AWS Weekly Roundup: Amazon Bedrock agent workflows, Amazon SageMaker private connectivity, and more (February 2, 2026)

Amazon Bedrock added server-side tool support to the Responses API, responses API now supports server-side tool use in Amazon Bedrock.

Introduced 1-hour prompt caching time-to-live for select models, amazon Bedrock added a one-hour TTL option for prompt caching for select models.

Models OpenAI GPT OSS 20B and 120B support Bedrock server-side tools server-side tools are available with OpenAI GPT OSS 20B and 120B models.

Amazon SageMaker Unified Studio added AWS PrivateLink support for private VPC connectivity, sageMaker Unified Studio supports private connectivity using AWS PrivateLink.

SageMaker service endpoints route data traffic within the AWS network and govern access with IAM policies onboarded SageMaker service endpoints keep data traffic within the AWS network and use IAM policies.