diff --git a/config/limits.py b/config/limits.py
index dfecdb2d..68ee1190 100644
--- a/config/limits.py
+++ b/config/limits.py
@@ -97,6 +97,7 @@ __all__ = [
     "CODE_EXECUTION_TIMEOUT",
     "TERMINAL_COMMAND_TIMEOUT",
     "SEARCH_MAX_RESULTS",
+    "MAX_MESSAGE_CHARS",
     "AUTO_FIX_TOOL_CALL",
     "AUTO_FIX_MAX_ATTEMPTS",
     "MAX_ITERATIONS_PER_TASK",