diff --git a/src/murfey/server/api/processing_parameters.py b/src/murfey/server/api/processing_parameters.py
new file mode 100644
index 000000000..dc81b56d9
--- /dev/null
+++ b/src/murfey/server/api/processing_parameters.py
@@ -0,0 +1,36 @@
+from logging import getLogger
+
+from fastapi import APIRouter
+from pydantic import BaseModel
+from sqlmodel import Session, select
+
+from murfey.server.murfey_db import murfey_db
+from murfey.util.db import SessionProcessingParameters
+
+logger = getLogger("murfey.server.api.processing_parameters")
+
+router = APIRouter()
+
+
+class EditableSessionProcessingParameters(BaseModel):
+    gain_ref: str
+    dose_per_frame: float
+    eer_fractionation_file: str
+    symmetry: str
+
+
+@router.get("sessions/{session_id}/session_processing_parameters")
+def get_session_processing_parameters(
+    session_id: int, db: Session = murfey_db
+) -> EditableSessionProcessingParameters:
+    proc_params = db.exec(
+        select(SessionProcessingParameters).where(
+            SessionProcessingParameters.session_id == session_id
+        )
+    ).one()
+    return EditableSessionProcessingParameters(
+        gain_ref=proc_params.gain_ref,
+        dose_per_frame=proc_params.dose_per_frame,
+        eer_fractionation_file=proc_params.eer_fractionation_file,
+        symmetry=proc_params.symmetry,
+    )
diff --git a/src/murfey/server/demo_api.py b/src/murfey/server/demo_api.py
index 29c35d9af..65ec28e41 100644
--- a/src/murfey/server/demo_api.py
+++ b/src/murfey/server/demo_api.py
@@ -28,7 +28,6 @@
     _flush_grid_square_records,
     _flush_tomography_preprocessing,
     _murfey_id,
-    _register_picked_particles_use_diameter,
     feedback_callback,
     get_hostname,
     get_microscope,
@@ -91,6 +90,7 @@
 )
 from murfey.util.processing_params import default_spa_parameters
 from murfey.util.state import global_state
+from murfey.workflows.spa.picking import _register_picked_particles_use_diameter
 
 log = logging.getLogger("murfey.server.demo_api")
 
diff --git a/src/murfey/server/main.py b/src/murfey/server/main.py
index 96533fd7d..6c99b580e 100644
--- a/src/murfey/server/main.py
+++ b/src/murfey/server/main.py
@@ -17,6 +17,7 @@
 import murfey.server.api.display
 import murfey.server.api.hub
 import murfey.server.api.instrument
+import murfey.server.api.processing_parameters
 import murfey.server.api.spa
 import murfey.server.websocket
 import murfey.util.models
@@ -73,6 +74,7 @@ class Settings(BaseSettings):
 app.include_router(murfey.server.api.display.router)
 app.include_router(murfey.server.api.instrument.router)
 app.include_router(murfey.server.api.hub.router)
+app.include_router(murfey.server.api.processing_parameters.router)
 app.include_router(murfey.server.websocket.ws)
 
 # Search external packages for additional routers to include in Murfey