diff --git a/afids_utils/afids.py b/afids_utils/afids.py
index 968e90d0..cb967ef0 100644
--- a/afids_utils/afids.py
+++ b/afids_utils/afids.py
@@ -11,9 +11,27 @@
 from afids_utils.exceptions import InvalidFiducialError, InvalidFileError
 
 
-@attrs.define
+@attrs.define(kw_only=True)
 class AfidPosition:
-    """Base class for a single AFID position"""
+    """Base class for a single AFID position
+
+    Parameters
+    ----------
+    label
+        Unique label for AFID
+
+    x
+        Spatial position along x-axis (in mm)
+
+    y
+        Spatial position along y-axis (in mm)
+
+    z
+        Spatial position along z-axis (in mm)
+
+    desc
+        Description for AFID (e.g. AC, PC)
+    """
 
     label: int = attrs.field()
     x: float = attrs.field()
@@ -22,9 +40,21 @@ class AfidPosition:
     desc: str = attrs.field(default="")
 
 
-@attrs.define
+@attrs.define(kw_only=True)
 class AfidSet:
-    """Base class for a set of AFIDs"""
+    """Base class for a set of AFIDs
+
+    Parameters
+    ----------
+    slicer_version
+        Version of Slicer associated with AfidSet
+
+    coord_system
+        Coordinate system AFIDs are placed in (e.g. RAS)
+
+    afids
+        List of AFID labels and their coordinates
+    """
 
     slicer_version: str = attrs.field()
     coord_system: str = attrs.field()
diff --git a/afids_utils/exceptions.py b/afids_utils/exceptions.py
index aa90c5a6..b8722656 100644
--- a/afids_utils/exceptions.py
+++ b/afids_utils/exceptions.py
@@ -1,4 +1,4 @@
-"""Custom exceptions"""
+"""Custom exceptions to raise for various errors"""
 
 
 class InvalidFileError(Exception):
@@ -11,5 +11,5 @@ def __init__(self, message):
 class InvalidFiducialError(Exception):
     """Exception for invalid fiducial selection"""
 
-    def __init__(self, message) -> None:
+    def __init__(self, message):
         super().__init__(message)
diff --git a/docs/api/afids.md b/docs/api/afids.md
index e47b3cb9..6f0dfc90 100644
--- a/docs/api/afids.md
+++ b/docs/api/afids.md
@@ -1,9 +1,14 @@
 ## afids_utils.afids
 
 ```{eval-rst}
-    .. autoclass: afids_utils.afids.AfidPosition
+    .. autoclass:: afids_utils.afids.AfidPosition
         :members:
+        :exclude-members: label, desc, x, y, z
 
+```
+
+```{eval-rst}
     .. autoclass:: afids_utils.afids.AfidSet
         :members:
-```
\ No newline at end of file
+        :exclude-members: slicer_version, coord_system, afids
+```
diff --git a/docs/exceptions/exceptions.md b/docs/exceptions/exceptions.md
index 33b1fc91..dbadd2d2 100644
--- a/docs/exceptions/exceptions.md
+++ b/docs/exceptions/exceptions.md
@@ -1,9 +1,6 @@
 ## afids_utils.exceptions
 
 ```{eval-rst}
-    .. autoclass: afids_utils.exceptions.InvalidFileError
+    .. automodule:: afids_utils.exceptions
         :members:
-
-    .. autoclass:: afids_utils.exceptions.InvalidFiducialError
-        :members:
-```
\ No newline at end of file
+```