diff --git a/modules/api/endpoints.py b/modules/api/endpoints.py
index b6f6c7eeb..44120e7b5 100644
--- a/modules/api/endpoints.py
+++ b/modules/api/endpoints.py
@@ -140,10 +140,13 @@ def get_checkpoint():
             checkpoint['hash'] = shared.sd_model.sd_checkpoint_info.shorthash
     return checkpoint
 
-def set_checkpoint(sd_model_checkpoint: str, force:bool=False):
-    from modules import sd_models
+def set_checkpoint(sd_model_checkpoint: str, dtype:str=None, force:bool=False):
+    from modules import sd_models, devices
     if force:
         sd_models.unload_model_weights(op='model')
+    if dtype is not None:
+        shared.opts.cuda_dtype = dtype
+        devices.set_dtype()
     shared.opts.sd_model_checkpoint = sd_model_checkpoint
     model = sd_models.reload_model_weights()
     return { 'ok': model is not None }