diff --git a/gns3server/api/routes/controller/nodes.py b/gns3server/api/routes/controller/nodes.py
index 04dbd332a..988524835 100644
--- a/gns3server/api/routes/controller/nodes.py
+++ b/gns3server/api/routes/controller/nodes.py
@@ -573,7 +573,11 @@ async def get_node_links(node: Node = Depends(dep_node)) -> List[schemas.Link]:
     return links
 
 
-@router.get("/{node_id}/dynamips/auto_idlepc", dependencies=[Depends(has_privilege("Node.Audit"))])
+@router.get(
+    "/{node_id}/dynamips/auto_idlepc",
+    response_model=schemas.IdlePC,
+    dependencies=[Depends(has_privilege("Node.Audit"))],
+)
 async def auto_idlepc(node: Node = Depends(dep_node)) -> dict:
     """
     Compute an Idle-PC value for a Dynamips node
diff --git a/gns3server/api/routes/controller/projects.py b/gns3server/api/routes/controller/projects.py
index aceb39811..3736aba39 100644
--- a/gns3server/api/routes/controller/projects.py
+++ b/gns3server/api/routes/controller/projects.py
@@ -31,7 +31,7 @@ import gns3server.utils.zipfile_zstd as zipfile
 
 log = logging.getLogger()
 
-from typing import Any, List, Optional
+from typing import Any, Dict, List, Optional
 from uuid import UUID
 
 from fastapi import (
@@ -237,7 +237,9 @@ async def delete_project(
     await rbac_repo.delete_all_ace_starting_with_path(f"/projects/{project.id}")
 
 
-@router.get("/{project_id}/stats", dependencies=[Depends(has_privilege("Project.Audit"))])
+@router.get(
+    "/{project_id}/stats", response_model=schemas.ProjectStats, dependencies=[Depends(has_privilege("Project.Audit"))]
+)
 def get_project_stats(project: Project = Depends(dep_project)) -> dict:
     """
     Return a project statistics.
@@ -248,7 +250,12 @@ def get_project_stats(project: Project = Depends(dep_project)) -> dict:
     return project.stats()
 
 
-@router.get("/{project_id}/markers", dependencies=[Depends(has_privilege("Project.Audit"))])
+@router.get(
+    "/{project_id}/markers",
+    response_model=Dict[str, schemas.ProjectMarker],
+    response_model_exclude_unset=True,
+    dependencies=[Depends(has_privilege("Project.Audit"))],
+)
 def get_project_markers(project: Project = Depends(dep_project)) -> dict:
     """
     Return all traffic-insight markers across every link in the project.
@@ -279,6 +286,7 @@ async def _replay_response(awaitable):
 
 @router.get(
     "/{project_id}/markers/tags/{tag}/replay/range",
+    response_model=schemas.ReplayTimeline,
     dependencies=[Depends(has_privilege("Project.Audit"))],
 )
 async def replay_tag_range(
@@ -319,6 +327,7 @@ async def replay_tag_range(
 
 @router.get(
     "/{project_id}/markers/tags/{tag}/replay/frames",
+    response_model=schemas.ReplayFrames,
     dependencies=[Depends(has_privilege("Project.Audit"))],
 )
 async def replay_tag_frames(
@@ -359,6 +368,8 @@ async def replay_tag_frames(
 
 @router.get(
     "/{project_id}/markers/tags/{tag}/replay/frame/detail",
+    response_model=schemas.ReplayFrameDetail,
+    response_model_exclude_unset=True,
     dependencies=[Depends(has_privilege("Project.Audit"))],
 )
 async def replay_tag_frame_detail(
@@ -397,7 +408,12 @@ async def replay_tag_frame_detail(
 # ---------------------------------------------------------------------------
 
 
-@router.get("/{project_id}/marker-definitions", dependencies=[Depends(has_privilege("Project.Audit"))])
+@router.get(
+    "/{project_id}/marker-definitions",
+    response_model=Dict[str, schemas.MarkerDefinitionWithLinks],
+    response_model_exclude_unset=True,
+    dependencies=[Depends(has_privilege("Project.Audit"))],
+)
 def get_marker_definitions(project: Project = Depends(dep_project)) -> dict:
     """
     Return all project-level marker definitions with their bound link IDs.
@@ -419,6 +435,8 @@ def get_marker_definitions(project: Project = Depends(dep_project)) -> dict:
 
 @router.post(
     "/{project_id}/marker-definitions",
+    response_model=schemas.MarkerDefinition,
+    response_model_exclude_unset=True,
     status_code=status.HTTP_201_CREATED,
     dependencies=[Depends(has_privilege("Project.Modify"))],
 )
@@ -446,7 +464,12 @@ async def create_marker_definition(
     return project.marker_definitions.get(name, {})
 
 
-@router.put("/{project_id}/marker-definitions/{def_name}", dependencies=[Depends(has_privilege("Project.Modify"))])
+@router.put(
+    "/{project_id}/marker-definitions/{def_name}",
+    response_model=schemas.MarkerDefinition,
+    response_model_exclude_unset=True,
+    dependencies=[Depends(has_privilege("Project.Modify"))],
+)
 async def update_marker_definition(
     def_name: str, def_data: schemas.MarkerDefinitionCreate, project: Project = Depends(dep_project)
 ) -> dict:
diff --git a/gns3server/api/routes/controller/symbols.py b/gns3server/api/routes/controller/symbols.py
index a9c80741a..afa004398 100644
--- a/gns3server/api/routes/controller/symbols.py
+++ b/gns3server/api/routes/controller/symbols.py
@@ -21,7 +21,7 @@ API routes for symbols.
 
 import logging
 import os
-from typing import List
+from typing import Dict, List
 
 from fastapi import APIRouter, Depends, Request, Response, status
 from fastapi.responses import FileResponse
@@ -40,7 +40,7 @@ log = logging.getLogger(__name__)
 router = APIRouter()
 
 
-@router.get("", dependencies=[Depends(has_privilege("Symbol.Audit"))])
+@router.get("", response_model=List[schemas.SymbolInfo], dependencies=[Depends(has_privilege("Symbol.Audit"))])
 def get_symbols() -> List[dict]:
     """
     Return all symbols.
@@ -83,6 +83,7 @@ async def get_symbol(symbol_id: str, request: Request) -> Response:
 
 @router.get(
     "/{symbol_id:path}/dimensions",
+    response_model=schemas.SymbolDimensions,
     responses={404: {"model": schemas.ErrorMessage, "description": "Could not find symbol"}},
     dependencies=[Depends(has_privilege("Symbol.Audit"))],
 )
@@ -102,7 +103,11 @@ async def get_symbol_dimensions(symbol_id: str) -> dict:
         raise ControllerNotFoundError(f"Could not get symbol file: {e}")
 
 
-@router.get("/default_symbols", dependencies=[Depends(has_privilege("Symbol.Audit"))])
+@router.get(
+    "/default_symbols",
+    response_model=Dict[str, Dict[str, str]],
+    dependencies=[Depends(has_privilege("Symbol.Audit"))],
+)
 def get_default_symbols() -> dict:
     """
     Return all default symbols.
diff --git a/gns3server/schemas/__init__.py b/gns3server/schemas/__init__.py
index 7419f911c..74ddfe4af 100644
--- a/gns3server/schemas/__init__.py
+++ b/gns3server/schemas/__init__.py
@@ -26,10 +26,20 @@ from .controller.computes import (
     ComputeUpdate,
     ComputeVirtualBoxVM,
     ComputeVMwareVM,
+    IdlePC,
 )
 from .controller.drawings import Drawing
-from .controller.gns3vm import GNS3VM
-from .controller.images import Image, ImageSyncJob, ImageSyncRequest, ImageType, ImageUpload
+from .controller.gns3vm import GNS3VM, GNS3VMEngineInfo, GNS3VMInfo
+from .controller.images import (
+    Image,
+    ImageInstallCreated,
+    ImageInstallResult,
+    ImageInstallSkipped,
+    ImageSyncJob,
+    ImageSyncRequest,
+    ImageType,
+    ImageUpload,
+)
 
