diff --git a/.gitignore b/.gitignore
index 0d20b64..4930881 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 *.pyc
+_build
diff --git a/Makefile b/Makefile
index a490a88..2618fa8 100644
--- a/Makefile
+++ b/Makefile
@@ -41,3 +41,11 @@ fix:
 .PHONY: test
 test:
 	poetry run python -m unittest -v
+
+.PHONY: generate-api-docs
+generate-api-docs:
+	poetry run sphinx-apidoc --separate --maxdepth 1 --tocfile index --output-dir docs/api src/nitrokey
+
+.PHONY: build-docs
+build-docs:
+	poetry run sphinx-build docs _build
diff --git a/docs/api/index.rst b/docs/api/index.rst
new file mode 100644
index 0000000..80e8948
--- /dev/null
+++ b/docs/api/index.rst
@@ -0,0 +1,7 @@
+API Reference
+=============
+
+.. toctree::
+   :maxdepth: 1
+
+   nitrokey
diff --git a/docs/api/nitrokey.nk3.bootloader.rst b/docs/api/nitrokey.nk3.bootloader.rst
new file mode 100644
index 0000000..5a4d2fe
--- /dev/null
+++ b/docs/api/nitrokey.nk3.bootloader.rst
@@ -0,0 +1,7 @@
+nitrokey.nk3.bootloader module
+==============================
+
+.. automodule:: nitrokey.nk3.bootloader
+   :members:
+   :undoc-members:
+   :show-inheritance:
diff --git a/docs/api/nitrokey.nk3.device.rst b/docs/api/nitrokey.nk3.device.rst
new file mode 100644
index 0000000..5de09e7
--- /dev/null
+++ b/docs/api/nitrokey.nk3.device.rst
@@ -0,0 +1,7 @@
+nitrokey.nk3.device module
+==========================
+
+.. automodule:: nitrokey.nk3.device
+   :members:
+   :undoc-members:
+   :show-inheritance:
diff --git a/docs/api/nitrokey.nk3.rst b/docs/api/nitrokey.nk3.rst
new file mode 100644
index 0000000..f66774b
--- /dev/null
+++ b/docs/api/nitrokey.nk3.rst
@@ -0,0 +1,21 @@
+nitrokey.nk3 package
+====================
+
+Submodules
+----------
+
+.. toctree::
+   :maxdepth: 1
+
+   nitrokey.nk3.bootloader
+   nitrokey.nk3.device
+   nitrokey.nk3.secrets_app
+   nitrokey.nk3.updates
+
+Module contents
+---------------
+
+.. automodule:: nitrokey.nk3
+   :members:
+   :undoc-members:
+   :show-inheritance:
diff --git a/docs/api/nitrokey.nk3.secrets_app.rst b/docs/api/nitrokey.nk3.secrets_app.rst
new file mode 100644
index 0000000..8e70c0d
--- /dev/null
+++ b/docs/api/nitrokey.nk3.secrets_app.rst
@@ -0,0 +1,7 @@
+nitrokey.nk3.secrets\_app module
+================================
+
+.. automodule:: nitrokey.nk3.secrets_app
+   :members:
+   :undoc-members:
+   :show-inheritance:
diff --git a/docs/api/nitrokey.nk3.updates.rst b/docs/api/nitrokey.nk3.updates.rst
new file mode 100644
index 0000000..a21d818
--- /dev/null
+++ b/docs/api/nitrokey.nk3.updates.rst
@@ -0,0 +1,7 @@
+nitrokey.nk3.updates module
+===========================
+
+.. automodule:: nitrokey.nk3.updates
+   :members:
+   :undoc-members:
+   :show-inheritance:
diff --git a/docs/api/nitrokey.nkpk.rst b/docs/api/nitrokey.nkpk.rst
new file mode 100644
index 0000000..eed116c
--- /dev/null
+++ b/docs/api/nitrokey.nkpk.rst
@@ -0,0 +1,7 @@
+nitrokey.nkpk module
+====================
+
+.. automodule:: nitrokey.nkpk
+   :members:
+   :undoc-members:
+   :show-inheritance:
