diff --git a/metagpt/tools/functions/libs/udf/__init__.py b/metagpt/tools/functions/libs/udf/__init__.py
index e69de29bb..0bdf84d87 100644
--- a/metagpt/tools/functions/libs/udf/__init__.py
+++ b/metagpt/tools/functions/libs/udf/__init__.py
@@ -0,0 +1,50 @@
+import ast
+import os
+import inspect
+import importlib
+from pathlib import Path
+
+
+def extract_function_signatures(file_path):
+    with open(file_path, 'r', encoding='utf-8') as file:
+        source_code = file.read()
+
+    tree = ast.parse(source_code)
+    function_signatures = []
+    for node in ast.walk(tree):
+        if isinstance(node, ast.FunctionDef):
+            # 只提取用户自定义函数，排除内置函数
+            if not (node.name.startswith('__') and node.name.endswith('__')):
+                # 获取函数名
+                function_name = node.name
+                # 获取参数列表
+                args = [arg.arg for arg in node.args.args]
+                # 获取函数签名
+                function_signature = f"{function_name}({', '.join(args)})"
+                # 导入函数
+                module = Path(file_path).parts[-1][:-len(Path(file_path).suffix)]
+                module = importlib.import_module(f"metagpt.tools.functions.libs.udf.{module}")
+                # 获取函数注释
+                function_schema = {'name': function_signature, 'doc': inspect.getdoc(getattr(module, function_name))}
+                function_signatures.append(function_schema)
+
+    return function_signatures
+
+
+def get_function_signatures_in_folder(folder_path):
+    python_files = [f for f in os.listdir(folder_path) if f.endswith('.py')]
+    all_function_signatures = []
+
+    for file_name in python_files:
+        file_path = os.path.join(folder_path, file_name)
+        function_signatures = extract_function_signatures(file_path)
+        all_function_signatures.extend(function_signatures)
+
+    return all_function_signatures
+
+
+folder_path = str(Path(__file__).parent.absolute())
+function_signatures = get_function_signatures_in_folder(folder_path)
+
+UDFS = [func for func in function_signatures
+        if not func['name'].startswith(('extract_function_signatures', 'get_function_signatures_in_folder'))]
diff --git a/tests/metagpt/tools/functions/test_udf.py b/tests/metagpt/tools/functions/test_udf.py
new file mode 100644
index 000000000..b0c921180
--- /dev/null
+++ b/tests/metagpt/tools/functions/test_udf.py
@@ -0,0 +1,9 @@
+from metagpt.tools.functions.libs.udf import UDFS
+from metagpt.logs import logger
+
+
+def test_udfs():
+    assert len(UDFS) > 0
+    assert 'name' in UDFS[0]
+    assert 'doc' in UDFS[0]
+    logger.info(UDFS)