 # Controller schemas
 from .controller.links import (
@@ -38,15 +48,20 @@ from .controller.links import (
     LinkBatchResult,
     LinkCapture,
     LinkCreate,
-    LinkFilterDefinition,
+    LinkFilterInfo,
     LinkFilterParameter,
     LinkFilters,
     LinkFilterType,
     LinkIfaceInfo,
     LinkUpdate,
+    LinkWiresharkRestart,
+    Marker,
     MarkerCreate,
+    MarkerDefinition,
     MarkerDefinitionCreate,
+    MarkerDefinitionWithLinks,
     MarkerUpdate,
+    ProjectMarker,
     UDPPortInfo,
 )
 from .controller.nodes import Node, NodeBatchResult, NodeCapture, NodeCreate, NodeDuplicate, NodeUpdate
@@ -57,6 +72,7 @@ from .controller.projects import (
     ProjectCreate,
     ProjectDuplicate,
     ProjectFile,
+    ProjectStats,
     ProjectUpdate,
 )
 from .controller.templates import Template, TemplateCreate, TemplateUpdate, TemplateUsage
@@ -124,12 +140,32 @@ from .compute.vmware_nodes import VMware, VMwareCreate, VMwareUpdate
 from .compute.vpcs_nodes import VPCS, VPCSCreate, VPCSUpdate
 from .controller.capabilities import Capabilities
 from .controller.iou_license import IOULicense
+from .controller.marker_replay import (
+    ReplayFrame,
+    ReplayFrameDetail,
+    ReplayFrames,
+    ReplayFrameSource,
+    ReplaySource,
+    ReplayTimeline,
+    ReplayTreeNode,
+)
 from .controller.netmiko import NetmikoDeviceType, NetmikoDeviceTypeList
 from .controller.notifications import Notification, NotificationAction
 from .controller.pools import Resource, ResourceCreate, ResourcePool, ResourcePoolCreate, ResourcePoolUpdate
-from .controller.rbac import ACE, ACECreate, ACEUpdate, Privilege, Role, RoleCreate, RoleUpdate
+from .controller.rbac import ACE, ACECreate, ACEEndpoint, ACEUpdate, Privilege, Role, RoleCreate, RoleUpdate
 from .controller.settings import SettingsResponse, SettingsUpdate, SettingsUpdateResponse
 from .controller.snapshots import Snapshot, SnapshotCreate
+from .controller.statistics import (
+    ComputeStatistics,
+    ComputeStatisticsEntry,
+    LinkStatistics,
+    NodeStatistics,
+    ProjectCountStatistics,
+    ServerStatistics,
+    WebWiresharkContainer,
+    WebWiresharkStatistics,
+)
+from .controller.symbols import SymbolDimensions, SymbolInfo
 from .controller.templates.cloud_templates import CloudTemplate, CloudTemplateUpdate
 from .controller.templates.docker_templates import DockerTemplate, DockerTemplateUpdate
 from .controller.templates.dynamips_templates import (
@@ -158,7 +194,7 @@ from .controller.templates.vmware_templates import VMwareTemplate, VMwareTemplat
 
 # Controller template schemas
 from .controller.templates.vpcs_templates import VPCSTemplate, VPCSTemplateUpdate
-from .controller.tokens import ApiKeyCreate, RefreshTokenRequest, Token
+from .controller.tokens import ApiKey, ApiKeyCreate, ApiKeyCreated, ApiKeyMessage, RefreshTokenRequest, Token
 
 # Schemas for both controller and compute
 from .qemu_disk_image import QemuDiskImageCreate, QemuDiskImageFormat, QemuDiskImageUpdate
@@ -172,12 +208,16 @@ __all__ = [
     "UDPNIO",
     "VPCS",
     "ACECreate",
+    "ACEEndpoint",
     "ACEUpdate",
     "ATMSwitch",
     "ATMSwitchCreate",
     "ATMSwitchUpdate",
     "AnchorNIO",
+    "ApiKey",
     "ApiKeyCreate",
+    "ApiKeyCreated",
+    "ApiKeyMessage",
     "Appliance",
     "ApplianceVersion",
     "ApplianceVersionCreate",
@@ -212,6 +252,8 @@ __all__ = [
     "Compute",
     "ComputeCreate",
     "ComputeDockerImage",
+    "ComputeStatistics",
+    "ComputeStatisticsEntry",
     "ComputeUpdate",
     "ComputeVMwareVM",
     "ComputeVirtualBoxVM",
@@ -243,13 +285,19 @@ __all__ = [
     "FrameRelaySwitch",
     "FrameRelaySwitchCreate",
     "FrameRelaySwitchUpdate",
+    "GNS3VMEngineInfo",
+    "GNS3VMInfo",
     "IOUCreate",
     "IOULicense",
     "IOUStart",
     "IOUTemplate",
     "IOUTemplateUpdate",
     "IOUUpdate",
+    "IdlePC",
     "Image",
+    "ImageInstallCreated",
+    "ImageInstallResult",
+    "ImageInstallSkipped",
     "ImageSyncJob",
     "ImageSyncRequest",
     "ImageType",
@@ -265,15 +313,20 @@ __all__ = [
     "LinkBatchResult",
     "LinkCapture",
     "LinkCreate",
-    "LinkFilterDefinition",
+    "LinkFilterInfo",
     "LinkFilterParameter",
     "LinkFilterType",
     "LinkFilters",
     "LinkIfaceInfo",
+    "LinkStatistics",
     "LinkUpdate",
+    "LinkWiresharkRestart",
     "LoggedInUserUpdate",
+    "Marker",
     "MarkerCreate",
+    "MarkerDefinition",
     "MarkerDefinitionCreate",
+    "MarkerDefinitionWithLinks",
     "MarkerRebuild",
     "MarkerToggle",
     "MarkerUpdate",
@@ -287,6 +340,7 @@ __all__ = [
     "NodeCreate",
     "NodeDuplicate",
     "NodeFile",
+    "NodeStatistics",
     "NodeUpdate",
     "Notification",
     "NotificationAction",
@@ -295,9 +349,12 @@ __all__ = [
     "Privilege",
     "Project",
     "ProjectCompression",
+    "ProjectCountStatistics",
     "ProjectCreate",
     "ProjectDuplicate",
     "ProjectFile",
+    "ProjectMarker",
+    "ProjectStats",
     "ProjectUpdate",
     "Qemu",
     "QemuCreate",
@@ -309,6 +366,13 @@ __all__ = [
     "QemuUpdate",
     "RefreshTokenRequest",
     "RenameSession",
+    "ReplayFrame",
+    "ReplayFrameDetail",
+    "ReplayFrameSource",
+    "ReplayFrames",
+    "ReplaySource",
+    "ReplayTimeline",
+    "ReplayTreeNode",
     "Resource",
     "ResourceCreate",
     "ResourcePool",
@@ -318,11 +382,14 @@ __all__ = [
     "RoleCreate",
     "RoleUpdate",
     "ServerConfig",
+    "ServerStatistics",
     "SettingsResponse",
     "SettingsUpdate",
     "SettingsUpdateResponse",
     "Snapshot",
     "SnapshotCreate",
+    "SymbolDimensions",
+    "SymbolInfo",
     "Template",
     "TemplateCreate",
     "TemplateUpdate",
@@ -350,4 +417,6 @@ __all__ = [
     "VirtualBoxTemplate",
     "VirtualBoxTemplateUpdate",
     "VirtualBoxUpdate",
+    "WebWiresharkContainer",
+    "WebWiresharkStatistics",
 ]
diff --git a/gns3server/schemas/controller/computes.py b/gns3server/schemas/controller/computes.py
index 5742e4391..229a97660 100644
--- a/gns3server/schemas/controller/computes.py
+++ b/gns3server/schemas/controller/computes.py
@@ -153,3 +153,11 @@ class AutoIdlePC(BaseModel):
     model_config = ConfigDict(
         json_schema_extra={"example": {"platform": "c7200", "image": "/path/to/c7200_image.bin", "ram": 256}}
     )
+
+
+class IdlePC(BaseModel):
+    """
+    Result of an Idle-PC computation.
+    """
+
+    idlepc: Optional[str] = Field(None, description="Idle-PC value, null when none was found")
diff --git a/gns3server/schemas/controller/gns3vm.py b/gns3server/schemas/controller/gns3vm.py
index 71a975d43..2c39a5657 100644
--- a/gns3server/schemas/controller/gns3vm.py
+++ b/gns3server/schemas/controller/gns3vm.py
@@ -55,3 +55,24 @@ class GNS3VM(BaseModel):
     vcpus: Optional[int] = Field(None, description="Number of CPUs to allocate for the GNS3 VM")
     ram: Optional[int] = Field(None, description="Amount of memory to allocate for the GNS3 VM")
     port: Optional[int] = Field(None, gt=0, le=65535)
+
+
+class GNS3VMEngineInfo(BaseModel):
+    """
+    A virtualization engine supported by the GNS3 VM.
+    """
+
+    engine_id: str = Field(..., description="Engine identifier")
+    name: str = Field(..., description="Engine display name")
+    description: str = Field(..., description="Engine description (may contain HTML)")
+    support_when_exit: bool = Field(..., description="The engine supports the 'when exit' action")
+    support_headless: bool = Field(..., description="The engine supports headless mode")
+    support_ram: bool = Field(..., description="The engine supports RAM and vCPUs allocation")
+
+
+class GNS3VMInfo(BaseModel):
+    """
+    A virtual machine available on a virtualization engine.
+    """
+
+    vmname: str = Field(..., description="Virtual machine name")
diff --git a/gns3server/schemas/controller/images.py b/gns3server/schemas/controller/images.py
index 92ba88775..17eb73ad3 100644
--- a/gns3server/schemas/controller/images.py
+++ b/gns3server/schemas/controller/images.py
@@ -16,7 +16,8 @@
 
