Worked on the envoyproxy/ai-gateway repository to deliver authorization filtering for the tools/list API endpoint, ensuring that only tools permitted by the caller’s access rights are visible. This feature was implemented in Go and focused on backend development and authorization management, reusing existing authorization logic from tool invocation flows to maintain consistency across the platform. By filtering tool visibility at the API level, the work reduced unnecessary API calls and prevented exposure of sensitive tool metadata, directly addressing security and performance concerns. The approach emphasized clear commit messaging and collaboration, supporting efficient code review and compliance within a cross-team environment.