diff --git a/agents-api/agents_api/models/user/create_or_update_user.py b/agents-api/agents_api/models/user/create_or_update_user.py
index d295d1d8a..13260a038 100644
--- a/agents-api/agents_api/models/user/create_or_update_user.py
+++ b/agents-api/agents_api/models/user/create_or_update_user.py
@@ -26,9 +26,21 @@
 
 @rewrap_exceptions(
     {
-        QueryException: partialclass(HTTPException, status_code=400),
-        ValidationError: partialclass(HTTPException, status_code=400),
-        TypeError: partialclass(HTTPException, status_code=400),
+        QueryException: partialclass(
+            HTTPException,
+            status_code=400,
+            detail="A database query failed to return the expected results. This might occur if the requested resource doesn't exist or your query parameters are incorrect.",
+        ),
+        ValidationError: partialclass(
+            HTTPException,
+            status_code=400,
+            detail="Input validation failed. Please check the provided data for missing or incorrect fields, and ensure it matches the required format.",
+        ),
+        TypeError: partialclass(
+            HTTPException,
+            status_code=400,
+            detail="A type mismatch occurred. This likely means the data provided is of an incorrect type (e.g., string instead of integer). Please review the input and try again.",
+        ),
     }
 )
 @wrap_in_class(User, one=True, transform=lambda d: {"id": UUID(d.pop("user_id")), **d})
diff --git a/agents-api/agents_api/models/user/create_user.py b/agents-api/agents_api/models/user/create_user.py
index 9dd036c57..270c0d44c 100644
--- a/agents-api/agents_api/models/user/create_user.py
+++ b/agents-api/agents_api/models/user/create_user.py
@@ -29,11 +29,24 @@
         lambda e: isinstance(e, QueryException)
         and "asserted to return some results, but returned none"
         in str(e): lambda *_: HTTPException(
-            detail="developer not found", status_code=403
+            detail="Developer not found. Please ensure the provided auth token (which refers to your developer_id) is valid and the developer has the necessary permissions to create an agent.",
+            status_code=403,
+        ),
+        QueryException: partialclass(
+            HTTPException,
+            status_code=400,
+            detail="A database query failed to return the expected results. This might occur if the requested resource doesn't exist or your query parameters are incorrect.",
+        ),
+        ValidationError: partialclass(
+            HTTPException,
+            status_code=400,
+            detail="Input validation failed. Please check the provided data for missing or incorrect fields, and ensure it matches the required format.",
+        ),
+        TypeError: partialclass(
+            HTTPException,
+            status_code=400,
+            detail="A type mismatch occurred. This likely means the data provided is of an incorrect type (e.g., string instead of integer). Please review the input and try again.",
         ),
-        QueryException: partialclass(HTTPException, status_code=400),
-        ValidationError: partialclass(HTTPException, status_code=400),
-        TypeError: partialclass(HTTPException, status_code=400),
     }
 )
 @wrap_in_class(
diff --git a/agents-api/agents_api/models/user/delete_user.py b/agents-api/agents_api/models/user/delete_user.py
index 0532f5cfa..7f08316be 100644
--- a/agents-api/agents_api/models/user/delete_user.py
+++ b/agents-api/agents_api/models/user/delete_user.py
@@ -27,9 +27,32 @@
 
 @rewrap_exceptions(
     {
-        QueryException: partialclass(HTTPException, status_code=400),
-        ValidationError: partialclass(HTTPException, status_code=400),
-        TypeError: partialclass(HTTPException, status_code=400),
+        lambda e: isinstance(e, QueryException)
+        and "Developer does not exist" in str(e): lambda *_: HTTPException(
+            detail="The specified developer does not exist.",
+            status_code=403,
+        ),
+        lambda e: isinstance(e, QueryException)
+        and "Developer does not own resource"
+        in e.resp["display"]: lambda *_: HTTPException(
+            detail="The specified developer does not own the requested resource. Please verify the ownership or check if the developer ID is correct.",
+            status_code=404,
+        ),
+        QueryException: partialclass(
+            HTTPException,
+            status_code=400,
+            detail="A database query failed to return the expected results. This might occur if the requested resource doesn't exist or your query parameters are incorrect.",
+        ),
+        ValidationError: partialclass(
+            HTTPException,
+            status_code=400,
+            detail="Input validation failed. Please check the provided data for missing or incorrect fields, and ensure it matches the required format.",
+        ),
+        TypeError: partialclass(
+            HTTPException,
+            status_code=400,
+            detail="A type mismatch occurred. This likely means the data provided is of an incorrect type (e.g., string instead of integer). Please review the input and try again.",
+        ),
     }
 )
 @wrap_in_class(
diff --git a/agents-api/agents_api/models/user/get_user.py b/agents-api/agents_api/models/user/get_user.py
index 2b4f59c83..34ff2c6f4 100644
--- a/agents-api/agents_api/models/user/get_user.py
+++ b/agents-api/agents_api/models/user/get_user.py
@@ -23,17 +23,31 @@
 @rewrap_exceptions(
     {
         lambda e: isinstance(e, QueryException)
-        and "Developer not found" in str(e): lambda *_: HTTPException(
-            detail="developer does not exist", status_code=403
+        and "Developer does not exist" in str(e): lambda *_: HTTPException(
+            detail="The specified developer does not exist.",
+            status_code=403,
         ),
         lambda e: isinstance(e, QueryException)
         and "Developer does not own resource"
         in e.resp["display"]: lambda *_: HTTPException(
-            detail="developer doesnt own resource", status_code=404
+            detail="The specified developer does not own the requested resource. Please verify the ownership or check if the developer ID is correct.",
+            status_code=404,
+        ),
+        QueryException: partialclass(
+            HTTPException,
+            status_code=400,
+            detail="A database query failed to return the expected results. This might occur if the requested resource doesn't exist or your query parameters are incorrect.",
+        ),
+        ValidationError: partialclass(
+            HTTPException,
+            status_code=400,
+            detail="Input validation failed. Please check the provided data for missing or incorrect fields, and ensure it matches the required format.",
+        ),
+        TypeError: partialclass(
+            HTTPException,
+            status_code=400,
+            detail="A type mismatch occurred. This likely means the data provided is of an incorrect type (e.g., string instead of integer). Please review the input and try again.",
         ),
-        QueryException: partialclass(HTTPException, status_code=400),
-        ValidationError: partialclass(HTTPException, status_code=400),
-        TypeError: partialclass(HTTPException, status_code=400),
     }
 )
 @wrap_in_class(User, one=True)
diff --git a/agents-api/agents_api/models/user/list_users.py b/agents-api/agents_api/models/user/list_users.py
index 2a810b8e0..7f59cbf57 100644
--- a/agents-api/agents_api/models/user/list_users.py
+++ b/agents-api/agents_api/models/user/list_users.py
@@ -22,9 +22,21 @@
 
