diff --git a/Rhino/Speckle.Rhino.Api/IRhinoCurve.cs b/Rhino/Speckle.Rhino.Api/IRhinoCurve.cs
index 023f2f1..401d24e 100644
--- a/Rhino/Speckle.Rhino.Api/IRhinoCurve.cs
+++ b/Rhino/Speckle.Rhino.Api/IRhinoCurve.cs
@@ -1,4 +1,4 @@
-using System.Collections;
+using System.Collections;
 using Rhino;
 using Rhino.Collections;
 using Rhino.DocObjects;
@@ -26,6 +26,19 @@ public partial class RhinoDocProxy
 [Proxy(typeof(Curve), new[] { "Duplicate" })]
 public partial interface IRhinoCurveProxy : IRhinoCurve;
 
+public partial class CurveProxy
+{
+  public IRhinoPolyCurve? ToPolyCurve() => A.Call<IRhinoPolyCurve>(() => _Instance as PolyCurve);
+
+  public IRhinoArcCurve? ToArcCurve() => A.Call<IRhinoArcCurve>(() => _Instance as ArcCurve);
+
+  public IRhinoPolylineCurve? ToPolylineCurve() => A.Call<IRhinoPolylineCurve>(() => _Instance as PolylineCurve);
+
+  public IRhinoLineCurve? ToLineCurve() => A.Call<IRhinoLineCurve>(() => _Instance as LineCurve);
+
+  public IRhinoNurbsCurve? ToNurbsCurveReflection() => A.Call<IRhinoNurbsCurve>(() => _Instance as NurbsCurve);
+}
+
 [Proxy(typeof(GeometryBase), new[] { "Transform" })]
 public partial interface IRhinoGeometryBaseProxy : IRhinoGeometryBase;
 
@@ -249,7 +262,7 @@ public partial class BrepEdgeListProxy
 [Proxy(typeof(BrepEdge))]
 public partial interface IRhinoBrepEdgeProxy : IRhinoBrepEdge;
 
-[Proxy(typeof(CurveProxy))]
+[Proxy(typeof(Rhino.Geometry.CurveProxy))]
 public partial interface IRhinoCurveProxy2Proxy : IRhinoCurveProxy2;
 
 [Proxy(typeof(BrepTrimList), new[] { "AddSingularTrim", "GetEnumerator" })]
diff --git a/Rhino/Speckle.Rhino.Interfaces/RhinoCurve.cs b/Rhino/Speckle.Rhino.Interfaces/RhinoCurve.cs
index aa30ad8..0627e28 100644
--- a/Rhino/Speckle.Rhino.Interfaces/RhinoCurve.cs
+++ b/Rhino/Speckle.Rhino.Interfaces/RhinoCurve.cs
@@ -1,4 +1,4 @@
-using System.Drawing;
+using System.Drawing;
 
 namespace Speckle.Rhino7.Interfaces;
 
@@ -33,6 +33,11 @@ public interface IRhinoCurve : IRhinoGeometryBase
   int Degree { get; }
   bool IsPeriodic { get; }
   IRhinoCurve Trim(IRhinoInterval interval);
+  IRhinoPolyCurve? ToPolyCurve();
+  IRhinoArcCurve? ToArcCurve();
+  IRhinoPolylineCurve? ToPolylineCurve();
+  IRhinoLineCurve? ToLineCurve();
+  IRhinoNurbsCurve? ToNurbsCurveReflection();
 }
 
 public interface IRhinoGeometryBase : IRhinoCommonObject
diff --git a/Speckle.Host.Apis.sln b/Speckle.Host.Apis.sln
index 318ed3a..119ebb1 100644
--- a/Speckle.Host.Apis.sln
+++ b/Speckle.Host.Apis.sln
@@ -123,6 +123,6 @@ Global
 		{EB2B9350-BE2B-4197-ACA8-3963EAE3B6C9} = {BC12C4CA-7065-4B76-9787-E8DA4745AD4E}
 		{5F678DE0-AAE7-4FA9-9A7F-C3C0B0E3E3D7} = {BC12C4CA-7065-4B76-9787-E8DA4745AD4E}
 		{E1C43415-3200-45F4-8BF9-B4DD7D7F2ED6} = {3B0D8F6E-C701-446E-BAE3-B6FDF1812901}
-		{E1C43415-3200-45F4-8BF9-A4DD7D7F2ED6} = {72DEFF6C-31DE-4050-8692-AEE8224E9925}
+		{E1C43415-3200-45F4-8BF9-A4DD7D7F2ED6} = {8F540B7F-7548-46E9-BDEC-4DAB99367908}
 	EndGlobalSection
 EndGlobal