diff --git a/docs/api/nitrokey.rst b/docs/api/nitrokey.rst
new file mode 100644
index 0000000..b59c567
--- /dev/null
+++ b/docs/api/nitrokey.rst
@@ -0,0 +1,28 @@
+nitrokey package
+================
+
+Subpackages
+-----------
+
+.. toctree::
+   :maxdepth: 1
+
+   nitrokey.nk3
+   nitrokey.trussed
+
+Submodules
+----------
+
+.. toctree::
+   :maxdepth: 1
+
+   nitrokey.nkpk
+   nitrokey.updates
+
+Module contents
+---------------
+
+.. automodule:: nitrokey
+   :members:
+   :undoc-members:
+   :show-inheritance:
diff --git a/docs/api/nitrokey.trussed.admin_app.rst b/docs/api/nitrokey.trussed.admin_app.rst
new file mode 100644
index 0000000..bf810bf
--- /dev/null
+++ b/docs/api/nitrokey.trussed.admin_app.rst
@@ -0,0 +1,7 @@
+nitrokey.trussed.admin\_app module
+==================================
+
+.. automodule:: nitrokey.trussed.admin_app
+   :members:
+   :undoc-members:
+   :show-inheritance:
diff --git a/docs/api/nitrokey.trussed.base.rst b/docs/api/nitrokey.trussed.base.rst
new file mode 100644
index 0000000..494d9aa
--- /dev/null
+++ b/docs/api/nitrokey.trussed.base.rst
@@ -0,0 +1,7 @@
+nitrokey.trussed.base module
+============================
+
+.. automodule:: nitrokey.trussed.base
+   :members:
+   :undoc-members:
+   :show-inheritance:
diff --git a/docs/api/nitrokey.trussed.bootloader.lpc55.rst b/docs/api/nitrokey.trussed.bootloader.lpc55.rst
new file mode 100644
index 0000000..d26f4b6
--- /dev/null
+++ b/docs/api/nitrokey.trussed.bootloader.lpc55.rst
@@ -0,0 +1,7 @@
+nitrokey.trussed.bootloader.lpc55 module
+========================================
+
+.. automodule:: nitrokey.trussed.bootloader.lpc55
+   :members:
+   :undoc-members:
+   :show-inheritance:
diff --git a/docs/api/nitrokey.trussed.bootloader.nrf52.rst b/docs/api/nitrokey.trussed.bootloader.nrf52.rst
new file mode 100644
index 0000000..7eb6ad9
--- /dev/null
+++ b/docs/api/nitrokey.trussed.bootloader.nrf52.rst
@@ -0,0 +1,7 @@
+nitrokey.trussed.bootloader.nrf52 module
+========================================
+
+.. automodule:: nitrokey.trussed.bootloader.nrf52
+   :members:
+   :undoc-members:
+   :show-inheritance:
diff --git a/docs/api/nitrokey.trussed.bootloader.rst b/docs/api/nitrokey.trussed.bootloader.rst
new file mode 100644
index 0000000..ab47974
--- /dev/null
+++ b/docs/api/nitrokey.trussed.bootloader.rst
@@ -0,0 +1,19 @@
+nitrokey.trussed.bootloader package
+===================================
+
+Submodules
+----------
+
+.. toctree::
+   :maxdepth: 1
+
+   nitrokey.trussed.bootloader.lpc55
+   nitrokey.trussed.bootloader.nrf52
+
+Module contents
+---------------
+
+.. automodule:: nitrokey.trussed.bootloader
+   :members:
+   :undoc-members:
+   :show-inheritance:
diff --git a/docs/api/nitrokey.trussed.device.rst b/docs/api/nitrokey.trussed.device.rst
new file mode 100644
index 0000000..5710f3d
--- /dev/null
+++ b/docs/api/nitrokey.trussed.device.rst
@@ -0,0 +1,7 @@
+nitrokey.trussed.device module
+==============================
+
+.. automodule:: nitrokey.trussed.device
+   :members:
+   :undoc-members:
+   :show-inheritance:
diff --git a/docs/api/nitrokey.trussed.exceptions.rst b/docs/api/nitrokey.trussed.exceptions.rst
new file mode 100644
index 0000000..54db013
--- /dev/null
+++ b/docs/api/nitrokey.trussed.exceptions.rst
@@ -0,0 +1,7 @@
+nitrokey.trussed.exceptions module
+==================================
+
+.. automodule:: nitrokey.trussed.exceptions
+   :members:
+   :undoc-members:
+   :show-inheritance:
diff --git a/docs/api/nitrokey.trussed.provisioner_app.rst b/docs/api/nitrokey.trussed.provisioner_app.rst
new file mode 100644
index 0000000..a6ad418
--- /dev/null
+++ b/docs/api/nitrokey.trussed.provisioner_app.rst
@@ -0,0 +1,7 @@
+nitrokey.trussed.provisioner\_app module
+========================================
+
+.. automodule:: nitrokey.trussed.provisioner_app
+   :members:
+   :undoc-members:
+   :show-inheritance:
diff --git a/docs/api/nitrokey.trussed.rst b/docs/api/nitrokey.trussed.rst
new file mode 100644
index 0000000..ed4bcab
--- /dev/null
+++ b/docs/api/nitrokey.trussed.rst
@@ -0,0 +1,31 @@
+nitrokey.trussed package
+========================
+
+Subpackages
+-----------
+
+.. toctree::
+   :maxdepth: 1
+
+   nitrokey.trussed.bootloader
+
+Submodules
+----------
+
+.. toctree::
+   :maxdepth: 1
+
+   nitrokey.trussed.admin_app
+   nitrokey.trussed.base
+   nitrokey.trussed.device
+   nitrokey.trussed.exceptions
+   nitrokey.trussed.provisioner_app
+   nitrokey.trussed.utils
+
+Module contents
+---------------
+
+.. automodule:: nitrokey.trussed
+   :members:
+   :undoc-members:
+   :show-inheritance:
diff --git a/docs/api/nitrokey.trussed.utils.rst b/docs/api/nitrokey.trussed.utils.rst
new file mode 100644
index 0000000..7cf7972
--- /dev/null
+++ b/docs/api/nitrokey.trussed.utils.rst
@@ -0,0 +1,7 @@
+nitrokey.trussed.utils module
+=============================
+
+.. automodule:: nitrokey.trussed.utils
+   :members:
+   :undoc-members:
+   :show-inheritance:
diff --git a/docs/api/nitrokey.updates.rst b/docs/api/nitrokey.updates.rst
new file mode 100644
index 0000000..fb3529d
--- /dev/null
+++ b/docs/api/nitrokey.updates.rst
@@ -0,0 +1,7 @@
+nitrokey.updates module
+=======================
+
+.. automodule:: nitrokey.updates
+   :members:
+   :undoc-members:
+   :show-inheritance:
diff --git a/docs/conf.py b/docs/conf.py
new file mode 100644
index 0000000..71cadbd
--- /dev/null
+++ b/docs/conf.py
@@ -0,0 +1,11 @@
+project = 'Nitrokey Python SDK'
+copyright = '2024, Nitrokey'
+author = 'Nitrokey'
+release = '0.1.0'
+extensions = [
+    'sphinx.ext.autodoc',
+]
+html_theme = 'alabaster'
+autodoc_class_signature = 'separated'
+autodoc_member_order = 'groupwise'
+autodoc_typehints = 'description'
diff --git a/docs/index.rst b/docs/index.rst
new file mode 100644
index 0000000..4349f0f
--- /dev/null
+++ b/docs/index.rst
@@ -0,0 +1,8 @@
+Nitrokey Python SDK
+===================
+
+.. toctree::
+   :maxdepth: 2
+   :caption: Contents:
+
+   api/index
diff --git a/poetry.lock b/poetry.lock
index bf635bb..cc91bfd 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,5 +1,16 @@