 from datetime import datetime
 from enum import Enum
-from typing import Annotated, Literal, Optional
+from typing import Annotated, List, Literal, Optional
+from uuid import UUID
 
 from pydantic import BaseModel, ConfigDict, Field
 
@@ -100,3 +101,32 @@ class ImageCompatibility(BaseModel):
 class ImageCompatibilityCatalog(BaseModel):
     image_sizes: list[int]
     has_unknown_sizes: bool
+
+
+class ImageInstallCreated(BaseModel):
+    """
+    A template created from an image by the automatic installation.
+    """
+
+    template_id: UUID
+    name: Optional[str] = None
+    version: Optional[str] = None
+    template_type: Optional[str] = None
+
+
+class ImageInstallSkipped(BaseModel):
+    """
+    An image or template that the automatic installation skipped.
+    """
+
+    name: Optional[str] = None
+    reason: str
+
+
+class ImageInstallResult(BaseModel):
+    """
+    Result of the automatic template installation from images.
+    """
+
+    created: List[ImageInstallCreated]
+    skipped: List[ImageInstallSkipped]
diff --git a/gns3server/schemas/controller/links.py b/gns3server/schemas/controller/links.py
index c18547c5e..e1ac4993c 100644
--- a/gns3server/schemas/controller/links.py
+++ b/gns3server/schemas/controller/links.py
@@ -139,29 +139,6 @@ class LinkFilters(BaseModel):
     )
 
