Developed an extensible authentication configuration and session management feature for the browserbase/stagehand repository, focusing on enabling a vendor-agnostic authentication flow for AI providers. Leveraging TypeScript and full stack development skills, the work introduced provider-specific authentication options in the model configuration, allowing seamless integration of providers like Bedrock and Vertex without altering the shared schema. The implementation made API keys optional and established session-scoped client options, which are reused across multiple calls to streamline provider interactions. Server-side logic merges stored session options with per-request configurations, laying a foundation for future provider integrations while reducing onboarding complexity and configuration overhead.