From 10e9e0cdc9ecc75fd360830abcc3c9f8ccfc20e5 Mon Sep 17 00:00:00 2001
From: The Mavik <179817126+themavik@users.noreply.github.com>
Date: Fri, 13 Feb 2026 17:08:10 -0500
Subject: [PATCH] fix(providers): clamp max_tokens to >= 1 before calling
 LiteLLM (#523)

---
 nanobot/providers/litellm_provider.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/nanobot/providers/litellm_provider.py b/nanobot/providers/litellm_provider.py
index 7865139..a39893b 100644
--- a/nanobot/providers/litellm_provider.py
+++ b/nanobot/providers/litellm_provider.py
@@ -122,6 +122,10 @@ class LiteLLMProvider(LLMProvider):
         """
         model = self._resolve_model(model or self.default_model)
         
+        # Clamp max_tokens to at least 1 — negative or zero values cause
+        # LiteLLM to reject the request with "max_tokens must be at least 1".
+        max_tokens = max(1, max_tokens)
+        
         kwargs: dict[str, Any] = {
             "model": model,
             "messages": messages,