 
-class LinkFilterParameter(BaseModel):
-    """
-    Parameter of a packet filter.
-    """
-
-    name: str
-    type: Literal["int", "text", "str"]
-    minimum: Optional[int] = None
-    maximum: Optional[int] = None
-    unit: Optional[str] = None
-
-
-class LinkFilterDefinition(BaseModel):
-    """
-    Packet filter available on a link.
-    """
-
-    type: LinkFilterType
-    name: str
-    description: str
-    parameters: List[LinkFilterParameter]
-
-
 class LinkBase(BaseModel):
     """
     Link data.
@@ -409,3 +386,81 @@ class MarkerDefinitionCreate(BaseModel):
     @classmethod
     def _both_to_none(cls, v):
         return None if v == "both" else v
+
+
+class Marker(BaseModel):
+    """
+    A traffic-insight marker attached to a link.
+    """
+
+    bpf: str = Field(..., description="libpcap BPF expression")
+    tag: Optional[int] = Field(None, description="Correlation id shared by markers replayed together")
+    enabled: bool = Field(True, description="Whether the marker is capturing")
+    color: Optional[str] = Field(None, description="Hex color used by the Web UI")
+    highlight_duration: Optional[int] = Field(None, description="Web UI highlight duration in milliseconds")
+    capture_node_id: Optional[str] = Field(None, description="Node whose uBridge hosts the marker")
+    direction: Optional[str] = Field(None, description="'tx' or 'rx', null for both directions")
+    data_link_type: Optional[str] = Field(None, description="pcap link-layer type of the capture file")
+    inherited_from: Optional[str] = Field(None, description="Project marker definition this marker was copied from")
+
+
+class ProjectMarker(Marker):
+    """
+    A marker in the project-wide aggregation, with the link and node it belongs to.
+    """
+
+    link_id: str
+    node_id: Optional[str] = None
+
+
+class MarkerDefinition(BaseModel):
+    """
+    A project-level marker definition inherited by every link.
+    """
+
+    bpf: str = Field(..., description="libpcap BPF expression")
+    tag: Optional[int] = Field(None, description="Correlation id shared by markers replayed together")
+    direction: Optional[str] = Field(None, description="'tx' or 'rx', null for both directions")
+    color: Optional[str] = Field(None, description="Hex color used by the Web UI")
+    highlight_duration: Optional[int] = Field(None, description="Web UI highlight duration in milliseconds")
+    data_link_type: Optional[str] = Field(None, description="pcap link-layer type of inherited markers")
+    paused: bool = Field(False, description="Whether the inherited markers are paused")
+
+
+class MarkerDefinitionWithLinks(MarkerDefinition):
+    """
+    A project-level marker definition with the links currently carrying a copy of it.
+    """
+
+    link_ids: List[str] = Field(..., description="Links carrying an inherited copy of the definition")
+
+
+class LinkWiresharkRestart(BaseModel):
+    """
+    Result of restarting the Wireshark window of a link capture.
+    """
+
+    status: str
+
+
+class LinkFilterParameter(BaseModel):
+    """
+    A parameter of a packet filter.
+    """
+
+    name: str
+    type: str
+    minimum: Optional[int] = None
+    maximum: Optional[int] = None
+    unit: Optional[str] = None
+
+
+class LinkFilterInfo(BaseModel):
+    """
+    A packet filter that can be applied to a link.
+    """
+
+    type: str = Field(..., description="Filter identifier used as key in the link 'filters' property")
+    name: str
+    description: str
+    parameters: List[LinkFilterParameter]
diff --git a/gns3server/schemas/controller/marker_replay.py b/gns3server/schemas/controller/marker_replay.py
new file mode 100644
index 000000000..a07d31cd3
--- /dev/null
+++ b/gns3server/schemas/controller/marker_replay.py
@@ -0,0 +1,114 @@
+#
+# Copyright (C) 2026 GNS3 Technologies Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from typing import List, Optional
+
+from pydantic import BaseModel, ConfigDict, Field
+
+
+class ReplaySource(BaseModel):
+    """
+    A capture source (one marker pcap) of a replay tag.
+    """
+
+    node_id: str
+    link_id: str
+    marker: str
+    data_link_type: str
+    count: int = Field(..., description="Total frames in the capture, unaffected by filters")
+
+
+class ReplayFrame(BaseModel):
+    """
+    One frame of the merged replay timeline.
+    """
+
+    ts: str = Field(..., description="Timestamp string to send back unchanged")
+    len: int = Field(..., description="Captured length in bytes")
+    node_id: str
+    link_id: str
+    marker: str
+    frame_number: int = Field(..., description="1-based frame number in the source pcap")
+    src: Optional[str] = None
+    dst: Optional[str] = None
+    proto: Optional[str] = None
+    info: Optional[str] = None
+    bg: Optional[str] = Field(None, description="Wireshark coloring rule background")
+    fg: Optional[str] = Field(None, description="Wireshark coloring rule foreground")
+
+
+class ReplayTimeline(BaseModel):
+    """
+    Replay timeline of a tag.
+    """
+
+    tag: int
+    start: Optional[str] = Field(None, description="Timestamp of the first matching frame")
+    end: Optional[str] = Field(None, description="Timestamp of the last matching frame")
+    frame_count: int
+    sources: List[ReplaySource]
+    frames: List[ReplayFrame]
+
+
+class ReplayFrames(BaseModel):
+    """
+    Frames of a replay time window.
+    """
+
+    frames: List[ReplayFrame]
+
+
+class ReplayFrameSource(BaseModel):
+    """
+    The source pcap and frame a decoded frame comes from.
+    """
+
+    node_id: str
+    link_id: str
+    marker: str
+    frame_number: int
+
+
+class ReplayTreeNode(BaseModel):
+    """
+    A node of the decoded protocol tree.
+
+    Keys sharkd adds in the future are passed through unchanged.
+    """
+
+    model_config = ConfigDict(extra="allow")
+
+    element: Optional[str] = Field(None, description="Node type")
+    label: Optional[str] = Field(None, description="Display text")
+    name: Optional[str] = Field(None, description="Field name, e.g. 'ip.ttl'")
+    filter_expr: Optional[str] = Field(None, description="Display filter with the value baked in")
+    pos: Optional[int] = Field(None, description="Byte offset for hex highlighting")
+    size: Optional[int] = Field(None, description="Byte length for hex highlighting")
+    expert: Optional[str] = Field(None, description="Expert severity")
+    generated: Optional[bool] = Field(None, description="Generated by Wireshark")
+    children: Optional[List["ReplayTreeNode"]] = Field(None, description="Nested fields")
+
+
+class ReplayFrameDetail(BaseModel):
+    """
+    One decoded frame.
+    """
+
+    ts: str
+    source: ReplayFrameSource
+    field_count: int
+    hex: str = Field(..., description="Raw frame bytes as hex")
+    tree: List[ReplayTreeNode]
diff --git a/gns3server/schemas/controller/projects.py b/gns3server/schemas/controller/projects.py
index 1b84b5586..138fd71ea 100644
--- a/gns3server/schemas/controller/projects.py
+++ b/gns3server/schemas/controller/projects.py
@@ -127,3 +127,15 @@ class ProjectCompression(str, Enum):
     bzip2 = "bzip2"
     lzma = "lzma"
     zstd = "zstd"
+
+
+class ProjectStats(BaseModel):
+    """
+    Project object counts.
+    """
+
+    nodes: int
+    links: int
+    drawings: int
+    snapshots: int
+    markers: int
diff --git a/gns3server/schemas/controller/rbac.py b/gns3server/schemas/controller/rbac.py
index e02a46180..60ff78e96 100644
--- a/gns3server/schemas/controller/rbac.py
+++ b/gns3server/schemas/controller/rbac.py
@@ -109,3 +109,13 @@ class Role(DateTimeModelMixin, RoleBase):
     is_builtin: bool
     privileges: List[Privilege]
     model_config = ConfigDict(from_attributes=True)
+
+
+class ACEEndpoint(BaseModel):
+    """
+    An endpoint that can be used in an ACL entry.
+    """
+
+    endpoint: str = Field(..., description="Endpoint path to use as the ACE path")
+    name: str = Field(..., description="Human readable name of the endpoint")
+    endpoint_type: str = Field(..., description="Kind of resource the endpoint refers to")
diff --git a/gns3server/schemas/controller/statistics.py b/gns3server/schemas/controller/statistics.py
new file mode 100644
index 000000000..14ec8bc6d
--- /dev/null
+++ b/gns3server/schemas/controller/statistics.py
@@ -0,0 +1,131 @@
+#
+# Copyright (C) 2026 GNS3 Technologies Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from typing import Dict, List, Optional, Union
+
+from pydantic import BaseModel, Field
+
+
+class ComputeStatistics(BaseModel):
+    """
+    Resource usage reported by a compute.
+
+    Fields come from the compute itself, so a compute running another build
+    may omit some of them.
+    """
+
+    memory_total: Optional[int] = None
+    memory_free: Optional[int] = None
+    memory_used: Optional[int] = None
+    swap_total: Optional[int] = None
+    swap_free: Optional[int] = None
+    swap_used: Optional[int] = None
+    cpu_usage_percent: Optional[int] = None
+    cpu_count: Optional[int] = None
+    cpu_count_physical: Optional[int] = None
+    cpu_model: Optional[str] = None
+    memory_usage_percent: Optional[int] = None
+    swap_usage_percent: Optional[int] = None
+    disk_usage_percent: Optional[int] = None
+    disk_total: Optional[int] = None
+    disk_used: Optional[int] = None
+    disk_free: Optional[int] = None
+    load_average: Optional[List[float]] = None
+    load_average_percent: Optional[List[float]] = None
+
+
+class ComputeStatisticsEntry(BaseModel):
+    """
+    Statistics of one compute.
+    """
+
+    compute_id: str
+    compute_name: str
+    statistics: ComputeStatistics
+
+
+class ProjectCountStatistics(BaseModel):
+    """
+    Project counts by status.
+    """
+
+    total: int
+    opened: int
+    closed: int
+
+
+class NodeStatistics(BaseModel):
+    """
+    Node counts across all projects.
+    """
+
+    total: int
+    open_project_nodes: int
+    closed_project_nodes: int
+    by_type: Dict[str, int] = Field(..., description="Node count by node type")
+    by_status: Dict[str, int] = Field(..., description="Node count by status, open projects only")
+
+
+class LinkStatistics(BaseModel):
+    """
+    Link counts across all projects.
+    """
+
+    total: int
+    capturing: int
+
+
+class WebWiresharkContainer(BaseModel):
+    """
+    A Web Wireshark container.
+    """
+
+    project_id: str
+    project_name: str
+    container_id: str
+    status: str
+    running: bool
+    active_sessions: Optional[int] = None
+    memory_limit: Optional[str] = None
+    cpu_limit: Optional[str] = None
+    pids_limit: Optional[Union[int, str]] = Field(None, description="Process limit, or 'unlimited'")
+    memory: Optional[str] = Field(None, description="Current memory usage")
+    cpu: Optional[str] = Field(None, description="Current CPU usage")
+    pids: Optional[int] = Field(None, description="Current process count")
+
+
+class WebWiresharkStatistics(BaseModel):
+    """
+    Web Wireshark container statistics across all opened projects.
+    """
+
+    total_containers: int
+    running_containers: int
+    active_sessions: int
+    containers: List[WebWiresharkContainer]
+
+
+class ServerStatistics(BaseModel):
+    """
+    Server statistics.
+    """
+
+    uptime_seconds: int
+    computes: List[ComputeStatisticsEntry]
+    projects: ProjectCountStatistics
+    nodes: NodeStatistics
+    links: LinkStatistics
+    webwireshark: WebWiresharkStatistics
diff --git a/gns3server/schemas/controller/symbols.py b/gns3server/schemas/controller/symbols.py
new file mode 100644
index 000000000..75f9e9f31
--- /dev/null
+++ b/gns3server/schemas/controller/symbols.py
@@ -0,0 +1,37 @@
+#
+# Copyright (C) 2026 GNS3 Technologies Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from pydantic import BaseModel
+
+
+class SymbolInfo(BaseModel):
+    """
+    A symbol available on the controller.
+    """
+
+    symbol_id: str
+    filename: str
+    theme: str
+    builtin: bool
+
+
+class SymbolDimensions(BaseModel):
+    """
+    Symbol dimensions in pixels.
+    """
+
+    width: int
+    height: int
diff --git a/gns3server/schemas/controller/tokens.py b/gns3server/schemas/controller/tokens.py
index 1ecd6545a..7b8841b55 100644
--- a/gns3server/schemas/controller/tokens.py
+++ b/gns3server/schemas/controller/tokens.py
@@ -15,6 +15,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 from typing import Optional
+from uuid import UUID
 
