From 303f95374bebf51a9e4e6ccd5d77f6c662487f0d Mon Sep 17 00:00:00 2001
From: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Date: Thu, 8 Oct 2026 21:37:28 +0000
Subject: [PATCH] fix(bedrock): mark retrieval request metadata handoffs

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
---
 litellm/llms/bedrock/files/transformation.py | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/litellm/llms/bedrock/files/transformation.py b/litellm/llms/bedrock/files/transformation.py
index 2355d828bbc..5c5d6e73417 100644
--- a/litellm/llms/bedrock/files/transformation.py
+++ b/litellm/llms/bedrock/files/transformation.py
@@ -1378,10 +1378,11 @@ class BedrockFilesConfig(BaseAWSLLM, BaseFilesConfig):
         if not isinstance(signed_headers_object, Mapping):
             raise TypeError("S3 request signing did not produce request headers")
         signed_headers: Final = _S3_SIGNED_REQUEST_HEADERS_ADAPTER.validate_python(signed_headers_object)
-        litellm_params[S3_SIGNED_REQUEST_HEADERS_PARAM] = MappingProxyType({**signed_headers, "Range": "bytes=0-0"})
-        litellm_params[S3_RETRIEVE_FILE_ID_PARAM] = file_id
-        litellm_params[S3_RETRIEVE_FILE_KEY_PARAM] = object_key
-        litellm_params[S3_RETRIEVE_FILE_RELATIVE_KEY_PARAM] = relative_key
+        range_headers: Final = MappingProxyType({**signed_headers, "Range": "bytes=0-0"})
+        litellm_params[S3_SIGNED_REQUEST_HEADERS_PARAM] = range_headers  # rebind-ok: handed to validate_environment
+        litellm_params[S3_RETRIEVE_FILE_ID_PARAM] = file_id  # rebind-ok: required by response transform
+        litellm_params[S3_RETRIEVE_FILE_KEY_PARAM] = object_key  # rebind-ok: required by response transform
+        litellm_params[S3_RETRIEVE_FILE_RELATIVE_KEY_PARAM] = relative_key  # rebind-ok: required by response transform
         return url, params
 
     def transform_retrieve_file_response(