diff --git a/flexmeasures/api/__init__.py b/flexmeasures/api/__init__.py
index ef838271c..32b008f51 100644
--- a/flexmeasures/api/__init__.py
+++ b/flexmeasures/api/__init__.py
@@ -105,9 +105,11 @@ def register_at(app: Flask):
     from flexmeasures.api.v1_2 import register_at as v1_2_register_at
     from flexmeasures.api.v1_3 import register_at as v1_3_register_at
     from flexmeasures.api.v2_0 import register_at as v2_0_register_at
+    from flexmeasures.api.dev import register_at as dev_register_at
 
     v1_register_at(app)
     v1_1_register_at(app)
     v1_2_register_at(app)
     v1_3_register_at(app)
     v2_0_register_at(app)
+    dev_register_at(app)
diff --git a/flexmeasures/api/dev/__init__.py b/flexmeasures/api/dev/__init__.py
new file mode 100644
index 000000000..c175be741
--- /dev/null
+++ b/flexmeasures/api/dev/__init__.py
@@ -0,0 +1,9 @@
+from flask import Flask
+
+
+def register_at(app: Flask):
+    """This can be used to register FlaskViews."""
+
+    from flexmeasures.api.dev.sensors import SensorAPI
+
+    SensorAPI.register(app, route_prefix="/api/dev")
diff --git a/flexmeasures/api/dev/sensors.py b/flexmeasures/api/dev/sensors.py
new file mode 100644
index 000000000..a28e44e1c
--- /dev/null
+++ b/flexmeasures/api/dev/sensors.py
@@ -0,0 +1,73 @@
+from flask_classful import FlaskView, route
+from flask_login import login_required
+from flask_security import roles_required
+from marshmallow import fields
+from webargs.flaskparser import use_kwargs
+from werkzeug.exceptions import abort
+
+from flexmeasures.api.common.schemas.times import AwareDateTimeField
+from flexmeasures.data.models.time_series import Sensor
+
+
+class SensorAPI(FlaskView):
+    """
+    This view exposes sensor attributes through API endpoints under development.
+    These endpoints are not yet part of our official API, but support the FlexMeasures UI.
+    """
+
+    route_base = "/sensor"
+
+    @login_required
+    @roles_required("admin")  # todo: remove after we check for sensor ownership
+    @route("/<id>/chart/")
+    @use_kwargs(
+        {
+            "event_starts_after": AwareDateTimeField(format="iso", required=False),
+            "event_ends_before": AwareDateTimeField(format="iso", required=False),
+            "beliefs_after": AwareDateTimeField(format="iso", required=False),
+            "beliefs_before": AwareDateTimeField(format="iso", required=False),
+            "include_data": fields.Boolean(required=False),
+            "as_html": fields.Boolean(required=False),
+            "dataset_name": fields.Str(required=False),
+        },
+        location="query",
+    )
+    def get_chart(self, id, **kwargs):
+        """GET from /sensor/<id>/chart"""
+        sensor = get_sensor_or_abort(id)
+        return sensor.chart(**kwargs)
+
+    @login_required
+    @roles_required("admin")  # todo: remove after we check for sensor ownership
+    @route("/<id>/chart_data/")
+    @use_kwargs(
+        {
+            "event_starts_after": AwareDateTimeField(format="iso", required=False),
+            "event_ends_before": AwareDateTimeField(format="iso", required=False),
+            "beliefs_after": AwareDateTimeField(format="iso", required=False),
+            "beliefs_before": AwareDateTimeField(format="iso", required=False),
+        },
+        location="query",
+    )
+    def get_chart_data(self, id, **kwargs):
+        """GET from /sensor/<id>/chart_data
+
+        Data for use in charts (in case you have the chart specs already).
+        """
+        sensor = get_sensor_or_abort(id)
+        return sensor.search_beliefs(as_json=True, **kwargs)
+
+    @login_required
+    @roles_required("admin")  # todo: remove after we check for sensor ownership
+    def get(self, id: int):
+        """GET from /sensor/<id>"""
+        sensor = get_sensor_or_abort(id)
+        attributes = ["name", "timezone", "timerange"]
+        return {attr: getattr(sensor, attr) for attr in attributes}
+
+
+def get_sensor_or_abort(id: int) -> Sensor:
+    sensor = Sensor.query.filter(Sensor.id == id).one_or_none()
+    if sensor is None:
+        raise abort(404, f"Sensor {id} not found")
+    return sensor
diff --git a/flexmeasures/ui/__init__.py b/flexmeasures/ui/__init__.py
index 2107e5755..6348aa578 100644
--- a/flexmeasures/ui/__init__.py
+++ b/flexmeasures/ui/__init__.py
@@ -33,12 +33,11 @@ def register_at(app: Flask):
 
