diff --git a/.gitignore b/.gitignore
index 4a945b3..5525699 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+.idea/
 # ---> macOS
 # General
 .DS_Store
diff --git a/.python-version b/.python-version
new file mode 100644
index 0000000..e4fba21
--- /dev/null
+++ b/.python-version
@@ -0,0 +1 @@
+3.12
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..b819550
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,14 @@
+[project]
+name = "py-common-lib"
+version = "0.1.0"
+description = "Add your description here"
+readme = "README.md"
+authors = [
+    { name = "Hatter Jiang", email = "jht5945@gmail.com" }
+]
+requires-python = ">=3.12"
+dependencies = []
+
+[build-system]
+requires = ["uv_build>=0.11.6,<0.12.0"]
+build-backend = "uv_build"
diff --git a/src/py_common_lib/__init__.py b/src/py_common_lib/__init__.py
new file mode 100644
index 0000000..a9f19a3
--- /dev/null
+++ b/src/py_common_lib/__init__.py
@@ -0,0 +1,2 @@
+def hello() -> str:
+    return "Hello from py-common-lib!"
diff --git a/src/py_common_lib/py.typed b/src/py_common_lib/py.typed
new file mode 100644
index 0000000..e69de29