diff --git a/ansys/api/geometry/v0/models.proto b/ansys/api/geometry/v0/models.proto
index ee14a62..db2b63f 100644
--- a/ansys/api/geometry/v0/models.proto
+++ b/ansys/api/geometry/v0/models.proto
@@ -813,6 +813,12 @@ message FindLogoOptions {
   optional double fit_error = 4;
 }
 
+message DetectHelixesOptions {
+  optional double min_radius = 1;
+  optional double max_radius = 2;
+  optional double fit_radius_error = 3;
+}
+
 message TrackerCommandResponse{
   bool success = 1;
   repeated Body created_bodies = 2;
diff --git a/ansys/api/geometry/v0/preparetools.proto b/ansys/api/geometry/v0/preparetools.proto
index c227efe..500022c 100644
--- a/ansys/api/geometry/v0/preparetools.proto
+++ b/ansys/api/geometry/v0/preparetools.proto
@@ -36,6 +36,8 @@ service PrepareTools{
   rpc FindAndRemoveLogos(FindLogosRequest) returns (RemoveLogoResponse);
 
   rpc RemoveLogo(RemoveLogoRequest) returns (RemoveLogoResponse);
+
+  rpc DetectHelixes(DetectHelixesRequest) returns (DetectHelixesResponse);
 }
 
 message CreateEnclosureBoxRequest{
@@ -161,4 +163,18 @@ message RemoveLogoRequest{
 
 message RemoveLogoResponse {
   bool success = 1;
+}
+
+message DetectHelixesRequest {
+  repeated dbu.v0.EntityIdentifier body_ids = 1;
+  optional DetectHelixesOptions options = 2;
+}
+
+message DetectHelixesResponseData {
+  TrimmedCurve trimmed_curve = 1;
+  repeated Edge edges = 2;
+}
+
+message DetectHelixesResponse {
+  repeated DetectHelixesResponseData helixes = 1;
 }
\ No newline at end of file