diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..3888c67
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,84 @@
+[project]
+name = "ai-code-audit-cli"
+version = "0.1.0"
+description = "A CLI tool that validates AI-generated code for common issues, anti-patterns, and security vulnerabilities"
+readme = "README.md"
+requires-python = ">=3.9"
+license = {text = "MIT"}
+authors = [
+    {name = "AI Code Audit Team"}
+]
+classifiers = [
+    "Development Status :: 4 - Beta",
+    "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 = [
+    "typer>=0.14",
+    "tree-sitter>=0.25.2",
+    "tree-sitter-python>=0.23",
+    "tree-sitter-javascript>=0.23",
+    "tree-sitter-typescript>=0.23",
+    "bandit>=1.8",
+    "ruff>=0.14",
+    "rich>=13.0",
+    "pydantic>=2.0",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=7.4",
+    "pytest-cov>=4.1",
+    "black>=23.0",
+    "mypy>=1.5",
+]
+
+[project.scripts]
+audit = "src.main:main"
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[tool.hatch.build.targets.wheel]
+packages = ["src"]
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]
+python_files = ["test_*.py"]
+python_classes = ["Test*"]
+python_functions = ["test_*"]
+addopts = "-v --tb=short"
+
+[tool.ruff]
+target-version = "py39"
+line-length = 100
+
+[tool.ruff.lint]
+select = [
+    "E",      # pycodestyle errors
+    "W",      # pycodestyle warnings
+    "F",      # pyflakes
+    "B",      # flake8-bugbear
+    "C4",     # flake8-comprehensions
+    "UP",     # pyupgrade
+    "SIM",    # flake8-simplify
+    "ARG",    # flake8-unused-arguments
+    "D",      # pydocstyle
+]
+ignore = [
+    "D100",   # Missing docstring in public module
+    "D104",   # Missing docstring in public package
+    "D203",   # 1 blank line required before class docstring
+]
+
+[tool.mypy]
+python_version = "3.9"
+warn_return_any = true
+warn_unused_configs = true
+ignore_missing_imports = true