     from flexmeasures.ui.crud.assets import AssetCrudUI
     from flexmeasures.ui.crud.users import UserCrudUI
-    from flexmeasures.ui.views.sensors import SensorUI, SensorAPI
+    from flexmeasures.ui.views.sensors import SensorUI
 
     AssetCrudUI.register(app)
     UserCrudUI.register(app)
     SensorUI.register(app)
-    SensorAPI.register(app)
 
     import flexmeasures.ui.views  # noqa: F401 this is necessary to load the views
 
diff --git a/flexmeasures/ui/views/sensors.py b/flexmeasures/ui/views/sensors.py
index ffaa28f90..5be5e1763 100644
--- a/flexmeasures/ui/views/sensors.py
+++ b/flexmeasures/ui/views/sensors.py
@@ -1,11 +1,10 @@
-from flask import abort
 from flask_classful import FlaskView, route
 from flask_security import login_required, roles_required
 from marshmallow import fields
 from webargs.flaskparser import use_kwargs
 
 from flexmeasures.api.common.schemas.times import AwareDateTimeField
-from flexmeasures.data.models.time_series import Sensor
+from flexmeasures.api.dev.sensors import SensorAPI
 from flexmeasures.ui.utils.view_utils import render_flexmeasures_template
 
 
@@ -44,67 +43,3 @@ def get(self, id: int):
             sensor_id=id,
             msg="",
         )
-
-
-class SensorAPI(FlaskView):
-    """
-    This view exposes sensor attributes through API endpoints under development.
-    These endpoints are not yet part of our official API, but support the FlexMeasures UI.
-    """
-
-    route_base = "/sensor"
-
-    @login_required
-    @roles_required("admin")  # todo: remove after we check for sensor ownership
-    @route("/<id>/chart/")
-    @use_kwargs(
-        {
-            "event_starts_after": AwareDateTimeField(format="iso", required=False),
-            "event_ends_before": AwareDateTimeField(format="iso", required=False),
-            "beliefs_after": AwareDateTimeField(format="iso", required=False),
-            "beliefs_before": AwareDateTimeField(format="iso", required=False),
-            "include_data": fields.Boolean(required=False),
-            "as_html": fields.Boolean(required=False),
-            "dataset_name": fields.Str(required=False),
-        },
-        location="query",
-    )
-    def get_chart(self, id, **kwargs):
-        """GET from /sensor/<id>/chart"""
-        sensor = get_sensor_or_abort(id)
-        return sensor.chart(**kwargs)
-
-    @login_required
-    @roles_required("admin")  # todo: remove after we check for sensor ownership
-    @route("/<id>/chart_data/")
-    @use_kwargs(
-        {
-            "event_starts_after": AwareDateTimeField(format="iso", required=False),
-            "event_ends_before": AwareDateTimeField(format="iso", required=False),
-            "beliefs_after": AwareDateTimeField(format="iso", required=False),
-            "beliefs_before": AwareDateTimeField(format="iso", required=False),
-        },
-        location="query",
-    )
-    def get_chart_data(self, id, **kwargs):
-        """GET from /sensor/<id>/chart_data
-
-        Data for use in charts (in case you have the chart specs already).
-        """
-        sensor = get_sensor_or_abort(id)
-        return sensor.search_beliefs(as_json=True, **kwargs)
-
-    @login_required
-    @roles_required("admin")  # todo: remove after we check for sensor ownership
-    def get(self, id: int):
-        """GET from /sensor/<id>"""
-        sensor = get_sensor_or_abort(id)
-        attributes = ["name", "timezone", "timerange"]
-        return {attr: getattr(sensor, attr) for attr in attributes}
-
-
-def get_sensor_or_abort(id: int) -> Sensor:
-    sensor = Sensor.query.filter(Sensor.id == id).one_or_none()
-    if sensor is None:
-        raise abort(404, f"Sensor {id} not found")
-    return sensor