From f0bbe4d95e609bd936b2afd6ed3a11d14ffb0552 Mon Sep 17 00:00:00 2001
From: Vincent Koc <vincentkoc@ieee.org>
Date: Thu, 11 Jun 2026 06:52:11 +0900
Subject: [PATCH] fix(bedrock): guard Mantle thinking options

---
 extensions/amazon-bedrock-mantle/mantle-anthropic.runtime.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/extensions/amazon-bedrock-mantle/mantle-anthropic.runtime.ts b/extensions/amazon-bedrock-mantle/mantle-anthropic.runtime.ts
index 7b8e581ba7a3..395fc23ec842 100644
--- a/extensions/amazon-bedrock-mantle/mantle-anthropic.runtime.ts
+++ b/extensions/amazon-bedrock-mantle/mantle-anthropic.runtime.ts
@@ -148,7 +148,7 @@ export function createMantleAnthropicStreamFn(deps?: {
       base.maxTokens || 0,
       model.maxTokens,
       reasoning,
-      options.thinkingBudgets,
+      options?.thinkingBudgets,
     );
     return streamFn(model as Model<"anthropic-messages">, context, {
       ...base,