 # This file is automatically @generated by Poetry 1.7.1 and should not be changed by hand.
 
+[[package]]
+name = "alabaster"
+version = "0.7.16"
+description = "A light, configurable Sphinx theme"
+optional = false
+python-versions = ">=3.9"
+files = [
+    {file = "alabaster-0.7.16-py3-none-any.whl", hash = "sha256:b46733c07dce03ae4e150330b975c75737fa60f0a7c591b6c8bf4928a28e2c92"},
+    {file = "alabaster-0.7.16.tar.gz", hash = "sha256:75a8b99c28a5dad50dd7f8ccdd447a121ddb3892da9e53d1ca5cca3106d58d65"},
+]
+
 [[package]]
 name = "appdirs"
 version = "1.4.4"
@@ -33,6 +44,20 @@ files = [
     {file = "asn1crypto-1.5.1.tar.gz", hash = "sha256:13ae38502be632115abf8a24cbe5f4da52e3b5231990aff31123c805306ccb9c"},
 ]
 
+[[package]]
+name = "babel"
+version = "2.15.0"
+description = "Internationalization utilities"
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "Babel-2.15.0-py3-none-any.whl", hash = "sha256:08706bdad8d0a3413266ab61bd6c34d0c28d6e1e7badf40a2cebe67644e2e1fb"},
+    {file = "babel-2.15.0.tar.gz", hash = "sha256:8daf0e265d05768bc6c7a314cf1321e9a123afc328cc635c18622a2f30a04413"},
+]
+
+[package.extras]
+dev = ["freezegun (>=1.0,<2.0)", "pytest (>=6.0)", "pytest-cov"]
+
 [[package]]
 name = "bincopy"
 version = "17.14.5"
@@ -588,6 +613,17 @@ files = [
     {file = "deepmerge-1.1.1.tar.gz", hash = "sha256:53a489dc9449636e480a784359ae2aab3191748c920649551c8e378622f0eca4"},
 ]
 
+[[package]]
+name = "docutils"
+version = "0.21.2"
+description = "Docutils -- Python Documentation Utilities"
+optional = false
+python-versions = ">=3.9"
+files = [
+    {file = "docutils-0.21.2-py3-none-any.whl", hash = "sha256:dafca5b9e384f0e419294eb4d2ff9fa826435bf15f15b7bd45723e8ad76811b2"},
+    {file = "docutils-0.21.2.tar.gz", hash = "sha256:3a6b18732edf182daa3cd12775bbb338cf5691468f91eeeb109deff6ebfa986f"},
+]
+
 [[package]]
 name = "ecdsa"
 version = "0.19.0"
@@ -769,6 +805,17 @@ files = [
     {file = "idna-3.7.tar.gz", hash = "sha256:028ff3aadf0609c1fd278d8ea3089299412a7a8b9bd005dd08b9f8285bcb5cfc"},
 ]
 
+[[package]]
+name = "imagesize"
+version = "1.4.1"
+description = "Getting image size from png/jpeg/jpeg2000/gif file"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+files = [
+    {file = "imagesize-1.4.1-py2.py3-none-any.whl", hash = "sha256:0d8d18d08f840c19d0ee7ca1fd82490fdc3729b7ac93f49870406ddde8ef8d8b"},
+    {file = "imagesize-1.4.1.tar.gz", hash = "sha256:69150444affb9cb0d5cc5a92b3676f0b2fb7cd9ae39e947a5e11a36b4497cd4a"},
+]
+
 [[package]]
 name = "importlib-metadata"
 version = "8.0.0"
@@ -844,6 +891,23 @@ files = [
 [package.extras]
 colors = ["colorama (>=0.4.6)"]
 
+[[package]]
+name = "jinja2"
+version = "3.1.4"
+description = "A very fast and expressive template engine."
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "jinja2-3.1.4-py3-none-any.whl", hash = "sha256:bc5dd2abb727a5319567b7a813e6a2e7318c39f4f487cfe6c89c6f9c7d25197d"},
+    {file = "jinja2-3.1.4.tar.gz", hash = "sha256:4a3aee7acbbe7303aede8e9648d13b8bf88a429282aa6122a993f0ac800cb369"},
+]
+
+[package.dependencies]
+MarkupSafe = ">=2.0"
+
+[package.extras]
+i18n = ["Babel (>=2.7)"]
+
 [[package]]
 name = "lark"
 version = "1.1.9"
@@ -948,6 +1012,75 @@ files = [
     {file = "libusbsio-2.1.12.tar.gz", hash = "sha256:45d521c229413b0835f5acb73e8df3b31aa5055f454f2ddbb490db3b8604292f"},
 ]
 
+[[package]]
+name = "markupsafe"
+version = "2.1.5"
+description = "Safely add untrusted strings to HTML/XML markup."