 from pydantic import BaseModel
 
@@ -43,3 +44,30 @@ class ApiKeyCreate(BaseModel):
     """Schema for creating a new API key."""
 
     name: str
+
+
+class ApiKey(BaseModel):
+    """API key metadata. The secret is never returned after creation."""
+
+    api_key_id: UUID
+    name: str
+    key_prefix: str
+    created_at: Optional[str] = None
+    last_used_at: Optional[str] = None
+    revoked: bool
+
+
+class ApiKeyCreated(BaseModel):
+    """A newly created API key. The full key is returned only once."""
+
+    api_key_id: UUID
+    api_key: str
+    name: str
+    key_prefix: str
+    created_at: Optional[str] = None
+
+
+class ApiKeyMessage(BaseModel):
+    """Confirmation message returned when an API key is revoked or restored."""
+
+    message: str
diff --git a/tests/api/routes/controller/test_appliances.py b/tests/api/routes/controller/test_appliances.py
index 193557e35..e2b853f5f 100644
--- a/tests/api/routes/controller/test_appliances.py
+++ b/tests/api/routes/controller/test_appliances.py
@@ -105,7 +105,7 @@ class TestApplianceRoutes:
     async def test_add_v8_version_appliance(self, app: FastAPI, client: AsyncClient) -> None:
 
         appliance_id = "1cfdf900-7c30-4cb7-8f03-3f61d2581633"  # Empty VM appliance
-        new_version = {"name": "v8-99G", "category": "guest", "images": {"hda_disk_image": "empty99G.qcow2"}}
+        new_version = {"name": "v8-99G", "images": {"hda_disk_image": "empty99G.qcow2"}}
         response = await client.post(
             app.url_path_for("add_appliance_version", appliance_id=appliance_id), json=new_version
         )
diff --git a/tests/api/routes/controller/test_links.py b/tests/api/routes/controller/test_links.py
index 54830923b..14e5b9699 100644
--- a/tests/api/routes/controller/test_links.py
+++ b/tests/api/routes/controller/test_links.py
@@ -648,12 +648,12 @@ class TestLinkRoutes:
         assert "LinkFilters" not in schemas
         filters_property = schemas["Link"]["properties"]["filters"]
         assert filters_property["anyOf"][0] == {"additionalProperties": True, "type": "object"}
-        assert schemas["LinkFilterDefinition"]["properties"]["parameters"]["items"] == {
+        assert schemas["LinkFilterInfo"]["properties"]["parameters"]["items"] == {
             "$ref": "#/components/schemas/LinkFilterParameter"
         }
         path = "/v3/projects/{project_id}/links/{link_id}/available_filters"
         responses = app.openapi()["paths"][path]["get"]["responses"]["200"]["content"]["application/json"]["schema"]
-        assert responses["items"] == {"$ref": "#/components/schemas/LinkFilterDefinition"}
+        assert responses["items"] == {"$ref": "#/components/schemas/LinkFilterInfo"}
 
     async def test_get_udp_interface(self, app: FastAPI, client: AsyncClient, project: Project) -> None:
         """
diff --git a/tests/api/routes/controller/test_markers.py b/tests/api/routes/controller/test_markers.py
index b53ec8533..bc4fecf30 100644
--- a/tests/api/routes/controller/test_markers.py
+++ b/tests/api/routes/controller/test_markers.py
@@ -19,6 +19,8 @@ HTTP-route tests for the traffic-insight marker endpoints: per-link markers,
 project-level definitions, and the project-wide aggregation view.
 """
 
+from unittest.mock import DEFAULT
+
 import pytest
 from fastapi import FastAPI, status
 from httpx import AsyncClient
@@ -43,6 +45,25 @@ def _inherited(link, name="arp"):
     }
 
 
+def _record_marker(link):
+    """Side effect for a mocked ``start_marker`` that stores the marker like the real one does."""
+
+    def side_effect(*, name, bpf, tag=None, color=None, highlight_duration=None, direction=None, **kwargs):
+        link._markers[name] = {
+            "bpf": bpf,
+            "tag": tag,
+            "enabled": True,
+            "color": color,
+            "highlight_duration": highlight_duration,
+            "capture_node_id": "node-id",
+            "direction": direction,
+            "data_link_type": kwargs.get("data_link_type", "DLT_EN10MB"),
+        }
+        return DEFAULT
+
+    return side_effect
+
+
 class TestMarkerRoutes:
     # -----------------------------------------------------------------------
     # Per-link markers
@@ -53,13 +74,25 @@ class TestMarkerRoutes:
         link = UDPLink(project)
         project._links = {link.id: link}
 
-        with asyncio_patch("gns3server.controller.udp_link.UDPLink.start_marker") as mock:
+        with asyncio_patch(
+            "gns3server.controller.udp_link.UDPLink.start_marker", side_effect=_record_marker(link)
+        ) as mock:
             response = await client.post(
                 app.url_path_for("create_marker", project_id=project.id, link_id=link.id),
                 json={"bpf": "icmp", "tag": 3, "color": "#ff5722", "highlight_duration": 800},
             )
 
         assert response.status_code == status.HTTP_201_CREATED
+        assert response.json() == {
+            "bpf": "icmp",
+            "tag": 3,
+            "enabled": True,
+            "color": "#ff5722",
+            "highlight_duration": 800,
+            "capture_node_id": "node-id",
+            "direction": None,
+            "data_link_type": "DLT_EN10MB",
+        }
         mock.assert_called_once()
         _, kwargs = mock.call_args
         assert kwargs["bpf"] == "icmp"
@@ -73,12 +106,15 @@ class TestMarkerRoutes:
         link = UDPLink(project)
         project._links = {link.id: link}
 
