diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..a130eea
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+*.so
+/*.egg-info/
+/build/
diff --git a/src/cobs/__init__.pyi b/src/cobs/__init__.pyi
new file mode 100644
index 0000000..d3f70a4
--- /dev/null
+++ b/src/cobs/__init__.pyi
@@ -0,0 +1,7 @@
+from cobs._version import (
+    VERSION_MAJOR as VERSION_MAJOR,
+    VERSION_MINOR as VERSION_MINOR,
+    VERSION_PATCH as VERSION_PATCH,
+    VERSION_STRING as VERSION_STRING,
+    __version__ as __version__,
+)
diff --git a/src/cobs/_version/__init__.pyi b/src/cobs/_version/__init__.pyi
new file mode 100644
index 0000000..863d010
--- /dev/null
+++ b/src/cobs/_version/__init__.pyi
@@ -0,0 +1,15 @@
+from typing import Final
+
+__all__: Final = (
+    'VERSION_MAJOR',
+    'VERSION_MINOR',
+    'VERSION_PATCH',
+    'VERSION_STRING',
+    '__version__',
+)
+
+VERSION_MAJOR: Final[int]
+VERSION_MINOR: Final[int]
+VERSION_PATCH: Final[int]
+VERSION_STRING: Final[str]
+__version__: Final[str]
diff --git a/src/cobs/cobs/__init__.pyi b/src/cobs/cobs/__init__.pyi
new file mode 100644
index 0000000..66ec0b8
--- /dev/null
+++ b/src/cobs/cobs/__init__.pyi
@@ -0,0 +1,14 @@
+from cobs._version import (
+    VERSION_MAJOR as VERSION_MAJOR,
+    VERSION_MINOR as VERSION_MINOR,
+    VERSION_PATCH as VERSION_PATCH,
+    VERSION_STRING as VERSION_STRING,
+    __version__ as __version__,
+)
+
+class DecodeError(Exception): ...
+
+def encode(in_bytes: bytes, /) -> bytes: ...
+def decode(in_bytes: bytes, /) -> bytes: ...
+def encoding_overhead(source_len: int) -> int: ...
+def max_encoded_length(source_len: int) -> int: ...
diff --git a/src/cobs/cobsr/__init__.pyi b/src/cobs/cobsr/__init__.pyi
new file mode 100644
index 0000000..66ec0b8
--- /dev/null
+++ b/src/cobs/cobsr/__init__.pyi
@@ -0,0 +1,14 @@
+from cobs._version import (
+    VERSION_MAJOR as VERSION_MAJOR,
+    VERSION_MINOR as VERSION_MINOR,
+    VERSION_PATCH as VERSION_PATCH,
+    VERSION_STRING as VERSION_STRING,
+    __version__ as __version__,
+)
+
+class DecodeError(Exception): ...
+
+def encode(in_bytes: bytes, /) -> bytes: ...
+def decode(in_bytes: bytes, /) -> bytes: ...
+def encoding_overhead(source_len: int) -> int: ...
+def max_encoded_length(source_len: int) -> int: ...
diff --git a/src/cobs/py.typed b/src/cobs/py.typed
new file mode 100644
index 0000000..e69de29