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "MarkupSafe-2.1.5-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:a17a92de5231666cfbe003f0e4b9b3a7ae3afb1ec2845aadc2bacc93ff85febc"},
+    {file = "MarkupSafe-2.1.5-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:72b6be590cc35924b02c78ef34b467da4ba07e4e0f0454a2c5907f473fc50ce5"},
+    {file = "MarkupSafe-2.1.5-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:e61659ba32cf2cf1481e575d0462554625196a1f2fc06a1c777d3f48e8865d46"},
+    {file = "MarkupSafe-2.1.5-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:2174c595a0d73a3080ca3257b40096db99799265e1c27cc5a610743acd86d62f"},
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+    {file = "MarkupSafe-2.1.5.tar.gz", hash = "sha256:d283d37a890ba4c1ae73ffadf8046435c76e7bc2247bbb63c00bd1a709c6544b"},
+]
+
 [[package]]
 name = "mccabe"
 version = "0.7.0"
@@ -1205,6 +1338,20 @@ files = [
     {file = "pyflakes-3.2.0.tar.gz", hash = "sha256:1c61603ff154621fb2a9172037d84dca3500def8c8b630657d1701f026f8af3f"},
 ]
 
+[[package]]
+name = "pygments"
+version = "2.18.0"
+description = "Pygments is a syntax highlighting package written in Python."
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "pygments-2.18.0-py3-none-any.whl", hash = "sha256:b8e6aca0523f3ab76fee51799c488e38782ac06eafcf95e7ba832985c8e7b13a"},
+    {file = "pygments-2.18.0.tar.gz", hash = "sha256:786ff802f32e91311bff3889f6e9a86e81505fe99f2735bb6d60ae0c5004f199"},
+]
+
+[package.extras]
+windows-terminal = ["colorama (>=0.4.6)"]
+
 [[package]]
 name = "pylink-square"
 version = "1.2.1"
@@ -1545,6 +1692,17 @@ files = [
     {file = "sly-0.5.tar.gz", hash = "sha256:251d42015e8507158aec2164f06035df4a82b0314ce6450f457d7125e7649024"},
 ]
 
+[[package]]
+name = "snowballstemmer"
+version = "2.2.0"
+description = "This package provides 29 stemmers for 28 languages generated from Snowball algorithms."
+optional = false
+python-versions = "*"
+files = [
+    {file = "snowballstemmer-2.2.0-py2.py3-none-any.whl", hash = "sha256:c8e1716e83cc398ae16824e5572ae04e0d9fc2c6b985fb0f900f5f0c96ecba1a"},
+    {file = "snowballstemmer-2.2.0.tar.gz", hash = "sha256:09b16deb8547d3412ad7b590689584cd0fe25ec8db3be37788be3810cbf19cb1"},
+]
+
 [[package]]
 name = "sortedcontainers"
 version = "2.4.0"
@@ -1556,6 +1714,136 @@ files = [
     {file = "sortedcontainers-2.4.0.tar.gz", hash = "sha256:25caa5a06cc30b6b83d11423433f65d1f9d76c4c6a0c90e3379eaa43b9bfdb88"},
 ]
 
+[[package]]
+name = "sphinx"
+version = "7.4.7"
+description = "Python documentation generator"
+optional = false
+python-versions = ">=3.9"
+files = [
+    {file = "sphinx-7.4.7-py3-none-any.whl", hash = "sha256:c2419e2135d11f1951cd994d6eb18a1835bd8fdd8429f9ca375dc1f3281bd239"},
+    {file = "sphinx-7.4.7.tar.gz", hash = "sha256:242f92a7ea7e6c5b406fdc2615413890ba9f699114a9c09192d7dfead2ee9cfe"},
+]
+
+[package.dependencies]
+alabaster = ">=0.7.14,<0.8.0"
+babel = ">=2.13"
+colorama = {version = ">=0.4.6", markers = "sys_platform == \"win32\""}
+docutils = ">=0.20,<0.22"