-        with asyncio_patch("gns3server.controller.udp_link.UDPLink.start_marker") as mock:
+        with asyncio_patch(
+            "gns3server.controller.udp_link.UDPLink.start_marker", side_effect=_record_marker(link)
+        ) as mock:
             response = await client.post(
                 app.url_path_for("create_marker", project_id=project.id, link_id=link.id),
                 json={"name": "web", "bpf": "tcp port 80"},
             )
         assert response.status_code == status.HTTP_201_CREATED
+        assert response.json()["bpf"] == "tcp port 80"
         _, kwargs = mock.call_args
         assert kwargs["name"] == "web"
 
@@ -141,6 +177,16 @@ class TestMarkerRoutes:
     async def test_update_marker(self, app: FastAPI, client: AsyncClient, project: Project) -> None:
 
         link = UDPLink(project)
+        link._markers["web"] = {
+            "bpf": "udp port 53",
+            "tag": None,
+            "enabled": True,
+            "color": None,
+            "highlight_duration": 1500,
+            "capture_node_id": "node-id",
+            "direction": None,
+            "data_link_type": "DLT_EN10MB",
+        }
         project._links = {link.id: link}
 
         with asyncio_patch("gns3server.controller.udp_link.UDPLink.update_marker") as mock:
@@ -149,6 +195,7 @@ class TestMarkerRoutes:
                 json={"bpf": "udp port 53", "highlight_duration": 1500},
             )
         assert response.status_code == status.HTTP_200_OK
+        assert response.json() == link._markers["web"]
         _, kwargs = mock.call_args
         assert kwargs["bpf"] == "udp port 53"
         assert kwargs["highlight_duration"] == 1500
@@ -195,12 +242,27 @@ class TestMarkerRoutes:
 
     async def test_create_marker_definition(self, app: FastAPI, client: AsyncClient, project: Project) -> None:
 
-        with asyncio_patch("gns3server.controller.project.Project.create_marker_definition") as mock:
+        def store_definition(*, name, bpf, highlight_duration=None, **kwargs):
+            project._marker_definitions[name] = {
+                "bpf": bpf,
+                "tag": None,
+                "direction": None,
+                "color": None,
+                "highlight_duration": highlight_duration,
+                "data_link_type": "DLT_EN10MB",
+                "paused": False,
+            }
+            return DEFAULT
+
+        with asyncio_patch(
+            "gns3server.controller.project.Project.create_marker_definition", side_effect=store_definition
+        ) as mock:
             response = await client.post(
                 app.url_path_for("create_marker_definition", project_id=project.id),
                 json={"name": "arp", "bpf": "arp", "highlight_duration": 1200},
             )
         assert response.status_code == status.HTTP_201_CREATED
+        assert response.json() == project._marker_definitions["arp"]
         _, kwargs = mock.call_args
         assert kwargs["name"] == "arp"
         assert kwargs["bpf"] == "arp"
@@ -220,12 +282,15 @@ class TestMarkerRoutes:
 
     async def test_update_marker_definition(self, app: FastAPI, client: AsyncClient, project: Project) -> None:
 
