diff --git a/.pyproject.toml b/.pyproject.toml
new file mode 100644
index 0000000..2a9ad56
--- /dev/null
+++ b/.pyproject.toml
@@ -0,0 +1,61 @@
+[build-system]
+requires = ["setuptools>=61.0", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "code-doc-cli"
+version = "0.1.0"
+description = "A CLI tool that automatically extracts documentation from code comments, function signatures, and type annotations"
+readme = "README.md"
+requires-python = ">=3.9"
+license = {text = "MIT"}
+authors = [
+    {name = "Code Doc CLI Team"}
+]
+keywords = ["documentation", "cli", "markdown", "python", "typescript", "golang"]
+classifiers = [
+    "Development Status :: 4 - Beta",
+    "Environment :: Console",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: MIT License",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+]
+dependencies = [
+    "click>=8.0",
+    "pygments>=2.15",
+    "tree-sitter-languages>=1.0",
+    "python-dotenv>=1.0",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=7.0",
+    "pytest-cov>=4.0",
+    "black>=23.0",
+    "ruff>=0.1.0",
+    "mypy>=1.0",
+]
+
+[project.scripts]
+code-doc = "code_doc_cli.cli.main:main"
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]
+python_files = ["test_*.py"]
+python_functions = ["test_*"]
+
+[tool.ruff]
+line-length = 100
+target-version = "py39"
+
+[tool.ruff.lint]
+select = ["E", "F", "I", "UP", "W"]
+ignore = []
+
+[tool.black]
+line-length = 100
+target-version = ["py39", "py310", "py311", "py312"]