+imagesize = ">=1.3"
+importlib-metadata = {version = ">=6.0", markers = "python_version < \"3.10\""}
+Jinja2 = ">=3.1"
+packaging = ">=23.0"
+Pygments = ">=2.17"
+requests = ">=2.30.0"
+snowballstemmer = ">=2.2"
+sphinxcontrib-applehelp = "*"
+sphinxcontrib-devhelp = "*"
+sphinxcontrib-htmlhelp = ">=2.0.0"
+sphinxcontrib-jsmath = "*"
+sphinxcontrib-qthelp = "*"
+sphinxcontrib-serializinghtml = ">=1.1.9"
+tomli = {version = ">=2", markers = "python_version < \"3.11\""}
+
+[package.extras]
+docs = ["sphinxcontrib-websupport"]
+lint = ["flake8 (>=6.0)", "importlib-metadata (>=6.0)", "mypy (==1.10.1)", "pytest (>=6.0)", "ruff (==0.5.2)", "sphinx-lint (>=0.9)", "tomli (>=2)", "types-docutils (==0.21.0.20240711)", "types-requests (>=2.30.0)"]
+test = ["cython (>=3.0)", "defusedxml (>=0.7.1)", "pytest (>=8.0)", "setuptools (>=70.0)", "typing_extensions (>=4.9)"]
+
+[[package]]
+name = "sphinxcontrib-applehelp"
+version = "1.0.8"
+description = "sphinxcontrib-applehelp is a Sphinx extension which outputs Apple help books"
+optional = false
+python-versions = ">=3.9"
+files = [
+    {file = "sphinxcontrib_applehelp-1.0.8-py3-none-any.whl", hash = "sha256:cb61eb0ec1b61f349e5cc36b2028e9e7ca765be05e49641c97241274753067b4"},
+    {file = "sphinxcontrib_applehelp-1.0.8.tar.gz", hash = "sha256:c40a4f96f3776c4393d933412053962fac2b84f4c99a7982ba42e09576a70619"},
+]
+
+[package.extras]
+lint = ["docutils-stubs", "flake8", "mypy"]
+standalone = ["Sphinx (>=5)"]
+test = ["pytest"]
+
+[[package]]
+name = "sphinxcontrib-devhelp"
+version = "1.0.6"
+description = "sphinxcontrib-devhelp is a sphinx extension which outputs Devhelp documents"
+optional = false
+python-versions = ">=3.9"
+files = [
+    {file = "sphinxcontrib_devhelp-1.0.6-py3-none-any.whl", hash = "sha256:6485d09629944511c893fa11355bda18b742b83a2b181f9a009f7e500595c90f"},
+    {file = "sphinxcontrib_devhelp-1.0.6.tar.gz", hash = "sha256:9893fd3f90506bc4b97bdb977ceb8fbd823989f4316b28c3841ec128544372d3"},
+]
+
+[package.extras]
+lint = ["docutils-stubs", "flake8", "mypy"]
+standalone = ["Sphinx (>=5)"]
+test = ["pytest"]
+
+[[package]]
+name = "sphinxcontrib-htmlhelp"
+version = "2.0.6"
+description = "sphinxcontrib-htmlhelp is a sphinx extension which renders HTML help files"
+optional = false
+python-versions = ">=3.9"
+files = [
+    {file = "sphinxcontrib_htmlhelp-2.0.6-py3-none-any.whl", hash = "sha256:1b9af5a2671a61410a868fce050cab7ca393c218e6205cbc7f590136f207395c"},
+    {file = "sphinxcontrib_htmlhelp-2.0.6.tar.gz", hash = "sha256:c6597da06185f0e3b4dc952777a04200611ef563882e0c244d27a15ee22afa73"},
+]
+
+[package.extras]
+lint = ["docutils-stubs", "flake8", "mypy"]
+standalone = ["Sphinx (>=5)"]
+test = ["html5lib", "pytest"]
+
+[[package]]
+name = "sphinxcontrib-jsmath"
+version = "1.0.1"
+description = "A sphinx extension which renders display math in HTML via JavaScript"
+optional = false
+python-versions = ">=3.5"
+files = [
+    {file = "sphinxcontrib-jsmath-1.0.1.tar.gz", hash = "sha256:a9925e4a4587247ed2191a22df5f6970656cb8ca2bd6284309578f2153e0c4b8"},