+        project._marker_definitions["arp"] = {"bpf": "arp or rarp", "tag": None, "highlight_duration": 900}
+
         with asyncio_patch("gns3server.controller.project.Project.update_marker_definition") as mock:
             response = await client.put(
                 app.url_path_for("update_marker_definition", project_id=project.id, def_name="arp"),
                 json={"bpf": "arp or rarp", "highlight_duration": 900},
             )
         assert response.status_code == status.HTTP_200_OK
+        assert response.json() == {"bpf": "arp or rarp", "tag": None, "highlight_duration": 900}
         _, kwargs = mock.call_args
         assert kwargs["bpf"] == "arp or rarp"
         assert kwargs["highlight_duration"] == 900
diff --git a/tests/api/routes/controller/test_response_models.py b/tests/api/routes/controller/test_response_models.py
new file mode 100644
index 000000000..9ea0f6dda
--- /dev/null
+++ b/tests/api/routes/controller/test_response_models.py
@@ -0,0 +1,464 @@
+#
+# Copyright (C) 2026 GNS3 Technologies Inc.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+"""
+Runtime JSON shape of the endpoints that used to return untyped objects, and
+the OpenAPI contract that now describes them.
+"""
+
+import uuid
+from unittest.mock import AsyncMock, MagicMock, patch
+
+import pytest
+from fastapi import FastAPI, status
+from httpx import AsyncClient
+
+from gns3server.controller import Controller, marker_replay
+from gns3server.controller.link import Link
+from gns3server.controller.project import Project
+from gns3server.controller.udp_link import UDPLink
+from tests.controller.test_marker_replay import _write_pcap
+
+pytestmark = pytest.mark.asyncio
+
+TYPED_OPERATIONS = [
+    ("post", "/v3/access/api-keys"),
+    ("get", "/v3/access/api-keys"),
+    ("post", "/v3/access/api-keys/{api_key_id}/revoke"),
+    ("post", "/v3/access/api-keys/{api_key_id}/restore"),
+    ("get", "/v3/statistics"),
+    ("get", "/v3/projects/{project_id}/stats"),
+    ("post", "/v3/images/install"),
+    ("post", "/v3/appliances/{appliance_id}/version"),
+    ("get", "/v3/projects/{project_id}/markers"),
+    ("get", "/v3/projects/{project_id}/marker-definitions"),
+    ("post", "/v3/projects/{project_id}/marker-definitions"),
+    ("put", "/v3/projects/{project_id}/marker-definitions/{def_name}"),
+    ("get", "/v3/projects/{project_id}/markers/tags/{tag}/replay/range"),
+    ("get", "/v3/projects/{project_id}/markers/tags/{tag}/replay/frames"),
+    ("get", "/v3/projects/{project_id}/markers/tags/{tag}/replay/frame/detail"),
+    ("get", "/v3/projects/{project_id}/links/{link_id}/markers"),
+    ("post", "/v3/projects/{project_id}/links/{link_id}/markers"),
+    ("put", "/v3/projects/{project_id}/links/{link_id}/markers/{marker_name}"),
+    ("get", "/v3/symbols"),
+    ("get", "/v3/symbols/{symbol_id}/dimensions"),
+    ("get", "/v3/symbols/default_symbols"),
+    ("get", "/v3/projects/{project_id}/links/{link_id}/available_filters"),
+    ("post", "/v3/projects/{project_id}/links/{link_id}/capture/wireshark/restart"),
+    ("get", "/v3/projects/{project_id}/nodes/{node_id}/dynamips/auto_idlepc"),
+    ("post", "/v3/computes/{compute_id}/dynamips/auto_idlepc"),
+    ("get", "/v3/gns3vm/engines"),
+    ("get", "/v3/gns3vm/engines/{engine}/vms"),
+    ("get", "/v3/access/acl/endpoints"),
+]
+
+
+def _is_untyped(schema: dict) -> bool:
+    if not schema:
+        return True
+    if "$ref" in schema:
+        return False
+    if schema.get("type") == "array":
+        return _is_untyped(schema.get("items", {}))
+    if schema.get("type") == "object":
+        extra = schema.get("additionalProperties")
+        if "properties" in schema:
+            return False
+        return extra in (None, True, {})
+    for key in ("anyOf", "oneOf"):
+        if key in schema:
+            return any(_is_untyped(s) for s in schema[key] if s.get("type") != "null")
+    return False
+
+
+class TestOpenAPIContract:
+    async def test_no_untyped_success_response(self, app: FastAPI, client: AsyncClient) -> None:
+
+        response = await client.get("/openapi.json")
+        assert response.status_code == status.HTTP_200_OK
+        paths = response.json()["paths"]
+
+        untyped = []
+        for method, path in TYPED_OPERATIONS:
+            operation = paths[path][method]
+            success = [r for code, r in operation["responses"].items() if code.startswith("2") and code != "204"]
+            assert success, f"{method.upper()} {path} declares no success response"
+            for r in success:
+                schema = r["content"]["application/json"]["schema"]
+                if _is_untyped(schema):
+                    untyped.append(f"{method.upper()} {path}")
+        assert not untyped
+
+
+class TestApiKeys:
+    async def _create(self, app: FastAPI, client: AsyncClient, name: str = "ci") -> dict:
+
+        response = await client.post(app.url_path_for("create_api_key"), json={"name": name})
+        assert response.status_code == status.HTTP_201_CREATED
+        return response.json()
+
+    async def test_create(self, app: FastAPI, client: AsyncClient) -> None:
+
+        body = await self._create(app, client, "created")
+        assert set(body) == {"api_key_id", "api_key", "name", "key_prefix", "created_at"}
+        assert body["name"] == "created"
+        assert body["api_key"].startswith(f"gns3_{body['api_key_id']}_")
+        assert body["key_prefix"] == body["api_key"][:8]
+        assert isinstance(body["created_at"], str)
+        uuid.UUID(body["api_key_id"])
+
+    async def test_list(self, app: FastAPI, client: AsyncClient) -> None:
+
+        created = await self._create(app, client, "listed")
+        response = await client.get(app.url_path_for("list_api_keys"))
+        assert response.status_code == status.HTTP_200_OK
+        entry = next(k for k in response.json() if k["api_key_id"] == created["api_key_id"])
+        assert set(entry) == {"api_key_id", "name", "key_prefix", "created_at", "last_used_at", "revoked"}
+        assert entry["name"] == "listed"
+        assert entry["last_used_at"] is None
+        assert entry["revoked"] is False
+        assert entry["created_at"] == created["created_at"]
+
+    async def test_revoke_and_restore(self, app: FastAPI, client: AsyncClient) -> None:
+
+        created = await self._create(app, client, "toggled")
+        key_id = created["api_key_id"]
+
+        response = await client.post(app.url_path_for("revoke_api_key", api_key_id=key_id))
+        assert response.status_code == status.HTTP_200_OK
+        assert response.json() == {"message": "API key 'toggled' revoked"}
+        keys = (await client.get(app.url_path_for("list_api_keys"))).json()
+        assert next(k for k in keys if k["api_key_id"] == key_id)["revoked"] is True
+
+        response = await client.post(app.url_path_for("restore_api_key", api_key_id=key_id))
+        assert response.status_code == status.HTTP_200_OK
+        assert response.json() == {"message": "API key 'toggled' restored"}
+        keys = (await client.get(app.url_path_for("list_api_keys"))).json()
+        assert next(k for k in keys if k["api_key_id"] == key_id)["revoked"] is False
+
+    async def test_revoke_unknown_key(self, app: FastAPI, client: AsyncClient) -> None:
+
+        response = await client.post(app.url_path_for("revoke_api_key", api_key_id=str(uuid.uuid4())))
+        assert response.status_code == status.HTTP_404_NOT_FOUND
+
+
+COMPUTE_STATISTICS = {
+    "memory_total": 8000,
+    "memory_free": 4000,
+    "memory_used": 4000,
+    "swap_total": 1000,
+    "swap_free": 900,
+    "swap_used": 100,
+    "cpu_usage_percent": 12,
+    "cpu_count": 4,
+    "cpu_count_physical": None,
+    "cpu_model": "Test CPU",
+    "memory_usage_percent": 50,
+    "swap_usage_percent": 10,
+    "disk_usage_percent": 30,
+    "disk_total": 100000,
+    "disk_used": 30000,
+    "disk_free": 70000,
+    "load_average": [0.5, 0.4, 0.3],
+    "load_average_percent": [12.5, 10.0, 7.5],
+}
+
+
+class TestStatistics:
+    async def test_statistics_shape(self, app: FastAPI, client: AsyncClient, project: Project) -> None:
+
+        webwireshark = {
+            "total_containers": 1,
+            "running_containers": 1,
+            "active_sessions": 0,
+            "containers": [
+                {
+                    "project_id": project.id,
+                    "project_name": project.name,
+                    "container_id": "abcdef123456",
+                    "status": "running",
+                    "running": True,
+                    "active_sessions": 0,
+                    "memory_limit": "unlimited",
+                    "cpu_limit": "unlimited",
+                    "pids_limit": "unlimited",
+                    "memory": "10MiB / 1GiB",
+                    "cpu": "0.5%",
+                    "pids": 3,
+                },
+                {
+                    "project_id": project.id,
+                    "project_name": project.name,
+                    "container_id": "123456abcdef",
+                    "status": "exited",
+                    "running": False,
+                },
+            ],
+        }
+        with patch(
+            "gns3server.api.routes.controller.controller.collect_webwireshark_stats",
+            new=AsyncMock(return_value=webwireshark),
+        ):
+            response = await client.get(app.url_path_for("statistics"))
+        assert response.status_code == status.HTTP_200_OK
+        body = response.json()
+        assert set(body) == {"uptime_seconds", "computes", "projects", "nodes", "links", "webwireshark"}
+        assert isinstance(body["uptime_seconds"], int)
+        assert body["projects"] == {"total": 1, "opened": 1, "closed": 0}
+        assert body["nodes"] == {
+            "total": 0,
+            "open_project_nodes": 0,
+            "closed_project_nodes": 0,
+            "by_type": {},
