diff --git a/metagpt/tools/__init__.py b/metagpt/tools/__init__.py
index f743d63c7..4ca46fc89 100644
--- a/metagpt/tools/__init__.py
+++ b/metagpt/tools/__init__.py
@@ -7,6 +7,13 @@
 """
 
 from enum import Enum
+from metagpt.tools import tool_types  # this registers all tool types
+from metagpt.tools.functions import libs  # this registers all tools
+from metagpt.tools.tool_registry import TOOL_REGISTRY
+
+_ = tool_types  # Avoid pre-commit error
+_ = libs  # Avoid pre-commit error
+_ = TOOL_REGISTRY  # Avoid pre-commit error
 
 
 class SearchEngineType(Enum):
@@ -26,62 +33,3 @@ class WebBrowserEngineType(Enum):
     def __missing__(cls, key):
         """Default type conversion"""
         return cls.CUSTOM
-
-
-class ToolType(BaseModel):
-    name: str
-    module: str = ""
-    desc: str
-    usage_prompt: str = ""
-
-
-TOOL_TYPE_MAPPINGS = {
-    "data_preprocess": ToolType(
-        name="data_preprocess",
-        module=str(TOOL_LIBS_PATH / "data_preprocess"),
-        desc="Only for changing value inplace.",
-        usage_prompt=DATA_PREPROCESS_PROMPT,
-    ),
-    "feature_engineering": ToolType(
-        name="feature_engineering",
-        module=str(TOOL_LIBS_PATH / "feature_engineering"),
-        desc="Only for creating new columns for input data.",
-        usage_prompt=FEATURE_ENGINEERING_PROMPT,
-    ),
-    "model_train": ToolType(
-        name="model_train",
-        module="",
-        desc="Only for training model.",
-        usage_prompt=MODEL_TRAIN_PROMPT,
-    ),
-    "model_evaluate": ToolType(
-        name="model_evaluate",
-        module="",
-        desc="Only for evaluating model.",
-        usage_prompt=MODEL_EVALUATE_PROMPT,
-    ),
-    "stable_diffusion": ToolType(
-        name="stable_diffusion",
-        module="metagpt.tools.sd_engine",
-        desc="Related to text2image, image2image using stable diffusion model.",
-        usage_prompt="",
-    ),
-    "scrape_web": ToolType(
-        name="scrape_web",
-        module="metagpt.tools.functions.libs.scrape_web.scrape_web",
-        desc="Scrape data from web page.",
-        usage_prompt="",
-    ),
-    "vision": ToolType(
-        name="vision",
-        module=str(TOOL_LIBS_PATH / "vision"),
-        desc="Only for converting image into webpage code.",
-        usage_prompt=VISION_PROMPT,
-    ),
-    "other": ToolType(
-        name="other",
-        module="",
-        desc="Any tasks that do not fit into the previous categories",
-        usage_prompt="",
-    ),
-}
diff --git a/metagpt/tools/functions/libs/__init__.py b/metagpt/tools/functions/libs/__init__.py
index a0a43f507..f0a61a7d9 100644
--- a/metagpt/tools/functions/libs/__init__.py
+++ b/metagpt/tools/functions/libs/__init__.py
@@ -4,3 +4,10 @@
 # @Author  : lidanyang
 # @File    : __init__.py
 # @Desc    :
+from metagpt.tools.functions.libs import (
+    data_preprocess,
+    feature_engineering,
+)
+
+_ = data_preprocess  # Avoid pre-commit error
+_ = feature_engineering  # Avoid pre-commit error
diff --git a/metagpt/tools/functions/libs/data_preprocess.py b/metagpt/tools/functions/libs/data_preprocess.py
index 59ede3ffc..019ffd34e 100644
--- a/metagpt/tools/functions/libs/data_preprocess.py
+++ b/metagpt/tools/functions/libs/data_preprocess.py
@@ -14,8 +14,8 @@ from sklearn.preprocessing import (
 )
 
 from metagpt.tools.functions.libs.base import MLProcess
+from metagpt.tools.tool_data_type import ToolTypeEnum
 from metagpt.tools.tool_registry import register_tool
-from metagpt.tools.tool_schema import ToolTypeEnum
 
 TOOL_TYPE = ToolTypeEnum.DATA_PREPROCESS.value
 
diff --git a/metagpt/tools/functions/libs/feature_engineering.py b/metagpt/tools/functions/libs/feature_engineering.py
index 8b96cbd07..cd03592a6 100644
--- a/metagpt/tools/functions/libs/feature_engineering.py
+++ b/metagpt/tools/functions/libs/feature_engineering.py
@@ -16,8 +16,8 @@ from sklearn.model_selection import KFold
 from sklearn.preprocessing import KBinsDiscretizer, PolynomialFeatures
 
 from metagpt.tools.functions.libs.base import MLProcess
+from metagpt.tools.tool_data_type import ToolTypeEnum
 from metagpt.tools.tool_registry import register_tool
-from metagpt.tools.tool_schema import ToolTypeEnum
 
 TOOL_TYPE = ToolTypeEnum.FEATURE_ENGINEERING.value
 
diff --git a/metagpt/tools/sd_engine.py b/metagpt/tools/sd_engine.py
index ba61fd496..2e3f36ef8 100644
--- a/metagpt/tools/sd_engine.py
+++ b/metagpt/tools/sd_engine.py
@@ -16,6 +16,8 @@ from PIL import Image, PngImagePlugin
 from metagpt.config import CONFIG
 from metagpt.const import SD_OUTPUT_FILE_REPO
 from metagpt.logs import logger
+from metagpt.tools.tool_data_type import ToolTypeEnum
+from metagpt.tools.tool_registry import register_tool
 
 payload = {
     "prompt": "",
@@ -51,6 +53,7 @@ payload = {
 default_negative_prompt = "(easynegative:0.8),black, dark,Low resolution"
 