 @rewrap_exceptions(
     {
-        QueryException: partialclass(HTTPException, status_code=400),
-        ValidationError: partialclass(HTTPException, status_code=400),
-        TypeError: partialclass(HTTPException, status_code=400),
+        QueryException: partialclass(
+            HTTPException,
+            status_code=400,
+            detail="A database query failed to return the expected results. This might occur if the requested resource doesn't exist or your query parameters are incorrect.",
+        ),
+        ValidationError: partialclass(
+            HTTPException,
+            status_code=400,
+            detail="Input validation failed. Please check the provided data for missing or incorrect fields, and ensure it matches the required format.",
+        ),
+        TypeError: partialclass(
+            HTTPException,
+            status_code=400,
+            detail="A type mismatch occurred. This likely means the data provided is of an incorrect type (e.g., string instead of integer). Please review the input and try again.",
+        ),
     }
 )
 @wrap_in_class(User)
diff --git a/agents-api/agents_api/models/user/patch_user.py b/agents-api/agents_api/models/user/patch_user.py
index 265241d47..152f66de7 100644
--- a/agents-api/agents_api/models/user/patch_user.py
+++ b/agents-api/agents_api/models/user/patch_user.py
@@ -26,9 +26,21 @@
 
 @rewrap_exceptions(
     {
-        QueryException: partialclass(HTTPException, status_code=400),
-        ValidationError: partialclass(HTTPException, status_code=400),
-        TypeError: partialclass(HTTPException, status_code=400),
+        QueryException: partialclass(
+            HTTPException,
+            status_code=400,
+            detail="A database query failed to return the expected results. This might occur if the requested resource doesn't exist or your query parameters are incorrect.",
+        ),
+        ValidationError: partialclass(
+            HTTPException,
+            status_code=400,
+            detail="Input validation failed. Please check the provided data for missing or incorrect fields, and ensure it matches the required format.",
+        ),
+        TypeError: partialclass(
+            HTTPException,
+            status_code=400,
+            detail="A type mismatch occurred. This likely means the data provided is of an incorrect type (e.g., string instead of integer). Please review the input and try again.",
+        ),
     }
 )
 @wrap_in_class(
diff --git a/agents-api/agents_api/models/user/update_user.py b/agents-api/agents_api/models/user/update_user.py
index fd8e7e2c8..964e550b4 100644
--- a/agents-api/agents_api/models/user/update_user.py
+++ b/agents-api/agents_api/models/user/update_user.py
@@ -23,9 +23,21 @@
 
 @rewrap_exceptions(
     {
-        QueryException: partialclass(HTTPException, status_code=400),
-        ValidationError: partialclass(HTTPException, status_code=400),
-        TypeError: partialclass(HTTPException, status_code=400),
+        QueryException: partialclass(
+            HTTPException,
+            status_code=400,
+            detail="A database query failed to return the expected results. This might occur if the requested resource doesn't exist or your query parameters are incorrect.",
+        ),
+        ValidationError: partialclass(
+            HTTPException,
+            status_code=400,
+            detail="Input validation failed. Please check the provided data for missing or incorrect fields, and ensure it matches the required format.",
+        ),
+        TypeError: partialclass(
+            HTTPException,
+            status_code=400,
+            detail="A type mismatch occurred. This likely means the data provided is of an incorrect type (e.g., string instead of integer). Please review the input and try again.",
+        ),
     }
 )
 @wrap_in_class(