From 2ac2bd1b55f4b12876702c2d89a9b00bb7deec60 Mon Sep 17 00:00:00 2001
From: cthomas <caren@letta.com>
Date: Thu, 1 May 2025 11:03:34 -0700
Subject: [PATCH] fix: openai illegal char in name check (#1971)

---
 letta/schemas/message.py | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/letta/schemas/message.py b/letta/schemas/message.py
index 2c273bb6..e12fcb0d 100644
--- a/letta/schemas/message.py
+++ b/letta/schemas/message.py
@@ -2,6 +2,7 @@ from __future__ import annotations
 
 import copy
 import json
+import re
 import uuid
 import warnings
 from collections import OrderedDict
@@ -700,9 +701,12 @@ class Message(BaseMessage):
         else:
             raise ValueError(self.role)
 
-        # Optional field, do not include if null
+        # Optional field, do not include if null or invalid
         if self.name is not None:
-            openai_message["name"] = self.name
+            if bool(re.match(r"^[^\s<|\\/>]+$", self.name)):
+                warnings.warn(f"Using OpenAI with invalid 'name' field (name={self.name} role={self.role}).")
+            else:
+                openai_message["name"] = self.name
 
         if parse_content_parts:
             for content in self.content: