feat!: change bedrock bearer token env variable to match AWS docs & boto3 convention (#4152)

Rename `AWS_BEDROCK_API_KEY` to `AWS_BEARER_TOKEN_BEDROCK` to align with
the naming convention used in AWS Bedrock documentation and the AWS web
console UI. This reduces confusion when developers compare LLS docs with
AWS docs.

Closes #4147

Author: ktdreyer

docs/docs/providers/inference/remote_bedrock.mdx

@@ -22,6 +22,6 @@ AWS Bedrock inference provider using OpenAI compatible endpoint.
 ## Sample Configuration
 
 ```yaml
-api_key: ${env.AWS_BEDROCK_API_KEY:=}
+api_key: ${env.AWS_BEARER_TOKEN_BEDROCK:=}
 region_name: ${env.AWS_DEFAULT_REGION:=us-east-2}
 ```

src/llama_stack/distributions/ci-tests/run-with-postgres-store.yaml

@@ -47,7 +47,7 @@ providers:
   - provider_id: bedrock
     provider_type: remote::bedrock
     config:
-      api_key: ${env.AWS_BEDROCK_API_KEY:=}
+      api_key: ${env.AWS_BEARER_TOKEN_BEDROCK:=}
       region_name: ${env.AWS_DEFAULT_REGION:=us-east-2}
   - provider_id: ${env.NVIDIA_API_KEY:+nvidia}
     provider_type: remote::nvidia

src/llama_stack/distributions/ci-tests/run.yaml

@@ -47,7 +47,7 @@ providers:
   - provider_id: bedrock
     provider_type: remote::bedrock
     config:
-      api_key: ${env.AWS_BEDROCK_API_KEY:=}
+      api_key: ${env.AWS_BEARER_TOKEN_BEDROCK:=}
       region_name: ${env.AWS_DEFAULT_REGION:=us-east-2}
   - provider_id: ${env.NVIDIA_API_KEY:+nvidia}
     provider_type: remote::nvidia

src/llama_stack/distributions/starter-gpu/run-with-postgres-store.yaml

@@ -47,7 +47,7 @@ providers:
   - provider_id: bedrock
     provider_type: remote::bedrock
     config:
-      api_key: ${env.AWS_BEDROCK_API_KEY:=}
+      api_key: ${env.AWS_BEARER_TOKEN_BEDROCK:=}
       region_name: ${env.AWS_DEFAULT_REGION:=us-east-2}
   - provider_id: ${env.NVIDIA_API_KEY:+nvidia}
     provider_type: remote::nvidia

src/llama_stack/distributions/starter-gpu/run.yaml

@@ -47,7 +47,7 @@ providers:
   - provider_id: bedrock
     provider_type: remote::bedrock
     config:
-      api_key: ${env.AWS_BEDROCK_API_KEY:=}
+      api_key: ${env.AWS_BEARER_TOKEN_BEDROCK:=}
       region_name: ${env.AWS_DEFAULT_REGION:=us-east-2}
   - provider_id: ${env.NVIDIA_API_KEY:+nvidia}
     provider_type: remote::nvidia

src/llama_stack/distributions/starter/run-with-postgres-store.yaml

@@ -47,7 +47,7 @@ providers:
   - provider_id: bedrock
     provider_type: remote::bedrock
     config:
-      api_key: ${env.AWS_BEDROCK_API_KEY:=}
+      api_key: ${env.AWS_BEARER_TOKEN_BEDROCK:=}
       region_name: ${env.AWS_DEFAULT_REGION:=us-east-2}
   - provider_id: ${env.NVIDIA_API_KEY:+nvidia}
     provider_type: remote::nvidia

src/llama_stack/distributions/starter/run.yaml

@@ -47,7 +47,7 @@ providers:
   - provider_id: bedrock
     provider_type: remote::bedrock
     config:
-      api_key: ${env.AWS_BEDROCK_API_KEY:=}
+      api_key: ${env.AWS_BEARER_TOKEN_BEDROCK:=}
       region_name: ${env.AWS_DEFAULT_REGION:=us-east-2}
   - provider_id: ${env.NVIDIA_API_KEY:+nvidia}
     provider_type: remote::nvidia

src/llama_stack/providers/remote/inference/bedrock/bedrock.py

@@ -37,7 +37,7 @@ class BedrockInferenceAdapter(OpenAIMixin):
     """
 
     config: BedrockConfig
-    provider_data_api_key_field: str = "aws_bedrock_api_key"
+    provider_data_api_key_field: str = "aws_bearer_token_bedrock"
 
     def get_base_url(self) -> str:
         """Get base URL for OpenAI client."""
@@ -111,7 +111,7 @@ async def openai_chat_completion(
                 logger.error(f"AWS Bedrock authentication token expired: {error_msg}")
                 raise ValueError(
                     "AWS Bedrock authentication failed: Bearer token has expired. "
-                    "The AWS_BEDROCK_API_KEY environment variable contains an expired pre-signed URL. "
+                    "The AWS_BEARER_TOKEN_BEDROCK environment variable contains an expired pre-signed URL. "
                     "Please refresh your token by generating a new pre-signed URL with AWS credentials. "
                     "Refer to AWS Bedrock documentation for details on OpenAI-compatible endpoints."
                 ) from e

src/llama_stack/providers/remote/inference/bedrock/config.py

@@ -12,9 +12,9 @@
 
 
 class BedrockProviderDataValidator(BaseModel):
-    aws_bedrock_api_key: str | None = Field(
+    aws_bearer_token_bedrock: str | None = Field(
         default=None,
-        description="API key for Amazon Bedrock",
+        description="API Key (Bearer token) for Amazon Bedrock",
     )
 
 
@@ -27,6 +27,6 @@ class BedrockConfig(RemoteInferenceProviderConfig):
     @classmethod
     def sample_run_config(cls, **kwargs):
         return {
-            "api_key": "${env.AWS_BEDROCK_API_KEY:=}",
+            "api_key": "${env.AWS_BEARER_TOKEN_BEDROCK:=}",
             "region_name": "${env.AWS_DEFAULT_REGION:=us-east-2}",
         }

tests/unit/providers/inference/test_bedrock_adapter.py

@@ -40,8 +40,8 @@ def test_api_key_from_header_overrides_config():
     """Test API key from request header overrides config via client property"""
     config = BedrockConfig(api_key="config-key", region_name="us-east-1")
     adapter = BedrockInferenceAdapter(config=config)
-    adapter.provider_data_api_key_field = "aws_bedrock_api_key"
-    adapter.get_request_provider_data = MagicMock(return_value=SimpleNamespace(aws_bedrock_api_key="header-key"))
+    adapter.provider_data_api_key_field = "aws_bearer_token_bedrock"
+    adapter.get_request_provider_data = MagicMock(return_value=SimpleNamespace(aws_bearer_token_bedrock="header-key"))
 
     # The client property is where header override happens (in OpenAIMixin)
     assert adapter.client.api_key == "header-key"