Developed and integrated bearer token authentication into the aws/sagemaker-python-sdk by embedding the SageMaker token generator directly within sagemaker-core, removing the need for a separate installation and simplifying user onboarding. Focused on Python-based API development and AWS SDK integration, the work included comprehensive unit testing to ensure reliability across token formats, encoding, versioning, and multi-region support. The approach emphasized test-driven development, aligning coverage with Bedrock token generator standards to validate credential handling and expiry logic. This feature streamlined authentication flows, reduced dependency friction, and enabled faster, safer adoption of SageMaker services without addressing major bug fixes during the period.