diff --git a/openbrain/orm/model_client.py b/openbrain/orm/model_client.py
index d135279..955f340 100644
--- a/openbrain/orm/model_client.py
+++ b/openbrain/orm/model_client.py
@@ -2,8 +2,7 @@
 
 from typing import TypeAlias, Optional
 
-from pydantic import BaseModel, Field, Extra
-from openbrain.orm.model_agent_config import AgentConfig
+from pydantic import BaseModel, Field
 from openbrain.util import config, Defaults
 
 if config.OB_MODE == Defaults.OB_MODE_LOCAL.value:
diff --git a/openbrain/tools/models/model_leadmo_contact.py b/openbrain/tools/models/model_leadmo_contact.py
index 284d1af..91a4475 100644
--- a/openbrain/tools/models/model_leadmo_contact.py
+++ b/openbrain/tools/models/model_leadmo_contact.py
@@ -36,7 +36,7 @@ class Config:
     firstName: Optional[str] = Field(default=None, description="The contact's first name")
     lastName: Optional[str] = Field(default=None, description="The contact's last name")
     name: Optional[str] = Field(default=None, description="The contact's full name")
-    dateOfBirth: Optional[str] = Field(default=None, description="The contact's date of birth. Users must be between 18 and 100 years old.")
+    dateOfBirth: Optional[str] = Field(default=None, description="The contact's date of birth. Users must be between 18 and 100 years old. Input as YYYY-MM-DD (e.g. 1990-01-01)")
     phone: Optional[str] = Field(default=None, description="The contact's phone number")
     email: Optional[str] = Field(default=None, description="The contact's email address")
     address1: Optional[str] = Field(default=None, description="The contact's address line 1")