diff --git a/asab/web/auth/authorization.py b/asab/web/auth/authorization.py
index 6cc78c6b..e152b2be 100644
--- a/asab/web/auth/authorization.py
+++ b/asab/web/auth/authorization.py
@@ -14,8 +14,26 @@
 class Authorization:
 	"""
 	Contains authentication and authorization claims, provides methods for checking and enforcing access control.
+
+	Attributes:
+		CredentialsId (str):
+			Unique identifier of the authorized entity in the ASAB ecosystem.
+			Usually corresponds to JWT attribute "sub".
+		Username (str): End-user's preferred username.
+		Email (str): End-user email address.
+		Phone (str): End-user phone number.
+		SessionId (str): Sign-on session identifier.
+		Issuer (str): Unique identifier of the server that issued the authorization.
+		IssuedAt (datetime.datetime): Timestamp when the authorization was issued.
+		Expiration (datetime.datetime): Timestamp when the authorization expires.
 	"""
 	def __init__(self, claims: dict):
+		"""
+		Initialize Authorization object from authorization server claims.
+
+		Args:
+			claims (dict): Authorization server claims (from ID token, UserInfo etc.).
+		"""
 		# Userinfo should not be accessed directly
 		self._Claims = claims or {}
 		self._Resources = self._Claims.get("resources", {})