diff --git a/extensions-builtin/sd_forge_controlnet/lib_controlnet/api.py b/extensions-builtin/sd_forge_controlnet/lib_controlnet/api.py
index 29e7d662..8bd43ae8 100644
--- a/extensions-builtin/sd_forge_controlnet/lib_controlnet/api.py
+++ b/extensions-builtin/sd_forge_controlnet/lib_controlnet/api.py
@@ -11,6 +11,8 @@ from .global_state import (
     get_all_preprocessor_names,
     get_all_controlnet_names,
     get_preprocessor,
+    get_all_preprocessor_tags,
+    select_control_type,
 )
 from .utils import judge_image_type
 from .logging import logger
@@ -53,6 +55,30 @@ def controlnet_api(_: gr.Blocks, app: FastAPI):
             # "module_detail": external_code.get_modules_detail(alias_names),
         }
 
+    @app.get("/controlnet/control_types")
+    async def control_types():
+        def format_control_type(
+            filtered_preprocessor_list,
+            filtered_model_list,
+            default_option,
+            default_model,
+        ):
+            control_dict = {
+                    "module_list": filtered_preprocessor_list,
+                    "model_list": filtered_model_list,
+                    "default_option": default_option,
+                    "default_model": default_model,
+                }
+
+            return control_dict
+
+        return {
+            "control_types": {
+                control_type: format_control_type(*select_control_type(control_type))
+                for control_type in get_all_preprocessor_tags()
+            }
+        }
+
     @app.post("/controlnet/detect")
     async def detect(
         controlnet_module: str = Body("none", title="Controlnet Module"),
diff --git a/extensions-builtin/sd_forge_controlnet/lib_controlnet/global_state.py b/extensions-builtin/sd_forge_controlnet/lib_controlnet/global_state.py
index dc87dda8..15bef936 100644
--- a/extensions-builtin/sd_forge_controlnet/lib_controlnet/global_state.py
+++ b/extensions-builtin/sd_forge_controlnet/lib_controlnet/global_state.py
@@ -6,6 +6,7 @@ from modules import shared, sd_models
 from lib_controlnet.enums import StableDiffusionVersion
 from modules_forge.shared import controlnet_dir, supported_preprocessors
 
+from typing import Dict, Tuple, List
 
 CN_MODEL_EXTS = [".pt", ".pth", ".ckpt", ".safetensors", ".bin", ".patch"]
 
@@ -56,6 +57,10 @@ controlnet_names = ['None']
 def get_preprocessor(name):
     return supported_preprocessors.get(name, None)
 
+def get_default_preprocessor(tag):
+    ps = get_filtered_preprocessor_names(tag)
+    assert len(ps) > 0
+    return ps[0] if len(ps) == 1 else ps[1]
 
 def get_sorted_preprocessors():
     preprocessors = [p for k, p in supported_preprocessors.items() if k != 'None']
@@ -144,3 +149,44 @@ def get_sd_version() -> StableDiffusionVersion:
         return StableDiffusionVersion.SD1x
     else:
         return StableDiffusionVersion.UNKNOWN
+
+
+def select_control_type(
+    control_type: str,
+    sd_version: StableDiffusionVersion = StableDiffusionVersion.UNKNOWN,
+) -> Tuple[List[str], List[str], str, str]:
+    global controlnet_names
+
+    pattern = control_type.lower()
+    all_models = list(controlnet_names)
+
+    if pattern == "all":
+        preprocessors = get_sorted_preprocessors().values()
+        return [
+            [p.name for p in preprocessors],
+            all_models,
+            'none',  # default option
+            "None"   # default model
+        ]
+
+    filtered_model_list = get_filtered_controlnet_names(control_type)
+
+    if pattern == "none":
+        filtered_model_list.append("None")
+
+    assert len(filtered_model_list) > 0, "'None' model should always be available."
+    if len(filtered_model_list) == 1:
+        default_model = "None"
+    else:
+        default_model = filtered_model_list[1]
+        for x in filtered_model_list:
+            if "11" in x.split("[")[0]:
+                default_model = x
+                break
+
+    return (
+        get_filtered_preprocessor_names(control_type),
+        filtered_model_list,
+        get_default_preprocessor(control_type),
+        default_model
+    )