diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..975568c
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,57 @@
+[build-system]
+requires = ["setuptools>=61.0", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "ai-code-refactor-cli"
+version = "0.1.0"
+description = "A CLI tool that analyzes AI-generated code for security vulnerabilities, anti-patterns, and performance issues"
+readme = "README.md"
+license = {text = "MIT"}
+requires-python = ">=3.10"
+classifiers = [
+    "Development Status :: 4 - Beta",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: MIT License",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+]
+dependencies = [
+    "click>=8.1.0",
+    "tree-sitter>=0.23.0",
+    "tree-sitter-python>=0.23.0",
+    "tree-sitter-javascript>=0.23.0",
+    "tree-sitter-typescript>=0.23.0",
+    "rich>=13.7.0",
+    "pyyaml>=6.0.1",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=8.0.0",
+    "pytest-cov>=4.1.0",
+    "pytest-mock>=3.12.0",
+]
+
+[project.scripts]
+aicoderef = "src.cli.main:cli"
+
+[tool.setuptools.packages.find]
+where = ["."]
+include = ["src.*"]
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]
+python_files = ["test_*.py"]
+python_classes = ["Test*"]
+python_functions = ["test_*"]
+addopts = "-v --tb=short"
+
+[tool.coverage.run]
+source = ["src"]
+omit = ["tests/*"]
+
+[tool.coverage.report]
+exclude_lines = ["pragma: no cover", "def __repr__", "raise NotImplementedError"]