diff --git a/.gitignore b/.gitignore
index e004ae30..fb4ec043 100644
--- a/.gitignore
+++ b/.gitignore
@@ -142,3 +142,6 @@ compile_commands.json
 /quaddtype/subprojects/qblas/
 /quaddtype/subprojects/sleef/
 .wraplock
+
+# docs
+/quaddtype/docs/_build/
diff --git a/quaddtype/README.md b/quaddtype/README.md
index 0d6051e9..e1975d12 100644
--- a/quaddtype/README.md
+++ b/quaddtype/README.md
@@ -25,7 +25,7 @@ np.array([1,2,3], dtype=QuadPrecDType("longdouble"))
 
 ## Installation from source
 
-#### Prerequisites
+### Prerequisites
 
 - **gcc/clang**
 - **CMake** (≥3.15)
@@ -43,7 +43,7 @@ python3 -m venv temp
 source temp/bin/activate
 
 # Install the package
-pip install numpy pytest
+pip install numpy pytest meson-python
 
 # To build without QBLAS (default for MSVC)
 # export CFLAGS="-DDISABLE_QUADBLAS"
@@ -167,4 +167,4 @@ This is a development feature to help detect threading issues. To build `numpy-q
   export CXXFLAGS="-fsanitize=thread -g -O0"
   export LDFLAGS="-fsanitize=thread"
   python -m pip install . -vv --no-build-isolation -Csetup-args=-Db_sanitize=thread
-  ```
\ No newline at end of file
+  ```
diff --git a/quaddtype/docs/Makefile b/quaddtype/docs/Makefile
new file mode 100644
index 00000000..d4bb2cbb
--- /dev/null
+++ b/quaddtype/docs/Makefile
@@ -0,0 +1,20 @@
+# Minimal makefile for Sphinx documentation
+#
+
+# You can set these variables from the command line, and also
+# from the environment for the first two.
+SPHINXOPTS    ?=
+SPHINXBUILD   ?= sphinx-build
+SOURCEDIR     = .
+BUILDDIR      = _build
+
+# Put it first so that "make" without argument is like "make help".
+help:
+	@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
+
+.PHONY: help Makefile
+
+# Catch-all target: route all unknown targets to Sphinx using the new
+# "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
+%: Makefile
+	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
diff --git a/quaddtype/docs/api_docs.rst b/quaddtype/docs/api_docs.rst
new file mode 100644
index 00000000..b167a85a
--- /dev/null
+++ b/quaddtype/docs/api_docs.rst
@@ -0,0 +1,7 @@
+NumPy QuadDType API Documentation
+=================================
+
+.. automodule:: numpy_quaddtype
+    :members:
+    :undoc-members:
+    :show-inheritance:
diff --git a/quaddtype/docs/conf.py b/quaddtype/docs/conf.py
new file mode 100644
index 00000000..2f6bc53d
--- /dev/null
+++ b/quaddtype/docs/conf.py
@@ -0,0 +1,29 @@
+# Configuration file for the Sphinx documentation builder.
+#
+# For the full list of built-in configuration values, see the documentation:
+# https://www.sphinx-doc.org/en/master/usage/configuration.html
+
+# -- Project information -----------------------------------------------------
+# https://www.sphinx-doc.org/en/master/usage/configuration.html#project-information
+
+project = 'NumPy QuadDType'
+copyright = '2025, NumPy Community'
+author = 'NumPy Community'
+
+# -- General configuration ---------------------------------------------------
+# https://www.sphinx-doc.org/en/master/usage/configuration.html#general-configuration
+
+extensions = [
+    'sphinx.ext.autodoc',
+    'sphinx.ext.napoleon',
+    'myst_parser',
+]
+
+templates_path = ['_templates']
+exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store']
+
+# -- Options for HTML output -------------------------------------------------
+# https://www.sphinx-doc.org/en/master/usage/configuration.html#options-for-html-output
+
+html_theme = 'pydata_sphinx_theme'
+html_static_path = ['_static']
diff --git a/quaddtype/docs/index.md b/quaddtype/docs/index.md
new file mode 100644
index 00000000..c19eba45
--- /dev/null
+++ b/quaddtype/docs/index.md
@@ -0,0 +1,8 @@
+```{include} ../README.md
+```
+
+```{toctree}
+:hidden:
+
+api_docs.rst
+```
diff --git a/quaddtype/docs/make.bat b/quaddtype/docs/make.bat
new file mode 100644
index 00000000..954237b9
--- /dev/null
+++ b/quaddtype/docs/make.bat
@@ -0,0 +1,35 @@
+@ECHO OFF
+
+pushd %~dp0
+
+REM Command file for Sphinx documentation
+
+if "%SPHINXBUILD%" == "" (
+	set SPHINXBUILD=sphinx-build
+)
+set SOURCEDIR=.
+set BUILDDIR=_build
+
+%SPHINXBUILD% >NUL 2>NUL
+if errorlevel 9009 (
+	echo.
+	echo.The 'sphinx-build' command was not found. Make sure you have Sphinx
+	echo.installed, then set the SPHINXBUILD environment variable to point
+	echo.to the full path of the 'sphinx-build' executable. Alternatively you
+	echo.may add the Sphinx directory to PATH.
+	echo.
+	echo.If you don't have Sphinx installed, grab it from
+	echo.https://www.sphinx-doc.org/
+	exit /b 1
+)
+
+if "%1" == "" goto help
+
+%SPHINXBUILD% -M %1 %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O%
+goto end
+
+:help
+%SPHINXBUILD% -M help %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O%
+
+:end
+popd
diff --git a/quaddtype/pyproject.toml b/quaddtype/pyproject.toml
index e532bf54..2d569c69 100644
--- a/quaddtype/pyproject.toml
+++ b/quaddtype/pyproject.toml
@@ -37,6 +37,12 @@ test = [
     "pytest-run-parallel"
 ]
 
+docs = [
+    "sphinx",
+    "pydata-sphinx-theme",
+    "myst-parser",
+]
+
 [project.urls]
 Repository = "https://github.com/numpy/numpy-user-dtypes"
 Documentation = "https://github.com/numpy/numpy-user-dtypes/tree/main/quaddtype"