diff --git a/gns3server/api/routes/controller/projects.py b/gns3server/api/routes/controller/projects.py
index b8797e3c..9df7b9be 100644
--- a/gns3server/api/routes/controller/projects.py
+++ b/gns3server/api/routes/controller/projects.py
@@ -30,7 +30,7 @@ import logging
 
 log = logging.getLogger()
 
-from fastapi import APIRouter, Depends, Request, Response, Body, HTTPException, status, WebSocket, WebSocketDisconnect
+from fastapi import APIRouter, Depends, Request, Body, HTTPException, status, WebSocket, WebSocketDisconnect
 from fastapi.encoders import jsonable_encoder
 from fastapi.responses import StreamingResponse, FileResponse
 from websockets.exceptions import ConnectionClosed, WebSocketException
@@ -395,6 +395,15 @@ async def duplicate_project(
     return new_project.asdict()
 
 
+@router.get("/{project_id}/locked")
+async def locked_project(project: Project = Depends(dep_project)) -> dict:
+    """
+    Returns whether a project is locked or not
+    """
+
+    return {"result": project.locked}
+
+
 @router.post("/{project_id}/lock", status_code=status.HTTP_204_NO_CONTENT)
 async def lock_project(project: Project = Depends(dep_project)) -> None:
     """
diff --git a/gns3server/controller/project.py b/gns3server/controller/project.py
index 37446cae..7107429a 100644
--- a/gns3server/controller/project.py
+++ b/gns3server/controller/project.py
@@ -1144,6 +1144,21 @@ class Project:
                 self.emit_notification("node.updated", node.asdict())
         self.dump()
 
+    @property
+    @open_required
+    def locked(self):
+        """
+        Check if all items in a project are locked and not
+        """
+
+        for drawing in self._drawings.values():
+            if not drawing.locked:
+                return False
+        for node in self.nodes.values():
+            if not node.locked:
+                return False
+        return True
+
     def dump(self):
         """
         Dump topology to disk
diff --git a/tests/api/routes/controller/test_projects.py b/tests/api/routes/controller/test_projects.py
index e94cc8fc..7b392742 100644
--- a/tests/api/routes/controller/test_projects.py
+++ b/tests/api/routes/controller/test_projects.py
@@ -511,6 +511,10 @@ async def test_lock_unlock(app: FastAPI, client: AsyncClient, project: Project,
     for node in project.nodes.values():
         assert node.locked is True
 
+    response = await client.get(app.url_path_for("locked_project", project_id=project.id))
+    assert response.status_code == status.HTTP_200_OK
+    assert response.json()["result"] is True
+
     response = await client.post(app.url_path_for("unlock_project", project_id=project.id))
     assert response.status_code == status.HTTP_204_NO_CONTENT