diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..26158f7
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,37 @@
+[build-system]
+requires = ["setuptools>=61.0", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "json-to-openapi"
+version = "1.0.0"
+description = "A Python CLI tool that analyzes JSON data files and automatically generates valid OpenAPI 3.0 specification files"
+readme = "README.md"
+license = {text = "MIT"}
+requires-python = ">=3.9"
+dependencies = [
+    "click>=8.0",
+    "jsonschema>=4.0",
+    "pyyaml>=6.0",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=7.0",
+    "pytest-cov>=4.0",
+]
+
+[project.scripts]
+json-to-openapi = "json_to_openapi.cli:main"
+
+[tool.setuptools.packages.find]
+include = ["json_to_openapi*"]
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]
+python_files = ["test_*.py"]
+python_functions = ["test_*"]
+
+[tool.ruff]
+line-length = 100
+target-version = "py39"