+    {file = "sphinxcontrib_jsmath-1.0.1-py2.py3-none-any.whl", hash = "sha256:2ec2eaebfb78f3f2078e73666b1415417a116cc848b72e5172e596c871103178"},
+]
+
+[package.extras]
+test = ["flake8", "mypy", "pytest"]
+
+[[package]]
+name = "sphinxcontrib-qthelp"
+version = "1.0.8"
+description = "sphinxcontrib-qthelp is a sphinx extension which outputs QtHelp documents"
+optional = false
+python-versions = ">=3.9"
+files = [
+    {file = "sphinxcontrib_qthelp-1.0.8-py3-none-any.whl", hash = "sha256:323d6acc4189af76dfe94edd2a27d458902319b60fcca2aeef3b2180c106a75f"},
+    {file = "sphinxcontrib_qthelp-1.0.8.tar.gz", hash = "sha256:db3f8fa10789c7a8e76d173c23364bdf0ebcd9449969a9e6a3dd31b8b7469f03"},
+]
+
+[package.extras]
+lint = ["docutils-stubs", "flake8", "mypy"]
+standalone = ["Sphinx (>=5)"]
+test = ["defusedxml (>=0.7.1)", "pytest"]
+
+[[package]]
+name = "sphinxcontrib-serializinghtml"
+version = "1.1.10"
+description = "sphinxcontrib-serializinghtml is a sphinx extension which outputs \"serialized\" HTML files (json and pickle)"
+optional = false
+python-versions = ">=3.9"
+files = [
+    {file = "sphinxcontrib_serializinghtml-1.1.10-py3-none-any.whl", hash = "sha256:326369b8df80a7d2d8d7f99aa5ac577f51ea51556ed974e7716cfd4fca3f6cb7"},
+    {file = "sphinxcontrib_serializinghtml-1.1.10.tar.gz", hash = "sha256:93f3f5dc458b91b192fe10c397e324f262cf163d79f3282c158e8436a2c4511f"},
+]
+
+[package.extras]
+lint = ["docutils-stubs", "flake8", "mypy"]
+standalone = ["Sphinx (>=5)"]
+test = ["pytest"]
+
 [[package]]
 name = "spsdk"
 version = "2.2.0"
@@ -1695,4 +1983,4 @@ test = ["big-O", "importlib-resources", "jaraco.functools", "jaraco.itertools",
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.9"
-content-hash = "3233d5ed964b6e20ed75b692e84caa56c98921f703b3b3acba7754767d34ea74"
+content-hash = "f7310669eab08fe6512b75b12b12fc689c6a49c86bb9b14065f47ac31500453f"
diff --git a/pyproject.toml b/pyproject.toml
index 70e71bf..5282587 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -40,6 +40,7 @@ flake8 = "^7.1"
 isort = "^5.13.2"
 mypy = "^1.4"
 types-requests = "^2.32"
+sphinx = "^7"
 
 [tool.black]
 target-version = ["py39"]
diff --git a/src/nitrokey/__init__.py b/src/nitrokey/__init__.py
index e69de29..d05b856 100644
--- a/src/nitrokey/__init__.py
+++ b/src/nitrokey/__init__.py
@@ -0,0 +1,3 @@
+"""
+Nitrokey Python SDK
+"""
diff --git a/src/nitrokey/nk3/secrets_app.py b/src/nitrokey/nk3/secrets_app.py
index e1b6bc6..c2753c7 100644
--- a/src/nitrokey/nk3/secrets_app.py
+++ b/src/nitrokey/nk3/secrets_app.py
@@ -650,6 +650,7 @@ def encode_properties_to_send(
     def calculate(self, cred_id: bytes, challenge: Optional[int] = None) -> bytes:
         """
         Calculate the OTP code for the credential named `cred_id`, and with challenge `challenge`.
+
         :param cred_id: The name of the credential
         :param challenge: Challenge for the calculations (TOTP only).
             Should be equal to: timestamp/period. The commonly used period value is 30.