From aef2b14e6bdc2d57e66bca3853d08aab54ebab15 Mon Sep 17 00:00:00 2001
From: Tianyi Chen <TianyiChen@users.noreply.github.com>
Date: Thu, 23 Apr 2026 19:29:17 -0700
Subject: [PATCH] fix(bedrock): opt into httpBearerAuth when apiKey is set

---
 core/llm/llms/Bedrock.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/core/llm/llms/Bedrock.ts b/core/llm/llms/Bedrock.ts
index bc9566cbecc..c65035f2531 100644
--- a/core/llm/llms/Bedrock.ts
+++ b/core/llm/llms/Bedrock.ts
@@ -77,7 +77,8 @@ class Bedrock extends BaseLLM {
         region: this.region,
         endpoint: this.apiBase,
         token: async () => ({ token: this.apiKey! }),
-      });
+        authSchemePreference: ["httpBearerAuth"],
+      } as any);
     }
 
     // IAM credential authentication