+            "by_status": {},
+        }
+        assert body["links"] == {"total": 0, "capturing": 0}
+        assert body["webwireshark"] == webwireshark
+
+    async def test_statistics_compute_entry(
+        self, app: FastAPI, client: AsyncClient, controller: Controller, project: Project
+    ) -> None:
+
+        compute = MagicMock()
+        compute.id = "local"
+        compute.name = "local"
+        reply = MagicMock()
+        reply.json = dict(COMPUTE_STATISTICS)
+        compute.get = AsyncMock(return_value=reply)
+        controller._computes = {"local": compute}
+
+        response = await client.get(app.url_path_for("statistics"))
+        assert response.status_code == status.HTTP_200_OK
+        assert response.json()["computes"] == [
+            {"compute_id": "local", "compute_name": "local", "statistics": COMPUTE_STATISTICS}
+        ]
+
+    async def test_statistics_compute_missing_fields_stay_absent(
+        self, app: FastAPI, client: AsyncClient, controller: Controller, project: Project
+    ) -> None:
+
+        compute = MagicMock()
+        compute.id = "old"
+        compute.name = "old"
+        reply = MagicMock()
+        reply.json = {"memory_total": 8000, "cpu_count": 2}
+        compute.get = AsyncMock(return_value=reply)
+        controller._computes = {"old": compute}
+
+        response = await client.get(app.url_path_for("statistics"))
+        assert response.status_code == status.HTTP_200_OK
+        assert response.json()["computes"][0]["statistics"] == {"memory_total": 8000, "cpu_count": 2}
+
+    async def test_project_stats(self, app: FastAPI, client: AsyncClient, project: Project) -> None:
+
+        link = UDPLink(project)
+        link._markers["a"] = {"bpf": "icmp"}
+        link._markers["b"] = {"bpf": "arp"}
+        project._links = {link.id: link}
+
+        response = await client.get(app.url_path_for("get_project_stats", project_id=project.id))
+        assert response.status_code == status.HTTP_200_OK
+        assert response.json() == {"nodes": 0, "links": 1, "drawings": 0, "snapshots": 0, "markers": 2}
+
+
+class TestSymbols:
+    async def test_list_shape(self, app: FastAPI, client: AsyncClient) -> None:
+
+        response = await client.get(app.url_path_for("get_symbols"))
+        assert response.status_code == status.HTTP_200_OK
+        symbols = response.json()
+        assert symbols
+        for symbol in symbols:
+            assert set(symbol) == {"symbol_id", "filename", "theme", "builtin"}
+            assert isinstance(symbol["builtin"], bool)
+
+    async def test_default_symbols(self, app: FastAPI, client: AsyncClient) -> None:
+
+        response = await client.get(app.url_path_for("get_default_symbols"))
+        assert response.status_code == status.HTTP_200_OK
+        themes = response.json()
+        assert themes["Classic"]["firewall"] == ":/symbols/classic/firewall.svg"
+        assert themes == Controller.instance().symbols.default_symbols()
+
+    async def test_dimensions(self, app: FastAPI, client: AsyncClient) -> None:
+
+        response = await client.get(
+            app.url_path_for("get_symbol_dimensions", symbol_id=":/symbols/classic/firewall.svg")
+        )
+        assert response.status_code == status.HTTP_200_OK
+        body = response.json()
+        assert set(body) == {"width", "height"}
+        assert isinstance(body["width"], int)
+        assert isinstance(body["height"], int)
+
+
+class TestLinkRoutes:
+    async def test_wireshark_restart(self, app: FastAPI, client: AsyncClient, project: Project) -> None:
+
+        link = Link(project)
+        project._links = {link.id: link}
+        with patch("gns3server.controller.link.Link._restart_web_wireshark", new=AsyncMock()):
+            response = await client.post(app.url_path_for("restart_wireshark", project_id=project.id, link_id=link.id))
+        assert response.status_code == status.HTTP_200_OK
+        assert response.json() == {"status": "restarted"}
+
+    async def test_available_filters_keep_optional_parameter_keys_absent(
+        self, app: FastAPI, client: AsyncClient, project: Project
+    ) -> None:
+
+        link = Link(project)
+        project._links = {link.id: link}
+        with patch.object(Link, "_get_filter_node", return_value=object()):
+            response = await client.get(app.url_path_for("get_filters", project_id=project.id, link_id=link.id))
+        assert response.status_code == status.HTTP_200_OK
+        by_type = {f["type"]: f for f in response.json()}
+        assert by_type["bpf"]["parameters"] == [{"name": "Filters", "type": "text"}]
+        assert by_type["delay"]["parameters"][0] == {
+            "name": "Latency",
+            "minimum": 1,
+            "maximum": 32767,
+            "unit": "ms",
+            "type": "int",
+        }
+
+    async def test_link_markers_keep_missing_keys_absent(
+        self, app: FastAPI, client: AsyncClient, project: Project
+    ) -> None:
+
+        link = UDPLink(project)
+        link._markers["legacy"] = {"bpf": "icmp", "tag": 1, "enabled": True}
+        link._markers["global-arp"] = {"bpf": "arp", "inherited_from": "arp", "capture_node_id": "n1"}
+        project._links = {link.id: link}
+
+        response = await client.get(app.url_path_for("get_markers", project_id=project.id, link_id=link.id))
+        assert response.status_code == status.HTTP_200_OK
+        assert response.json() == link._markers
+
+
+class TestMarkerAggregation:
+    async def test_project_markers_and_definitions(self, app: FastAPI, client: AsyncClient, project: Project) -> None:
+
+        link = UDPLink(project)
+        link._markers["web"] = {
+            "bpf": "tcp port 80",
+            "tag": 4,
+            "enabled": False,
+            "color": "#ff5722",
+            "highlight_duration": 800,
+            "capture_node_id": "n1",
+            "direction": "tx",
+            "data_link_type": "DLT_EN10MB",
+        }
+        link._markers["global-arp"] = {
+            "bpf": "arp",
+            "tag": None,
+            "enabled": True,
+            "color": None,
+            "highlight_duration": None,
+            "capture_node_id": "n1",
+            "direction": None,
+            "data_link_type": "DLT_EN10MB",
+            "inherited_from": "arp",
+        }
+        project._links = {link.id: link}
+        project._marker_definitions = {
+            "arp": {
+                "bpf": "arp",
+                "tag": None,
+                "direction": None,
+                "color": None,
+                "highlight_duration": None,
+                "data_link_type": "DLT_EN10MB",
+                "paused": False,
+            },
+            "old": {"bpf": "icmp", "tag": 5},
+        }
+
+        response = await client.get(app.url_path_for("get_project_markers", project_id=project.id))
+        assert response.status_code == status.HTTP_200_OK
+        assert response.json() == {
+            f"{link.id}/web": {**link._markers["web"], "link_id": link.id, "node_id": "n1"},
+            f"{link.id}/global-arp": {**link._markers["global-arp"], "link_id": link.id, "node_id": "n1"},
+        }
+
+        response = await client.get(app.url_path_for("get_marker_definitions", project_id=project.id))
+        assert response.status_code == status.HTTP_200_OK
+        assert response.json() == {
+            "arp": {**project._marker_definitions["arp"], "link_ids": [link.id]},
+            "old": {"bpf": "icmp", "tag": 5, "link_ids": []},
+        }
+
+
+class TestReplayFrameDetail:
+    async def test_frame_detail_passes_unknown_tree_keys_through(
+        self, app: FastAPI, client: AsyncClient, project: Project, monkeypatch
+    ) -> None:
+
+        detail = {
+            "ts": "1693472000.000000",
+            "source": {"node_id": "n1", "link_id": "l1", "marker": "icmp", "frame_number": 1},
+            "field_count": 3,
+            "hex": "0200",
+            "tree": [
+                {
+                    "element": "proto",
+                    "label": "Internet Protocol",
+                    "name": "ip",
+                    "filter_expr": "ip",
+                    "pos": 14,
+                    "size": 20,
+                    "children": [{"label": "TTL: 64", "name": "ip.ttl", "expert": "Chat", "generated": True}],
+                    "future_key": {"a": 1},
+                }
+            ],
+        }
+        monkeypatch.setattr(marker_replay, "decode_frame", AsyncMock(return_value=detail))
+
+        response = await client.get(
+            app.url_path_for("replay_tag_frame_detail", project_id=project.id, tag=7),
+            params={"ts": "1693472000.000000", "node_id": "n1", "link_id": "l1", "marker": "icmp"},
+        )
+        assert response.status_code == status.HTTP_200_OK
+        assert response.json() == detail
+
+    async def test_range_empty_timeline(self, app: FastAPI, client: AsyncClient, project: Project) -> None:
+
+        link = UDPLink(project)
+        link._markers["icmp"] = {
+            "bpf": "icmp",
+            "tag": 9,
+            "enabled": False,
+            "color": None,
+            "highlight_duration": None,
+            "capture_node_id": "n1",
+            "direction": None,
+            "data_link_type": "DLT_EN10MB",
+        }
+        project._links = {link.id: link}
+        _write_pcap(f"{project.markers_directory}/n1_{link.id}_icmp.pcap", [])
+
+        response = await client.get(app.url_path_for("replay_tag_range", project_id=project.id, tag=9))
+        assert response.status_code == status.HTTP_200_OK
+        assert response.json() == {
+            "tag": 9,
+            "start": None,
+            "end": None,
+            "frame_count": 0,
+            "sources": [
+                {"node_id": "n1", "link_id": link.id, "marker": "icmp", "data_link_type": "DLT_EN10MB", "count": 0}
+            ],
+            "frames": [],
+        }