 
+@register_tool(tool_type_name=ToolTypeEnum.STABLE_DIFFUSION)
 class SDEngine:
     def __init__(self, sd_url=""):
         # Initialize the SDEngine with configuration
diff --git a/metagpt/tools/tool_schema.py b/metagpt/tools/tool_data_type.py
similarity index 92%
rename from metagpt/tools/tool_schema.py
rename to metagpt/tools/tool_data_type.py
index 2b90996e5..c767fef9b 100644
--- a/metagpt/tools/tool_schema.py
+++ b/metagpt/tools/tool_data_type.py
@@ -8,6 +8,7 @@ class ToolTypeEnum(Enum):
     FEATURE_ENGINEERING = "feature_engineering"
     MODEL_TRAIN = "model_train"
     MODEL_EVALUATE = "model_evaluate"
+    STABLE_DIFFUSION = "stable_diffusion"
     OTHER = "other"
 
     def __missing__(self, key):
diff --git a/metagpt/tools/tool_registry.py b/metagpt/tools/tool_registry.py
index 201c63c71..e6519bba9 100644
--- a/metagpt/tools/tool_registry.py
+++ b/metagpt/tools/tool_registry.py
@@ -5,28 +5,27 @@
 @Author  : garylin2099
 @File    : tool_registry.py
 """
-import os
-from collections import defaultdict
 import inspect
+import os
 import re
+from collections import defaultdict
 
 import yaml
 
-from metagpt.tools.tool_schema import ToolType, ToolSchema, Tool
-from metagpt.logs import logger
 from metagpt.const import TOOL_SCHEMA_PATH
+from metagpt.logs import logger
+from metagpt.tools.tool_data_type import Tool, ToolSchema, ToolType
 
 
 class ToolRegistry:
     def __init__(self):
         self.tools = {}
         self.tool_types = {}
-        self.tools_by_types = defaultdict(
-            dict
-        )  # two-layer k-v, {tool_type_name: {tool_name: {...}, ...}, ...}
+        self.tools_by_types = defaultdict(dict)  # two-layer k-v, {tool_type_name: {tool_name: {...}, ...}, ...}
 
     def register_tool_type(self, tool_type: ToolType):
         self.tool_types[tool_type.name] = tool_type
+        logger.info(f"{tool_type.name} registered")
 
     def register_tool(
         self,
@@ -55,7 +54,7 @@ class ToolRegistry:
         schema["tool_path"] = tool_path  # corresponding code file path of the tool
         try:
             ToolSchema(**schema)  # validation
-        except Exception as e:
+        except Exception:
             pass
             # logger.warning(
             #     f"{tool_name} schema not conforms to required format, but will be used anyway. Mismatch: {e}"
@@ -67,19 +66,19 @@ class ToolRegistry:
 
     def has_tool(self, key):
         return key in self.tools
-    
+
     def get_tool(self, key):
         return self.tools.get(key)
-    
+
     def get_tools_by_type(self, key):
         return self.tools_by_types.get(key)
-    
+
     def has_tool_type(self, key):
         return key in self.tool_types
 
     def get_tool_type(self, key):
         return self.tool_types.get(key)
-    
+
     def get_tool_types(self):
         return self.tool_types
 
@@ -99,7 +98,7 @@ def register_tool(tool_name="", tool_type_name="other", schema_path=None):
 
     def decorator(cls, tool_name=tool_name):
         tool_name = tool_name or cls.__name__
-        
+
         # Get the file path where the function / class is defined and the source code
         file_path = inspect.getfile(cls)
         if "metagpt" in file_path:
@@ -119,9 +118,7 @@ def register_tool(tool_name="", tool_type_name="other", schema_path=None):
 
 
 def make_schema(tool_code, path):
-    os.makedirs(
-        os.path.dirname(path), exist_ok=True
-    )  # Create the necessary directories
+    os.makedirs(os.path.dirname(path), exist_ok=True)  # Create the necessary directories
     schema = {}  # an empty schema for now
     with open(path, "w", encoding="utf-8") as f:
         yaml.dump(schema, f)
diff --git a/metagpt/tools/tool_types.py b/metagpt/tools/tool_types.py
index 9104f90b8..97eb574da 100644
--- a/metagpt/tools/tool_types.py
+++ b/metagpt/tools/tool_types.py
@@ -1,10 +1,10 @@
 from metagpt.prompts.tool_type import (
     DATA_PREPROCESS_PROMPT,
     FEATURE_ENGINEERING_PROMPT,
-    MODEL_TRAIN_PROMPT,
     MODEL_EVALUATE_PROMPT,
+    MODEL_TRAIN_PROMPT,
 )
-from metagpt.tools.tool_schema import ToolTypeEnum, ToolType
+from metagpt.tools.tool_data_type import ToolType, ToolTypeEnum
 from metagpt.tools.tool_registry import register_tool_type
 
 
@@ -36,8 +36,13 @@ class ModelEvaluate(ToolType):
     usage_prompt: str = MODEL_EVALUATE_PROMPT
 
 
+@register_tool_type
+class StableDiffusion(ToolType):
+    name: str = ToolTypeEnum.STABLE_DIFFUSION.value
+    desc: str = "Related to text2image, image2image using stable diffusion model."
+
+
 @register_tool_type
 class Other(ToolType):
     name: str = ToolTypeEnum.OTHER.value
     desc: str = "Any tools not in the defined categories"
-    usage_prompt: str = ""